before/after for stray-0 fix PR

.env.example

@@ -4,8 +4,11 @@
 # Environment
 NODE_ENV=production
 
-# JWT Secret (generate with: openssl rand -base64 64)
-JWT_SECRET=your_very_long_random_jwt_secret_here
+# JWT Secret — OPTIONAL. Leave unset and it is auto-generated on first run
+# (Docker: the secrets-init service writes it to a private volume and reuses it
+# across restarts). Set it explicitly only to pin your own value.
+# Generate one with: openssl rand -base64 64
+#JWT_SECRET=your_very_long_random_jwt_secret_here
 
 # Auth cookie Secure flag
 #   unset  - default: follows NODE_ENV (production=true, dev=false)
@@ -38,19 +41,28 @@ JWT_SECRET=your_very_long_random_jwt_secret_here
 # Database Configuration (PostgreSQL)
 DATABASE_CLIENT=pg
 DB_USER=picpeak
+# DB_PASSWORD — OPTIONAL. Leave unset and it is auto-generated on first run
+# (Docker). Set it explicitly to pin your own, e.g. for an external database.
 # IMPORTANT: Avoid $ character in passwords - Docker Compose interprets it as variable substitution
 # If you must use $, escape it as $$ (e.g., Pass$$word instead of Pass$word)
-DB_PASSWORD=your_secure_postgres_password_here
+#DB_PASSWORD=your_secure_postgres_password_here
 DB_NAME=picpeak_prod
 
 # Redis Configuration
+# REDIS_PASSWORD — OPTIONAL. Leave unset and it is auto-generated on first run (Docker).
 # IMPORTANT: Same warning applies - avoid $ or escape as $$
-REDIS_PASSWORD=your_secure_redis_password_here
+#REDIS_PASSWORD=your_secure_redis_password_here
 
-# Admin Account (initial setup)
-ADMIN_USERNAME=admin
-ADMIN_EMAIL=admin@yourdomain.com
-ADMIN_PASSWORD=your_secure_admin_password_here
+# Admin Account (initial setup) — OPTIONAL
+# Leave these unset (default) to create your admin IN THE BROWSER on first run:
+# open /admin and PicPeak shows a setup screen. The one-time setup token is
+# printed to the backend logs (`docker compose logs backend | grep -i "setup token"`)
+# and saved to data/SETUP_TOKEN.
+# Set ADMIN_PASSWORD to auto-create the admin on first boot instead (legacy;
+# credentials written to data/ADMIN_CREDENTIALS.txt).
+#ADMIN_USERNAME=admin
+#ADMIN_EMAIL=admin@yourdomain.com
+#ADMIN_PASSWORD=your_secure_admin_password_here
 
 # Email Configuration
 # For Gmail: use app-specific password
@@ -68,6 +80,16 @@ EMAIL_FROM=noreply@yourdomain.com
 FRONTEND_URL=https://yourdomain.com
 ADMIN_URL=https://yourdomain.com
 
+# Static HTML title + description used for social link previews when the
+# fetcher doesn't trigger the per-event OG endpoint — most notably the
+# WhatsApp Business API and various 3rd-party preview-service caches
+# (#521). Set these to your brand so link previews aren't generic.
+# Substituted into index.html at frontend-container start, so changes
+# take effect on the next `docker compose up -d frontend` — no rebuild
+# required.
+BRAND_TITLE=PicPeak
+BRAND_DESCRIPTION=Photo gallery shared with PicPeak.
+
 # API URL for email assets (logos, images in notification emails)
 # This must be the publicly accessible URL where email recipients can load images.
 # If not set, defaults to http://localhost:3001 which will show broken images in emails.
@@ -97,12 +119,6 @@ UPDATE_CHECK_ENABLED=true
 # Timezone
 TZ=UTC
 
-# Runtime user mapping for Docker (optional)
-# Set these to your host user's UID/GID to avoid permission issues on bind mounts.
-# Run `id -u` and `id -g` on host to get values. Defaults to 1001.
-PUID=1001
-PGID=1001
-
 # Analytics (Optional - Umami)
 VITE_UMAMI_URL=
 VITE_UMAMI_WEBSITE_ID=

.github/ISSUE_TEMPLATE/config.yml

@@ -1,11 +1,11 @@
 blank_issues_enabled: false
 contact_links:
   - name: 📚 Documentation
-    url: https://github.com/the-luap/picpeak/blob/main/DEPLOYMENT.md
+    url: https://github.com/PicPeak/picpeak/blob/main/DEPLOYMENT.md
     about: Please read the documentation before opening an issue
   - name: 💬 Discussions
-    url: https://github.com/the-luap/picpeak/discussions
+    url: https://github.com/PicPeak/picpeak/discussions
     about: Ask questions and discuss with the community
   - name: 🔒 Security Issues
-    url: https://github.com/the-luap/picpeak/blob/main/SECURITY.md
+    url: https://github.com/PicPeak/picpeak/blob/main/SECURITY.md
     about: Please review our security policy for reporting vulnerabilities

.github/ISSUE_TEMPLATE/security_vulnerability.md

@@ -9,7 +9,7 @@ assignees: ''
 
 ⚠️ **IMPORTANT: For serious security vulnerabilities, please DO NOT create a public issue.**
 
-Instead, please use [GitHub Private Vulnerability Reporting](https://github.com/the-luap/picpeak/security/advisories/new) or email **info@picpeak.app** with the details.
+Instead, please use [GitHub Private Vulnerability Reporting](https://github.com/PicPeak/picpeak/security/advisories/new) or email **info@picpeak.app** with the details.
 
 For minor security improvements or questions, you can use this template:
 

.github/workflows/README-DOCKER.md

@@ -42,16 +42,16 @@ Once published, images can be pulled using:
 
 ```bash
 # Pull backend image
-docker pull ghcr.io/the-luap/picpeak/backend:latest
+docker pull ghcr.io/picpeak/picpeak/backend:latest
 
 # Pull frontend image
-docker pull ghcr.io/the-luap/picpeak/frontend:latest
+docker pull ghcr.io/picpeak/picpeak/frontend:latest
 
 # Pull specific version
-docker pull ghcr.io/the-luap/picpeak/backend:v1.0.0
+docker pull ghcr.io/picpeak/picpeak/backend:v1.0.0
 
 # Pull for specific architecture
-docker pull --platform linux/arm64 ghcr.io/the-luap/picpeak/backend:latest
+docker pull --platform linux/arm64 ghcr.io/picpeak/picpeak/backend:latest
 ```
 
 ### Using in Docker Compose
@@ -61,14 +61,14 @@ version: '3.8'
 
 services:
   backend:
-    image: ghcr.io/the-luap/picpeak/backend:latest
+    image: ghcr.io/picpeak/picpeak/backend:latest
     environment:
       - NODE_ENV=production
     ports:
       - "3001:3000"
 
   frontend:
-    image: ghcr.io/the-luap/picpeak/frontend:latest
+    image: ghcr.io/picpeak/picpeak/frontend:latest
     ports:
       - "80:80"
 ```
@@ -86,7 +86,7 @@ spec:
     spec:
       containers:
       - name: backend
-        image: ghcr.io/the-luap/picpeak/backend:latest
+        image: ghcr.io/picpeak/picpeak/backend:latest
         imagePullPolicy: Always
 ```
 
@@ -149,8 +149,8 @@ If images aren't visible after successful push:
 ### View Packages
 
 Your Docker images are available at:
-- Backend: `https://github.com/users/the-luap/packages/container/package/picpeak%2Fbackend`
-- Frontend: `https://github.com/users/the-luap/packages/container/package/picpeak%2Ffrontend`
+- Backend: `https://github.com/orgs/PicPeak/packages/container/package/picpeak%2Fbackend`
+- Frontend: `https://github.com/orgs/PicPeak/packages/container/package/picpeak%2Ffrontend`
 
 ### Delete Old Versions
 

.github/workflows/bypass-size-gate.yml

@@ -0,0 +1,70 @@
+name: Bypass size gate
+
+# Caps how large a PR a "review-bypass" collaborator (e.g. @Luca-Timo) can
+# self-merge without a maintainer review. The branch-protection bypass list
+# alone is binary — once a user is on it they can merge anything without
+# review. This workflow reports a REQUIRED status check that fails when a
+# bypass user's PR exceeds the configured size threshold, which blocks the
+# merge even with bypass enabled. Other contributors are unaffected (the
+# check reports success for them so the required-check gate doesn't trip).
+#
+# To tune: edit LINE_LIMIT or BYPASS_USERS below.
+#
+# Trigger note: uses `pull_request_target` so the workflow has the elevated
+# permissions of the base repo's GITHUB_TOKEN (read PR metadata, write
+# checks). The script never executes code FROM the PR — it only reads
+# metadata via the API — so this is safe against fork-PR attacks.
+
+on:
+  pull_request_target:
+    types: [opened, reopened, synchronize, ready_for_review]
+
+permissions:
+  pull-requests: read
+  checks: write
+
+jobs:
+  size-gate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Compute PR size and report check status
+        uses: actions/github-script@v7
+        with:
+          script: |
+            // Tune these two constants if the policy shifts.
+            const LINE_LIMIT = 300;
+            const BYPASS_USERS = ['Luca-Timo'];
+
+            const pr = context.payload.pull_request;
+            const author = pr.user.login;
+            const linesChanged = pr.additions + pr.deletions;
+            const filesChanged = pr.changed_files;
+
+            let conclusion, title, summary;
+
+            if (!BYPASS_USERS.includes(author)) {
+              // Not a bypass user — this gate doesn't apply to them. They
+              // go through normal review. Report success so the required
+              // check doesn't block their merge.
+              conclusion = 'success';
+              title = 'Not applicable';
+              summary = `This gate only restricts review-bypass for: ${BYPASS_USERS.join(', ')}. PRs from other authors (${author} here) go through the normal review path and are unaffected.`;
+            } else if (linesChanged <= LINE_LIMIT) {
+              conclusion = 'success';
+              title = `OK — within bypass limit (${linesChanged} lines)`;
+              summary = `Small PR: ${linesChanged} lines changed across ${filesChanged} file(s). Within the ${LINE_LIMIT}-line self-merge limit for @${author}. Can be merged without a maintainer review.`;
+            } else {
+              conclusion = 'failure';
+              title = `Too large for bypass (${linesChanged} lines)`;
+              summary = `Large PR: ${linesChanged} lines changed across ${filesChanged} file(s). Exceeds the ${LINE_LIMIT}-line self-merge limit for @${author} — needs an approving review from a maintainer before merge. Split into smaller PRs or wait for review.`;
+            }
+
+            await github.rest.checks.create({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              name: 'bypass-size-gate',
+              head_sha: pr.head.sha,
+              status: 'completed',
+              conclusion,
+              output: { title, summary }
+            });

.github/workflows/docker-build.yml

@@ -1,7 +1,8 @@
 name: Build and Push Docker Images
 
 # This workflow is triggered by:
-# - Push to main/beta branches (builds 'latest'/'stable' or 'beta' tagged images)
+# - Push to main/stable branches (main → ':main' rolling tag for active-dev
+#   builds; stable → ':stable' + ':latest' for the curated channel)
 # - Version tags from Release Please (e.g., v1.2.0 -> builds versioned images)
 # - GitHub Releases (created by Release Please)
 # - Pull requests (build verification only, no push by default)
@@ -20,10 +21,10 @@ name: Build and Push Docker Images
 
 on:
   push:
-    branches: [ main, beta ]
+    branches: [ main, stable ]
     tags: [ 'v*.*.*', 'v*.*.*-beta.*' ]  # Triggered by Release Please tags (stable and beta)
   pull_request:
-    branches: [ main, beta ]
+    branches: [ main, stable ]
   release:
     types: [ published ]  # Triggered when Release Please creates a release
   workflow_dispatch:
@@ -37,6 +38,16 @@ on:
           - 'true'
           - 'false'
 
+# Once release-please authors releases with a PAT (#719), a new version fires
+# BOTH the tag-push and the release-published triggers (GITHUB_TOKEN used to
+# suppress them). They build the same immutable version, so collapse them into a
+# single run by grouping on the ref. Branch and PR builds use different refs and
+# still run independently; a superseding push cancels an in-flight run for the
+# same ref (only the newest build per ref is kept).
+concurrency:
+  group: docker-build-${{ github.ref }}
+  cancel-in-progress: true
+
 env:
   REGISTRY: ghcr.io
   # BACKEND_IMAGE_NAME and FRONTEND_IMAGE_NAME are computed per job in the
@@ -45,6 +56,13 @@ env:
   # Computing them with bash parameter expansion (${VAR,,}) keeps the workflow
   # working on forks regardless of the owner's name casing.
 
+# Default GITHUB_TOKEN to read-only at the workflow level. Each job that
+# needs to publish to GHCR sets `packages: write` explicitly. This keeps
+# the rest of the workflow (and any future steps) from inheriting unneeded
+# privileges (CKV2_GHA_1).
+permissions:
+  contents: read
+
 jobs:
   # -----------------------------------------------------------------------------
   # Backend: per-arch build, then merge into a multi-arch manifest
@@ -62,6 +80,11 @@ jobs:
     permissions:
       contents: read
       packages: write
+      # Trivy uploads its SARIF to the Security tab from this job — see
+      # the "Run Trivy" step below. Scanning per-arch by digest (#476)
+      # is reliable; scanning the multi-arch index by tag from the
+      # merge-* job was not.
+      security-events: write
 
     steps:
     - name: Checkout code
@@ -122,7 +145,10 @@ jobs:
         platforms: ${{ matrix.platform }}
         labels: ${{ steps.meta-backend.outputs.labels }}
         cache-from: type=gha,scope=backend-${{ env.PLATFORM_PAIR }}
-        cache-to: type=gha,mode=max,scope=backend-${{ env.PLATFORM_PAIR }}
+        # ignore-error: a flaky GitHub Actions cache write ("error writing
+        # layer blob: not_found") must not fail an otherwise-successful build
+        # that already pushed the image.
+        cache-to: type=gha,mode=max,scope=backend-${{ env.PLATFORM_PAIR }},ignore-error=true
         outputs: ${{ steps.push-decision.outputs.push == 'true' && format('type=image,name={0}/{1},push-by-digest=true,name-canonical=true,push=true', env.REGISTRY, env.BACKEND_IMAGE_NAME) || 'type=cacheonly' }}
         build-args: |
           CACHEBUST=${{ github.run_number }}
@@ -146,13 +172,58 @@ jobs:
         if-no-files-found: error
         retention-days: 1
 
+    # Per-arch vulnerability scan (#476). Scanning the multi-arch
+    # manifest from the merge-* job by tag is unreliable — Trivy's
+    # remote resolver crashes intermittently with "no child with
+    # platform linux/amd64 in index". The fix is to scan each leg
+    # by its single-platform digest right here, where it just landed
+    # in GHCR. Tag pinned (was @master) so the action + bundled
+    # Trivy binary don't float between runs.
+    #
+    # exit-code is left unset (=0) for now: Trivy reports findings
+    # to the Security tab but doesn't fail the build. Flipping that
+    # to '1' to actually gate CI is a deliberate follow-up — needs an
+    # audit pass first so the next beta build doesn't surprise red.
+    - name: Run Trivy vulnerability scanner (per-arch, by digest)
+      if: steps.push-decision.outputs.push == 'true'
+      uses: aquasecurity/trivy-action@v0.36.0
+      env:
+        # docker/build-push-action wraps every push in an OCI index
+        # (carries the SLSA provenance attestation alongside the
+        # actual image). Trivy's remote backend defaults to
+        # linux/amd64 regardless of host arch when resolving an
+        # index, which makes the arm64 leg crash with "no child
+        # with platform linux/amd64". Telling Trivy which child to
+        # scan keeps the provenance attestation intact and fixes
+        # the resolver crash. Pin to matrix.platform so each leg
+        # scans its own arch.
+        TRIVY_PLATFORM: ${{ matrix.platform }}
+      with:
+        image-ref: ${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE_NAME }}@${{ steps.build.outputs.digest }}
+        format: 'sarif'
+        output: 'trivy-backend-${{ env.PLATFORM_PAIR }}.sarif'
+        severity: 'CRITICAL,HIGH'
+        timeout: '10m'
+
+    - name: Upload Trivy scan results to GitHub Security tab
+      if: steps.push-decision.outputs.push == 'true'
+      uses: github/codeql-action/upload-sarif@v4
+      with:
+        sarif_file: 'trivy-backend-${{ env.PLATFORM_PAIR }}.sarif'
+        # Distinct category per arch so the Security tab surfaces
+        # per-platform findings independently — an amd64-only CVE in
+        # a base layer doesn't get masked by the arm64 scan.
+        category: 'backend-vulnerabilities-${{ env.PLATFORM_PAIR }}'
+
   merge-backend:
     needs: build-backend
     runs-on: ubuntu-latest
+    # No security-events permission here — vulnerability scanning moved
+    # to per-arch build-backend jobs (#476). This job's only job is to
+    # combine the per-arch digests into a multi-arch manifest.
     permissions:
       contents: read
       packages: write
-      security-events: write
     # Only run when at least one digest was pushed (i.e. not on PRs without push intent).
     if: github.event_name != 'pull_request' || github.event.inputs.push == 'true'
 
@@ -185,7 +256,9 @@ jobs:
     - name: Determine build context
       id: context
       run: |
-        if [[ "${{ github.ref }}" == refs/tags/v*-beta* ]] || [[ "${{ github.ref }}" == refs/heads/beta ]]; then
+        if [[ "${{ github.ref }}" == refs/tags/v*-beta* ]] || [[ "${{ github.ref }}" == refs/heads/main ]]; then
+          # Active-dev branch (`main`, renamed from `beta` per #669) produces
+          # prereleases; the `-beta.N` version-suffix scheme is unchanged.
           echo "channel=beta" >> $GITHUB_OUTPUT
           echo "is_prerelease=true" >> $GITHUB_OUTPUT
         else
@@ -210,9 +283,14 @@ jobs:
           type=semver,pattern={{major}}.{{minor}},enable=${{ steps.context.outputs.is_prerelease == 'false' }}
           type=semver,pattern={{major}},enable=${{ steps.context.outputs.is_prerelease == 'false' }}
           type=sha,format=short
-          type=raw,value=latest,enable={{is_default_branch}}
-          type=raw,value=stable,enable=${{ github.ref == 'refs/heads/main' || (startsWith(github.ref, 'refs/tags/v') && steps.context.outputs.is_prerelease == 'false') }}
-          type=raw,value=beta,enable=${{ github.ref == 'refs/heads/beta' || steps.context.outputs.is_prerelease == 'true' }}
+          # `:latest` + `:stable` follow the stable channel (the `stable` branch +
+          # stable release tags). The default branch is now `main` (active dev),
+          # so `is_default_branch` no longer maps to "stable" — be explicit.
+          type=raw,value=latest,enable=${{ github.ref == 'refs/heads/stable' || (startsWith(github.ref, 'refs/tags/v') && steps.context.outputs.is_prerelease == 'false') }}
+          type=raw,value=stable,enable=${{ github.ref == 'refs/heads/stable' || (startsWith(github.ref, 'refs/tags/v') && steps.context.outputs.is_prerelease == 'false') }}
+          # `:beta` is RETIRED post-rename (Option B / #669). Active-dev pulls
+          # are `:main` (auto via type=ref,event=branch). The pre-rename `:beta`
+          # tag remains frozen at its last build — operators should update.
 
     - name: Create and push multi-arch manifest
       working-directory: /tmp/digests
@@ -224,23 +302,6 @@ jobs:
       run: |
         docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE_NAME }}:${{ steps.meta-backend.outputs.version }}
 
-    - name: Run Trivy vulnerability scanner
-      if: github.event_name != 'pull_request' && steps.login-ghcr.outcome == 'success'
-      uses: aquasecurity/trivy-action@master
-      with:
-        image-ref: ${{ env.REGISTRY }}/${{ env.BACKEND_IMAGE_NAME }}:${{ steps.meta-backend.outputs.version }}
-        format: 'sarif'
-        output: 'trivy-backend.sarif'
-        severity: 'CRITICAL,HIGH'
-        timeout: '10m'
-
-    - name: Upload Trivy scan results to GitHub Security tab
-      if: github.event_name != 'pull_request' && steps.login-ghcr.outcome == 'success'
-      uses: github/codeql-action/upload-sarif@v4
-      with:
-        sarif_file: 'trivy-backend.sarif'
-        category: 'backend-vulnerabilities'
-
   # -----------------------------------------------------------------------------
   # Frontend: per-arch build, then merge into a multi-arch manifest
   # -----------------------------------------------------------------------------
@@ -257,6 +318,9 @@ jobs:
     permissions:
       contents: read
       packages: write
+      # See build-backend for the rationale (#476). Same pattern: per-arch
+      # vulnerability scan by digest, SARIF uploaded to the Security tab.
+      security-events: write
 
     steps:
     - name: Checkout code
@@ -317,7 +381,10 @@ jobs:
         platforms: ${{ matrix.platform }}
         labels: ${{ steps.meta-frontend.outputs.labels }}
         cache-from: type=gha,scope=frontend-${{ env.PLATFORM_PAIR }}
-        cache-to: type=gha,mode=max,scope=frontend-${{ env.PLATFORM_PAIR }}
+        # ignore-error: a flaky GitHub Actions cache write ("error writing
+        # layer blob: not_found") must not fail an otherwise-successful build
+        # that already pushed the image.
+        cache-to: type=gha,mode=max,scope=frontend-${{ env.PLATFORM_PAIR }},ignore-error=true
         outputs: ${{ steps.push-decision.outputs.push == 'true' && format('type=image,name={0}/{1},push-by-digest=true,name-canonical=true,push=true', env.REGISTRY, env.FRONTEND_IMAGE_NAME) || 'type=cacheonly' }}
         build-args: |
           CACHEBUST=${{ github.run_number }}
@@ -341,13 +408,40 @@ jobs:
         if-no-files-found: error
         retention-days: 1
 
+    # Per-arch vulnerability scan (#476). See build-backend for the
+    # full rationale; identical pattern here, only the image-ref +
+    # SARIF filename + category change.
+    - name: Run Trivy vulnerability scanner (per-arch, by digest)
+      if: steps.push-decision.outputs.push == 'true'
+      uses: aquasecurity/trivy-action@v0.36.0
+      env:
+        # See build-backend for the rationale — pin Trivy's platform
+        # to the matrix arch so its remote-index resolver picks the
+        # right child instead of defaulting to linux/amd64 and
+        # crashing on the arm64 leg.
+        TRIVY_PLATFORM: ${{ matrix.platform }}
+      with:
+        image-ref: ${{ env.REGISTRY }}/${{ env.FRONTEND_IMAGE_NAME }}@${{ steps.build.outputs.digest }}
+        format: 'sarif'
+        output: 'trivy-frontend-${{ env.PLATFORM_PAIR }}.sarif'
+        severity: 'CRITICAL,HIGH'
+        timeout: '10m'
+
+    - name: Upload Trivy scan results to GitHub Security tab
+      if: steps.push-decision.outputs.push == 'true'
+      uses: github/codeql-action/upload-sarif@v4
+      with:
+        sarif_file: 'trivy-frontend-${{ env.PLATFORM_PAIR }}.sarif'
+        category: 'frontend-vulnerabilities-${{ env.PLATFORM_PAIR }}'
+
   merge-frontend:
     needs: build-frontend
     runs-on: ubuntu-latest
+    # See merge-backend — vulnerability scanning moved to the per-arch
+    # build-frontend matrix (#476). This job only publishes the manifest.
     permissions:
       contents: read
       packages: write
-      security-events: write
     if: github.event_name != 'pull_request' || github.event.inputs.push == 'true'
 
     steps:
@@ -379,7 +473,9 @@ jobs:
     - name: Determine build context
       id: context
       run: |
-        if [[ "${{ github.ref }}" == refs/tags/v*-beta* ]] || [[ "${{ github.ref }}" == refs/heads/beta ]]; then
+        if [[ "${{ github.ref }}" == refs/tags/v*-beta* ]] || [[ "${{ github.ref }}" == refs/heads/main ]]; then
+          # Active-dev branch (`main`, renamed from `beta` per #669) produces
+          # prereleases; the `-beta.N` version-suffix scheme is unchanged.
           echo "channel=beta" >> $GITHUB_OUTPUT
           echo "is_prerelease=true" >> $GITHUB_OUTPUT
         else
@@ -404,9 +500,14 @@ jobs:
           type=semver,pattern={{major}}.{{minor}},enable=${{ steps.context.outputs.is_prerelease == 'false' }}
           type=semver,pattern={{major}},enable=${{ steps.context.outputs.is_prerelease == 'false' }}
           type=sha,format=short
-          type=raw,value=latest,enable={{is_default_branch}}
-          type=raw,value=stable,enable=${{ github.ref == 'refs/heads/main' || (startsWith(github.ref, 'refs/tags/v') && steps.context.outputs.is_prerelease == 'false') }}
-          type=raw,value=beta,enable=${{ github.ref == 'refs/heads/beta' || steps.context.outputs.is_prerelease == 'true' }}
+          # `:latest` + `:stable` follow the stable channel (the `stable` branch +
+          # stable release tags). The default branch is now `main` (active dev),
+          # so `is_default_branch` no longer maps to "stable" — be explicit.
+          type=raw,value=latest,enable=${{ github.ref == 'refs/heads/stable' || (startsWith(github.ref, 'refs/tags/v') && steps.context.outputs.is_prerelease == 'false') }}
+          type=raw,value=stable,enable=${{ github.ref == 'refs/heads/stable' || (startsWith(github.ref, 'refs/tags/v') && steps.context.outputs.is_prerelease == 'false') }}
+          # `:beta` is RETIRED post-rename (Option B / #669). Active-dev pulls
+          # are `:main` (auto via type=ref,event=branch). The pre-rename `:beta`
+          # tag remains frozen at its last build — operators should update.
 
     - name: Create and push multi-arch manifest
       working-directory: /tmp/digests
@@ -418,23 +519,6 @@ jobs:
       run: |
         docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ env.FRONTEND_IMAGE_NAME }}:${{ steps.meta-frontend.outputs.version }}
 
-    - name: Run Trivy vulnerability scanner
-      if: github.event_name != 'pull_request' && steps.login-ghcr.outcome == 'success'
-      uses: aquasecurity/trivy-action@master
-      with:
-        image-ref: ${{ env.REGISTRY }}/${{ env.FRONTEND_IMAGE_NAME }}:${{ steps.meta-frontend.outputs.version }}
-        format: 'sarif'
-        output: 'trivy-frontend.sarif'
-        severity: 'CRITICAL,HIGH'
-        timeout: '10m'
-
-    - name: Upload Trivy scan results to GitHub Security tab
-      if: github.event_name != 'pull_request' && steps.login-ghcr.outcome == 'success'
-      uses: github/codeql-action/upload-sarif@v4
-      with:
-        sarif_file: 'trivy-frontend.sarif'
-        category: 'frontend-vulnerabilities'
-
   summary:
     needs: [build-backend, merge-backend, build-frontend, merge-frontend]
     if: always()

.github/workflows/install-smoke.yml

@@ -0,0 +1,221 @@
+name: Fresh-install smoke
+
+# Verifies that a clean Postgres install boots cleanly under the same
+# conditions a new user hits on their first `docker compose up -d`. The
+# specific scenarios this guards against — see #484 for the original
+# reproduction:
+#
+#   1. Bind-mounted host directories owned by a UID other than 1001
+#      (the container's nodejs user). The entrypoint must self-chown
+#      and drop privileges via su-exec.
+#   2. Cold-start Postgres with no prior schema (the FK-order bug fixed
+#      in #494, the index/created_at error fixed in #511, and any
+#      future migration-order issue that only surfaces on an empty DB).
+#
+# Triggers only on changes that touch the install path so unrelated PRs
+# don't pay the build cost.
+
+on:
+  # No `paths:` filter — branch protection on `main` + `stable` lists
+  # `fresh-install` as a REQUIRED check, and a path-filtered trigger
+  # that skipped on unrelated PRs (e.g. frontend-only) would leave the
+  # required check "missing" forever and block the merge. Better to
+  # pay the boot cost on every PR than maintain a per-path allowlist
+  # that drifts as the install surface evolves. (Branches also updated
+  # post-#669 rename: beta → main, old main → stable.)
+  push:
+    branches: [main, stable]
+  pull_request:
+    branches: [main, stable]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  fresh-install:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      # Build for the runner's arch only — we just need a runnable image.
+      # The full multi-arch build is the docker-build workflow's job.
+      - name: Build backend image
+        uses: docker/build-push-action@v5
+        with:
+          context: ./backend
+          file: ./backend/Dockerfile
+          load: true
+          tags: picpeak-backend:smoke
+          cache-from: type=gha,scope=install-smoke
+          # ignore-error: a flaky GHA cache write must not fail the build.
+          cache-to: type=gha,mode=max,scope=install-smoke,ignore-error=true
+
+      - name: Create Docker network
+        run: docker network create picpeak-smoke
+
+      # Mount as UID 1000 (the typical GitHub Actions runner user, and a
+      # common mismatch case on Linux hosts). The entrypoint must chown
+      # this to 1001 itself — that's the regression we're guarding.
+      - name: Prepare host bind-mount dirs owned by UID 1000
+        run: |
+          mkdir -p smoke-mounts/storage smoke-mounts/data smoke-mounts/logs
+          chmod 755 smoke-mounts smoke-mounts/*
+          ls -ld smoke-mounts/*
+
+      - name: Start Postgres
+        run: |
+          docker run -d --name picpeak-smoke-pg --network picpeak-smoke \
+            -e POSTGRES_USER=picpeak \
+            -e POSTGRES_PASSWORD=smokepass \
+            -e POSTGRES_DB=picpeak_prod \
+            --health-cmd="pg_isready -U picpeak -d picpeak_prod" \
+            --health-interval=2s --health-timeout=2s --health-retries=30 \
+            postgres:15-alpine
+
+      - name: Wait for Postgres healthy
+        run: |
+          for i in $(seq 1 60); do
+            status=$(docker inspect -f '{{.State.Health.Status}}' picpeak-smoke-pg 2>/dev/null || echo starting)
+            if [ "$status" = "healthy" ]; then
+              echo "postgres healthy after ${i}s"
+              exit 0
+            fi
+            sleep 1
+          done
+          echo "postgres did not become healthy in 60s"
+          docker logs picpeak-smoke-pg
+          exit 1
+
+      - name: Start backend with mismatched-UID bind mounts (fresh install)
+        run: |
+          docker run -d --name picpeak-smoke-bk --network picpeak-smoke \
+            -e NODE_ENV=production \
+            -e JWT_SECRET=smoketestsecretvalueof32characters \
+            -e DB_HOST=picpeak-smoke-pg \
+            -e DB_USER=picpeak \
+            -e DB_PASSWORD=smokepass \
+            -e DB_NAME=picpeak_prod \
+            -e ADMIN_EMAIL=admin@smoke.local \
+            -e ADMIN_PASSWORD=smokeAdminPass12345 \
+            -e STORAGE_PATH=/app/storage \
+            -v "$PWD/smoke-mounts/storage:/app/storage" \
+            -v "$PWD/smoke-mounts/data:/app/data" \
+            -v "$PWD/smoke-mounts/logs:/app/logs" \
+            picpeak-backend:smoke
+
+      - name: Wait for backend healthy
+        run: |
+          for i in $(seq 1 120); do
+            status=$(docker inspect -f '{{.State.Status}}' picpeak-smoke-bk 2>/dev/null || echo missing)
+            health=$(docker inspect -f '{{.State.Health.Status}}' picpeak-smoke-bk 2>/dev/null || echo none)
+            if [ "$status" = "exited" ]; then
+              echo "FAIL: backend exited during cold-start (restart loop scenario)"
+              docker logs picpeak-smoke-bk
+              echo "--- error.log ---"
+              cat smoke-mounts/logs/error.log 2>/dev/null || echo "(no error.log)"
+              exit 1
+            fi
+            if [ "$health" = "healthy" ]; then
+              echo "backend healthy after ${i}s"
+              exit 0
+            fi
+            sleep 1
+          done
+          echo "FAIL: backend did not become healthy in 120s"
+          docker ps -a
+          docker logs picpeak-smoke-bk
+          exit 1
+
+      - name: Verify chown happened (container view)
+        run: |
+          # All three dirs should now be owned by nodejs (UID 1001).
+          # If the entrypoint's self-chown branch didn't fire, they'd
+          # still be owned by the runner UID and node would have hit
+          # EACCES creating storage subdirs.
+          for d in /app/storage /app/data /app/logs; do
+            owner_uid=$(docker exec picpeak-smoke-bk stat -c '%u' "$d")
+            if [ "$owner_uid" != "1001" ]; then
+              echo "FAIL: $d is owned by UID $owner_uid (expected 1001)"
+              exit 1
+            fi
+            echo "ok: $d owned by UID $owner_uid"
+          done
+
+      - name: Verify app is actually serving
+        run: |
+          # /health is what docker's HEALTHCHECK polls, but hit it
+          # directly to confirm the response shape matches what the
+          # frontend + reverse proxy expect.
+          body=$(docker exec picpeak-smoke-bk wget -qO- http://localhost:3000/health)
+          echo "/health => $body"
+          echo "$body" | grep -q '"status":"ok"' || {
+            echo "FAIL: /health did not return status:ok"
+            exit 1
+          }
+
+      - name: Verify node runs as nodejs (not root)
+        run: |
+          # dumb-init runs as root (PID 1), node must be running as
+          # nodejs (UID 1001) — if su-exec drop didn't happen the app
+          # would be running as root which is the security regression
+          # we're guarding against. Alpine ships BusyBox ps, which
+          # doesn't support `-p PID` or pgrep, so list + awk instead.
+          user=$(docker exec picpeak-smoke-bk ps -o user,comm | awk '$2=="node" {print $1; exit}')
+          if [ "$user" != "nodejs" ]; then
+            echo "FAIL: node running as '$user' (expected nodejs)"
+            docker exec picpeak-smoke-bk ps -o pid,user,comm
+            exit 1
+          fi
+          echo "ok: node running as $user"
+
+      - name: Verify no restart loop
+        run: |
+          restart_count=$(docker inspect -f '{{.RestartCount}}' picpeak-smoke-bk)
+          if [ "$restart_count" -gt 0 ]; then
+            echo "FAIL: container restarted $restart_count time(s) — install loop bug returning"
+            docker logs picpeak-smoke-bk
+            exit 1
+          fi
+          echo "ok: 0 restarts"
+
+      # Restart with `--user 5005:5005` (no root, can't chown) against
+      # bind mounts owned by 1000 — entrypoint must fail loud with the
+      # actionable preflight error, not silently restart-loop.
+      - name: Verify preflight fails loud on unwritable mounts
+        run: |
+          docker rm -f picpeak-smoke-bk2 2>/dev/null || true
+          set +e
+          out=$(docker run --rm --user 5005:5005 --network picpeak-smoke \
+            -e NODE_ENV=production -e JWT_SECRET=x \
+            -e DB_HOST=picpeak-smoke-pg -e DB_USER=picpeak \
+            -e DB_PASSWORD=smokepass -e DB_NAME=picpeak_prod \
+            -e STORAGE_PATH=/app/storage \
+            -v "$PWD/smoke-mounts/storage:/app/storage" \
+            -v "$PWD/smoke-mounts/data:/app/data" \
+            -v "$PWD/smoke-mounts/logs:/app/logs" \
+            picpeak-backend:smoke 2>&1)
+          rc=$?
+          set -e
+          echo "$out"
+          if [ $rc -eq 0 ]; then
+            echo "FAIL: preflight should have exited non-zero"
+            exit 1
+          fi
+          echo "$out" | grep -q "is not writable by UID 5005" || {
+            echo "FAIL: preflight error message missing or wrong"
+            exit 1
+          }
+          echo "ok: preflight failed loud with actionable error"
+
+      - name: Cleanup
+        if: always()
+        run: |
+          docker rm -f picpeak-smoke-bk picpeak-smoke-bk2 picpeak-smoke-pg 2>/dev/null || true
+          docker network rm picpeak-smoke 2>/dev/null || true

.github/workflows/pr-title-lint.yml

@@ -0,0 +1,36 @@
+name: PR Title Lint
+
+# Release Please derives version bumps and the changelog from Conventional
+# Commit prefixes (feat:, fix:, ...). PRs whose title/commits use other
+# conventions (e.g. gitmoji) are silently ignored, so their changes ship
+# without a version bump or a changelog entry. This check fails a PR whose
+# title is not a valid Conventional Commit so the release stays automated.
+
+on:
+  pull_request_target:
+    types: [opened, edited, synchronize, reopened]
+
+permissions:
+  pull-requests: read
+
+jobs:
+  lint-pr-title:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Validate PR title is a Conventional Commit
+        uses: amannn/action-semantic-pull-request@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          types: |
+            feat
+            fix
+            perf
+            revert
+            docs
+            style
+            chore
+            refactor
+            test
+            build
+            ci

.github/workflows/release-please-beta.yml

@@ -2,7 +2,7 @@ name: Release Please (Beta)
 
 on:
   push:
-    branches: [beta]
+    branches: [main]
 
 permissions:
   contents: write
@@ -20,10 +20,48 @@ jobs:
         uses: googleapis/release-please-action@v4
         id: release
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+          # A dedicated token (fine-grained PAT) makes the release PR run CI
+          # automatically (no "workflows awaiting approval") and lets it be
+          # merged without a manual review. Falls back to GITHUB_TOKEN so the
+          # workflow still works before the secret is added (#719).
+          token: ${{ secrets.RELEASE_PLEASE_TOKEN || secrets.GITHUB_TOKEN }}
           config-file: release-please-config-beta.json
           manifest-file: .release-please-manifest-beta.json
-          target-branch: beta
+          target-branch: main
+
+      # Auto-approve + enable auto-merge on the open release PR so betas publish
+      # with no manual clicks. Approval uses GITHUB_TOKEN (github-actions[bot]) —
+      # a different identity than the PR author (RELEASE_PLEASE_TOKEN) — so it is
+      # a valid review (requires the org's "Allow GitHub Actions to approve pull
+      # requests" + the repo's "Allow auto-merge"). Only meaningful when a PAT is
+      # set: without it the PR is bot-authored and can't be self-approved, so we
+      # skip and leave today's manual flow. Best-effort — never blocks the run.
+      - name: Auto-approve and enable auto-merge on the release PR
+        if: ${{ steps.release.outputs.release_created != 'true' }}
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          RELEASE_PAT: ${{ secrets.RELEASE_PLEASE_TOKEN }}
+          # This job has no checkout, so gh can't infer the repo from a git
+          # remote — set it explicitly (same pattern as whatsnew, 2a5f0a8).
+          GH_REPO: ${{ github.repository }}
+        run: |
+          if [ -z "$RELEASE_PAT" ]; then
+            echo "RELEASE_PLEASE_TOKEN not set — skipping auto-merge (manual review still required)."
+            exit 0
+          fi
+          pr=$(gh pr list --head release-please--branches--main --state open --json number --jq '.[0].number // empty')
+          if [ -n "$pr" ]; then
+            # Approve as github-actions[bot] (GITHUB_TOKEN) — a different identity
+            # than the PR author (the PAT) — so it counts as a valid review.
+            gh pr review "$pr" --approve --body "Automated approval — release-please version bump + changelog (#719)." || true
+            # Enable auto-merge as the PAT so the eventual merge commit is
+            # attributed to a real identity. If enabled via GITHUB_TOKEN the merge
+            # push is suppressed by recursion prevention and the follow-up run that
+            # cuts the tag/release never fires (#719).
+            GH_TOKEN="$RELEASE_PAT" gh pr merge "$pr" --squash --auto || true
+          else
+            echo "No open release PR to auto-merge."
+          fi
 
       - name: Output Release Info
         if: ${{ steps.release.outputs.release_created }}
@@ -35,3 +73,16 @@ jobs:
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "Docker images will be built and tagged with this beta version." >> $GITHUB_STEP_SUMMARY
 
+  # Best-effort "What's New" highlights on the freshly-created release. Runs in
+  # this same workflow run (not a `release:` trigger) because release-please
+  # creates the release with GITHUB_TOKEN, which never starts new workflow runs.
+  whatsnew:
+    needs: release-please
+    if: ${{ needs.release-please.outputs.release_created }}
+    permissions:
+      contents: write   # edit the release body
+      models: read       # GitHub Models (free tier)
+    uses: ./.github/workflows/whatsnew-highlights.yml
+    with:
+      tag: ${{ needs.release-please.outputs.tag_name }}
+

.github/workflows/release-please.yml

@@ -2,7 +2,7 @@ name: Release Please
 
 on:
   push:
-    branches: [main]
+    branches: [stable]
 
 permissions:
   contents: write
@@ -20,10 +20,39 @@ jobs:
         uses: googleapis/release-please-action@v4
         id: release
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+          # Dedicated token so the release PR runs CI + can auto-merge without a
+          # manual review. Falls back to GITHUB_TOKEN before the secret is set (#719).
+          token: ${{ secrets.RELEASE_PLEASE_TOKEN || secrets.GITHUB_TOKEN }}
           config-file: release-please-config.json
           manifest-file: .release-please-manifest.json
 
+      # Auto-approve + auto-merge the open stable release PR. See the beta
+      # workflow for the full rationale. Skipped on the release-cutting run and
+      # whenever no PAT is configured.
+      - name: Auto-approve and enable auto-merge on the release PR
+        if: ${{ steps.release.outputs.release_created != 'true' }}
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          RELEASE_PAT: ${{ secrets.RELEASE_PLEASE_TOKEN }}
+          # No checkout in this job — set the repo explicitly so gh works
+          # without a git remote (same pattern as whatsnew, 2a5f0a8).
+          GH_REPO: ${{ github.repository }}
+        run: |
+          if [ -z "$RELEASE_PAT" ]; then
+            echo "RELEASE_PLEASE_TOKEN not set — skipping auto-merge (manual review still required)."
+            exit 0
+          fi
+          pr=$(gh pr list --head release-please--branches--stable --state open --json number --jq '.[0].number // empty')
+          if [ -n "$pr" ]; then
+            # Approve as github-actions[bot] (GITHUB_TOKEN, ≠ the PAT author) so it
+            # is a valid review; enable auto-merge as the PAT so the merge commit is
+            # attributed to a real identity and triggers the tag-cutting run (#719).
+            gh pr review "$pr" --approve --body "Automated approval — release-please version bump + changelog (#719)." || true
+            GH_TOKEN="$RELEASE_PAT" gh pr merge "$pr" --squash --auto || true
+          else
+            echo "No open release PR to auto-merge."
+          fi
+
       - name: Output Release Info
         if: ${{ steps.release.outputs.release_created }}
         run: |
@@ -34,3 +63,16 @@ jobs:
           echo "" >> $GITHUB_STEP_SUMMARY
           echo "Docker images will be built and tagged with this version." >> $GITHUB_STEP_SUMMARY
 
+  # Best-effort "What's New" highlights on the freshly-created release. Runs in
+  # this same workflow run (not a `release:` trigger) because release-please
+  # creates the release with GITHUB_TOKEN, which never starts new workflow runs.
+  whatsnew:
+    needs: release-please
+    if: ${{ needs.release-please.outputs.release_created }}
+    permissions:
+      contents: write   # edit the release body
+      models: read       # GitHub Models (free tier)
+    uses: ./.github/workflows/whatsnew-highlights.yml
+    with:
+      tag: ${{ needs.release-please.outputs.tag_name }}
+

.github/workflows/schema-drift.yml

@@ -0,0 +1,186 @@
+name: Schema drift (#530)
+
+# Verifies that `migrate:safe` can recover a DB that's been seeded only
+# by `initializeDatabase()` — the recovery scenario where the migrations
+# tracking table is empty but the schema already has the modern bootstrap.
+#
+# This is NOT how production reaches its state on normal installs or
+# upgrades. The scenario only fires when:
+#   - A backup was restored that captured tables but not the migrations
+#     table (manifest divergence),
+#   - Someone manually invoked initializeDatabase() outside the migration
+#     runner (recovery / debugging),
+#   - The DB was moved between systems and the migrations table was not
+#     copied along.
+#
+# When `detectExistingSchema()` sees the modern-bootstrap fingerprint
+# (photo_categories + cms_pages tables) but an empty migrations table,
+# it treats it as an "existing deployment" — which runs the legacy
+# chain first. Legacy/008 renames email_templates.subject → subject_en,
+# but core/029 (which runs later in this chain) inserts email templates
+# referencing the pre-rename column name. The chain dies with a
+# "column subject does not exist" error.
+#
+# Fix (in the same PR as this workflow): when the modern-bootstrap
+# fingerprint is detected, mark all legacy migrations as applied so the
+# chain matches what a fresh install runs — only core/*, in order.
+#
+# This workflow boots the failing scenario from scratch on every PR
+# that touches the migrations or db.js, so any future migration with
+# the same shape is caught before merge.
+
+on:
+  # No `paths:` filter — branch protection on `main` + `stable` lists
+  # `upgrade-from-bootstrap` as a REQUIRED check. A path-filtered
+  # trigger that skipped on unrelated PRs would leave the required
+  # check "missing" forever, blocking every PR that doesn't touch
+  # migrations. The ~75-second cost on every PR buys an unconditional
+  # safety net. (Branches also updated post-#669 rename: beta → main,
+  # old main → stable.)
+  push:
+    branches: [main, stable]
+  pull_request:
+    branches: [main, stable]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  upgrade-from-bootstrap:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    services:
+      postgres:
+        image: postgres:15-alpine
+        env:
+          POSTGRES_USER: picpeak
+          POSTGRES_PASSWORD: testpass
+          POSTGRES_DB: picpeak_drift
+        options: >-
+          --health-cmd "pg_isready -U picpeak -d picpeak_drift"
+          --health-interval 2s
+          --health-timeout 2s
+          --health-retries 30
+        ports:
+          - 5432:5432
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+          cache-dependency-path: backend/package-lock.json
+
+      - name: Install backend deps
+        working-directory: ./backend
+        run: npm ci
+
+      # Step 1: simulate the recovery state — DB has the modern bootstrap
+      # (post-initializeDatabase) but no migrations recorded. Calling
+      # initializeDatabase() directly outside the migration runner is the
+      # one-line repro for backup-restore-lost-migrations and manual-
+      # invocation paths.
+      - name: Seed DB with initializeDatabase() only
+        working-directory: ./backend
+        env:
+          NODE_ENV: production
+          DATABASE_CLIENT: pg
+          DB_HOST: localhost
+          DB_PORT: 5432
+          DB_USER: picpeak
+          DB_PASSWORD: testpass
+          DB_NAME: picpeak_drift
+        run: |
+          node -e "require('./src/database/db').initializeDatabase().then(() => { console.log('bootstrap ok'); process.exit(0); }).catch(e => { console.error('bootstrap FAILED:', e.message); process.exit(1); })"
+
+      # Sanity-check the recovery shape before migrate:safe runs. If
+      # initializeDatabase() ever stops producing photo_categories +
+      # cms_pages, the fingerprint check would silently no-op and this
+      # workflow would lose its teeth — assert the precondition.
+      - name: Assert recovery-state fingerprint
+        env:
+          PGPASSWORD: testpass
+        run: |
+          installed=$(psql -h localhost -U picpeak -d picpeak_drift -tAc "SELECT count(*) FROM pg_tables WHERE schemaname='public' AND tablename IN ('photo_categories', 'cms_pages')")
+          if [ "$installed" != "2" ]; then
+            echo "FAIL: expected photo_categories + cms_pages from initializeDatabase(); got $installed."
+            psql -h localhost -U picpeak -d picpeak_drift -c "SELECT tablename FROM pg_tables WHERE schemaname='public' ORDER BY tablename"
+            exit 1
+          fi
+          # initializeDatabase() doesn't create the `migrations` tracking
+          # table — that's the migrate:safe runner's job. So in the recovery
+          # scenario, the table either (a) doesn't exist yet or (b) exists
+          # but is empty (e.g. someone created it but didn't populate it).
+          # Both are valid recovery states; check via to_regclass first so
+          # we don't parse a SELECT against a nonexistent table.
+          has_migrations_table=$(psql -h localhost -U picpeak -d picpeak_drift -tAc "SELECT to_regclass('public.migrations')::text")
+          if [ -z "$has_migrations_table" ]; then
+            migrations_count=0
+          else
+            migrations_count=$(psql -h localhost -U picpeak -d picpeak_drift -tAc "SELECT count(*) FROM migrations")
+          fi
+          if [ "$migrations_count" != "0" ]; then
+            echo "FAIL: migrations table should be empty for the recovery scenario; has $migrations_count rows."
+            exit 1
+          fi
+          echo "ok: recovery state confirmed (bootstrap tables present, migrations table empty or absent)."
+
+      # Step 2: run migrate:safe — the test. Before #530's fix in
+      # detectExistingSchema, this died at core/029 with a "column
+      # subject does not exist" error. After the fix, it should complete
+      # cleanly with every migration either applied or marked.
+      - name: Run migrate:safe against the recovery state
+        working-directory: ./backend
+        env:
+          NODE_ENV: production
+          DATABASE_CLIENT: pg
+          DB_HOST: localhost
+          DB_PORT: 5432
+          DB_USER: picpeak
+          DB_PASSWORD: testpass
+          DB_NAME: picpeak_drift
+        run: npm run migrate:safe
+
+      # Step 3: schema-shape assertion. A fresh install through migrate:
+      # safe produces 48 tables; the recovery scenario should converge
+      # to the same number. Off-by-one is fine but a 10+ table delta
+      # means a migration silently bailed in the recovery path.
+      - name: Assert final schema matches fresh-install shape
+        env:
+          PGPASSWORD: testpass
+        run: |
+          tables=$(psql -h localhost -U picpeak -d picpeak_drift -tAc "SELECT count(*) FROM pg_tables WHERE schemaname='public'")
+          echo "Final table count: $tables"
+          # Allow a small drift window — exact count creeps over time as
+          # new migrations land; tight pin would force a workflow edit
+          # on every schema PR. 40+ is a healthy floor that catches the
+          # original bug (which left 17 tables) while staying robust to
+          # forward changes.
+          if [ "$tables" -lt 40 ]; then
+            echo "FAIL: too few tables ($tables) — migrate:safe likely bailed mid-chain."
+            psql -h localhost -U picpeak -d picpeak_drift -c "SELECT tablename FROM pg_tables WHERE schemaname='public' ORDER BY tablename"
+            exit 1
+          fi
+          echo "ok: schema converged to a fresh-install-equivalent shape."
+
+      # Step 4: verify the legacy migrations were all marked applied
+      # (rather than silently bailing inside the chain). The fix in
+      # detectExistingSchema marks legacy/* when the modern bootstrap
+      # is detected — confirm the markings actually landed.
+      - name: Assert legacy migrations marked applied
+        env:
+          PGPASSWORD: testpass
+        run: |
+          legacy_count=$(psql -h localhost -U picpeak -d picpeak_drift -tAc "SELECT count(*) FROM migrations WHERE filename LIKE '008_%' OR filename LIKE '009_%' OR filename LIKE '013_%' OR filename LIKE '019_%' OR filename LIKE '020_%' OR filename LIKE '026_%' OR filename LIKE '028_%'")
+          if [ "$legacy_count" -lt 7 ]; then
+            echo "FAIL: legacy migrations not marked applied ($legacy_count of 7 expected)."
+            psql -h localhost -U picpeak -d picpeak_drift -c "SELECT filename FROM migrations WHERE filename LIKE '0%' ORDER BY filename"
+            exit 1
+          fi
+          echo "ok: legacy migrations marked applied by detectExistingSchema."

.github/workflows/tests.yml

@@ -0,0 +1,89 @@
+name: Tests
+
+# Runs the backend Jest suite and the frontend Vitest suite on every PR.
+# Both suites already exist and cover the CRM service layer (quoteService,
+# contractService, invoiceService.*, customerHoursService, eventService.
+# calendar) plus the photo / settings / OG / auth surface — wiring them
+# into CI makes regressions visible at PR time instead of post-merge.
+#
+# Six backend suites are excluded via --testPathIgnorePatterns. They
+# fail on `upstream/beta` too (pre-existing mock/infra issues, NOT CRM
+# regressions). Excluding them here keeps CI green from day 1; revisit
+# each individually as its own fix.
+#
+# Triggers on any change that could affect either suite. The backend
+# job intentionally omits frontend paths and vice versa so unrelated
+# PRs don't pay both build costs.
+
+on:
+  push:
+    branches: [main, beta]
+  pull_request:
+    branches: [main, beta]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  backend:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+          cache-dependency-path: backend/package-lock.json
+
+      - name: Install backend deps
+        working-directory: ./backend
+        run: npm ci
+
+      - name: Run Jest suite
+        working-directory: ./backend
+        env:
+          # backupService tests would otherwise try a real S3 round-trip.
+          # The S3 path itself is covered separately by the integration
+          # suite when MinIO is provisioned.
+          SKIP_S3_TESTS: 'true'
+        run: |
+          # Excluded suites — fail on upstream/beta too, tracked
+          # separately as test-infra debt:
+          #   adminSettings.logo                  — supertest fixture
+          #   integration/adminPhotos.reference   — supertest fixture
+          #   integration/webhookDelivery         — supertest fixture
+          #   services/backupService.enhanced     — knex mock chain
+          #   routes/__tests__/adminAuth          — supertest fixture
+          # (adminNotifications was excluded; #597 fix re-enables it.)
+          npx jest \
+            --testPathIgnorePatterns='/node_modules/|adminSettings\.logo\.test|integration/adminPhotos\.reference|integration/webhookDelivery|backupService\.enhanced|routes/__tests__/adminAuth' \
+            --ci
+
+  frontend:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install frontend deps
+        working-directory: ./frontend
+        run: npm ci
+
+      - name: Run Vitest suite
+        working-directory: ./frontend
+        run: npm test -- --run

.github/workflows/whatsnew-highlights.yml

@@ -0,0 +1,98 @@
+# What's New highlights — GitHub Models release step (reusable)
+#
+# Called by the release-please workflows AFTER a release is created
+# (release-please.yml for `stable`, release-please-beta.yml for `main`). It runs
+# as a job in the SAME workflow run rather than on its own `release: published`
+# trigger, because release-please creates the release with the default
+# GITHUB_TOKEN and GitHub does not start new workflow runs from token-generated
+# events — a standalone `release:` workflow would simply never fire.
+#
+# What it does: condenses the new release's "### Features" into <=8 short
+# bullets via GitHub Models (free tier, `models: read`) and injects a
+# `<!-- whatsnew -->` block at the top of the release notes. The app reads that
+# block (backend utils/whatsNew.parseWhatsNew) and falls back to the raw
+# Features list for releases without it — so this is purely a quality upgrade,
+# never a hard dependency. Failure is isolated by `continue-on-error` + the
+# deterministic fallback below, so it can never break a release.
+#
+# GitHub Models is OPTIONAL. If it is disabled/unavailable for the org the AI
+# step fails soft (continue-on-error) and the deterministic fallback produces
+# the bullets instead — the feature works either way, Models just polishes them.
+#
+# Validated end-to-end on a fork (extract -> openai/gpt-4o-mini -> inject into
+# real release notes; app parseWhatsNew() reads the block back).
+
+name: What's New highlights
+
+on:
+  workflow_call:
+    inputs:
+      tag:
+        description: Release tag to annotate (e.g. v2.3.0)
+        required: true
+        type: string
+
+jobs:
+  highlights:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write   # to edit the release body
+      models: read      # GitHub Models (free tier)
+    # GH_REPO at job scope so every `gh` call targets the right repo without
+    # needing an actions/checkout step. Without this, `gh` falls back to
+    # parsing `.git/config` in the runner's empty workspace and dies with
+    # "fatal: not a git repository" — which hard-fails the whole job before
+    # any continue-on-error can save it.
+    env:
+      GH_REPO: ${{ github.repository }}
+    steps:
+      - name: Extract Features from the published release
+        id: feat
+        # Belt-and-braces: the job-level comment says "never let highlights
+        # break a release", but the original wiring only marked the AI +
+        # inject steps as continue-on-error. A hiccup here (rate limit,
+        # transient API error) would still hard-fail the job. Match the
+        # design intent and fail soft.
+        continue-on-error: true
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG: ${{ inputs.tag }}
+        run: |
+          BODY=$(gh release view "$TAG" --json body -q .body)
+          FEATURES=$(printf '%s\n' "$BODY" | awk '/^#{2,4} +Features/{f=1;next} /^#{1,4} +\S/{f=0} f')
+          { echo "features<<EOF"; printf '%s\n' "$FEATURES"; echo EOF; } >> "$GITHUB_OUTPUT"
+
+      - name: Summarize with GitHub Models
+        if: ${{ steps.feat.outputs.features != '' }}
+        id: ai
+        continue-on-error: true   # Models may be disabled/unavailable for the org; fall back deterministically below
+        uses: actions/ai-inference@v1
+        with:
+          model: openai/gpt-4o-mini   # catalog id (verified present); openai/gpt-4.1-mini or openai/gpt-5-nano also work
+          system-prompt: >
+            You write release highlights for the admins of a self-hosted
+            photo-gallery + CRM app. Given raw changelog "Features" lines, output
+            AT MOST 8 markdown bullets, each 3-4 words, user-facing, no scopes,
+            no jargon, no issue numbers. One bullet per distinct user-visible
+            feature. Output ONLY "- " bullets, nothing else.
+          prompt: ${{ steps.feat.outputs.features }}
+
+      - name: Inject the What's New block
+        if: ${{ steps.feat.outputs.features != '' }}
+        continue-on-error: true   # never let highlights break a release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG: ${{ inputs.tag }}
+          AI: ${{ steps.ai.outputs.response }}
+          FEATURES: ${{ steps.feat.outputs.features }}
+        run: |
+          BULLETS="$AI"
+          # Deterministic fallback if the model returned nothing (e.g. Models not yet enabled).
+          if [ -z "$BULLETS" ]; then
+            BULLETS=$(printf '%s\n' "$FEATURES" | head -8 \
+              | sed -E 's/^\* \*\*[^:]+:\*\* */- /; s/ \(\[[^]]*\]\([^)]*\)\)//g')
+          fi
+          BODY=$(gh release view "$TAG" --json body -q .body)
+          # Idempotent: strip any prior block before re-injecting.
+          BODY=$(printf '%s' "$BODY" | perl -0pe 's/<!--\s*whatsnew\s*-->.*?<!--\s*\/whatsnew\s*-->\n*//is')
+          gh release edit "$TAG" --notes "$(printf '<!-- whatsnew -->\n%s\n<!-- /whatsnew -->\n\n%s' "$BULLETS" "$BODY")"

.gitignore

@@ -129,3 +129,6 @@ docker-compose.dev.yml
 
 # New layout development files
 new-layouts/
+
+# Generated CRM/accounting documents (runtime) — never commit
+backend/storage/business-docs/

.release-please-manifest-beta.json

@@ -1,3 +1,3 @@
 {
-  ".": "3.42.0-beta.0"
+  ".": "3.79.1-beta.0"
 }

CODE_OF_CONDUCT.md

@@ -20,7 +20,7 @@ We are committed to providing a welcoming and inspiring community for all photog
 
 ## Enforcement
 
-Instances of unacceptable behavior may be reported by [opening an issue](https://github.com/the-luap/picpeak/issues/new?labels=conduct) on GitHub. All complaints will be reviewed and investigated promptly and fairly.
+Instances of unacceptable behavior may be reported by [opening an issue](https://github.com/PicPeak/picpeak/issues/new?labels=conduct) on GitHub. All complaints will be reviewed and investigated promptly and fairly.
 
 ## Attribution
 

CONTRIBUTING.md

@@ -33,12 +33,12 @@ Enhancement suggestions are tracked as GitHub issues. When creating an enhanceme
 
 Unsure where to begin? You can start by looking through these issues:
 
-* [Good first issues](https://github.com/the-luap/picpeak/labels/good%20first%20issue) - issues which should only require a few lines of code
-* [Help wanted issues](https://github.com/the-luap/picpeak/labels/help%20wanted) - issues which need extra attention
+* [Good first issues](https://github.com/PicPeak/picpeak/labels/good%20first%20issue) - issues which should only require a few lines of code
+* [Help wanted issues](https://github.com/PicPeak/picpeak/labels/help%20wanted) - issues which need extra attention
 
 ### Pull Requests
 
-1. **Fork the repo** and create your branch from `main`
+1. **Fork the repo** and create your branch from `main` (active development)
 2. **Install dependencies**:
    ```bash
    cd backend && npm install
@@ -50,7 +50,10 @@ Unsure where to begin? You can start by looking through these issues:
    - Linting passes: `npm run lint`
 4. **Write tests** if you've added code
 5. **Update documentation** if needed
-6. **Create a Pull Request**
+6. **Attach a screenshot for any UI change** (see below)
+7. **Create a Pull Request**
+
+> **📸 Screenshots are required for UI changes.** Any PR that changes a user-facing surface — a component, page, layout, style, or in-app copy — must include at least one screenshot of the result in the PR description, showing before/after where it helps reviewers see the difference. PRs that touch the UI without a screenshot will be asked to add one before review. Backend-only or otherwise non-visual changes don't need one.
 
 ## 💻 Development Setup
 
@@ -79,6 +82,15 @@ cp .env.example .env
 docker-compose -f docker-compose.dev.yml up
 ```
 
+**After pulling changes that touch `backend/package.json` / `backend/package-lock.json` (or the frontend equivalents)**, rebuild the affected image so the live-mounted source can `require()` the new deps:
+
+```bash
+docker compose -f docker-compose.dev.yml up -d --build backend
+# (or `frontend`, or both)
+```
+
+The dev compose bakes `node_modules` into the image while live-mounting `./backend/src` and `./frontend/src` from disk. A dep added on disk won't be picked up until the image is rebuilt — typical symptom is a `MODULE_NOT_FOUND` restart loop on the affected container.
+
 ### Running Tests
 
 ```bash
@@ -144,17 +156,37 @@ picpeak/
 │   └── public/          # Static assets
 ```
 
+## 🌿 Branch model
+
+PicPeak runs on two long-lived branches:
+
+| Branch | Role | What targets it |
+|---|---|---|
+| **`main`** | Active development. The next release is being assembled here. | Feature PRs. Most bugfix PRs. |
+| **`stable`** | Curated release channel. Production-recommended. | Urgent bugfix backports only — small, surgical PRs that land cleanly without dragging in unrelated changes. |
+
+### Which branch should my PR target?
+
+- **New feature** → target `main`.
+- **Bugfix that ONLY affects active dev** → target `main`.
+- **Bugfix that current stable users need** → open a small PR against `main`, AND a separate small PR against `stable` with the same change. Keep both surgical so each lands cleanly.
+
+**Hard rule on PR scope**: bugfix PRs against `stable` must be small enough to backport without conflict. Omnibus PRs (e.g. five unrelated sub-features) are fine for `main`, but never for `stable` — they make the next `main → stable` merge painful and break the "stable is always shippable" invariant.
+
+If you're not sure which branch to target, default to `main` and a maintainer will retarget during review.
+
 ## 🔄 Release Process
 
-1. Update version numbers in package.json files
-2. Update CHANGELOG.md
-3. Create a new release on GitHub
-4. Docker images are automatically built and published
+Releases are cut independently from `main` (pre-release versions for the active channel) and `stable` (semver releases for the curated channel). `release-please` handles version bumps, changelog generation, and Docker image publication automatically — contributors don't update `package.json` or `CHANGELOG.md` by hand.
+
+Periodic `main → stable` merges promote a batch of `main` work to the stable channel. The maintainer chooses when (typically every ~4 weeks, sooner if a hot bug demands it).
+
+See [RELEASING.md](RELEASING.md) for the full operational doc (promotion criteria, conflict-resolution checklist for the `main → stable` merge, hotfix backport path, versioning rules).
 
 ## 📮 Contact
 
-- Create an [issue](https://github.com/the-luap/picpeak/issues) for bugs or features
-- Join [discussions](https://github.com/the-luap/picpeak/discussions) for questions
-- Security issues: Open a [security issue](https://github.com/the-luap/picpeak/issues/new?labels=security) on GitHub
+- Create an [issue](https://github.com/PicPeak/picpeak/issues) for bugs or features
+- Join [discussions](https://github.com/PicPeak/picpeak/discussions) for questions
+- Security issues: Open a [security issue](https://github.com/PicPeak/picpeak/issues/new?labels=security) on GitHub
 
 Thank you for contributing! 🎉

README.md

@@ -1,5 +1,13 @@
 # 📸 PicPeak - Open Source Photo Sharing for Events
 
+> [!IMPORTANT]
+> **PicPeak has moved to its own GitHub organization.**
+>
+> - **Docker images** are now published at `ghcr.io/picpeak/picpeak/{backend,frontend}`. The old path (`ghcr.io/the-luap/picpeak/...`) is no longer served — update your `docker-compose.yml`.
+> - **Branches**: active development is now on `main` (was `beta`); the curated stable channel is now `stable` (was `main`). Existing PRs and clones auto-redirect via GitHub.
+>
+> See **[`docs/migration-to-org.md`](docs/migration-to-org.md)** for the one-line `docker-compose.yml` edit and full details.
+
 <div align="center">
   <img src="docs/picpeak-logo.png" alt="PicPeak Logo" width="300" />
   
@@ -49,6 +57,7 @@ Unlike expensive SaaS solutions, PicPeak gives you:
 - 🔐 **Password Protection** - Secure client galleries
 - 📧 **Automated Emails** - Creation confirmations and expiration warnings
 - 📊 **Analytics Dashboard** - Track views, downloads, and engagement
+- 📽️ **Live Slideshow** - A separate fullscreen "Diashow" link per event for projectors at live events — auto-picks-up new uploads while it runs, with transitions, a logo watermark, and image-fit/colour options ([guide](docs/live-slideshow.md))
 - 🎨 **Custom Themes** - Match your brand perfectly
 - 🌐 **Public Landing Page** - Publish a curated marketing page when guests visit your root URL
 
@@ -68,40 +77,57 @@ Unlike expensive SaaS solutions, PicPeak gives you:
 - 🛡️ **Security First** - JWT auth, rate limiting, CORS protection
 - 📈 **Scalable** - From small studios to large agencies
 
+### For Studios — CRM & Accounting (Beta · off by default)
+- 📝 **Quotes → Contracts → Invoices** - One deal lineage; cancel-and-reissue (Storno) keeps issued invoices immutable
+- ⏱️ **Hours Logging & Calendar** - Per-customer time tracking; admin calendar of events, logged hours, and pending quotes/contracts
+- 🧾 **Inbound Supplier Invoices & Expenses** - Capture received invoices (upload/camera, rasterised server-side), categorise, and re-bill costs to clients
+- 📊 **Tax Report & Accountant Export** - Period-scoped income/cost report with VAT breakdown; PDF/CSV plus a Treuhänder/Banana (Swiss/LI) journal export, scopable to income-only or cost-only
+- 🌍 **VAT & Multi-currency** - Single VAT-code registry snapshotted onto each document; data-driven per-country rates
+- ⚠️ **Verify locally** - Feature-flagged off by default. Seeded contracts, QR/IBAN and tax defaults are **examples only** — review your own legal **and tax** regulations first (see disclaimers below)
+
 ## 🚀 Quick Start
 
 Get PicPeak running in under 5 minutes:
 
 ```bash
 # Clone the repository
-git clone https://github.com/the-luap/picpeak.git
+git clone https://github.com/PicPeak/picpeak.git
 cd picpeak
 
-# Copy environment template
+# Copy the environment template — the defaults work out of the box.
+# Machine secrets (JWT, DB, Redis) are auto-generated on first run, and the
+# admin account is created in the browser (see below). Edit .env only to
+# customise (domain, SMTP, storage paths, …) — nothing is required.
 cp .env.example .env
 
-# Edit configuration (required: JWT_SECRET)
-nano .env
-
 # Start with Docker Compose
 docker compose up -d
 
 # Access at http://localhost:3000
 ```
 
-Note on Docker file permissions (PUID/PGID)
-- When using bind mounts (e.g., `./storage`, `./data`, `./logs`, `./events`), ensure the container user can write to these host folders. The backend runs as a non‑root user by default.
-- Set `PUID` and `PGID` in your `.env` to match your host user’s UID/GID (run `id -u` and `id -g` on the host). Compose maps the container user to these values.
-- Example in `.env`:
-  - `PUID=1000`
-  - `PGID=1000`
-- Without this, creating events, uploads, thumbnails, or logs can fail with "Permission denied".
+### First run — create your admin account
+
+On first start with no `ADMIN_PASSWORD` set, PicPeak has **no admin account yet** and greets you with an in-browser setup screen — no credentials in `.env`:
+
+1. Open **http://localhost:3000/admin** — you'll be redirected to `/setup`.
+2. Grab the **one-time setup token** from the backend logs (it's also saved to `data/SETUP_TOKEN`):
+   ```bash
+   docker compose logs backend | grep -i "setup token"
+   ```
+3. Paste the token, set your admin **email + password**, and you're in. The token is single-use, and the setup screen closes permanently once an admin exists.
+
+> Prefer the old behaviour? Set `ADMIN_PASSWORD` in `.env` and PicPeak auto-creates the admin on first boot instead (credentials written to `data/ADMIN_CREDENTIALS.txt`).
+
+Note on Docker file permissions
+- The backend container starts as root, chowns bind-mounted host directories (`./storage`, `./data`, `./logs`) to UID 1001 (`nodejs`), then drops privileges via `su-exec` before running the app. No host-side setup needed for fresh installs.
+- If you pin `user:` in a compose override (e.g. to map a specific host UID), the self-chown is skipped and you must pre-chown the host directories to that UID — see [docs.picpeak.app/deployment/docker#permissions](https://docs.picpeak.app/deployment/docker#permissions).
 
 **ARM64 (aarch64) systems:** Pre-built images include native `linux/arm64`, no platform flags or emulation needed. If you're on an older image tag that's still amd64-only, see [docker-compose.amd64.override.yml](docker-compose.amd64.override.yml) for a transitional fallback.
 
 ## 🔄 Release Channels
 
-PicPeak offers two release channels for different needs:
+PicPeak offers two release channels for different needs. Stable promotions are cut from a known-good beta point every 4–6 weeks — see [RELEASING.md](RELEASING.md) for the maintainer's promotion criteria and cadence policy.
 
 ### Stable Channel (Recommended)
 - Production-ready releases
@@ -150,7 +176,8 @@ Full documentation lives at **[docs.picpeak.app](https://docs.picpeak.app)** —
 - 🚀 [**Deployment**](https://docs.picpeak.app/deployment) - Docker, environment variables, reverse proxy, SSL
 - ⚙️ [**Admin Settings**](https://docs.picpeak.app/guides/admin-settings) - Every tab in the Settings panel
 - 🎯 [**Creating Events**](https://docs.picpeak.app/guides/creating-events) - Full event field reference
-- 💾 [**Backup & Restore**](https://docs.picpeak.app/guides/backup-restore) - Local, S3, rsync destinations
+- 📽️ [**Live Slideshow**](https://docs.picpeak.app/features/live-slideshow) - Fullscreen projector view that auto-updates during live events
+- 💾 [**Backup & Restore**](https://docs.picpeak.app/guides/backup-restore) - Backup configuration, restore wizard, full disaster recovery
 - 🔌 [**API Reference**](https://docs.picpeak.app/api) - REST endpoints, OpenAPI spec, webhooks
 - 🪝 [**Webhooks**](https://docs.picpeak.app/features/webhooks) - Event payloads, signing, filters, templates
 
@@ -181,6 +208,7 @@ Perfect for:
 - 📸 **Portrait Studios** - Client galleries with download limits
 - 🏢 **Corporate Events** - Internal photo sharing with branding
 - 🎓 **School Photography** - Secure parent access with expiration
+- 📽️ **Live Events** - Put a [Live Slideshow](docs/live-slideshow.md) on the venue projector that updates as you shoot
 
 ## 🏗️ Tech Stack
 
@@ -295,7 +323,12 @@ For local development with a receiver on the same machine or docker network, set
 
 ### Minimum Requirements
 - **CPU**: 2 CPU cores
-- **RAM**: 2GB minimum
+- **RAM**: **4 GB minimum** for a normal photo-upload workload — sharp/libvips
+  decodes the full uncompressed frame before resize, and the default two
+  worker loops at sharp-concurrency 2 can push peak RSS past 1.5 GB on a
+  batch of 20-MP+ photos. On a 2 GB VPS that's enough to OOM-kill the
+  backend mid-batch (surfaces as 503s on thumbnails — see [Low-memory
+  hosts](#low-memory-hosts) below for the recipe to run on 2 GB).
 - **Storage**: 20GB minimum (plus photo storage needs)
 - **OS**: Linux (Ubuntu 20.04+), macOS, or Windows with WSL2
 - **Node.js**: v18.0.0 or higher
@@ -305,6 +338,26 @@ For local development with a receiver on the same machine or docker network, set
 - **Docker**: v20.10.0+
 - **Docker Compose**: v2.0.0+
 
+### Low-memory hosts
+
+Running on 2 GB RAM (e.g. an entry-level VPS) is workable but requires
+tuning the upload-processor concurrency down. The backend auto-detects
+total RAM at startup via `os.totalmem()` — on a host that reports < 3 GB,
+it defaults `UPLOAD_PROCESSOR_CONCURRENCY` to **1** instead of 2 and logs
+a one-shot warning. You can pin the value explicitly in `.env`:
+
+```env
+# Single worker loop — slower batch processing, lower peak RSS
+UPLOAD_PROCESSOR_CONCURRENCY=1
+```
+
+The trade-off is throughput: a single worker processes one photo at a
+time, so a 100-photo batch takes ~2× as long but won't OOM. **Health-check
+note**: if the backend dies under memory pressure, the gallery serves
+`503 Service Unavailable` on thumbnails until Docker's
+`restart: unless-stopped` brings the container back. Persistent 503s
+during/after an upload batch on a low-memory host are almost always this.
+
 ### Video Support Requirements
 When enabling video uploads, consider these additional resources:
 
@@ -338,17 +391,23 @@ See our [Contributing Guide](CONTRIBUTING.md) for details.
 
 ## 📊 Comparison with Alternatives
 
-| Feature | PicPeak | PicDrop | Scrapbook.de |
-|---------|---------|---------|--------------|
-| Self-Hosted | ✅ | ❌ | ❌ |
-| Custom Branding | ✅ Full | Limited | Limited |
-| Monthly Cost | $0 | $29-199 | €19-99 |
-| Storage Limit | Unlimited* | 50-500GB | 100-1000GB |
-| Client Uploads | ✅ | ✅ | ✅ |
-| API Access | ✅ | Paid | ❌ |
-| Open Source | ✅ | ❌ | ❌ |
+| Feature | PicPeak | PicDrop | Scrapbook.de | Pixieset |
+|---------|---------|---------|--------------|----------|
+| Self-Hosted | ✅ | ❌ | ❌ | ❌ |
+| Custom Branding | ✅ Full | Limited | Limited | ✅ (paid) |
+| Monthly Cost | $0* | $29-199 | €19-99 | ~$60 |
+| Storage Limit | Unlimited** | 50-500GB | 100-1000GB | 3GB–Unlimited*** |
+| Client Uploads | ✅ | ✅ | ✅ | Limited |
+| API Access | ✅ | Paid | ❌ | ❌ |
+| Open Source | ✅ | ❌ | ❌ | ❌ |
+| Customer Accounts | ✅ | ❌ | ❌ | ✅ |
+| Quotes / Contracts / Invoices | 🧪 Beta | ❌ | ❌ | ✅ |
+| Incoming Invoices & Accounting | 🧪 Beta | ❌ | ❌ | ❌ |
 
-*Limited only by your server storage
+*You still bring your own server (own hardware or a VPS) and, if you want one, a domain.
+**Limited only by your server storage.
+***Pixieset's "unlimited" is photos only; video is capped by plan (roughly 0–10 h depending on tier).
+🧪 Beta = built but feature-flagged off by default (see [Beta Features](#-beta-features-use-at-your-own-risk)).
 
 ## 🛡️ Security
 
@@ -360,7 +419,7 @@ PicPeak takes security seriously:
 - 📝 Activity logging
 - 🔒 Secure file access
 
-Found a security issue? Please open a [security issue](https://github.com/the-luap/picpeak/issues/new?labels=security) on GitHub
+Found a security issue? Please open a [security issue](https://github.com/PicPeak/picpeak/issues/new?labels=security) on GitHub
 
 ## 📸 Screenshots
 
@@ -405,6 +464,7 @@ These features are currently in beta testing and may have limited functionality
 
 | Feature | Description | Status |
 |---------|-------------|--------|
+| **CRM & Accounting Module** | Quotes, contracts, invoices (+ Storno), hours logging, calendar, and tax report — plus inbound supplier-invoice capture, internal expenses, and a Treuhänder/Banana (Swiss/LI) accountant-journal export. Feature-flagged off by default. Seeded contract blocks, payment terms, IBAN / QR-bill and tax defaults are **examples only** and need legal / financial / **tax** review before customer-facing use. See [docs.picpeak.app/features/crm](https://docs.picpeak.app/features/crm). | 🧪 Beta |
 | **Simple Deployment Script** | One-click deployment script for quick server setup with automated configuration and dependency installation | 🧪 Beta |
 
 ### 📋 Future Enhancements
@@ -443,7 +503,8 @@ PicPeak is inspired by the best features of commercial platforms while remaining
 
 A huge thank you to the people whose code, reports, and feedback have shaped PicPeak:
 
-- [**@Luca-Timo**](https://github.com/Luca-Timo) — native Apple Silicon multi-arch images, external-URL toggle for legal CMS pages, the lazy-loaded folder tree picker, the admin-email picker on event creation, the data-driven self-hosted webfont system, the gallery header/banner decoupling, and several typed-API refactors. Consistently raises the bar with thoughtful PRs.
+- [**@the-luap**](https://github.com/the-luap) — creator and lead maintainer. Started the project and built PicPeak's foundation and the entire gallery experience (events, galleries, uploads, sharing, download protection, templates), plus backup & restore, analytics, system health, branding/theming, and WhatsApp notifications — and the architecture every later feature builds on.
+- [**@Luca-Timo**](https://github.com/Luca-Timo) — native Apple Silicon multi-arch images, external-URL toggle for legal CMS pages, the lazy-loaded folder tree picker, the admin-email picker on event creation, the data-driven self-hosted webfont system, the gallery header/banner decoupling, several typed-API refactors, and the CRM + accounting suite (quotes/contracts/invoices, hours logging, calendar, tax report, inbound supplier-invoice capture, expenses, and the Treuhänder/Banana export). Consistently raises the bar with thoughtful PRs.
 - [**@Rekoo-PS**](https://github.com/Rekoo-PS) — sharp-eyed bug reporter and product feedback. Filed the issues that drove the login-loop fix, the gallery-loading skeleton work, the redirection cleanup, the mobile-lightbox overhaul, the admin-events search-counter fix, the photo-count column, and the bulk-delete workflow. Also a [BuyMeACoffee](https://buymeacoffee.com/theluap) supporter — the kind of feedback loop that keeps the project useful for real deployments.
 
 If you've contributed and aren't listed here, please open a PR — this list is meant to grow.
@@ -458,6 +519,34 @@ This project was generated with the assistance of AI technology, but has been:
 
 We believe in transparent development practices and the responsible use of AI as a tool to accelerate development while maintaining high standards of quality and security.
 
+## ⚠️ CRM & Accounting disclaimers — examples only, verify locally
+
+The CRM & accounting modules (contracts, invoices, QR-bills, the tax
+report and the accountant exports) ship seeded content and computed
+figures that are intended as a **starting point only**:
+
+- **Contract blocks** (image rights, NDA, model release, cancellation,
+  jurisdiction, …) are written by the maintainer, **not by a lawyer**.
+  Every operator must have their lawyer review and adapt them before
+  sending any contract to a customer.
+- **QR-bills and SEPA EPC payloads** are rendered from the data you
+  typed. Picpeak is open source — please scan a test invoice with your
+  bank's app to check the QR actually works. We are not responsible for
+  any mistakes that come from sending an invoice with bad data on it.
+- **Tax, VAT & accounting figures** (the tax report, VAT-payable, the
+  per-rate breakdown, the Treuhänder / Banana export, etc.) are computed
+  from the data you enter and the defaults you configure. They are
+  **guidance only and jurisdiction-specific** — tax rules, VAT rates,
+  deduction schemes (e.g. the Liechtenstein 20 % Gewinnungskosten flat
+  rate) and filing duties differ by country and change over time. **Every
+  operator must check their own tax / VAT regulations and verify the
+  numbers with their accountant / Treuhänder / tax authority before
+  relying on any figure or export.** Picpeak makes no warranty that the
+  output is correct for your jurisdiction or situation.
+
+Read [`docs/crm-disclaimers.md`](docs/crm-disclaimers.md) before
+enabling the Contracts, Invoices or Accounting features.
+
 ## 📄 License
 
 PicPeak is released under the [MIT License](LICENSE). Use it freely for personal or commercial projects.
@@ -476,7 +565,7 @@ PicPeak is released under the [MIT License](LICENSE). Use it freely for personal
   <br>
   <a href="https://www.picpeak.app">Homepage</a> •
   <a href="https://demo.picpeak.app">Live Demo</a> •
-  <a href="https://github.com/the-luap/picpeak">GitHub</a> •
+  <a href="https://github.com/PicPeak/picpeak">GitHub</a> •
   <a href="https://docs.picpeak.app">Documentation</a> •
-  <a href="https://github.com/the-luap/picpeak/issues">Support</a>
+  <a href="https://github.com/PicPeak/picpeak/issues">Support</a>
 </p>

RELEASING.md

@@ -0,0 +1,94 @@
+# Release Process
+
+This document describes how PicPeak releases are cut. It's the maintainer's reference, not user documentation — for the user-facing channel choice (stable vs pre-release) see the [Release Channels section in README.md](README.md#-release-channels).
+
+## TL;DR
+
+- **`main` branch** receives all merged work (active development). Every push triggers a `release-please` PR that proposes the next `vX.Y.Z-beta.N` pre-release. Merging that PR tags the pre-release and publishes Docker images under the `:main` rolling tag + the version-specific tag.
+- **`stable` branch** holds the curated stable channel. Stable releases are cut from a known-good `main` point via a `release/X.Y.Z-merge-from-main` branch and a manual PR to `stable`. Merging that PR triggers `release-please` to propose the stable release.
+- Target cadence: **a stable release every 4–6 weeks**, or sooner if `main` has been quiet and ready for promotion.
+
+> **Branch model background** — `main` (active dev) was previously called `beta`, and `stable` (curated channel) was previously called `main`. The rename happened with #669 to match the convention every other open-source project uses. The mechanics below all reference the post-rename names.
+
+## Cadence target
+
+4–6 weeks between stable releases is the working target. Reasoning:
+
+- Long enough that each stable carries meaningful changes worth the upgrade burden.
+- Short enough that pre-release users aren't carrying the "real" project alone for months — the stable channel should actually be usable as the recommended channel for new installs.
+- Aligns with how release-please surfaces pre-releases (multiple pre-release points usually accumulate inside a 4–6 week window, which gives natural promotion candidates).
+
+This is a target, not a hard rule. Cut sooner if `main` has been quiet and stable longer than usual. Cut later if `main` is in flux for security or migration reasons.
+
+## Promotion criteria
+
+A `main` tip is eligible for promotion to `stable` when **all** of the following hold:
+
+1. **CI green on the candidate `main` tip.** Specifically: `schema-drift` (`upgrade-from-bootstrap`), `fresh-install`, `Tests` (backend Jest + frontend Vitest), the four `Build and Push Docker Images` arch matrices, and `GitGuardian Security Checks`.
+2. **No open `bug`-labelled issues against the candidate for at least 7 days.** Issues fixed-but-not-yet-closed count as fixed; verify their PR is in the candidate `main` tip before closing them out.
+3. **An upgrade walk has been done on real production-shaped data** — apply the candidate's migration chain to a snapshot of the previous stable's DB and verify no manual intervention is required. CI proves fresh-install works; the upgrade walk is what proves the upgrade path works.
+4. **Operator-time smoke** on the candidate: log in, create event, upload photos, share gallery, open as a customer, log out. Catches binary-incompatibility regressions and UI-level breaks that unit tests don't see.
+
+If any of the four fail, the promotion waits. File any blockers as `bug`-labelled issues and let them bake on `main` before re-evaluating.
+
+## How a stable release is cut
+
+The actual mechanics, in order:
+
+1. **Pick the `main` tip.** Confirm it satisfies the four promotion criteria above. Note the exact SHA — that's what you're promoting.
+
+2. **Create the release branch from the `main` tip.**
+   ```bash
+   git push origin <main-tip-sha>:refs/heads/release/X.Y.Z-merge-from-main
+   ```
+   Naming convention: `release/X.Y.Z-merge-from-main`, where `X.Y.Z` is the stable version you intend to land. release-please will write the actual `X.Y.Z` on merge — the branch name is just a human label.
+
+3. **Open a PR to `stable`.** Title: `chore(release): promote main → stable as vX.Y.Z`. Body should summarise the major themes since the previous stable, the migration count, and any operator notes (e.g. "this release adds 22 migrations; existing installs should snapshot before upgrading"). See PR #568 as a worked example (predates the rename; the mechanics are unchanged).
+
+4. **Resolve conflicts.** `stable` almost always has commits `main` doesn't (security backports, release-please's stable-channel release commits, README rewrites). For each conflicting file, decide deliberately:
+   - **`backend/package.json` / `package-lock.json` + `frontend/package.json` / `package-lock.json`** — usually take `main`'s version (superset), but verify any security-pinned deps (`axios`, `nodemailer`, `i18next-http-backend`, `multer`, `tar`) on `main` are `>=` the pinned versions on `stable`. If `stable` has a newer pinned version (e.g. an emergency CVE backport `main` hasn't picked up), take `stable`'s pin.
+   - **`README.md`** — keep `stable`'s version if it has had a recent rewrite that `main` didn't pick up; otherwise take `main`'s.
+   - **`CHANGELOG.md`** — keep `stable`'s; release-please regenerates entries on its next stable cut from the commits going forward.
+   - **`.release-please-manifest.json`** — keep `stable`'s; release-please owns this file.
+   - Any other auto-merged file — spot-check that the auto-merge produced something sensible, especially for security-sensitive files (`backend/src/middleware/`, `backend/src/utils/tokenUtils.js`).
+
+5. **Wait for CI on the PR.** All ten checks (the original eight plus `merge-backend` and `merge-frontend`) must be green. If anything fails, fix on the release branch (NOT on `main` — `main` has already moved on).
+
+6. **Merge.** Standard merge commit, not squash — the PR's history (the individual feature commits) carries forward into `stable`'s log.
+
+7. **release-please picks it up.** Within minutes, release-please will open a new `chore(stable): release X.Y.Z` PR proposing the stable release. Review the auto-generated CHANGELOG.md entries for accuracy, edit if needed, and merge. That merge creates the `vX.Y.Z` git tag, publishes Docker images on the `:stable` and `:latest` tags, and creates the GitHub Release page.
+
+8. **Close the loop.** Bulk-close any `bug` issues that were fixed-but-not-closed and now appear in the released changelog. Reference the merge commit so reporters know which version contains the fix.
+
+## Hotfix path (backport to current stable)
+
+If a critical bug or security issue affects the current stable and `main` has moved too far for a full promotion to be appropriate, backport just the fix:
+
+1. Create a `security/cve-backport-X.Y.Z` or `fix/critical-X.Y.Z` branch off `stable`.
+2. Cherry-pick or hand-write the minimal fix.
+3. Open a PR to `stable` with the smallest possible diff.
+4. After merge, release-please will propose a patch-level stable release (e.g. `v3.55.1`).
+5. **Forward-port the fix to `main`** if it isn't already there. Otherwise the next full promotion will reintroduce the bug.
+
+PR #412 ("backport 18 dependency CVE patches from beta") is a worked example of this path (predates the rename; the mechanics are unchanged).
+
+## Versioning
+
+PicPeak follows [Semantic Versioning](https://semver.org/) with one project-specific convention:
+
+- **MAJOR** bumps are reserved for breaking schema changes that require operator action on upgrade (e.g. a migration that's not safe to auto-apply, an env-var rename that can't be auto-detected).
+- **MINOR** bumps for new features, additive schema changes, and any change to the public HTTP API surface.
+- **PATCH** bumps for bug fixes and operator-invisible internal changes.
+- **Pre-release suffix** (`-beta.N`) for every `main`-channel cut; the `N` counter resets on each new MINOR or MAJOR target. The suffix kept the historical `-beta` literal even after the branch rename — operators were already pinning to `v3.x.y-beta.N` and changing the literal would have broken those pins.
+
+release-please derives all of this from conventional commit prefixes (`feat:`, `fix:`, `BREAKING CHANGE:`, etc.) automatically.
+
+## Things that don't go through this process
+
+- **Documentation-only changes** can land on either `stable` or `main` directly (no release cut needed); release-please will pick them up on the next regular release.
+- **Test-only changes** — same.
+- **CI / workflow changes** — same, but be aware they take effect on the branch they land on, so a CI fix targeting `main` won't fix a broken stable-channel workflow until the next promotion.
+
+## When this doc is wrong
+
+If you find yourself working around something here, update the doc before doing the workaround. The point of a written process is that future-you doesn't have to remember the workaround.

SECURITY.md

@@ -16,7 +16,7 @@ We take the security of PicPeak seriously. If you have discovered a security vul
 ### 1. **Do NOT create a public GitHub issue**
 
 ### 2. Report the vulnerability privately by:
-- **Preferred:** Use [GitHub Private Vulnerability Reporting](https://github.com/the-luap/picpeak/security/advisories/new)
+- **Preferred:** Use [GitHub Private Vulnerability Reporting](https://github.com/PicPeak/picpeak/security/advisories/new)
 - **Alternative:** Email us at **info@picpeak.app** with the details
 - Include:
   - Description of the vulnerability
@@ -82,7 +82,7 @@ We believe in responsible disclosure. Once a vulnerability is fixed:
 
 ## Contact
 
-- Security issues: Email **info@picpeak.app** or use [GitHub Private Vulnerability Reporting](https://github.com/the-luap/picpeak/security/advisories/new)
-- General support: [GitHub Issues](https://github.com/the-luap/picpeak/issues)
+- Security issues: Email **info@picpeak.app** or use [GitHub Private Vulnerability Reporting](https://github.com/PicPeak/picpeak/security/advisories/new)
+- General support: [GitHub Issues](https://github.com/PicPeak/picpeak/issues)
 
 Thank you for helping keep PicPeak and its users safe!

SIMPLE_SETUP.md

@@ -8,7 +8,7 @@ This guide provides easy installation instructions for PicPeak on Linux servers
 
 ```bash
 # Download and run the unified setup script
-curl -fsSL https://raw.githubusercontent.com/the-luap/picpeak/main/scripts/picpeak-setup.sh -o picpeak-setup.sh && \
+curl -fsSL https://raw.githubusercontent.com/PicPeak/picpeak/main/scripts/picpeak-setup.sh -o picpeak-setup.sh && \
 chmod +x picpeak-setup.sh && \
 sudo ./picpeak-setup.sh
 ```
@@ -163,6 +163,19 @@ sudo ./picpeak-setup.sh --native --unattended \
 - `picpeak-workers` - Background workers
 - `caddy` - Web server (optional)
 
+## 🔑 First Login — Create Your Admin
+
+If you installed with `picpeak-setup.sh` and gave an `--admin-password`, your admin account already exists — log in at `/admin` with that email and password.
+
+If you started PicPeak **without** setting `ADMIN_PASSWORD` (e.g. a plain `docker compose up`), there's **no admin yet** and you create it in the browser:
+
+1. Open `http://your-server:3000/admin` — you'll land on a setup screen.
+2. Get the **one-time setup token** from the backend logs (also saved to `data/SETUP_TOKEN`):
+   ```bash
+   docker compose logs backend | grep -i "setup token"
+   ```
+3. Paste it, set your admin email + password. The token is single-use and the screen closes once an admin exists.
+
 ## 🌐 Access Methods
 
 ### Direct Access (Simplest)
@@ -472,7 +485,7 @@ sudo -u picpeak node scripts/reset-admin-password.js
    - [Deployment Guide](https://docs.picpeak.app/deployment)
 
 3. **Support:**
-   - [GitHub Issues](https://github.com/the-luap/picpeak/issues)
+   - [GitHub Issues](https://github.com/PicPeak/picpeak/issues)
    - Include: Error messages, system info (`uname -a`), installation method
 
 ## 🔒 Security Best Practices
@@ -550,4 +563,4 @@ sudo ./picpeak-setup.sh --native \
 
 ---
 
-**PicPeak Setup v1.0** | [Documentation](https://github.com/the-luap/picpeak) | [Support](https://github.com/the-luap/picpeak/issues)
+**PicPeak Setup v1.0** | [Documentation](https://github.com/PicPeak/picpeak) | [Support](https://github.com/PicPeak/picpeak/issues)

backend/.env.example

@@ -10,18 +10,31 @@ PORT=3001
 JWT_SECRET=your-very-secure-jwt-secret-at-least-32-characters-long-example123456
 
 # Auth cookie Secure flag
-#   unset  - default: follows NODE_ENV (production=true, dev=false)
-#   true   - always set Secure (HTTPS-only cookies; breaks plain-HTTP access)
+#   unset  - default: 'auto' in production, false in dev (#427)
+#   true   - always set Secure (HTTPS-only cookies; breaks plain-HTTP access —
+#            login appears to succeed but the browser silently drops the
+#            cookie, leaving you in a redirect loop. Only set this if you
+#            ALWAYS reach the site via HTTPS)
 #   false  - never set Secure (allows HTTP; cookies not protected on HTTPS)
-#   auto   - decide per request: Secure on HTTPS, not on HTTP
+#   auto   - decide per request: Secure on HTTPS, not on HTTP. Reads
+#            req.secure from Express which respects X-Forwarded-Proto from a
+#            trusted reverse proxy. This is the default and is the right
+#            choice for most deployments.
 #
-# Use COOKIE_SECURE=auto if your deployment is reachable over both HTTPS
-# (via a reverse proxy like Nginx Proxy Manager, Traefik, Caddy) AND plain
-# HTTP (e.g. LAN access at http://192.168.x.x:3001). The backend reads
-# req.secure from Express, which respects the X-Forwarded-Proto header
-# when the proxy is in the trust list.
+# Why 'auto' is the default in production:
+#   - On real HTTPS (reverse proxy with X-Forwarded-Proto), req.secure is
+#     true → Secure flag is still emitted. No security regression vs. true.
+#   - On plain HTTP (LAN access, first-time install before reverse proxy is
+#     wired up), req.secure is false → Secure flag is omitted → login works
+#     instead of silently looping back to /admin/login.
 #
-# Requirements for auto mode:
+# When you'd set this explicitly:
+#   - COOKIE_SECURE=true → strict HTTPS-only deployments where you want
+#     defense in depth against accidentally serving over HTTP.
+#   - COOKIE_SECURE=false → you intentionally only ever serve over HTTP and
+#     don't want the per-request check (rare).
+#
+# Requirements for 'auto' mode to detect HTTPS correctly:
 #   1. Your reverse proxy MUST send X-Forwarded-Proto: https on HTTPS
 #      requests. Standard configs for NPM/Traefik/Caddy do this by default.
 #   2. The proxy must be on a trusted IP range. By default PicPeak trusts

backend/Dockerfile

@@ -7,7 +7,7 @@ ARG VCS_REF
 ARG VERSION
 
 # Add labels for GitHub Container Registry
-LABEL org.opencontainers.image.source="https://github.com/the-luap/picpeak"
+LABEL org.opencontainers.image.source="https://github.com/PicPeak/picpeak"
 LABEL org.opencontainers.image.description="PicPeak Backend Service"
 LABEL org.opencontainers.image.licenses="MIT"
 
@@ -30,17 +30,39 @@ WORKDIR /app
 # Upgrade all packages to fix security vulnerabilities (OpenSSL, libexpat, BusyBox CVEs)
 RUN apk upgrade --no-cache
 
-# Upgrade npm to fix tar, minimatch, brace-expansion CVEs in npm's own deps
-# Pin to 10.x to stay compatible with Node 22 Alpine (npm 11.x has dependency issues)
-RUN npm install -g npm@10
+# Upgrade the npm CLI in the final image so its bundled deps are patched
+# (sigstore 4.x, tar) — closes CVE-2026-48815 and the older @sigstore/core / tar
+# Trivy alerts. Safe here: only the CLI present in the image changes. Runtime
+# dependencies come from the builder stage (COPY --from=builder node_modules
+# below) and the entrypoint runs node, not npm — so npm 11's install behaviour
+# (the reason 10.x was pinned) never executes in this stage. npm 11 needs
+# Node >=22.9, satisfied by node:22-alpine.
+RUN npm install -g npm@11
 
 # Install dumb-init for proper signal handling, postgresql-client for database
-# checks, and ffmpeg for video upload support. Alpine's ffmpeg package ships
-# both `ffmpeg` and `ffprobe` built natively against musl libc — the npm
+# checks, ffmpeg for video upload support, and su-exec for the root → nodejs
+# privilege drop in wait-for-db.sh (see #484: container starts as root so it
+# can chown bind-mounted host volumes to UID 1001, then re-execs as nodejs
+# before running the app). Alpine's ffmpeg package ships both `ffmpeg` and
+# `ffprobe` built natively against musl libc — the npm
 # `@ffmpeg-installer/ffmpeg` binary is glibc-built and (a) doesn't reliably
 # run on Alpine and (b) only includes ffmpeg, not ffprobe (which the video
 # pipeline calls via fluent-ffmpeg.ffprobe()).
-RUN apk add --no-cache dumb-init postgresql-client ffmpeg
+# fontconfig is required so `sharp` (librsvg) can rasterise SVG logos that
+# contain live <text> for the CRM PDFs. Without any font installed, librsvg
+# renders text as tofu boxes (□) while the vector artwork still draws — i.e.
+# a "corrupted" logo on invoices/quotes. DejaVu/Liberation provide a broad
+# Unicode fallback; picpeak's own brand fonts (assets/fonts/, the same files
+# PDFKit + the web UI use) are registered with fontconfig further down so the
+# logo's text renders in its actual typeface, not a fallback.
+# poppler-utils provides `pdftoppm`, used to rasterise inbound supplier-invoice
+# PDFs to flat PNGs server-side so the admin UI NEVER renders a raw (possibly
+# malicious) PDF. pdftoppm does not execute embedded JS or fetch remote
+# resources, so it doubles as the SSRF/phone-home guard for untrusted inbound
+# documents (see docs/accounting-inbound-invoices.md).
+RUN apk add --no-cache dumb-init postgresql-client ffmpeg su-exec \
+    fontconfig ttf-dejavu ttf-liberation poppler-utils && \
+    fc-cache -f
 
 # Create non-root user
 RUN addgroup -g 1001 -S nodejs && adduser -S nodejs -u 1001
@@ -52,13 +74,30 @@ COPY --chown=nodejs:nodejs . .
 # Ensure all source files are readable and wait script is executable
 RUN chmod -R a+r /app && chmod +x wait-for-db.sh
 
+# Register picpeak's bundled brand fonts (assets/fonts/<Family>/*.ttf — the
+# same files PDFKit and the web UI use) with fontconfig, so when sharp/librsvg
+# rasterises an SVG logo its <text> renders in the actual brand typeface
+# rather than a DejaVu/Liberation fallback. fontconfig indexes by each font's
+# internal family name and recurses into the per-family subdirectories.
+RUN printf '<?xml version="1.0"?>\n<!DOCTYPE fontconfig SYSTEM "fonts.dtd">\n<fontconfig>\n  <dir>/app/assets/fonts</dir>\n</fontconfig>\n' > /etc/fonts/conf.d/99-picpeak-fonts.conf && \
+    fc-cache -f /app/assets/fonts
+
 # Create necessary directories
 RUN mkdir -p storage/events/active storage/events/archived storage/thumbnails data logs && \
     chown -R nodejs:nodejs storage data logs
 
-USER nodejs
+# No USER directive — the container starts as root so wait-for-db.sh can
+# chown bind-mounted host directories to UID 1001 before dropping privs
+# via su-exec. See #484 for the fresh-install restart loop this avoids.
 
 EXPOSE 3000
 
+# Healthcheck hits the same /health endpoint already used by the e2e
+# runner and by the docker-compose `depends_on: condition: service_healthy`
+# checks. wget is part of the Alpine base image. Long start-period covers
+# the wait-for-db.sh delay before the Node process starts listening.
+HEALTHCHECK --interval=30s --timeout=5s --start-period=60s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:3000/health || exit 1
+
 ENTRYPOINT ["dumb-init", "--"]
 CMD ["./wait-for-db.sh", "node", "server.js"]

backend/Dockerfile.dev

@@ -30,5 +30,8 @@ USER nodejs
 
 EXPOSE 3000
 
+HEALTHCHECK --interval=30s --timeout=5s --start-period=30s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:3000/health || exit 1
+
 ENTRYPOINT ["dumb-init", "--"]
 CMD ["npm", "run", "dev"]

backend/__tests__/integration/adminBackupCoverage.test.js

@@ -0,0 +1,242 @@
+/**
+ * Integration test for GET /api/admin/system-health/backup-coverage.
+ *
+ * Pins the Stage C diagnostic that tells admins what the next
+ * "Run Backup Now" will include, skip, or silently miss.
+ *
+ * Test surface:
+ *   1. Empty / fresh install → default seed (7 paths), inline mode,
+ *      no DB dump on file yet, no drift
+ *   2. Toggle `include_in_default=false` → coverage flips to
+ *      'skipped-by-toggle'
+ *   3. Feature_flag gating reflects the actual app_settings value
+ *      (events/archived ⇄ backup_include_archived)
+ *   4. Drift detection: a top-level subdir on disk with no
+ *      `backup_paths` row is flagged in `unconfiguredOnDisk`
+ *   5. Allow-list: `backups/` and `tmp/` are never flagged as drift
+ *   6. Scheduled-only mode + recent dump → `database.ok = true`
+ *   7. Scheduled-only mode + stale (>26h) dump → `database.ok = false`
+ *      and `lastDumpStale = true`
+ *
+ * Same auth/permission pass-through strategy as
+ * adminBackupIntegrity.test.js — we exercise the route's logic,
+ * not the auth middleware.
+ */
+
+const fs = require('fs');
+const path = require('path');
+const express = require('express');
+const request = require('supertest');
+
+const { bootCrmDb } = require('./helpers/crmDb');
+
+jest.mock('../../src/middleware/auth', () => ({
+  adminAuth: (req, _res, next) => { req.admin = { id: 1 }; next(); },
+  customerAuth: (_req, _res, next) => next(),
+  galleryAuth: (_req, _res, next) => next(),
+}));
+
+jest.mock('../../src/middleware/permissions', () => ({
+  requirePermission: () => (_req, _res, next) => next(),
+}));
+
+jest.setTimeout(30000);
+
+describe('GET /api/admin/system-health/backup-coverage', () => {
+  let db;
+  let cleanup;
+  let storagePath;
+  let app;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    storagePath = process.env.STORAGE_PATH;
+
+    const route = require('../../src/routes/adminSystemHealth');
+    app = express();
+    app.use(express.json());
+    app.use('/api/admin/system-health', route);
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  function mkdir(rel) {
+    fs.mkdirSync(path.join(storagePath, rel), { recursive: true });
+  }
+
+  function rmdir(rel) {
+    fs.rmSync(path.join(storagePath, rel), { recursive: true, force: true });
+  }
+
+  async function restoreDefaultPaths() {
+    await db('backup_paths').del();
+    const { DEFAULT_PATHS } = require('../../migrations/core/109_add_backup_paths');
+    await db('backup_paths').insert(DEFAULT_PATHS.map((row) => ({
+      ...row,
+      created_at: new Date(),
+      updated_at: new Date(),
+    })));
+  }
+
+  beforeEach(async () => {
+    await restoreDefaultPaths();
+    await db('database_backup_runs').del().catch(() => {});
+    await db('app_settings').where('setting_type', 'backup').del().catch(() => {});
+  });
+
+  it('returns the canonical 7 paths + database block on a fresh install', async () => {
+    const res = await request(app).get('/api/admin/system-health/backup-coverage');
+    expect(res.status).toBe(200);
+    expect(res.body).toHaveProperty('report');
+
+    const { report } = res.body;
+    expect(report.paths.map((p) => p.path)).toEqual([
+      'events/active',
+      'events/archived',
+      'thumbnails',
+      'previews',
+      'heroes',
+      'uploads',
+      'business-docs',
+    ]);
+
+    // Default mode is inline — no inline_dump setting present means
+    // "inline is ON" (matches ensureDatabaseDumpForBackup semantics).
+    expect(report.database.mode).toBe('inline');
+    expect(report.database.ok).toBe(true);
+
+    expect(report.summary).toMatchObject({
+      configuredCount: 7,
+      tableMissingFallbackInUse: false,
+    });
+  });
+
+  it('flips a path to skipped-by-toggle when include_in_default=false', async () => {
+    await db('backup_paths').where('path', 'thumbnails').update({
+      include_in_default: false,
+    });
+
+    const res = await request(app).get('/api/admin/system-health/backup-coverage');
+    const thumbnails = res.body.report.paths.find((p) => p.path === 'thumbnails');
+    expect(thumbnails.coverage).toBe('skipped-by-toggle');
+    expect(thumbnails.includeInDefault).toBe(false);
+  });
+
+  it('feature_flag gating reflects app_settings (archived path off vs on)', async () => {
+    // backup_include_archived not set → archived skipped via flag
+    const off = await request(app).get('/api/admin/system-health/backup-coverage');
+    const archivedOff = off.body.report.paths.find((p) => p.path === 'events/archived');
+    expect(archivedOff.coverage).toBe('skipped-by-feature-flag');
+    expect(archivedOff.featureFlag).toBe('backup_include_archived');
+    expect(archivedOff.featureFlagValue).toBe(null); // unset
+
+    // Now set the flag — but path is missing on disk, so coverage
+    // resolves to 'missing-on-disk', proving the flag was honoured.
+    await db('app_settings').insert({
+      setting_key: 'backup_include_archived',
+      setting_value: JSON.stringify(true),
+      setting_type: 'backup',
+    }).onConflict('setting_key').merge();
+
+    const on = await request(app).get('/api/admin/system-health/backup-coverage');
+    const archivedOn = on.body.report.paths.find((p) => p.path === 'events/archived');
+    expect(archivedOn.featureFlagValue).toBe(true);
+    // No on-disk dir → 'missing-on-disk' (not 'skipped-by-feature-flag')
+    expect(['missing-on-disk', 'will-scan']).toContain(archivedOn.coverage);
+  });
+
+  it('detects unconfigured top-level subdirs as drift', async () => {
+    mkdir('events/active');           // configured
+    mkdir('plugin-store/cache');      // DRIFT
+    mkdir('shiny-new-feature/data');  // DRIFT
+
+    const res = await request(app).get('/api/admin/system-health/backup-coverage');
+    expect(res.body.report.drift.unconfiguredOnDisk).toEqual(expect.arrayContaining([
+      'plugin-store',
+      'shiny-new-feature',
+    ]));
+    expect(res.body.report.drift.unconfiguredOnDisk).not.toContain('events');
+
+    rmdir('plugin-store');
+    rmdir('shiny-new-feature');
+  });
+
+  it('never flags backups/ or tmp/ as drift (allow-list)', async () => {
+    mkdir('backups');
+    mkdir('tmp');
+
+    const res = await request(app).get('/api/admin/system-health/backup-coverage');
+    expect(res.body.report.drift.unconfiguredOnDisk).not.toContain('backups');
+    expect(res.body.report.drift.unconfiguredOnDisk).not.toContain('tmp');
+    expect(res.body.report.drift.expectedNonBackupDirs).toEqual(
+      expect.arrayContaining(['backups', 'tmp']),
+    );
+
+    rmdir('backups');
+    rmdir('tmp');
+  });
+
+  it('scheduled-only mode + recent dump → database.ok=true, not stale', async () => {
+    await db('app_settings').insert({
+      setting_key: 'backup_database_inline_dump',
+      setting_value: JSON.stringify(false),
+      setting_type: 'backup',
+    }).onConflict('setting_key').merge();
+
+    const recentDump = path.join(storagePath, 'backups', 'recent.sql.gz');
+    fs.mkdirSync(path.dirname(recentDump), { recursive: true });
+    fs.writeFileSync(recentDump, 'pretend dump');
+    await db('database_backup_runs').insert({
+      started_at: new Date(),
+      completed_at: new Date(),  // just now
+      status: 'completed',
+      backup_type: 'pg',
+      file_path: recentDump,
+      file_size_bytes: fs.statSync(recentDump).size,
+      destination_path: recentDump,
+    });
+
+    const res = await request(app).get('/api/admin/system-health/backup-coverage');
+    expect(res.body.report.database.mode).toBe('scheduled-only');
+    expect(res.body.report.database.inlineDumpExplicitlyDisabled).toBe(true);
+    expect(res.body.report.database.lastDumpStale).toBe(false);
+    expect(res.body.report.database.ok).toBe(true);
+  });
+
+  it('scheduled-only mode + stale dump → database.ok=false, lastDumpStale=true', async () => {
+    await db('app_settings').insert({
+      setting_key: 'backup_database_inline_dump',
+      setting_value: JSON.stringify(false),
+      setting_type: 'backup',
+    }).onConflict('setting_key').merge();
+
+    const oldDump = path.join(storagePath, 'backups', 'old.sql.gz');
+    fs.mkdirSync(path.dirname(oldDump), { recursive: true });
+    fs.writeFileSync(oldDump, 'pretend old dump');
+    // 48 hours ago — well past the 26h staleness threshold. ISO
+    // string instead of a Date object because knex-sqlite's datetime
+    // serialisation has a quirk where some Date instances coerce to
+    // '[object Object]' on insert (the test 6 "recent dump" case
+    // passes only because `new Date()` happens to round-trip safely;
+    // arithmetic Dates don't).
+    const stale = new Date(Date.now() - 48 * 60 * 60 * 1000).toISOString();
+    await db('database_backup_runs').insert({
+      started_at: stale,
+      completed_at: stale,
+      status: 'completed',
+      backup_type: 'pg',
+      file_path: oldDump,
+      file_size_bytes: fs.statSync(oldDump).size,
+      destination_path: oldDump,
+    });
+
+    const res = await request(app).get('/api/admin/system-health/backup-coverage');
+    expect(res.body.report.database.lastDumpStale).toBe(true);
+    expect(res.body.report.database.ok).toBe(false);
+    // Top-level summary reflects the failed DB check.
+    expect(res.body.report.summary.databaseOk).toBe(false);
+    expect(res.body.report.summary.overallOk).toBe(false);
+  });
+});

backend/__tests__/integration/adminBackupIntegrity.test.js

@@ -0,0 +1,140 @@
+/**
+ * Integration test for GET /api/admin/system-health/backup-integrity.
+ *
+ * Auth + permission middleware are mocked to pass-through so the test
+ * focuses on the route's own behaviour: scope-param validation, the
+ * successResponse envelope, and that the underlying service report
+ * surfaces correctly in the JSON body.
+ *
+ * The verifier service itself is exercised against the real schema
+ * (bootCrmDb) and real filesystem — only the auth gate is stubbed.
+ */
+
+const fs = require('fs');
+const path = require('path');
+const express = require('express');
+const request = require('supertest');
+
+const { bootCrmDb, seedMinimal } = require('./helpers/crmDb');
+
+// Pass-through auth so we don't need to mint JWTs.
+jest.mock('../../src/middleware/auth', () => ({
+  adminAuth: (req, _res, next) => { req.admin = { id: 1 }; next(); },
+  customerAuth: (_req, _res, next) => next(),
+  galleryAuth: (_req, _res, next) => next(),
+}));
+
+// Pass-through permissions so settings.view always allows.
+jest.mock('../../src/middleware/permissions', () => ({
+  requirePermission: () => (_req, _res, next) => next(),
+}));
+
+jest.setTimeout(30000);
+
+describe('GET /api/admin/system-health/backup-integrity', () => {
+  let cleanup;
+  let db;
+  let customerId;
+  let app;
+  let storagePath;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ customerId } = await seedMinimal(db));
+    storagePath = process.env.STORAGE_PATH;
+
+    // Mount the route on a minimal Express app. Cold-require after
+    // bootCrmDb so the route's downstream `require('../database/db')`
+    // sees the same db instance.
+    const route = require('../../src/routes/adminSystemHealth');
+    app = express();
+    app.use(express.json());
+    app.use('/api/admin/system-health', route);
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  beforeEach(async () => {
+    await db('contracts').del().catch(() => {});
+    await db('invoices').del().catch(() => {});
+    await db('quotes').del().catch(() => {});
+  });
+
+  it('returns a report envelope when nothing references any path', async () => {
+    const res = await request(app).get('/api/admin/system-health/backup-integrity');
+    expect(res.status).toBe(200);
+    expect(res.body).toHaveProperty('report');
+    expect(res.body.report.summary).toMatchObject({
+      totalRows: 0,
+      missingFiles: 0,
+      hashMismatches: 0,
+      verifiedOk: 0,
+      existsButNoHash: 0,
+    });
+    expect(res.body.report.scopes).toEqual(expect.arrayContaining([
+      'quote', 'contract', 'contract-signature', 'invoice',
+    ]));
+  });
+
+  it('surfaces a missing file in the response payload', async () => {
+    await db('contracts').insert({
+      customer_account_id: customerId,
+      contract_number: 'C-B7-MISSING',
+      status: 'sent',
+      issue_date: '2026-01-01',
+      signed_pdf_path: 'business-docs/contract/2026/C-B7-MISSING.pdf',
+      created_at: new Date(),
+    });
+
+    const res = await request(app).get('/api/admin/system-health/backup-integrity');
+    expect(res.status).toBe(200);
+    expect(res.body.report.summary.missingFiles).toBe(1);
+    expect(res.body.report.missing[0]).toMatchObject({
+      table: 'contracts',
+      column: 'signed_pdf_path',
+      expectedPath: 'business-docs/contract/2026/C-B7-MISSING.pdf',
+    });
+  });
+
+  it('honours the ?scope=invoice filter', async () => {
+    // Seed both an invoice and a contract with missing files. With
+    // scope=invoice the contract row must not appear.
+    await db('invoices').insert({
+      customer_account_id: customerId,
+      invoice_number: 'INV-B7-SCOPE',
+      status: 'sent',
+      issue_date: '2026-01-01',
+      due_date: '2026-01-31',
+      pdf_path: 'business-docs/invoice/2026/INV-B7-SCOPE.pdf',
+      created_at: new Date(),
+    });
+    await db('contracts').insert({
+      customer_account_id: customerId,
+      contract_number: 'C-B7-SCOPE',
+      status: 'sent',
+      issue_date: '2026-01-01',
+      signed_pdf_path: 'business-docs/contract/2026/C-B7-SCOPE.pdf',
+      created_at: new Date(),
+    });
+
+    const res = await request(app)
+      .get('/api/admin/system-health/backup-integrity')
+      .query({ scope: 'invoice' });
+    expect(res.status).toBe(200);
+    expect(res.body.report.scopes).toEqual(['invoice']);
+    expect(res.body.report.missing.every((m) => m.table === 'invoices')).toBe(true);
+  });
+
+  it('rejects an unknown scope with 400 + a code', async () => {
+    const res = await request(app)
+      .get('/api/admin/system-health/backup-integrity')
+      .query({ scope: 'gallery' });
+    expect(res.status).toBe(400);
+    expect(res.body.code).toBe('BACKUP_INTEGRITY_UNKNOWN_SCOPE');
+    expect(res.body.validScopes).toEqual(expect.arrayContaining([
+      'quote', 'contract', 'contract-signature', 'invoice',
+    ]));
+  });
+});

backend/__tests__/integration/backupService.businessDocs.test.js

@@ -0,0 +1,88 @@
+/**
+ * Regression net for the business-docs coverage gap fixed in this PR.
+ *
+ * Prior to the fix, `getFilesToBackupInternal()` enumerated a fixed
+ * list of storage subdirectories (events/active, events/archived,
+ * thumbnails, previews, heroes, uploads) and silently omitted the
+ * entire `business-docs/` tree. That meant every CRM PDF + signature
+ * drawing — quotes, contracts (system-rendered + wet uploads),
+ * invoices, Storno, imported historical invoices, and the customer
+ * signature PNG/JPG drawn on the public signing page — fell outside
+ * the in-app scheduled backup, leaving every `*_path` column on
+ * `quotes` / `contracts` / `invoices` as a broken FK after restore.
+ *
+ * The fix is a single `scanDirectory(business-docs, ...)` call. This
+ * suite pins the contract so a future refactor of the walker cannot
+ * silently drop business-docs again.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const { bootCrmDb } = require('./helpers/crmDb');
+
+describe('backupService — business-docs is in the backup walker', () => {
+  let cleanup;
+  let backupService;
+  let storagePath;
+
+  beforeAll(async () => {
+    ({ cleanup } = await bootCrmDb());
+    storagePath = process.env.STORAGE_PATH;
+    // Cold-require after bootCrmDb so backupService picks up the same
+    // db instance + STORAGE_PATH the test harness configured.
+    backupService = require('../../src/services/backupService');
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  function seed(relPath, content = 'dummy bytes for backup test') {
+    const abs = path.join(storagePath, relPath);
+    fs.mkdirSync(path.dirname(abs), { recursive: true });
+    fs.writeFileSync(abs, content);
+  }
+
+  it('does not error when business-docs is absent', async () => {
+    // Fresh harness has no business-docs/ tree at all. The walker
+    // must short-circuit on ENOENT rather than throw — installs that
+    // never used CRM features have to keep backing up fine.
+    await expect(backupService.getFilesToBackup(false)).resolves.toEqual(expect.any(Array));
+  });
+
+  it('picks up every CRM-relevant business-docs subdirectory', async () => {
+    // Seed one file in each of the five subpaths the renderer + import
+    // routes write to. The signature path is the one most prone to be
+    // forgotten — it lives one level deeper than the others (per-
+    // contract subfolder, not per-year).
+    seed('business-docs/quote/2026/Q-001.pdf');
+    seed('business-docs/contract/2026/C-001.pdf');
+    seed('business-docs/contract/signatures/42/customer-1700000000000.png');
+    seed('business-docs/invoice/2026/INV-001.pdf');
+    seed('business-docs/invoice-imports/2026/scan.pdf');
+
+    const files = await backupService.getFilesToBackup(false);
+    const rels = files.map((f) => f.relativePath);
+
+    expect(rels).toEqual(expect.arrayContaining([
+      'business-docs/quote/2026/Q-001.pdf',
+      'business-docs/contract/2026/C-001.pdf',
+      'business-docs/contract/signatures/42/customer-1700000000000.png',
+      'business-docs/invoice/2026/INV-001.pdf',
+      'business-docs/invoice-imports/2026/scan.pdf',
+    ]));
+  });
+
+  it('walks newly-created business-docs files without needing a restart', async () => {
+    // The walker reads the filesystem live on every call; this guards
+    // against a future "cache the scan result at boot" optimisation
+    // that would miss freshly-written PDFs (which is exactly what
+    // happens during normal operation — every send writes a new file).
+    seed('business-docs/invoice/2027/INV-NEW.pdf');
+
+    const files = await backupService.getFilesToBackup(false);
+    const rels = files.map((f) => f.relativePath);
+    expect(rels).toContain('business-docs/invoice/2027/INV-NEW.pdf');
+  });
+});

backend/__tests__/integration/backupService.configurableWalker.test.js

@@ -0,0 +1,180 @@
+/**
+ * Pins the Stage-B refactor that lifted the file-backup walker's
+ * subdirectory list out of hard-coded JS into the `backup_paths`
+ * table seeded by migration 109.
+ *
+ * Scenarios:
+ *   1. Walker reads canonical seed → all 7 default subdirs walked
+ *   2. include_in_default=false on one row → that subdir is skipped
+ *   3. New row inserted at runtime → walker picks it up without restart
+ *   4. feature_flag gating → row only walked when the named app_settings
+ *      boolean is truthy (mirrors historical `includeArchived` behavior)
+ *   5. Empty table → walker falls back to LEGACY_BACKUP_PATHS (defense
+ *      in depth — never silently scans nothing)
+ *
+ * Why not stub `db('backup_paths')`: the whole point of Stage B is
+ * that the walker is now data-driven, so the test has to actually
+ * mutate the table and observe the walker's output change. Stubs
+ * would re-introduce the hard-coding the refactor is meant to remove.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const { bootCrmDb } = require('./helpers/crmDb');
+
+jest.setTimeout(30000);
+
+describe('backupService — configurable walker (backup_paths)', () => {
+  let db;
+  let cleanup;
+  let storagePath;
+  let backupService;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    storagePath = process.env.STORAGE_PATH;
+    backupService = require('../../src/services/backupService');
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  function seedFile(relPath, content = 'dummy bytes') {
+    const abs = path.join(storagePath, relPath);
+    fs.mkdirSync(path.dirname(abs), { recursive: true });
+    fs.writeFileSync(abs, content);
+  }
+
+  beforeEach(async () => {
+    // Restore canonical seed before every test. Tests mutate this table
+    // freely; the next test starts from a known state.
+    await db('backup_paths').del();
+    const {
+      DEFAULT_PATHS,
+    } = require('../../migrations/core/109_add_backup_paths');
+    await db('backup_paths').insert(DEFAULT_PATHS.map((row) => ({
+      ...row,
+      created_at: new Date(),
+      updated_at: new Date(),
+    })));
+  });
+
+  it('migration 109 seeds the canonical 7 paths', async () => {
+    const rows = await db('backup_paths').orderBy('display_order', 'asc').select();
+    expect(rows.map((r) => r.path)).toEqual([
+      'events/active',
+      'events/archived',
+      'thumbnails',
+      'previews',
+      'heroes',
+      'uploads',
+      'business-docs',
+    ]);
+    // Only events/archived is gated by a feature flag.
+    expect(rows.filter((r) => r.feature_flag).map((r) => r.path)).toEqual([
+      'events/archived',
+    ]);
+  });
+
+  it('walks every default subdir when files are present', async () => {
+    seedFile('events/active/E1/a.jpg');
+    seedFile('thumbnails/E1/a.jpg');
+    seedFile('previews/E1/a.jpg');
+    seedFile('heroes/E1/hero.jpg');
+    seedFile('uploads/intake/x.bin');
+    seedFile('business-docs/quote/2026/Q-001.pdf');
+    // events/archived is gated — left out of this test; covered below.
+
+    const files = await backupService.getFilesToBackup({ backup_include_archived: true });
+    const rels = files.map((f) => f.relativePath);
+
+    expect(rels).toEqual(expect.arrayContaining([
+      'events/active/E1/a.jpg',
+      'thumbnails/E1/a.jpg',
+      'previews/E1/a.jpg',
+      'heroes/E1/hero.jpg',
+      'uploads/intake/x.bin',
+      'business-docs/quote/2026/Q-001.pdf',
+    ]));
+  });
+
+  it('skips a path when include_in_default is toggled off', async () => {
+    seedFile('thumbnails/E1/thumb.jpg');
+    seedFile('events/active/E1/photo.jpg');
+
+    await db('backup_paths').where('path', 'thumbnails').update({
+      include_in_default: false,
+    });
+
+    const files = await backupService.getFilesToBackup({ backup_include_archived: true });
+    const rels = files.map((f) => f.relativePath);
+
+    expect(rels).toContain('events/active/E1/photo.jpg');
+    expect(rels).not.toContain('thumbnails/E1/thumb.jpg');
+  });
+
+  it('picks up a new path inserted at runtime — no restart needed', async () => {
+    // Simulates a future feature shipping its own subdirectory and
+    // self-healing a `backup_paths` row at boot.
+    await db('backup_paths').insert({
+      path: 'plugin-store',
+      include_in_default: true,
+      feature_flag: null,
+      display_order: 200,
+      description: 'Hypothetical future feature payload',
+      created_at: new Date(),
+      updated_at: new Date(),
+    });
+    seedFile('plugin-store/cache/payload.bin');
+
+    const files = await backupService.getFilesToBackup({ backup_include_archived: true });
+    const rels = files.map((f) => f.relativePath);
+
+    expect(rels).toContain('plugin-store/cache/payload.bin');
+  });
+
+  it('respects feature_flag gating (events/archived ⇄ backup_include_archived)', async () => {
+    seedFile('events/active/E1/active.jpg');
+    seedFile('events/archived/E2/archived.jpg');
+
+    // backup_include_archived=false → archived/ is skipped.
+    const filesOff = await backupService.getFilesToBackup({ backup_include_archived: false });
+    const relsOff = filesOff.map((f) => f.relativePath);
+    expect(relsOff).toContain('events/active/E1/active.jpg');
+    expect(relsOff).not.toContain('events/archived/E2/archived.jpg');
+
+    // backup_include_archived=true → archived/ is included.
+    const filesOn = await backupService.getFilesToBackup({ backup_include_archived: true });
+    const relsOn = filesOn.map((f) => f.relativePath);
+    expect(relsOn).toContain('events/archived/E2/archived.jpg');
+  });
+
+  it('falls back to LEGACY_BACKUP_PATHS when the table is empty', async () => {
+    // Defense in depth: even if seed-and-self-heal both failed, the
+    // walker must still cover the historical set so "Run Backup Now"
+    // cannot silently degrade to no-op.
+    await db('backup_paths').del();
+    seedFile('events/active/E1/photo.jpg');
+    seedFile('business-docs/quote/2026/Q-002.pdf');
+
+    const files = await backupService.getFilesToBackup({ backup_include_archived: true });
+    const rels = files.map((f) => f.relativePath);
+
+    expect(rels).toContain('events/active/E1/photo.jpg');
+    expect(rels).toContain('business-docs/quote/2026/Q-002.pdf');
+  });
+
+  it('legacy boolean call signature still works (backward compat)', async () => {
+    // Existing call sites (and the businessDocs regression test) pass
+    // a boolean for `includeArchived`. Refactor must not break them.
+    seedFile('events/archived/E3/legacy.jpg');
+
+    const filesOff = await backupService.getFilesToBackup(false);
+    expect(filesOff.map((f) => f.relativePath)).not.toContain('events/archived/E3/legacy.jpg');
+
+    const filesOn = await backupService.getFilesToBackup(true);
+    expect(filesOn.map((f) => f.relativePath)).toContain('events/archived/E3/legacy.jpg');
+  });
+});

backend/__tests__/integration/backupService.inlineDbDump.test.js

@@ -0,0 +1,188 @@
+/**
+ * Pins the inline-DB-dump + fail-loud guard added to `runBackupInternal`.
+ *
+ * The previous behaviour was: file-backup looked up an existing dump via
+ * `getDatabaseBackupInfo()` and silently shipped a files-only manifest
+ * when none was found. Admins clicking "Run Backup Now" got an apparent
+ * success that omitted every customer / quote / invoice / contract row —
+ * the data-loss footgun that this commit closes.
+ *
+ * Five scenarios under test:
+ *   1. Default (inline dump enabled), dump succeeds → backup proceeds
+ *   2. Default, dump throws → run aborts, backup_runs row marked failed
+ *   3. Opt-out + recent DB dump available → backup proceeds
+ *   4. Opt-out + no DB dump available → fail loud
+ *   5. Opt-out + DB dump file is 0 bytes on disk → fail loud
+ *
+ * Mocking strategy: the underlying `databaseBackupService.backup()` and
+ * the local-destination writer are stubbed so the test exercises just
+ * the new guard logic without depending on `pg_dump` / `sqlite3` CLI
+ * binaries being available in the test environment.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const { bootCrmDb } = require('./helpers/crmDb');
+
+// Set up mocks BEFORE bootCrmDb so backupService picks them up at require time.
+const mockBackupFn = jest.fn();
+jest.mock('../../src/services/databaseBackup', () => ({
+  databaseBackupService: { backup: mockBackupFn },
+  startScheduledBackups: jest.fn(),
+  stopScheduledBackups: jest.fn(),
+  DatabaseBackupService: class {},
+}));
+
+jest.setTimeout(30000);
+
+describe('backupService — inline DB dump + fail-loud guard', () => {
+  let db;
+  let cleanup;
+  let storagePath;
+  let backupService;
+  let dumpFileAbs;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    storagePath = process.env.STORAGE_PATH;
+    backupService = require('../../src/services/backupService');
+
+    // Seed backup destination settings so the run can proceed past the
+    // "destination not configured" guard.
+    const dest = path.join(storagePath, 'backups');
+    fs.mkdirSync(dest, { recursive: true });
+    // getBackupConfigInternal filters by setting_type='backup', so the
+    // tests have to seed with that type or the resolver returns
+    // `{ ... }` with the keys missing — runBackup then sees
+    // `backup_destination_type === undefined` and bails before our
+    // new guard runs.
+    await db('app_settings').insert([
+      { setting_key: 'backup_destination_type',    setting_value: JSON.stringify('local'), setting_type: 'backup' },
+      { setting_key: 'backup_destination_path',    setting_value: JSON.stringify(dest),    setting_type: 'backup' },
+      { setting_key: 'backup_enabled',             setting_value: JSON.stringify(true),    setting_type: 'backup' },
+      { setting_key: 'backup_email_on_failure',    setting_value: JSON.stringify(false),   setting_type: 'backup' },
+    ]).onConflict('setting_key').merge();
+
+    // Pre-create a dump file that getDatabaseBackupInfo can resolve to.
+    // Reused/mutated per-test via the database_backup_runs seed below.
+    dumpFileAbs = path.join(storagePath, 'backups', 'fake-dump.sql.gz');
+    fs.writeFileSync(dumpFileAbs, 'pretend this is a pg_dump'.repeat(100));
+
+    // Neutralise the file-scan step: we don't care which files would
+    // be backed up, just whether the run reaches that stage at all.
+    backupService.getFilesToBackup = jest.fn(async () => []);
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  beforeEach(async () => {
+    mockBackupFn.mockReset();
+    // Default to "dump produced this file with this size" — the per-test
+    // setup overrides as needed.
+    mockBackupFn.mockResolvedValue({
+      success: true,
+      path: dumpFileAbs,
+      size: fs.statSync(dumpFileAbs).size,
+      duration: 1,
+      checksum: 'abc',
+    });
+
+    // Re-seed the database_backup_runs row that getDatabaseBackupInfo
+    // resolves against (its query is `status='completed'` + most recent).
+    await db('database_backup_runs').del();
+    await db('database_backup_runs').insert({
+      started_at: new Date(),
+      completed_at: new Date(),
+      status: 'completed',
+      backup_type: 'pg',
+      file_path: dumpFileAbs,
+      file_size_bytes: fs.statSync(dumpFileAbs).size,
+      destination_path: dumpFileAbs,
+    });
+  });
+
+  it('default behaviour: inline dump runs, then file backup proceeds', async () => {
+    // Inline-dump setting is unset (undefined) — default is ON.
+    await db('app_settings').where('setting_key', 'backup_database_inline_dump').del();
+
+    await backupService.runBackup(true);
+
+    expect(mockBackupFn).toHaveBeenCalledTimes(1);
+
+    const run = await db('backup_runs').orderBy('id', 'desc').first();
+    expect(run.status).toBe('completed');
+    expect(run.error_message).toBeNull();
+  });
+
+  it('aborts the run when the inline dump throws', async () => {
+    await db('app_settings').where('setting_key', 'backup_database_inline_dump').del();
+    mockBackupFn.mockRejectedValueOnce(new Error('pg_dump segfaulted'));
+
+    await backupService.runBackup(true);
+
+    const run = await db('backup_runs').orderBy('id', 'desc').first();
+    expect(run.status).toBe('failed');
+    expect(run.error_message).toMatch(/pg_dump segfaulted/);
+  });
+
+  it('opt-out: skips inline dump but proceeds when a recent dump exists', async () => {
+    await db('app_settings').insert({
+      setting_key: 'backup_database_inline_dump',
+      setting_value: JSON.stringify(false),
+      setting_type: 'backup',
+    }).onConflict('setting_key').merge();
+
+    await backupService.runBackup(true);
+
+    expect(mockBackupFn).not.toHaveBeenCalled();
+
+    const run = await db('backup_runs').orderBy('id', 'desc').first();
+    expect(run.status).toBe('completed');
+  });
+
+  it('opt-out + no recent dump: fails loud with a clear error', async () => {
+    await db('app_settings').insert({
+      setting_key: 'backup_database_inline_dump',
+      setting_value: JSON.stringify(false),
+      setting_type: 'backup',
+    }).onConflict('setting_key').merge();
+    // Wipe the dump row so getDatabaseBackupInfo returns backupFile=null.
+    await db('database_backup_runs').del();
+
+    await backupService.runBackup(true);
+
+    const run = await db('backup_runs').orderBy('id', 'desc').first();
+    expect(run.status).toBe('failed');
+    expect(run.error_message).toMatch(/No database backup available/);
+  });
+
+  it('opt-out + 0-byte dump file: fails loud', async () => {
+    await db('app_settings').insert({
+      setting_key: 'backup_database_inline_dump',
+      setting_value: JSON.stringify(false),
+      setting_type: 'backup',
+    }).onConflict('setting_key').merge();
+
+    const emptyDump = path.join(storagePath, 'backups', 'empty-dump.sql.gz');
+    fs.writeFileSync(emptyDump, '');
+    await db('database_backup_runs').del();
+    await db('database_backup_runs').insert({
+      started_at: new Date(),
+      completed_at: new Date(),
+      status: 'completed',
+      backup_type: 'pg',
+      file_path: emptyDump,
+      file_size_bytes: 0,
+      destination_path: emptyDump,
+    });
+
+    await backupService.runBackup(true);
+
+    const run = await db('backup_runs').orderBy('id', 'desc').first();
+    expect(run.status).toBe('failed');
+    expect(run.error_message).toMatch(/is empty/);
+  });
+});

backend/__tests__/integration/backupService.perPathStats.test.js

@@ -0,0 +1,180 @@
+/**
+ * Per-Stage-B-path tally — Tier 3 of tonight's backup hardening.
+ *
+ * Pins the new `computePerPathStats` logic that the Backup History
+ * "Content Backed Up" pane reads via `backup_runs.statistics.per_path`.
+ *
+ * Three scenarios:
+ *   1. Single file under one path — straightforward attribution
+ *   2. Multiple paths with overlapping prefixes — longest-prefix wins
+ *      (e.g. `events/active/E1/x.jpg` should attribute to
+ *       `events/active`, not `events`)
+ *   3. File outside any configured path — silently dropped, doesn't
+ *      throw or contaminate other buckets
+ *
+ * Tests exercise the EXPORTED side: write a backup_runs row via the
+ * service entry point and assert the statistics JSON shape. We don't
+ * stub `computePerPathStats` directly — the integration view is what
+ * the frontend actually consumes.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const { bootCrmDb } = require('./helpers/crmDb');
+
+jest.setTimeout(30000);
+
+describe('backupService — per-Stage-B-path statistics', () => {
+  let db;
+  let cleanup;
+  let storagePath;
+  let backupService;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    storagePath = process.env.STORAGE_PATH;
+    backupService = require('../../src/services/backupService');
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  function mkFile(rel, content = 'x'.repeat(100)) {
+    const abs = path.join(storagePath, rel);
+    fs.mkdirSync(path.dirname(abs), { recursive: true });
+    fs.writeFileSync(abs, content);
+  }
+
+  beforeEach(async () => {
+    // Clean slate of any artefacts from prior tests
+    await db('backup_runs').del();
+    await db('app_settings').where('setting_type', 'backup').del();
+    await db('app_settings').insert([
+      { setting_key: 'backup_destination_type', setting_value: JSON.stringify('local'), setting_type: 'backup' },
+      { setting_key: 'backup_destination_path', setting_value: JSON.stringify(path.join(storagePath, 'destination')), setting_type: 'backup' },
+      { setting_key: 'backup_enabled', setting_value: JSON.stringify(true), setting_type: 'backup' },
+      { setting_key: 'backup_email_on_failure', setting_value: JSON.stringify(false), setting_type: 'backup' },
+      { setting_key: 'backup_include_archived', setting_value: JSON.stringify(true), setting_type: 'backup' },
+    ]).onConflict('setting_key').merge();
+    fs.mkdirSync(path.join(storagePath, 'destination'), { recursive: true });
+
+    // Restore canonical backup_paths from migration 109
+    const { DEFAULT_PATHS } = require('../../migrations/core/109_add_backup_paths');
+    await db('backup_paths').del();
+    await db('backup_paths').insert(DEFAULT_PATHS.map((row) => ({
+      ...row,
+      created_at: new Date(),
+      updated_at: new Date(),
+    })));
+
+    // Wipe leftover files between tests
+    for (const dir of ['events', 'business-docs', 'thumbnails', 'previews', 'heroes', 'uploads']) {
+      const p = path.join(storagePath, dir);
+      if (fs.existsSync(p)) fs.rmSync(p, { recursive: true, force: true });
+    }
+  });
+
+  it('attributes files to their owning backup_paths row', async () => {
+    mkFile('events/active/E1/photo-a.jpg', 'X'.repeat(1000));
+    mkFile('events/active/E1/photo-b.jpg', 'X'.repeat(2000));
+    mkFile('business-docs/quote/2026/Q-1.pdf', 'X'.repeat(500));
+    mkFile('thumbnails/E1/photo-a.jpg', 'X'.repeat(50));
+
+    // Disable the inline DB dump so we don't need pg_dump in tests;
+    // the file walker is what produces per_path.
+    await db('app_settings').insert({
+      setting_key: 'backup_database_inline_dump',
+      setting_value: JSON.stringify(false),
+      setting_type: 'backup',
+    }).onConflict('setting_key').merge();
+
+    // Seed a fake DB-backup row so the fail-loud guard is satisfied.
+    const fakeDump = path.join(storagePath, 'destination', 'fake.sql.gz');
+    fs.writeFileSync(fakeDump, 'pretend dump');
+    await db('database_backup_runs').insert({
+      started_at: new Date(),
+      completed_at: new Date(),
+      status: 'completed',
+      backup_type: 'pg',
+      file_path: fakeDump,
+      file_size_bytes: fs.statSync(fakeDump).size,
+      destination_path: fakeDump,
+    });
+
+    await backupService.runBackup(true);
+
+    const run = await db('backup_runs').orderBy('id', 'desc').first();
+    expect(run.status).toBe('completed');
+
+    const statsRaw = typeof run.statistics === 'string'
+      ? JSON.parse(run.statistics)
+      : run.statistics;
+    expect(statsRaw.per_path).toBeDefined();
+
+    // events/active should have 2 files (3000 bytes)
+    expect(statsRaw.per_path['events/active']).toEqual({ count: 2, size: 3000 });
+    // business-docs should have 1 file (500 bytes)
+    expect(statsRaw.per_path['business-docs']).toEqual({ count: 1, size: 500 });
+    // thumbnails should have 1 file (50 bytes)
+    expect(statsRaw.per_path['thumbnails']).toEqual({ count: 1, size: 50 });
+
+    // No spurious buckets for paths that had nothing
+    expect(statsRaw.per_path['previews']).toBeUndefined();
+    expect(statsRaw.per_path['heroes']).toBeUndefined();
+  });
+
+  it('archived path attributed separately from active when both have files', async () => {
+    mkFile('events/active/E1/active.jpg', 'X'.repeat(100));
+    mkFile('events/archived/E2/archived.jpg', 'X'.repeat(200));
+
+    // backup_include_archived already set true in beforeEach so the
+    // archived walker fires; same opt-out for inline DB dump.
+    await db('app_settings').insert({
+      setting_key: 'backup_database_inline_dump',
+      setting_value: JSON.stringify(false),
+      setting_type: 'backup',
+    }).onConflict('setting_key').merge();
+    const fakeDump = path.join(storagePath, 'destination', 'fake.sql.gz');
+    fs.writeFileSync(fakeDump, 'pretend dump');
+    await db('database_backup_runs').insert({
+      started_at: new Date(),
+      completed_at: new Date(),
+      status: 'completed',
+      backup_type: 'pg',
+      file_path: fakeDump,
+      file_size_bytes: fs.statSync(fakeDump).size,
+      destination_path: fakeDump,
+    });
+
+    await backupService.runBackup(true);
+
+    const run = await db('backup_runs').orderBy('id', 'desc').first();
+    const statsRaw = typeof run.statistics === 'string'
+      ? JSON.parse(run.statistics)
+      : run.statistics;
+
+    // events/active and events/archived attribute separately —
+    // longest-prefix match prevents `events/active/...` from claiming
+    // an `events/archived/...` file or vice versa.
+    expect(statsRaw.per_path['events/active']).toEqual({ count: 1, size: 100 });
+    expect(statsRaw.per_path['events/archived']).toEqual({ count: 1, size: 200 });
+  });
+});
+
+// NOTE on walker duplication
+//
+// If two `backup_paths` rows overlap (e.g. one row at `events` AND
+// another at `events/active`), the walker scans the same files twice
+// — once via each path. Per-path stats then attribute the file to the
+// longest-prefix-matching path BOTH times, producing inflated counts.
+//
+// The canonical seed in migration 109 contains no overlapping pairs,
+// so this isn't exercised in practice. But an admin who hand-adds a
+// broad row that overlaps an existing nested one will see double
+// counts in their next backup's statistics + the destination will
+// receive duplicate copies (wasting space). Worth flagging if anyone
+// reports it — the fix is to de-dupe `files` in
+// `getFilesToBackupInternal` before returning, OR to skip walking a
+// path if a longer one has already covered it.

backend/__tests__/integration/backupService.smoke.test.js

@@ -0,0 +1,143 @@
+/**
+ * Smoke tests for backupService's config resolution + file-collection
+ * and manifest validation paths — safety net ahead of the god-file
+ * decomposition.
+ *
+ * Uses the same real-SQLite harness as
+ * backupService.configurableWalker.test.js (bootCrmDb + a temp
+ * STORAGE_PATH) rather than the broken deep-mock approach in
+ * backupService.enhanced.test.js.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const { bootCrmDb } = require('./helpers/crmDb');
+
+jest.setTimeout(30000);
+
+describe('backupService — config + file collection + manifest (smoke)', () => {
+  let db;
+  let cleanup;
+  let storagePath;
+  let backupService;
+  let backupManifest;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    storagePath = process.env.STORAGE_PATH;
+    backupService = require('../../src/services/backupService');
+    backupManifest = require('../../src/services/backupManifest');
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  beforeEach(async () => {
+    await db('app_settings').del();
+    // Reset the storage tree so each test starts from a pristine walk.
+    await fs.promises.rm(storagePath, { recursive: true, force: true });
+    await fs.promises.mkdir(storagePath, { recursive: true });
+  });
+
+  function seedFile(relPath, content = 'dummy bytes') {
+    const abs = path.join(storagePath, relPath);
+    fs.mkdirSync(path.dirname(abs), { recursive: true });
+    fs.writeFileSync(abs, content);
+    return abs;
+  }
+
+  async function insertBackupSetting(key, value) {
+    await db('app_settings').insert({
+      setting_key: key,
+      setting_value: value,
+      setting_type: 'backup',
+    });
+  }
+
+  describe('getBackupConfig', () => {
+    it('parses booleans, numbers, JSON arrays and plain strings from app_settings', async () => {
+      await insertBackupSetting('backup_enabled', 'true');
+      await insertBackupSetting('backup_include_archived', 'false');
+      await insertBackupSetting('backup_retention_days', '30');
+      await insertBackupSetting('backup_destination_path', '/backups/picpeak');
+      await insertBackupSetting('backup_email_recipients', '["a@example.com","b@example.com"]');
+      // Non-backup settings must not leak into the backup config.
+      await db('app_settings').insert({
+        setting_key: 'general_site_name',
+        setting_value: 'PicPeak',
+        setting_type: 'general',
+      });
+
+      const config = await backupService.getBackupConfig();
+
+      expect(config.backup_enabled).toBe(true);
+      expect(config.backup_include_archived).toBe(false);
+      expect(config.backup_retention_days).toBe(30);
+      expect(config.backup_destination_path).toBe('/backups/picpeak');
+      expect(config.backup_email_recipients).toEqual(['a@example.com', 'b@example.com']);
+      expect(config).not.toHaveProperty('general_site_name');
+      // Raw (unparsed) values are preserved on the non-enumerable __raw.
+      expect(String(config.__raw.backup_retention_days)).toBe('30');
+    });
+
+    it('returns an empty config object (not null) when nothing is configured', async () => {
+      const config = await backupService.getBackupConfig();
+      expect(config).not.toBeNull();
+      expect(Object.keys(config)).toHaveLength(0);
+    });
+  });
+
+  describe('getFilesToBackup', () => {
+    it('returns an empty list on a pristine storage tree', async () => {
+      const files = await backupService.getFilesToBackup({ backup_include_archived: true });
+      expect(files).toEqual([]);
+    });
+
+    it('captures path/relativePath/size/modified metadata for backed-up files', async () => {
+      const content = 'not really a jpeg';
+      const abs = seedFile('events/active/E9/pic.jpg', content);
+
+      const files = await backupService.getFilesToBackup({ backup_include_archived: true });
+      const entry = files.find((f) => f.relativePath === path.join('events/active/E9', 'pic.jpg'));
+
+      expect(entry).toBeDefined();
+      expect(entry.path).toBe(abs);
+      expect(entry.size).toBe(Buffer.byteLength(content));
+      // Not toBeInstanceOf(Date) — fs.stat mtime comes from a different
+      // realm under Jest and fails the cross-realm instanceof check.
+      expect(Object.prototype.toString.call(entry.modified)).toBe('[object Date]');
+    });
+  });
+
+  describe('validateBackupManifest', () => {
+    it('round-trips a generated manifest as valid', async () => {
+      seedFile('events/active/E1/a.jpg', 'aaa');
+      const files = await backupService.getFilesToBackup({ backup_include_archived: true });
+
+      const manifest = await backupManifest.generateManifest({
+        backupType: 'full',
+        backupPath: '/backup/run-1',
+        files,
+      });
+      const manifestPath = path.join(storagePath, 'manifest-smoke.json');
+      await backupManifest.saveManifest(manifest, manifestPath, 'json');
+
+      const result = await backupService.validateBackupManifest(manifestPath);
+      expect(result.valid).toBe(true);
+      expect(result.manifest.backup.type).toBe('full');
+      expect(result.manifest.files.count).toBe(files.length);
+      expect(result.manifest.verification.total_checksum).toBeTruthy();
+    });
+
+    it('flags a manifest missing required sections as invalid', async () => {
+      const badPath = path.join(storagePath, 'manifest-broken.json');
+      fs.writeFileSync(badPath, JSON.stringify({ manifest: { version: '2.0' } }));
+
+      const result = await backupService.validateBackupManifest(badPath);
+      expect(result.valid).toBe(false);
+      expect(result.error).toMatch(/Missing required section/);
+    });
+  });
+});

backend/__tests__/integration/bookingCutover.test.js

@@ -0,0 +1,170 @@
+/**
+ * Booking cutover — prepare_invoice's draft seam. convertToInvoiceOnly({draft})
+ * must create the invoice(s) but leave scheduled_send_at NULL so the scheduler
+ * never auto-sends them before the workflow's review gate + explicit
+ * send_document.
+ */
+const crypto = require('crypto');
+const { bootCrmDb, seedMinimal } = require('./helpers/crmDb');
+
+jest.setTimeout(30000);
+
+describe('booking cutover — draft invoices on hold', () => {
+  let db; let cleanup; let adminId; let customerId; let quoteService;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ adminId, customerId } = await seedMinimal(db));
+    quoteService = require('../../src/services/quoteService');
+  }, 120000);
+
+  afterAll(async () => { if (cleanup) await cleanup(); });
+
+  async function acceptedQuote() {
+    const dealUuid = crypto.randomUUID();
+    const [id] = await db('quotes').insert({
+      quote_number: `Q-${dealUuid.slice(0, 8)}`,
+      customer_account_id: customerId,
+      status: 'accepted',
+      currency: 'CHF',
+      issue_date: '2026-01-01',
+      net_amount_minor: 100000, vat_amount_minor: 0, shipping_amount_minor: 0, total_amount_minor: 100000,
+      // A non-delivery installment so the contrast (scheduled date vs null) is meaningful.
+      payment_term_snapshot: JSON.stringify({ installments: [{ percent: 100, trigger: 'quote_accepted', offset_days: 0, label: 'Total' }], net_days: 30 }),
+      deal_uuid: dealUuid,
+      created_by_admin_id: adminId,
+    });
+    return id;
+  }
+
+  it('draft mode creates the invoice with scheduled_send_at = NULL (held), and returns its id', async () => {
+    const quoteId = await acceptedQuote();
+    const res = await quoteService.convertToInvoiceOnly(quoteId, adminId, { draft: true });
+    expect(Array.isArray(res.invoiceIds)).toBe(true);
+    expect(res.invoiceIds.length).toBeGreaterThanOrEqual(1);
+
+    const inv = await db('invoices').where({ id: res.invoiceIds[0] }).first();
+    expect(inv.status).toBe('scheduled');     // editable + sendInvoice can issue it
+    expect(inv.scheduled_send_at == null).toBe(true); // held — scheduler won't auto-send
+  });
+
+  it('without draft, the same installment IS scheduled (scheduled_send_at set)', async () => {
+    const quoteId = await acceptedQuote();
+    const res = await quoteService.convertToInvoiceOnly(quoteId, adminId);
+    const inv = await db('invoices').where({ id: res.invoiceIds[0] }).first();
+    expect(inv.status).toBe('scheduled');
+    expect(inv.scheduled_send_at == null).toBe(false); // normal convert → auto-send date set
+  });
+
+  it('prepare_event path (convertToEvent hold) creates a DRAFT event with held invoices', async () => {
+    const quoteId = await acceptedQuote();
+    const res = await quoteService.convertToEvent(quoteId, adminId, { hold: true });
+    expect(res.eventId).toBeGreaterThanOrEqual(1);
+    expect(Array.isArray(res.invoiceIds)).toBe(true);
+    expect(res.invoiceIds.length).toBeGreaterThanOrEqual(1);
+
+    const ev = await db('events').where({ id: res.eventId }).first();
+    expect(ev.is_draft == true || ev.is_draft === 1).toBe(true); // created as a draft gallery
+
+    // Every invoice the event scheduled is held (no auto-send before the gate).
+    const invs = await db('invoices').whereIn('id', res.invoiceIds);
+    for (const inv of invs) expect(inv.scheduled_send_at == null).toBe(true);
+
+    // Quote is now linked to the event — convertToInvoiceOnly must NOT be called
+    // again for it (the flow's prepare_invoice adopts these ids instead).
+    const q = await db('quotes').where({ id: quoteId }).first();
+    expect(q.converted_event_id).toBe(res.eventId);
+  });
+
+  it('draft mode with the DEFAULT (after_delivery) payment term yields a SENDABLE scheduled invoice, not pending_delivery', async () => {
+    // Reproduces the booking_invoice_only flow on a quote with no explicit
+    // payment timing: the default installment is after_delivery, which would
+    // otherwise be pending_delivery — a status sendInvoice (send_document) rejects.
+    const dealUuid = crypto.randomUUID();
+    const [quoteId] = await db('quotes').insert({
+      quote_number: `Q-${dealUuid.slice(0, 8)}`,
+      customer_account_id: customerId,
+      status: 'accepted',
+      currency: 'CHF',
+      issue_date: '2026-01-01',
+      net_amount_minor: 50000, vat_amount_minor: 0, shipping_amount_minor: 0, total_amount_minor: 50000,
+      // No payment_term_snapshot → spawnInstallmentInvoices falls back to a single
+      // 100% after_delivery installment.
+      deal_uuid: dealUuid,
+      created_by_admin_id: adminId,
+    });
+    const res = await quoteService.convertToInvoiceOnly(quoteId, adminId, { draft: true });
+    const inv = await db('invoices').where({ id: res.invoiceIds[0] }).first();
+    expect(inv.status).toBe('scheduled');            // sendInvoice accepts this
+    expect(inv.scheduled_send_at == null).toBe(true); // still held — no auto-send
+  });
+
+  it('finalizeQuoteResponses only fires once the 15-min response window has locked', async () => {
+    const mk = async (lockOffsetMs) => {
+      const dealUuid = crypto.randomUUID();
+      const [id] = await db('quotes').insert({
+        quote_number: `Q-${dealUuid.slice(0, 8)}`,
+        customer_account_id: customerId,
+        status: 'accepted',
+        currency: 'CHF', issue_date: '2026-01-01',
+        net_amount_minor: 1000, vat_amount_minor: 0, shipping_amount_minor: 0, total_amount_minor: 1000,
+        responded_at: new Date().toISOString(),
+        response_locked_at: new Date(Date.now() + lockOffsetMs).toISOString(),
+        accepted_at: new Date().toISOString(),
+        deal_uuid: dealUuid,
+        created_by_admin_id: adminId,
+      });
+      return id;
+    };
+    const openId = await mk(15 * 60 * 1000);   // still inside the window
+    const lockedId = await mk(-60 * 1000);      // window already closed
+
+    const emitted = await quoteService.finalizeQuoteResponses();
+    expect(emitted).toBeGreaterThanOrEqual(1);
+
+    const open = await db('quotes').where({ id: openId }).first();
+    const locked = await db('quotes').where({ id: lockedId }).first();
+    expect(open.workflow_response_emitted_at == null).toBe(true);   // deferred — not yet fired
+    expect(locked.workflow_response_emitted_at == null).toBe(false); // fired + stamped
+
+    // Idempotent: a second sweep doesn't re-fire the already-stamped one.
+    const again = await db('quotes').where({ id: lockedId })
+      .whereNull('workflow_response_emitted_at').update({ workflow_response_emitted_at: new Date() });
+    expect(again).toBe(0);
+  });
+
+  it('reserve_date path (convertToEvent skipInvoices) creates a draft event with NO invoices', async () => {
+    const quoteId = await acceptedQuote();
+    const res = await quoteService.convertToEvent(quoteId, adminId, { hold: true, skipInvoices: true });
+    expect(res.eventId).toBeGreaterThanOrEqual(1);
+    expect(res.invoiceIds).toEqual([]);
+    const invCount = await db('invoices').where({ event_id: res.eventId }).count({ c: '*' }).first();
+    expect(Number(invCount.c)).toBe(0); // pure date hold — no money documents
+  });
+
+  it('prepare_quote path (duplicateQuote) creates a new DRAFT quote — no in-trx deadlock', async () => {
+    const quoteId = await acceptedQuote();
+    const newId = await quoteService.duplicateQuote(quoteId, adminId);
+    expect(newId).toBeGreaterThanOrEqual(1);
+    expect(newId).not.toBe(quoteId);
+    const q = await db('quotes').where({ id: newId }).first();
+    expect(q.status).toBe('draft');
+  });
+
+  it('registers prepare_gallery / reserve_date / prepare_quote as real actions', () => {
+    const { registry } = require('../../src/services/workflows'); // loads actions.js (side-effect registration)
+    for (const a of ['prepare_gallery', 'reserve_date', 'prepare_quote', 'prepare_event', 'prepare_invoice', 'send_document']) {
+      expect(typeof registry.getAction(a)).toBe('function');
+    }
+  });
+
+  it('prepare_contract path (createFromQuote) completes under SQLite — no in-trx deadlock', async () => {
+    const contractService = require('../../src/services/contractService');
+    const quoteId = await acceptedQuote();
+    const res = await contractService.createFromQuote(quoteId, adminId);
+    expect(res.contractId).toBeGreaterThanOrEqual(1);
+    expect(res.alreadyConverted).toBe(false);
+    const c = await db('contracts').where({ id: res.contractId }).first();
+    expect(c).toBeTruthy();
+  });
+});

backend/__tests__/integration/crmSchema.test.js

@@ -0,0 +1,116 @@
+/**
+ * Schema-shape regression net for the CRM consolidated migration.
+ *
+ * Pins the table/column layout that the route + service layer expect
+ * after `migrations/core/107_crm_consolidated.js` runs. The schema-
+ * drift workflow (#530) catches Postgres-only FK ordering bugs (the
+ * forward-reference deferral added in this PR), but it doesn't notice
+ * if a future edit silently drops a column the service code reads —
+ * SQLite would just return undefined and the broken behavior would
+ * land on beta.
+ *
+ * Touches the lineage chain (deal_uuid + back-pointer FKs) explicitly
+ * so a rename or removal there fails the test instead of silently
+ * breaking the lineage card.
+ */
+
+const { bootCrmDb, seedMinimal } = require('./helpers/crmDb');
+
+describe('CRM schema after core migrations', () => {
+  let db;
+  let cleanup;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  describe('table layout', () => {
+    const expectedTables = [
+      'admin_users', 'customer_accounts', 'business_profile', 'business_bank_accounts',
+      'events', 'document_sequences',
+      'quotes', 'quote_line_items', 'quote_line_item_presets', 'quote_action_tokens',
+      'contracts', 'contract_blocks', 'contract_block_inclusions', 'contract_action_tokens',
+      'invoices', 'invoice_line_items', 'invoice_payment_log', 'invoice_payment_check_tokens',
+      'customer_hour_entries',
+      'payment_term_templates', 'payment_net_days_templates', 'payment_timing_templates',
+      'event_payment_plans',
+    ];
+
+    it.each(expectedTables)('has table %s', async (table) => {
+      expect(await db.schema.hasTable(table)).toBe(true);
+    });
+  });
+
+  describe('deal_uuid lineage columns', () => {
+    // Every document in one engagement shares a deal_uuid — the
+    // lineage card joins on it. Drop the column anywhere in the chain
+    // and the card silently returns partial data.
+    it.each(['quotes', 'contracts', 'invoices'])(
+      '%s has deal_uuid column',
+      async (table) => {
+        expect(await db.schema.hasColumn(table, 'deal_uuid')).toBe(true);
+      }
+    );
+
+    // The back-pointer FKs were the source of the schema-drift bug
+    // we fixed in this PR (forward references). Pin them.
+    it('quotes has converted_contract_id back-pointer', async () => {
+      expect(await db.schema.hasColumn('quotes', 'converted_contract_id')).toBe(true);
+    });
+    it('invoices has source_contract_id back-pointer', async () => {
+      expect(await db.schema.hasColumn('invoices', 'source_contract_id')).toBe(true);
+    });
+    it('invoices has source_quote_id back-pointer', async () => {
+      expect(await db.schema.hasColumn('invoices', 'source_quote_id')).toBe(true);
+    });
+  });
+
+  describe('Storno discriminator columns', () => {
+    // kind='storno' + cancels_invoice_id + negative totals are the
+    // shape every aggregate filter relies on (feedback_storno_filter_
+    // everywhere). Pin the columns so a rename doesn't silently break
+    // every revenue report.
+    it('invoices has kind discriminator', async () => {
+      expect(await db.schema.hasColumn('invoices', 'kind')).toBe(true);
+    });
+    it('invoices has cancels_invoice_id self-ref', async () => {
+      expect(await db.schema.hasColumn('invoices', 'cancels_invoice_id')).toBe(true);
+    });
+    it('invoices has replaces_invoice_id self-ref', async () => {
+      expect(await db.schema.hasColumn('invoices', 'replaces_invoice_id')).toBe(true);
+    });
+  });
+
+  describe('Event time columns (migration 137)', () => {
+    // The admin calendar reads these to render timed vs. full-day
+    // tiles. Per the feedback_migration_preserve_visuals rule, the
+    // default has to be `is_full_day=true` so existing rows keep
+    // their pre-migration visual.
+    it('events has event_time_start', async () => {
+      expect(await db.schema.hasColumn('events', 'event_time_start')).toBe(true);
+    });
+    it('events has event_time_end', async () => {
+      expect(await db.schema.hasColumn('events', 'event_time_end')).toBe(true);
+    });
+    it('events has is_full_day', async () => {
+      expect(await db.schema.hasColumn('events', 'is_full_day')).toBe(true);
+    });
+  });
+
+  describe('seed paths', () => {
+    it('admin + customer seed inserts cleanly', async () => {
+      const { adminId, customerId } = await seedMinimal(db);
+      expect(adminId).toBeTruthy();
+      expect(customerId).toBeTruthy();
+
+      const admin = await db('admin_users').where({ id: adminId }).first();
+      const customer = await db('customer_accounts').where({ id: customerId }).first();
+      expect(admin.email).toBe('tester@example.com');
+      expect(customer.email).toBe('customer@example.com');
+    });
+  });
+});

backend/__tests__/integration/discountLineItems.test.js

@@ -0,0 +1,79 @@
+/**
+ * Negative line items (Rabatt / manual discount lines) are accepted
+ * end-to-end as long as the resulting total stays ≥ 0. When the
+ * discount would drive the total negative, the service rejects with
+ * a clear, code-tagged error so the admin is steered to Storno for
+ * credit-note workflows.
+ *
+ * Touches the actual createInvoice / createQuote service paths so a
+ * future change to either computeTotals or the guard fires this test.
+ */
+
+const { bootCrmDb, seedMinimal } = require('./helpers/crmDb');
+
+// Service-level CRM calls cold-require heavy modules (pdfService,
+// nodemailer, etc.) on first use; the global 5 s per-test budget is
+// too tight for that. Bump it for this file only.
+jest.setTimeout(30000);
+
+describe('discount line items (negative unit_price_minor)', () => {
+  let db;
+  let cleanup;
+  let adminId;
+  let customerId;
+  let invoiceService;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ adminId, customerId } = await seedMinimal(db));
+    invoiceService = require('../../src/services/invoiceService');
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  // Quote-side coverage of the symmetric validator + guard is
+  // deliberately omitted: createQuote's init path takes ~30 s under
+  // this harness (something in pdfService / emailProcessor cold-
+  // require), which would push the suite well past CI's per-test
+  // budget. The shape of the guard is identical to the invoice one
+  // covered below; a future change to extract the slow init or to
+  // stub it for tests should re-enable a parallel quote test.
+
+  describe('invoices', () => {
+    it('accepts a negative-price line and computes the net correctly', async () => {
+      const { invoiceIds } = await invoiceService.createInvoice({
+        customerAccountId: customerId,
+        currency: 'CHF',
+        vatRate: 0,
+        lineItems: [
+          { position: 1, quantity: 1, description: 'Photo service', unit_price_minor: 20000, discount_percent: 0 },
+          { position: 2, quantity: 1, description: 'Treuerabatt',   unit_price_minor: -5000, discount_percent: 0 },
+        ],
+      }, adminId);
+
+      expect(Array.isArray(invoiceIds)).toBe(true);
+      expect(invoiceIds.length).toBe(1);
+
+      const row = await db('invoices').where({ id: invoiceIds[0] }).first();
+      expect(row.net_amount_minor).toBe(15000);
+      expect(row.total_amount_minor).toBe(15000);
+    });
+
+    it('rejects when the discount drives the total negative', async () => {
+      await expect(invoiceService.createInvoice({
+        customerAccountId: customerId,
+        currency: 'CHF',
+        vatRate: 0,
+        lineItems: [
+          { position: 1, quantity: 1, description: 'Photo service', unit_price_minor: 10000, discount_percent: 0 },
+          { position: 2, quantity: 1, description: 'Übergroßer Rabatt', unit_price_minor: -50000, discount_percent: 0 },
+        ],
+      }, adminId)).rejects.toMatchObject({
+        code: 'INVOICE_TOTAL_NEGATIVE',
+        statusCode: 400,
+      });
+    });
+  });
+});

backend/__tests__/integration/emailTemplateBoot.test.js

@@ -0,0 +1,98 @@
+/**
+ * Boot-time email-template self-heal:
+ *   1. Seeds the CRM / contract / event-reminder templates on an
+ *      install that's never had them before.
+ *   2. Recovers email_queue rows that previously exhausted their
+ *      retries because their template was missing.
+ *
+ * The failure that triggered this fix (2026-05-27) had Ralf's beta
+ * box failing every `quote_sent` / `invoice_sent` send for ~14h
+ * because crmEmailTemplates.ensureCrmEmailTemplatesSeeded was
+ * defined but never called. After 3 retries the rows sat in
+ * status='pending' forever; nothing in the admin UI signalled the
+ * problem. Both halves of that regression are covered here.
+ */
+
+const { bootCrmDb } = require('./helpers/crmDb');
+
+describe('email template self-heal at boot', () => {
+  let db;
+  let cleanup;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  it('seeds crm/contract/event-reminder templates and recovers stuck queue rows', async () => {
+    // Sanity: a fresh CRM-migrated DB does NOT carry CRM templates —
+    // 107_crm_consolidated documents the deliberate split (templates
+    // are self-healed at runtime, not inserted by the migration).
+    const before = await db('email_templates')
+      .whereIn('template_key', ['quote_sent', 'invoice_sent', 'storno_issued'])
+      .pluck('template_key');
+    expect(before).toEqual([]);
+
+    // Seed a stuck queue row that mirrors what we found on Ralf's box:
+    // quote_sent send attempted 3 times, each time failed because the
+    // template didn't exist, queue processor gave up.
+    const queueRowIds = await db('email_queue').insert({
+      recipient_email: 'customer@example.com',
+      email_type: 'quote_sent',
+      email_data: JSON.stringify({ quote_number: 'Q-2026-0001' }),
+      status: 'pending',
+      retry_count: 3,
+      error_message: "Email template 'quote_sent' not found",
+      created_at: new Date(),
+    }).returning('id');
+    const queueRowId = typeof queueRowIds[0] === 'object' ? queueRowIds[0].id : queueRowIds[0];
+
+    // Also seed an UNRELATED stuck row (different template, NOT one
+    // we're going to insert) to confirm the recovery is targeted —
+    // it must not blanket-reset every retry-exhausted row.
+    const unrelatedIds = await db('email_queue').insert({
+      recipient_email: 'someone@example.com',
+      email_type: 'some_other_template',
+      email_data: JSON.stringify({}),
+      status: 'pending',
+      retry_count: 3,
+      error_message: 'SMTP timeout',
+      created_at: new Date(),
+    }).returning('id');
+    const unrelatedId = typeof unrelatedIds[0] === 'object' ? unrelatedIds[0].id : unrelatedIds[0];
+
+    // The seeders use module-level caches (`_seeded = true`). When
+    // jest runs this test in isolation that cache starts fresh; in
+    // the full suite no other test currently calls these seeders, so
+    // the first call here also runs the real work. Reset the cache
+    // defensively in case a future test changes that.
+    jest.resetModules();
+    const { seedEmailTemplatesAndRecoverQueue } = require('../../src/services/_emailTemplateBoot');
+
+    const result = await seedEmailTemplatesAndRecoverQueue(db, null);
+
+    // Templates landed.
+    expect(result.seeded).toEqual(expect.arrayContaining([
+      'quote_sent', 'invoice_sent', 'storno_issued',
+    ]));
+    const after = await db('email_templates')
+      .whereIn('template_key', ['quote_sent', 'invoice_sent', 'storno_issued'])
+      .pluck('template_key');
+    expect(after.sort()).toEqual(['invoice_sent', 'quote_sent', 'storno_issued']);
+
+    // Stuck quote_sent row was recovered.
+    expect(result.recovered).toBeGreaterThanOrEqual(1);
+    const recoveredRow = await db('email_queue').where({ id: queueRowId }).first();
+    expect(recoveredRow.retry_count).toBe(0);
+    expect(recoveredRow.error_message).toBeNull();
+    expect(recoveredRow.status).toBe('pending'); // ready for the next tick
+
+    // Unrelated stuck row was NOT touched.
+    const unrelatedRow = await db('email_queue').where({ id: unrelatedId }).first();
+    expect(unrelatedRow.retry_count).toBe(3);
+    expect(unrelatedRow.error_message).toBe('SMTP timeout');
+  });
+});

backend/__tests__/integration/eventTypeRename.test.js

@@ -0,0 +1,64 @@
+/**
+ * Renaming an event type's slug_prefix must CASCADE to everything keyed on the
+ * old slug, so a rename behaves like a rename rather than silently detaching
+ * existing events/quotes and orphaning the per-type pre-event reminder template.
+ */
+const { bootCrmDb, seedMinimal } = require('./helpers/crmDb');
+
+// bootCrmDb runs the full core-migration set in beforeAll.
+jest.setTimeout(30000);
+
+describe('event type slug rename cascade', () => {
+  let db;
+  let cleanup;
+  let customerId;
+  let eventTypeService;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ customerId } = await seedMinimal(db));
+    eventTypeService = require('../../src/services/eventTypeService');
+  }, 120000);
+
+  afterAll(async () => { if (cleanup) await cleanup(); });
+
+  it('re-points events + quotes + the reminder template from old slug to new', async () => {
+    // A non-system event type with slug 'party'.
+    const [typeId] = await db('event_types').insert({ name: 'Party', slug_prefix: 'party', is_active: true });
+
+    // An authored per-type reminder template + an event + a quote, all on 'party'.
+    await db('email_templates').insert({ template_key: 'event_reminder_party', subject_en: 'Party reminder' });
+    await db('events').insert({
+      event_type: 'party', password_hash: 'x', expires_at: new Date(Date.now() + 9e9).toISOString(),
+      is_active: true, is_archived: false, slug: 'party-ev', share_link: 'party-ev',
+      event_name: 'A party', event_date: '2026-09-01',
+    });
+    await db('quotes').insert({
+      quote_number: 'Q-PARTY-1', customer_account_id: customerId, issue_date: '2026-01-01', event_type: 'party',
+    });
+
+    // Rename the slug.
+    await eventTypeService.updateEventType(typeId, { slug_prefix: 'concert' });
+
+    // Event + quote follow the rename.
+    expect((await db('events').where({ slug: 'party-ev' }).first()).event_type).toBe('concert');
+    expect((await db('quotes').where({ quote_number: 'Q-PARTY-1' }).first()).event_type).toBe('concert');
+    // The authored reminder template moved (subject/body preserved), old key gone.
+    expect(await db('email_templates').where({ template_key: 'event_reminder_party' }).first()).toBeUndefined();
+    const moved = await db('email_templates').where({ template_key: 'event_reminder_concert' }).first();
+    expect(moved).toBeTruthy();
+    expect(moved.subject_en).toBe('Party reminder');
+  });
+
+  it('does not clobber an existing template for the new slug', async () => {
+    const [typeId] = await db('event_types').insert({ name: 'Gala', slug_prefix: 'gala', is_active: true });
+    await db('email_templates').insert({ template_key: 'event_reminder_gala', subject_en: 'old gala' });
+    await db('email_templates').insert({ template_key: 'event_reminder_soiree', subject_en: 'existing soiree' });
+
+    await eventTypeService.updateEventType(typeId, { slug_prefix: 'soiree' });
+
+    // Target already existed → left intact; source not force-merged over it.
+    expect((await db('email_templates').where({ template_key: 'event_reminder_soiree' }).first()).subject_en)
+      .toBe('existing soiree');
+  });
+});

backend/__tests__/integration/galleryShortUrlRoute.test.js

@@ -0,0 +1,231 @@
+/**
+ * HTTP-level tests for the `/s/:shortSlug` public resolver (#699).
+ *
+ * Verifies the contract the public route is expected to honour:
+ *   - Browser UA → 302 to target_path
+ *   - Social crawler UA → 200 with OG <meta>, canonical = /s/<slug>
+ *   - Soft-deleted slug → 410 Gone (intentional-delete signal)
+ *   - Unknown slug → 404 Not Found
+ *   - Hit count increments after successful resolutions (both shapes)
+ *
+ * Mirrors the production server.js wiring but doesn't load the whole
+ * server — the surrounding middleware (CORS, helmet, rate limiters)
+ * isn't part of this route's contract.
+ */
+const express = require('express');
+const request = require('supertest');
+
+const { bootCrmDb } = require('./helpers/crmDb');
+
+jest.setTimeout(60000);
+
+let db; let cleanup; let service; let app;
+
+beforeAll(async () => {
+  ({ db, cleanup } = await bootCrmDb());
+
+  // Persist a business_profile + business_name so buildOgMetadata's
+  // settings-based fields populate consistently.
+  const { upsertAppSetting } = require('../../src/utils/appSettings');
+  await upsertAppSetting('branding_company_name', JSON.stringify('Test Studio'), 'string');
+
+  service = require('../../src/services/galleryShortUrlService');
+  const {
+    isSocialCrawler, buildOgMetadata, renderOgHtml,
+  } = require('../../src/services/galleryOgService');
+
+  app = express();
+  app.get('/s/:shortSlug', async (req, res) => {
+    try {
+      const row = await service.findByShortSlug(req.params.shortSlug);
+      if (!row) return res.status(404).type('text/plain').send('Short URL not found');
+      if (row.deleted_at) return res.status(410).type('text/plain').send('Short URL has been removed');
+
+      if (isSocialCrawler(req.get('user-agent'))) {
+        const event = await db('events').where({ id: row.event_id }).first('slug');
+        if (event?.slug) {
+          const meta = await buildOgMetadata(event.slug, req.originalUrl);
+          const base = (process.env.FRONTEND_URL || 'http://localhost:3000').replace(/\/$/, '');
+          meta.url = `${base}/s/${row.short_slug}`;
+          res.set('Cache-Control', 'public, max-age=300');
+          res.set('Content-Type', 'text/html; charset=utf-8');
+          res.send(renderOgHtml(meta));
+          service.recordHit(row.id).catch(() => {});
+          return;
+        }
+        return res.status(410).type('text/plain').send('Short URL points at a deleted event');
+      }
+
+      service.recordHit(row.id).catch(() => {});
+      return res.redirect(302, row.target_path);
+    } catch (err) {
+      return res.status(500).type('text/plain').send(err.message);
+    }
+  });
+}, 120000);
+
+afterAll(async () => { if (cleanup) await cleanup(); });
+
+async function seedEventAndShortUrl({ slug = `evt-${Date.now()}`, shortSlug }) {
+  const farFuture = new Date(Date.now() + 365 * 86400000).toISOString();
+  const [eventId] = await db('events').insert({
+    slug,
+    event_type: 'wedding',
+    event_name: 'Test Event',
+    event_date: '2026-06-05',
+    password_hash: 'x',
+    expires_at: farFuture,
+    is_active: true,
+    is_archived: false,
+    share_link: slug,
+    share_token: `tok${Math.random().toString(36).slice(2, 12)}`,
+    welcome_message: null,
+  });
+  const row = await service.createShortUrl({
+    eventId, customSlug: shortSlug,
+  });
+  return { eventId, shortUrl: row };
+}
+
+// User-agent strings the production `isSocialCrawler` helper matches.
+// Snapshot known-true samples here so the test stays in sync if the
+// helper's allowlist evolves.
+const BOT_UA_WHATSAPP = 'WhatsApp/2.23.20.0';
+const BOT_UA_FACEBOOK = 'facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)';
+const BROWSER_UA = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15';
+
+describe('GET /s/:shortSlug — browser (302 redirect)', () => {
+  it('redirects to the snapshotted target_path with a 302', async () => {
+    const { shortUrl } = await seedEventAndShortUrl({
+      slug: 'browser-redirect', shortSlug: 'go-here',
+    });
+    const res = await request(app)
+      .get('/s/go-here')
+      .set('User-Agent', BROWSER_UA);
+    expect(res.status).toBe(302);
+    expect(res.headers.location).toBe(shortUrl.target_path);
+    expect(res.headers.location).toMatch(/^\/gallery\//);
+  });
+
+  it('increments hit_count on a browser hit (fire-and-forget — wait briefly)', async () => {
+    await seedEventAndShortUrl({
+      slug: 'hit-browser', shortSlug: 'hit-from-browser',
+    });
+    await request(app).get('/s/hit-from-browser').set('User-Agent', BROWSER_UA);
+    await new Promise((r) => setTimeout(r, 50));
+    const row = await service.findByShortSlug('hit-from-browser');
+    expect(row.hit_count).toBe(1);
+    expect(row.last_hit_at).toBeTruthy();
+  });
+});
+
+describe('GET /s/:shortSlug — social crawler (OG metadata)', () => {
+  it('returns 200 with OG HTML for WhatsApp UA', async () => {
+    await seedEventAndShortUrl({
+      slug: 'whatsapp-og', shortSlug: 'wa-preview',
+    });
+    const res = await request(app)
+      .get('/s/wa-preview')
+      .set('User-Agent', BOT_UA_WHATSAPP);
+    expect(res.status).toBe(200);
+    expect(res.headers['content-type']).toMatch(/text\/html/);
+    expect(res.text).toContain('<meta');
+    expect(res.text).toMatch(/og:title/);
+    expect(res.text).toMatch(/og:url/);
+  });
+
+  it('og:url canonical points at /s/<slug>, not the underlying gallery URL', async () => {
+    await seedEventAndShortUrl({
+      slug: 'canonical-test', shortSlug: 'canonical-short',
+    });
+    const res = await request(app)
+      .get('/s/canonical-short')
+      .set('User-Agent', BOT_UA_FACEBOOK);
+    expect(res.status).toBe(200);
+    // The og:url meta tag must contain the short-URL path, not the
+    // /gallery/<slug> path — this is the cache-key invariant from #699.
+    expect(res.text).toMatch(/property="og:url"\s+content="[^"]*\/s\/canonical-short"/);
+    expect(res.text).not.toMatch(
+      /property="og:url"\s+content="[^"]*\/gallery\/canonical-test"/
+    );
+  });
+
+  it('sets a short cache header so scrapers can re-fetch when admin rotates the preview', async () => {
+    await seedEventAndShortUrl({
+      slug: 'cache-header', shortSlug: 'cache-test',
+    });
+    const res = await request(app)
+      .get('/s/cache-test')
+      .set('User-Agent', BOT_UA_WHATSAPP);
+    expect(res.headers['cache-control']).toMatch(/public/);
+    expect(res.headers['cache-control']).toMatch(/max-age=300/);
+  });
+
+  it('increments hit_count on a crawler hit as well', async () => {
+    await seedEventAndShortUrl({
+      slug: 'hit-bot', shortSlug: 'hit-from-bot',
+    });
+    await request(app).get('/s/hit-from-bot').set('User-Agent', BOT_UA_WHATSAPP);
+    await new Promise((r) => setTimeout(r, 50));
+    const row = await service.findByShortSlug('hit-from-bot');
+    expect(row.hit_count).toBe(1);
+  });
+});
+
+describe('GET /s/:shortSlug — error states', () => {
+  it('404 for an unknown slug', async () => {
+    const res = await request(app)
+      .get('/s/never-existed')
+      .set('User-Agent', BROWSER_UA);
+    expect(res.status).toBe(404);
+  });
+
+  it('410 for a soft-deleted slug (intentional-delete signal)', async () => {
+    const { shortUrl } = await seedEventAndShortUrl({
+      slug: 'gone-test', shortSlug: 'gone-slug',
+    });
+    await service.softDelete(shortUrl.id, null);
+    const res = await request(app)
+      .get('/s/gone-slug')
+      .set('User-Agent', BROWSER_UA);
+    expect(res.status).toBe(410);
+  });
+
+  it('410 if the event was hard-deleted but the short URL row somehow survives', async () => {
+    const { eventId } = await seedEventAndShortUrl({
+      slug: 'orphan-test', shortSlug: 'orphan-slug',
+    });
+    // Hard-delete the event row (FK CASCADE would normally clean up the
+    // short URL too — but if CASCADE didn't fire for whatever reason
+    // (e.g. SQLite foreign_keys pragma off in a particular runtime), the
+    // resolver should still degrade safely).
+    // SQLite's foreign_keys pragma is OFF by default; the migration
+    // doesn't toggle it, so this delete leaves the short URL row.
+    await db('events').where({ id: eventId }).delete();
+    const res = await request(app)
+      .get('/s/orphan-slug')
+      .set('User-Agent', BOT_UA_WHATSAPP);
+    expect(res.status).toBe(410);
+  });
+
+  it('404 for a malformed slug (rejected at validation, no DB hit)', async () => {
+    const res = await request(app)
+      .get('/s/UPPER_CASE')
+      .set('User-Agent', BROWSER_UA);
+    expect(res.status).toBe(404);
+  });
+});
+
+describe('Regression — existing URL paths must still respond the same', () => {
+  // The /s/* namespace is additive: it must NOT shadow /gallery/*
+  // or any of the OG routes. We don't load the whole app here, but we
+  // can at least pin that the route param doesn't accept slashes —
+  // i.e. /s/foo/bar must NOT be matched by our handler.
+  it('the /s/:shortSlug route does not match nested paths', async () => {
+    const res = await request(app)
+      .get('/s/foo/bar')
+      .set('User-Agent', BROWSER_UA);
+    // Express returns its default 404 when no route matches the path.
+    expect(res.status).toBe(404);
+  });
+});

backend/__tests__/integration/galleryShortUrls.test.js

@@ -0,0 +1,282 @@
+/**
+ * Integration tests for the branded short-URL service (#699).
+ *
+ * Exercises createShortUrl + findByShortSlug + listForEvent + softDelete
+ * + recordHit against a real SQLite DB, including the contracts that
+ * matter for production correctness:
+ *
+ *   - Custom slug + collision detection (409 with `suggested`)
+ *   - Auto-generated slug from event slug + year
+ *   - Soft-delete preserves the row (admin can audit)
+ *   - target_path snapshots at create time (toggling the global
+ *     "Use short gallery URLs" setting later doesn't change existing
+ *     short URLs — backward-compat invariant from #699)
+ *   - hit_count increments idempotently
+ *   - findByShortSlug returns soft-deleted rows (caller decides 410 vs 404)
+ *
+ * Boots one DB for the whole file (cheap on SQLite); each test seeds
+ * its own event row to keep scope clean.
+ */
+const { bootCrmDb } = require('./helpers/crmDb');
+
+jest.setTimeout(60000);
+
+let db; let cleanup; let service; let adminId;
+
+beforeAll(async () => {
+  ({ db, cleanup } = await bootCrmDb());
+
+  // Minimal admin for created_by audit.
+  const adminInsert = await db('admin_users').insert({
+    username: 'shorturl-test',
+    email: 'shorturl@example.com',
+    password_hash: 'x',
+    must_change_password: false,
+    created_at: new Date(),
+  }).returning('id');
+  adminId = adminInsert[0]?.id ?? adminInsert[0];
+
+  service = require('../../src/services/galleryShortUrlService');
+}, 120000);
+
+afterAll(async () => { if (cleanup) await cleanup(); });
+
+// Each test seeds a fresh event so collisions / counter state don't leak.
+async function seedEvent(overrides = {}) {
+  const slug = overrides.slug || `evt-${Date.now()}-${Math.random().toString(36).slice(2, 6)}`;
+  const farFuture = new Date(Date.now() + 365 * 86400000).toISOString();
+  const [id] = await db('events').insert({
+    slug,
+    event_type: 'wedding',
+    event_name: overrides.event_name || 'Test Wedding',
+    event_date: overrides.event_date || '2026-06-05',
+    password_hash: 'x',
+    expires_at: farFuture,
+    is_active: true,
+    is_archived: false,
+    share_link: slug,
+    share_token: overrides.share_token || `tok${Math.random().toString(36).slice(2, 12)}`,
+    welcome_message: null,
+  });
+  const event = await db('events').where({ id }).first();
+  return event;
+}
+
+describe('createShortUrl — custom slug', () => {
+  it('creates with a custom slug', async () => {
+    const event = await seedEvent({ slug: 'sofia-grad-1' });
+    const row = await service.createShortUrl({
+      eventId: event.id,
+      customSlug: 'sofia-graduation-1',
+      createdBy: adminId,
+    });
+    expect(row.short_slug).toBe('sofia-graduation-1');
+    expect(row.target_path).toBe(`/gallery/${event.slug}`);
+    expect(row.event_id).toBe(event.id);
+    expect(row.hit_count).toBe(0);
+  });
+
+  it('lowercases the input — operators pasting mixed-case still get a clean slug', async () => {
+    const event = await seedEvent({ slug: 'sofia-grad-2' });
+    const row = await service.createShortUrl({
+      eventId: event.id,
+      customSlug: 'Sofia-GraduAtion-2',  // mixed case
+      createdBy: adminId,
+    });
+    expect(row.short_slug).toBe('sofia-graduation-2');
+  });
+
+  it('rejects an invalid slug with INVALID_SLUG code', async () => {
+    const event = await seedEvent({ slug: 'invalid-test' });
+    await expect(service.createShortUrl({
+      eventId: event.id,
+      customSlug: 'invalid slug with spaces',
+      createdBy: adminId,
+    })).rejects.toMatchObject({ code: 'INVALID_SLUG' });
+  });
+
+  it('rejects a reserved slug with INVALID_SLUG code', async () => {
+    const event = await seedEvent({ slug: 'reserved-test' });
+    await expect(service.createShortUrl({
+      eventId: event.id,
+      customSlug: 'admin',
+      createdBy: adminId,
+    })).rejects.toMatchObject({ code: 'INVALID_SLUG' });
+  });
+
+  it('rejects a duplicate slug with SLUG_TAKEN + suggested fallback', async () => {
+    const event1 = await seedEvent({ slug: 'dup-test-1' });
+    const event2 = await seedEvent({ slug: 'dup-test-2' });
+    await service.createShortUrl({ eventId: event1.id, customSlug: 'collide-me' });
+    await expect(service.createShortUrl({
+      eventId: event2.id, customSlug: 'collide-me',
+    })).rejects.toMatchObject({
+      code: 'SLUG_TAKEN',
+      suggested: expect.any(String),
+    });
+  });
+
+  it('throws EVENT_NOT_FOUND when the event id does not exist', async () => {
+    await expect(service.createShortUrl({
+      eventId: 9999999, customSlug: 'no-event',
+    })).rejects.toMatchObject({ code: 'EVENT_NOT_FOUND' });
+  });
+});
+
+describe('createShortUrl — auto-generated slug', () => {
+  it('uses event slug + year when no custom slug provided', async () => {
+    const event = await seedEvent({
+      slug: 'autogen-wedding', event_date: '2026-06-05',
+    });
+    const row = await service.createShortUrl({
+      eventId: event.id,
+      createdBy: adminId,
+    });
+    // First-choice candidate is just the slug; takes that.
+    expect(row.short_slug).toBe('autogen-wedding');
+  });
+
+  it('falls back to slug-year when the bare slug is already taken', async () => {
+    // Both events SHARE the same canonical slug so the first-choice
+    // bare-slug candidate is burned, forcing autoGen to try the
+    // year-suffixed variant.
+    const event1 = await seedEvent({
+      slug: 'collide-base', event_date: '2026-07-01',
+    });
+    await service.createShortUrl({
+      eventId: event1.id, customSlug: 'collide-base',
+    });
+    const event2 = await seedEvent({
+      slug: 'collide-base-2', event_date: '2026-07-01',
+    });
+    // Force the bare candidate of event2 to also collide by burning it.
+    await service.createShortUrl({
+      eventId: event1.id, customSlug: 'collide-base-2',
+    });
+    const row = await service.createShortUrl({
+      eventId: event2.id,  // No custom — auto-gen from event2.slug
+    });
+    // Bare candidate `collide-base-2` is taken → year-suffixed picks.
+    expect(row.short_slug).toBe('collide-base-2-2026');
+  });
+});
+
+describe('createShortUrl — target_path snapshotting (#699 backward-compat)', () => {
+  it('uses /gallery/<slug> when the global short-URLs setting is OFF (default)', async () => {
+    const event = await seedEvent({ slug: 'snapshot-off' });
+    const row = await service.createShortUrl({
+      eventId: event.id, customSlug: 'snap-off',
+    });
+    expect(row.target_path).toBe(`/gallery/${event.slug}`);
+  });
+
+  it('uses /gallery/<share_token> when the global setting is ON at create time', async () => {
+    // Persist the setting.
+    const { upsertAppSetting } = require('../../src/utils/appSettings');
+    await upsertAppSetting('general_use_short_gallery_urls', JSON.stringify(true), 'system');
+    try {
+      const event = await seedEvent({ slug: 'snapshot-on', share_token: 'tokenAbc123' });
+      const row = await service.createShortUrl({
+        eventId: event.id, customSlug: 'snap-on',
+      });
+      expect(row.target_path).toBe(`/gallery/${event.share_token}`);
+
+      // CRITICAL backward-compat invariant: now flip the setting OFF.
+      // Existing short URLs must still resolve to the same target_path
+      // they were created with — operator's existing share links don't
+      // silently change behaviour.
+      await upsertAppSetting('general_use_short_gallery_urls', JSON.stringify(false), 'system');
+      const refetched = await service.findByShortSlug('snap-on');
+      expect(refetched.target_path).toBe(`/gallery/${event.share_token}`);
+    } finally {
+      await upsertAppSetting('general_use_short_gallery_urls', JSON.stringify(false), 'system');
+    }
+  });
+});
+
+describe('findByShortSlug + listForEvent', () => {
+  it('returns null for an unknown slug', async () => {
+    expect(await service.findByShortSlug('does-not-exist-xyz')).toBeNull();
+  });
+
+  it('returns null for a malformed slug (no DB hit)', async () => {
+    expect(await service.findByShortSlug('UPPER_CASE')).toBeNull();
+    expect(await service.findByShortSlug('with spaces')).toBeNull();
+    expect(await service.findByShortSlug('')).toBeNull();
+  });
+
+  it('returns soft-deleted rows (caller decides 410 vs 404)', async () => {
+    const event = await seedEvent({ slug: 'softdel-find' });
+    const created = await service.createShortUrl({
+      eventId: event.id, customSlug: 'find-deleted',
+    });
+    await service.softDelete(created.id, adminId);
+    const fetched = await service.findByShortSlug('find-deleted');
+    expect(fetched).not.toBeNull();
+    expect(fetched.deleted_at).toBeTruthy();
+  });
+
+  it('listForEvent excludes soft-deleted rows', async () => {
+    const event = await seedEvent({ slug: 'list-test' });
+    const live = await service.createShortUrl({
+      eventId: event.id, customSlug: 'list-live',
+    });
+    const deleted = await service.createShortUrl({
+      eventId: event.id, customSlug: 'list-deleted',
+    });
+    await service.softDelete(deleted.id, adminId);
+    const list = await service.listForEvent(event.id);
+    const ids = list.map((r) => r.id);
+    expect(ids).toContain(live.id);
+    expect(ids).not.toContain(deleted.id);
+  });
+});
+
+describe('softDelete', () => {
+  it('returns true on first call, false on second (idempotent admin clicks)', async () => {
+    const event = await seedEvent({ slug: 'softdel-idem' });
+    const created = await service.createShortUrl({
+      eventId: event.id, customSlug: 'idem-delete',
+    });
+    expect(await service.softDelete(created.id, adminId)).toBe(true);
+    expect(await service.softDelete(created.id, adminId)).toBe(false);
+  });
+
+  it('returns false for an unknown id (caller maps to 404)', async () => {
+    expect(await service.softDelete(9999999, adminId)).toBe(false);
+  });
+});
+
+describe('createShortUrl after soft-delete — slug rotation', () => {
+  it('re-creating a soft-deleted slug succeeds (purges the deleted row)', async () => {
+    const event = await seedEvent({ slug: 'rotate' });
+    const first = await service.createShortUrl({
+      eventId: event.id, customSlug: 'rotate-me',
+    });
+    await service.softDelete(first.id, adminId);
+    // The slug is now reclaimable for a fresh row.
+    const second = await service.createShortUrl({
+      eventId: event.id, customSlug: 'rotate-me',
+    });
+    expect(second.id).not.toBe(first.id);
+    expect(second.short_slug).toBe('rotate-me');
+  });
+});
+
+describe('recordHit', () => {
+  it('increments hit_count + stamps last_hit_at', async () => {
+    const event = await seedEvent({ slug: 'hit-counter' });
+    const row = await service.createShortUrl({
+      eventId: event.id, customSlug: 'count-me',
+    });
+    await service.recordHit(row.id);
+    await service.recordHit(row.id);
+    const fetched = await service.findByShortSlug('count-me');
+    expect(fetched.hit_count).toBe(2);
+    expect(fetched.last_hit_at).toBeTruthy();
+  });
+
+  it('is fire-and-forget — invalid id does not throw', async () => {
+    await expect(service.recordHit(9999999)).resolves.not.toThrow();
+  });
+});

backend/__tests__/integration/helpers/crmDb.js

@@ -0,0 +1,230 @@
+/**
+ * Test harness for CRM integration tests.
+ *
+ * Boots a temp-SQLite database, runs every `migrations/core/*.up()`
+ * directly (bypassing knex's Migrator — its exclusive write lock
+ * deadlocks 001_init's nested `initializeDatabase()` call), and
+ * exposes a small helper for seeding the minimal row set that the
+ * quote/contract/invoice services need to operate.
+ *
+ * Usage:
+ *
+ *   const { bootCrmDb, seedMinimal } = require('./helpers/crmDb');
+ *
+ *   beforeAll(async () => {
+ *     ({ db, cleanup } = await bootCrmDb());
+ *     ({ adminId, customerId } = await seedMinimal(db));
+ *   });
+ *   afterAll(async () => { await cleanup(); });
+ */
+
+const fs = require('fs');
+const path = require('path');
+const os = require('os');
+const bcrypt = require('bcrypt');
+
+async function runCoreMigrations(db) {
+  await db.schema.createTable('migrations', (t) => {
+    t.increments('id').primary();
+    t.string('filename').unique().notNullable();
+    t.timestamp('applied_at').defaultTo(db.fn.now());
+  });
+
+  const coreDir = path.resolve(__dirname, '..', '..', '..', 'migrations', 'core');
+  const files = (await fs.promises.readdir(coreDir))
+    .filter((f) => f.endsWith('.js'))
+    .sort();
+
+  for (const f of files) {
+    const mod = require(path.join(coreDir, f));
+    if (typeof mod.up === 'function') {
+      await mod.up(db);
+    }
+    await db('migrations').insert({ filename: f });
+  }
+}
+
+/**
+ * Boot a clean test DB. Returns { db, cleanup, tmpDir }.
+ * Caller must invoke cleanup() in afterAll to release the SQLite file
+ * and the temp directory.
+ */
+async function bootCrmDb() {
+  const tmpDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'picpeak-crm-'));
+  process.env.NODE_ENV = 'test';
+  process.env.TEST_DATABASE_PATH = path.join(tmpDir, 'crm.db');
+  process.env.STORAGE_PATH = path.join(tmpDir, 'storage');
+  await fs.promises.mkdir(process.env.STORAGE_PATH, { recursive: true });
+
+  // No jest.resetModules() — every service the test later requires
+  // must share THIS db instance. Two module copies on one SQLite file
+  // each open their own knex pool and the SQLite write lock deadlocks
+  // the second one acquiring a connection. Caller is responsible for
+  // setting TEST_DATABASE_PATH before the first require of db.js
+  // (which knexfile reads at module-init time); bootCrmDb only works
+  // when invoked before any service import.
+  const { db } = require('../../../src/database/db');
+
+  await runCoreMigrations(db);
+
+  return {
+    db,
+    tmpDir,
+    cleanup: async () => {
+      try { await db.destroy(); } catch (_) {}
+      try { await fs.promises.rm(tmpDir, { recursive: true, force: true }); } catch (_) {}
+    },
+  };
+}
+
+/**
+ * Seed the minimal row set that quote/contract/invoice services
+ * dereference on creation: an admin user, an active customer, a
+ * business_profile row, and the app_settings keys the services read.
+ *
+ * Returns the ids the caller will pass into service calls.
+ */
+async function seedMinimal(db) {
+  const passwordHash = await bcrypt.hash('test-pass', 4); // low rounds = fast
+
+  const adminInsert = await db('admin_users').insert({
+    username: 'tester', email: 'tester@example.com',
+    password_hash: passwordHash, must_change_password: false,
+    created_at: new Date(),
+  }).returning('id');
+  const adminId = adminInsert[0]?.id ?? adminInsert[0];
+
+  // business_profile is a singleton; the row is seeded by migration 107
+  // for fresh installs. Defensive: insert if missing.
+  const profile = await db('business_profile').first();
+  if (!profile) {
+    await db('business_profile').insert({
+      legal_name: 'Test Studio',
+      default_currency: 'CHF',
+      default_locale: 'de',
+    });
+  }
+
+  const customerInsert = await db('customer_accounts').insert({
+    email: 'customer@example.com',
+    display_name: 'Test Customer',
+    password_hash: passwordHash,
+    preferred_language: 'de',
+    is_active: 1,
+    created_at: new Date(),
+  }).returning('id');
+  const customerId = customerInsert[0]?.id ?? customerInsert[0];
+
+  return { adminId, customerId };
+}
+
+// ---------------------------------------------------------------------
+// Route-test helpers (#570) — building blocks for the CRM HTTP layer
+// tests. Kept here so every supertest suite shares the same minting +
+// app-wiring shape and a refactor lands in one place.
+// ---------------------------------------------------------------------
+
+const crypto = require('crypto');
+const jwt = require('jsonwebtoken');
+const express = require('express');
+const cookieParser = require('cookie-parser');
+
+/**
+ * Promote a seeded admin into a role (default `super_admin`) so
+ * `requirePermission(...)` checks pass. seedMinimal creates an admin
+ * without a role — that's good for negative tests (expect 403) but
+ * happy-path tests need the role assignment.
+ *
+ * Returns the role id the admin was assigned to.
+ */
+async function assignAdminRole(db, adminId, roleName = 'super_admin') {
+  const role = await db('roles').where({ name: roleName }).first();
+  if (!role) {
+    throw new Error(`Role '${roleName}' not seeded — check the test DB`);
+  }
+  await db('admin_users').where({ id: adminId }).update({ role_id: role.id });
+  return role.id;
+}
+
+/**
+ * Mint an admin JWT in the same shape adminAuth middleware expects.
+ * The tests inject this via `Authorization: Bearer <token>`.
+ */
+function mintAdminToken(adminId, { expiresIn = '1h', extraClaims = {} } = {}) {
+  process.env.JWT_SECRET = process.env.JWT_SECRET || 'crm-route-test-secret';
+  return jwt.sign(
+    { id: adminId, type: 'admin', iat: Math.floor(Date.now() / 1000), ...extraClaims },
+    process.env.JWT_SECRET,
+    { expiresIn, issuer: 'picpeak-auth' }
+  );
+}
+
+/**
+ * Insert a row into one of the public-token tables for testing the
+ * loadActionToken guard outcomes. Returns the generated 64-hex token.
+ *
+ * Usage:
+ *   await createPublicToken(db, 'quote_action_tokens', { quote_id: q.id });
+ *   await createPublicToken(db, 'quote_action_tokens', { quote_id: q.id, expires_at: pastDate });
+ *   await createPublicToken(db, 'quote_action_tokens', { quote_id: q.id, used_at: new Date() });
+ *   await createPublicToken(db, 'quote_action_tokens', { quote_id: q.id, expires_at: null });
+ */
+async function createPublicToken(db, tableName, opts = {}) {
+  const token = opts.token || crypto.randomBytes(32).toString('hex');
+  const expiresAt = opts.expires_at === null
+    ? null
+    : (opts.expires_at || new Date(Date.now() + 7 * 24 * 60 * 60 * 1000));
+  // Serialise Date → ISO string. Bare Date objects round-tripped
+  // inconsistently through knex+SQLite — sometimes as epoch ms,
+  // sometimes via .toString() → literal "[object Object]" which then
+  // parses back to NaN and silently defeats the expiry guard.
+  const toStorable = (v) => (v instanceof Date ? v.toISOString() : v);
+  const row = {
+    ...opts,
+    token,
+    expires_at: toStorable(expiresAt),
+    created_at: toStorable(new Date()),
+  };
+  await db(tableName).insert(row);
+  return token;
+}
+
+/**
+ * Build an Express app with the requested route file mounted. Mirrors
+ * the production app's middleware shape (json + cookies) but skips
+ * everything else (CORS, helmet, rate limiters) — route tests pin the
+ * handler's contract, not the surrounding cross-cutting concerns.
+ *
+ * Example:
+ *   const app = buildRouteApp('/api/public/quotes',
+ *     require('../../src/routes/publicQuotes'));
+ */
+function buildRouteApp(mount, router) {
+  const app = express();
+  app.use(express.json());
+  app.use(cookieParser());
+  app.use(mount, router);
+  // Catch-all error handler. Mirrors the real middleware/errorHandler:
+  // AppError subclasses (ValidationError, NotFoundError, etc.) use
+  // `.statusCode` (NOT `.status` — getting that wrong silently maps
+  // every 400 / 404 / 410 to 500 in tests).
+  // eslint-disable-next-line no-unused-vars
+  app.use((err, req, res, next) => {
+    const statusCode = err.statusCode || err.status || 500;
+    res.status(statusCode).json({
+      error: err.message || 'Internal error',
+      code: err.code,
+      ...(err.details ? { details: err.details } : {}),
+    });
+  });
+  return app;
+}
+
+module.exports = {
+  bootCrmDb,
+  seedMinimal,
+  assignAdminRole,
+  mintAdminToken,
+  createPublicToken,
+  buildRouteApp,
+};

backend/__tests__/integration/imageProcessor.storage.test.js

@@ -137,6 +137,41 @@ describe.each(backendCases())('imageProcessor through $name', ({ setup }) => {
     expect(await storage.exists(key)).toBe(true);
   });
 
+  test('generatePreviewImage writes to /previews and skips enlargement of small originals', async () => {
+    const src = await makeSourceJpeg(tmpDir, 'preview-source.jpg');
+    const key = await imageProcessor.generatePreviewImage(src);
+    expect(key).toBe('previews/preview_preview-source.jpg');
+    expect(await storage.exists(key)).toBe(true);
+
+    if (storage.kind() === 'local') {
+      const meta = await sharp(storage.resolveLocalPath(key)).metadata();
+      expect(meta.format).toBe('jpeg');
+      // Source is 800x600 and default longEdge is 1920 with
+      // withoutEnlargement: true → preview must NOT be upscaled.
+      expect(meta.width).toBe(800);
+      expect(meta.height).toBe(600);
+    }
+  });
+
+  test('generatePreviewImage shrinks oversized images to fit longEdge while preserving aspect', async () => {
+    const src = await makeSourceJpeg(tmpDir, 'preview-shrink.jpg');
+    const key = await imageProcessor.generatePreviewImage(src, { longEdge: 400 });
+    expect(await storage.exists(key)).toBe(true);
+    if (storage.kind() === 'local') {
+      const meta = await sharp(storage.resolveLocalPath(key)).metadata();
+      // 800x600 → fit:'inside' inside 400×400 → 400×300.
+      expect(meta.width).toBe(400);
+      expect(meta.height).toBe(300);
+    }
+  });
+
+  test('isPreviewValid returns true for a real preview and false for a missing key', async () => {
+    const src = await makeSourceJpeg(tmpDir, 'preview-valid.jpg');
+    const key = await imageProcessor.generatePreviewImage(src);
+    expect(await imageProcessor.isPreviewValid(key)).toBe(true);
+    expect(await imageProcessor.isPreviewValid('previews/does-not-exist.jpg')).toBe(false);
+  });
+
   test('isThumbnailValid returns true for a good thumbnail and false for nothing', async () => {
     const src = await makeSourceJpeg(tmpDir, 'valid-check.jpg');
     const key = await imageProcessor.generateThumbnail(src);

backend/__tests__/integration/incomingInvoiceRebill.test.js

@@ -0,0 +1,211 @@
+/**
+ * Incoming-invoice categorisation + re-bill chain (expenseService) against a
+ * real SQLite schema. Covers the bits unit tests can't: the disposition state
+ * machine, re-categorisation unwind, the per-event PENDING pool + bundling, and
+ * the monthly accumulator immediate-bill — i.e. that categorizeInbound /
+ * billPendingRebills actually mint / amend invoice rows correctly.
+ *
+ * No date-range comparisons are exercised here, so it's safe on SQLite (the
+ * usual PG-vs-SQLite date pitfall — [[feedback_pg_date_columns_serialize]] —
+ * doesn't apply to this path).
+ */
+const { bootCrmDb, seedMinimal } = require('./helpers/crmDb');
+
+// Service-level CRM calls cold-require heavy modules (pdfService, nodemailer)
+// on first use; bump the budget for this file.
+jest.setTimeout(60000);
+
+describe('incoming-invoice categorise / re-bill chain', () => {
+  let db;
+  let cleanup;
+  let adminId;
+  let expenseService;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    // logActivity writes to activity_logs via the GLOBAL db. createInvoice (and
+    // appendToMonthlyDraft) call it INSIDE the transaction we pass them, and a
+    // second write connection deadlocks against the held write lock on
+    // SQLite. It's fire-and-forget audit noise, irrelevant to these
+    // assertions, so stub it BEFORE the services destructure it at require
+    // time. (Production runs Postgres, where the concurrent write is fine.)
+    const dbModule = require('../../src/database/db');
+    dbModule.logActivity = async () => {};
+    ({ adminId } = await seedMinimal(db));
+    expenseService = require('../../src/services/expenseService');
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  const unwrapId = (ins) => (typeof ins[0] === 'object' ? ins[0].id : ins[0]);
+
+  async function captureDoc(overrides = {}) {
+    const ins = await db('inbound_documents').insert({
+      source: 'upload',
+      status: 'unsorted',
+      parse_status: 'pending',
+      parse_method: 'none',
+      supplier_name: 'ACME AG',
+      currency: 'CHF',
+      total_amount_minor: 10000,
+      invoice_date: '2026-06-01',
+      created_at: new Date(),
+      updated_at: new Date(),
+      ...overrides,
+    }).returning('id');
+    return unwrapId(ins);
+  }
+
+  let customerSeq = 0;
+  async function makeCustomer(billingCadence) {
+    customerSeq += 1;
+    const ins = await db('customer_accounts').insert({
+      email: `rebill-${billingCadence || 'event'}-${customerSeq}@example.com`,
+      display_name: `Rebill ${billingCadence || 'event'} ${customerSeq}`,
+      password_hash: 'x',
+      preferred_language: 'de',
+      is_active: 1,
+      billing_cadence: billingCadence || null,
+      created_at: new Date(),
+    }).returning('id');
+    return unwrapId(ins);
+  }
+
+  it('company expense (eigener_aufwand) categorises with no invoice + no customer', async () => {
+    const id = await captureDoc();
+    const doc = await expenseService.categorizeInbound(id, { disposition: 'eigener_aufwand', categoryId: null }, adminId);
+    expect(doc.disposition).toBe('eigener_aufwand');
+    expect(doc.status).toBe('categorized');
+    expect(doc.billedInvoiceId).toBeNull();
+    expect(doc.customerAccountId).toBeNull();
+  });
+
+  it('rebill REQUIRES a customer', async () => {
+    const id = await captureDoc();
+    await expect(expenseService.categorizeInbound(id, { disposition: 'rebill' }, adminId))
+      .rejects.toMatchObject({ code: 'CUSTOMER_REQUIRED' });
+  });
+
+  it('per-event rebill stays PENDING (customer + markup stored, no invoice yet)', async () => {
+    const customerId = await makeCustomer('per_event');
+    const id = await captureDoc({ total_amount_minor: 10000 });
+    const doc = await expenseService.categorizeInbound(id, {
+      disposition: 'rebill', customerAccountId: customerId,
+      markupType: 'percent', markupPercent: 10,
+    }, adminId);
+    expect(doc.disposition).toBe('rebill');
+    expect(doc.customerAccountId).toBe(customerId);
+    expect(doc.billedInvoiceId).toBeNull(); // pending — not billed until bundled
+    expect(doc.markupType).toBe('percent');
+    expect(Number(doc.markupPercent)).toBe(10);
+  });
+
+  it('passthrough never carries a markup, even if one is sent', async () => {
+    const customerId = await makeCustomer('per_event');
+    const id = await captureDoc();
+    const doc = await expenseService.categorizeInbound(id, {
+      disposition: 'durchlaufend', customerAccountId: customerId,
+      markupType: 'percent', markupPercent: 25, // should be ignored
+    }, adminId);
+    expect(doc.disposition).toBe('durchlaufend');
+    expect(doc.customerAccountId).toBe(customerId);
+    expect(doc.markupType).toBe('none');
+    expect(doc.markupPercent).toBeNull();
+    expect(doc.billedInvoiceId).toBeNull();
+  });
+
+  it('billPendingRebills refuses monthly/manual customers (they auto-consolidate)', async () => {
+    const customerId = await makeCustomer('monthly');
+    await expect(expenseService.billPendingRebills(customerId, adminId))
+      .rejects.toMatchObject({ code: 'CADENCE_MISMATCH' });
+  });
+
+  // ── The actual invoice-MINTING paths (billPendingRebills bundling a per-event
+  // customer's pool; monthly-customer immediate-bill onto the running draft)
+  // both call invoiceService.createInvoice INSIDE a db.transaction. createInvoice
+  // claims its sequence number via the global db, which DEADLOCKS against the
+  // held write lock on a SQLite-backed harness (a second write connection blocks
+  // — verified). Production runs Postgres where the concurrent write is fine, so
+  // this is a harness limitation, not a product bug. The line-amount math is
+  // covered by the buildInboundLineItem unit tests, and createInvoice itself by
+  // discountLineItems.test.js. Below we test the UNWIND path against a
+  // hand-crafted billed state so we don't have to mint through createInvoice. ──
+
+  // Build a billed state directly: an invoice with two lines, with the inbound
+  // doc stamped onto the first line as a prior re-bill.
+  async function makeBilledDoc(customerId, { status = 'scheduled', scheduledSendAt = null, isMonthlyDraft = false } = {}) {
+    const invIns = await db('invoices').insert({
+      invoice_number: `R-TEST-${customerSeq}-${Math.floor(Math.random() * 1e9)}`,
+      customer_account_id: customerId,
+      status,
+      scheduled_send_at: scheduledSendAt,
+      is_monthly_draft: isMonthlyDraft,
+      currency: 'CHF',
+      issue_date: '2026-06-01',
+      due_date: '2026-07-01',
+      vat_rate: 0,
+      net_amount_minor: 7000, // 4000 (rebill line) + 3000 (sibling)
+      vat_amount_minor: 0,
+      total_amount_minor: 7000,
+      created_at: new Date(),
+      updated_at: new Date(),
+    }).returning('id');
+    const invoiceId = unwrapId(invIns);
+    const rebillLineIns = await db('invoice_line_items').insert({
+      invoice_id: invoiceId, position: 1, quantity: 1, description: 'Rebill Co (Weiterverrechnung)',
+      unit_price_minor: 4000, discount_percent: 0, line_total_minor: 4000,
+    }).returning('id');
+    const rebillLineId = unwrapId(rebillLineIns);
+    await db('invoice_line_items').insert({
+      invoice_id: invoiceId, position: 2, quantity: 1, description: 'Other line',
+      unit_price_minor: 3000, discount_percent: 0, line_total_minor: 3000,
+    });
+    const id = await captureDoc({ total_amount_minor: 4000, supplier_name: 'Rebill Co' });
+    await db('inbound_documents').where({ id }).update({
+      disposition: 'rebill', status: 'categorized', customer_account_id: customerId,
+      billed_invoice_id: invoiceId, billed_invoice_line_item_id: rebillLineId,
+    });
+    return { id, invoiceId, rebillLineId };
+  }
+
+  it('re-categorising a billed doc UNWINDS its re-bill line + recomputes the (mutable) invoice', async () => {
+    const customerId = await makeCustomer('per_event');
+    const { id, invoiceId, rebillLineId } = await makeBilledDoc(customerId); // scheduled, no send-at → mutable
+
+    const recat = await expenseService.categorizeInbound(id, { disposition: 'eigener_aufwand', categoryId: null }, adminId);
+    expect(recat.disposition).toBe('eigener_aufwand');
+    expect(recat.billedInvoiceId).toBeNull();
+    expect(recat.customerAccountId).toBeNull();
+
+    // The re-bill line is gone; the sibling line remains and net recomputes.
+    expect(await db('invoice_line_items').where({ id: rebillLineId }).first()).toBeUndefined();
+    const after = await db('invoices').where({ id: invoiceId }).first();
+    expect(Number(after.net_amount_minor)).toBe(3000);
+  });
+
+  it('re-categorising a doc billed on an ISSUED invoice is refused (Storno required)', async () => {
+    const customerId = await makeCustomer('per_event');
+    const { id, rebillLineId } = await makeBilledDoc(customerId, { status: 'sent' });
+
+    await expect(expenseService.categorizeInbound(id, { disposition: 'eigener_aufwand' }, adminId))
+      .rejects.toMatchObject({ code: 'INVOICE_LOCKED' });
+    // Nothing was touched — the line survives.
+    expect(await db('invoice_line_items').where({ id: rebillLineId }).first()).toBeDefined();
+  });
+
+  it('re-categorisation moves a pending item between dispositions without a stray invoice', async () => {
+    const customerId = await makeCustomer('per_event');
+    const id = await captureDoc();
+    // passthrough → pending
+    let doc = await expenseService.categorizeInbound(id, { disposition: 'durchlaufend', customerAccountId: customerId }, adminId);
+    expect(doc.customerAccountId).toBe(customerId);
+    expect(doc.billedInvoiceId).toBeNull();
+    // → company expense: customer cleared, still no invoice
+    doc = await expenseService.categorizeInbound(id, { disposition: 'eigener_aufwand' }, adminId);
+    expect(doc.disposition).toBe('eigener_aufwand');
+    expect(doc.customerAccountId).toBeNull();
+    expect(doc.billedInvoiceId).toBeNull();
+  });
+});

backend/__tests__/integration/installFromBackupBoot.test.js

@@ -0,0 +1,214 @@
+/**
+ * Install-from-backup boot hook — pins the trigger-file convention.
+ *
+ * The hook itself depends on `restoreService.restore`, which is hard
+ * to fully exercise in an integration test without a real PG cluster
+ * (sequence resync, DROP/CREATE, etc.). So we stub the actual restore
+ * and verify the BOOT HOOK logic:
+ *
+ *   - No trigger file → no-op, ran=false
+ *   - Empty trigger file → picks newest manifest from manifests/
+ *   - Non-empty trigger file → uses the path inside
+ *   - DB not empty → refuses (no restore call)
+ *   - DB not empty + FORCE env → proceeds
+ *   - Successful restore → deletes trigger file
+ *   - Failed restore → leaves trigger file in place
+ *
+ * These are the surfaces an admin will hit when actually using the
+ * feature — the docker-compose-on-real-PG end-to-end test belongs in
+ * the follow-up CI work captured as task #7 earlier today.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const { bootCrmDb } = require('./helpers/crmDb');
+
+// Stub the heavy lifting so the test stays fast + portable.
+const mockRestore = jest.fn();
+jest.mock('../../src/services/restoreService', () => ({
+  restoreService: {
+    restore: (...args) => mockRestore(...args),
+  },
+}));
+
+jest.setTimeout(30000);
+
+describe('installFromBackupBoot', () => {
+  let db;
+  let cleanup;
+  let storagePath;
+  let backupRoot;
+  let manifestsDir;
+  let tryInstallFromBackup;
+  let originalBackupRootEnv;
+  let originalForceEnv;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    storagePath = process.env.STORAGE_PATH;
+    backupRoot = path.join(storagePath, 'backup');
+    manifestsDir = path.join(backupRoot, 'manifests');
+    fs.mkdirSync(manifestsDir, { recursive: true });
+
+    originalBackupRootEnv = process.env.BACKUP_ROOT;
+    originalForceEnv = process.env.INSTALL_FROM_BACKUP_FORCE;
+    process.env.BACKUP_ROOT = backupRoot;
+
+    ({ tryInstallFromBackup } = require('../../src/services/_installFromBackupBoot'));
+  }, 120000);
+
+  afterAll(async () => {
+    if (originalBackupRootEnv === undefined) {
+      delete process.env.BACKUP_ROOT;
+    } else {
+      process.env.BACKUP_ROOT = originalBackupRootEnv;
+    }
+    if (originalForceEnv === undefined) {
+      delete process.env.INSTALL_FROM_BACKUP_FORCE;
+    } else {
+      process.env.INSTALL_FROM_BACKUP_FORCE = originalForceEnv;
+    }
+    if (cleanup) await cleanup();
+  });
+
+  beforeEach(async () => {
+    mockRestore.mockReset();
+    mockRestore.mockResolvedValue({ success: true });
+    delete process.env.INSTALL_FROM_BACKUP_FORCE;
+
+    // Clean trigger files + manifests between tests
+    for (const name of ['RESTORE_ON_INSTALL', 'RESTORE_ON_INSTALL.txt']) {
+      const p = path.join(backupRoot, name);
+      if (fs.existsSync(p)) fs.unlinkSync(p);
+    }
+    for (const f of fs.readdirSync(manifestsDir)) {
+      fs.unlinkSync(path.join(manifestsDir, f));
+    }
+
+    // Reset DB to fresh-install state
+    await db('events').del();
+    // Leave admin_users alone — fresh-install state has 1 row.
+  });
+
+  it('no trigger file → no-op', async () => {
+    const result = await tryInstallFromBackup(db);
+    expect(result.ran).toBe(false);
+    expect(mockRestore).not.toHaveBeenCalled();
+  });
+
+  it('empty trigger file picks the newest manifest from manifests/', async () => {
+    const older = path.join(manifestsDir, 'backup-manifest-001.json');
+    const newer = path.join(manifestsDir, 'backup-manifest-002.json');
+    fs.writeFileSync(older, '{}');
+    // Set the newer file's mtime slightly later so it wins the sort
+    const past = new Date(Date.now() - 60_000);
+    fs.utimesSync(older, past, past);
+    fs.writeFileSync(newer, '{}');
+
+    // Empty trigger
+    fs.writeFileSync(path.join(backupRoot, 'RESTORE_ON_INSTALL'), '');
+
+    const result = await tryInstallFromBackup(db);
+    expect(result.ran).toBe(true);
+    expect(result.manifestPath).toBe(newer);
+    expect(mockRestore).toHaveBeenCalledWith(expect.objectContaining({
+      source: 'local',
+      manifestPath: newer,
+      restoreType: 'full',
+      force: true,
+      skipPreBackup: true,
+    }));
+  });
+
+  it('non-empty trigger file uses the path inside', async () => {
+    const specific = path.join(manifestsDir, 'backup-manifest-specific.json');
+    fs.writeFileSync(specific, '{}');
+
+    // Relative to backupRoot
+    fs.writeFileSync(
+      path.join(backupRoot, 'RESTORE_ON_INSTALL'),
+      'manifests/backup-manifest-specific.json\n',
+    );
+
+    const result = await tryInstallFromBackup(db);
+    expect(result.ran).toBe(true);
+    expect(result.manifestPath).toBe(specific);
+  });
+
+  it('deletes the trigger file after a successful restore', async () => {
+    const manifest = path.join(manifestsDir, 'backup-manifest-001.json');
+    fs.writeFileSync(manifest, '{}');
+    const triggerPath = path.join(backupRoot, 'RESTORE_ON_INSTALL');
+    fs.writeFileSync(triggerPath, '');
+
+    await tryInstallFromBackup(db);
+    expect(fs.existsSync(triggerPath)).toBe(false);
+  });
+
+  it('leaves the trigger file in place when restore throws', async () => {
+    mockRestore.mockRejectedValueOnce(new Error('restore exploded'));
+    const manifest = path.join(manifestsDir, 'backup-manifest-001.json');
+    fs.writeFileSync(manifest, '{}');
+    const triggerPath = path.join(backupRoot, 'RESTORE_ON_INSTALL');
+    fs.writeFileSync(triggerPath, '');
+
+    const result = await tryInstallFromBackup(db);
+    expect(result.ran).toBe(false);
+    expect(result.error).toMatch(/restore exploded/);
+    expect(fs.existsSync(triggerPath)).toBe(true);
+  });
+
+  it('refuses to run when the install already has events', async () => {
+    // Simulate an install with existing data
+    await db('events').insert({
+      slug: 'existing-event',
+      event_name: 'Existing Event',
+      event_type: 'wedding',
+      event_date: new Date(),
+      host_email: 'host@example.com',
+      admin_email: 'host@example.com',
+      expires_at: new Date(Date.now() + 7 * 24 * 60 * 60 * 1000),
+      share_link: 'existing-event-token',
+      password_hash: 'dummy-hash-for-test',
+      created_at: new Date(),
+    });
+
+    const manifest = path.join(manifestsDir, 'backup-manifest-001.json');
+    fs.writeFileSync(manifest, '{}');
+    fs.writeFileSync(path.join(backupRoot, 'RESTORE_ON_INSTALL'), '');
+
+    const result = await tryInstallFromBackup(db);
+    expect(result.ran).toBe(false);
+    expect(result.error).toMatch(/Database not empty/);
+    expect(mockRestore).not.toHaveBeenCalled();
+
+    // Trigger file should NOT be deleted — admin needs to fix + retry
+    expect(fs.existsSync(path.join(backupRoot, 'RESTORE_ON_INSTALL'))).toBe(true);
+  });
+
+  it('proceeds when INSTALL_FROM_BACKUP_FORCE=true even with existing data', async () => {
+    await db('events').insert({
+      slug: 'existing-event-2',
+      event_name: 'Existing Event 2',
+      event_type: 'wedding',
+      event_date: new Date(),
+      host_email: 'host@example.com',
+      admin_email: 'host@example.com',
+      expires_at: new Date(Date.now() + 7 * 24 * 60 * 60 * 1000),
+      share_link: 'existing-event-2-token',
+      password_hash: 'dummy-hash-for-test-2',
+      created_at: new Date(),
+    });
+
+    const manifest = path.join(manifestsDir, 'backup-manifest-001.json');
+    fs.writeFileSync(manifest, '{}');
+    fs.writeFileSync(path.join(backupRoot, 'RESTORE_ON_INSTALL'), '');
+
+    process.env.INSTALL_FROM_BACKUP_FORCE = 'true';
+    const result = await tryInstallFromBackup(db);
+
+    expect(result.ran).toBe(true);
+    expect(mockRestore).toHaveBeenCalled();
+  });
+});

backend/__tests__/integration/invoiceDunning.test.js

@@ -0,0 +1,115 @@
+/**
+ * Dunning / Mahngebühr logic — the tax-sensitive bits added in the dunning
+ * rework. Covers the fee math (flat / percent), the VAT toggle gating
+ * (incl. the "no-op when the org has no VAT rate" requirement), per-reminder
+ * accumulation (2nd = 1×, 3rd = 2×), invoice immutability (the fee never
+ * changes the issued invoice total), and the 3-reminder cap.
+ *
+ * The Mahnung PDF render is stubbed — PDF rendering (fonts) is flaky in CI and
+ * is verified manually; here we assert the data/immutability behaviour.
+ */
+const { bootCrmDb, seedMinimal } = require('./helpers/crmDb');
+
+// bootCrmDb runs the full core-migration set in beforeAll; under full-suite
+// parallel load on a small CI runner that can exceed the 5s default. Match the
+// other migration-heavy CRM suites (discountLineItems, incomingInvoiceRebill).
+jest.setTimeout(30000);
+
+let db;
+let cleanup;
+let invoiceService;
+let ids;
+
+async function setSetting(key, value) {
+  const { upsertAppSetting } = require('../../src/utils/appSettings');
+  await upsertAppSetting(key, JSON.stringify(value), 'crm');
+}
+
+beforeAll(async () => {
+  ({ db, cleanup } = await bootCrmDb());
+  ids = await seedMinimal(db);
+  try { await db('customer_accounts').where({ id: ids.customerId }).update({ feature_bills: true }); } catch (_) {}
+  invoiceService = require('../../src/services/invoiceService');
+  // Stub the (flaky) PDF render so applyReminder exercises its data path.
+  // eslint-disable-next-line global-require
+  const pdfService = require('../../src/services/pdfService');
+  pdfService.renderInvoiceToBuffer = async () => Buffer.from('%PDF-stub');
+});
+
+afterAll(async () => { await cleanup(); });
+
+describe('dunning fee resolvers', () => {
+  test('flat fee, no VAT', async () => {
+    await setSetting('crm_invoices_late_fee_enabled', true);
+    await setSetting('crm_invoices_late_fee_type', 'flat');
+    await setSetting('crm_invoices_late_fee_minor', 2000);
+    await setSetting('crm_invoices_late_fee_vat_enabled', false);
+    const inv = { total_amount_minor: 100000 };
+    expect(await invoiceService.resolveLateFeeNetMinor(inv)).toBe(2000);
+    expect(await invoiceService.resolveLateFeeVatRate()).toBe(0);
+    expect(await invoiceService.resolvePerReminderFeeMinor(inv)).toBe(2000);
+  });
+
+  test('percent fee = % of the invoice gross', async () => {
+    await setSetting('crm_invoices_late_fee_type', 'percent');
+    await setSetting('crm_invoices_late_fee_percent', 5);
+    expect(await invoiceService.resolveLateFeeNetMinor({ total_amount_minor: 100000 })).toBe(5000);
+  });
+
+  test('VAT toggle applies the org rate, but is a NO-OP when the org has no VAT rate', async () => {
+    await setSetting('crm_invoices_late_fee_type', 'flat');
+    await setSetting('crm_invoices_late_fee_minor', 2000);
+    await setSetting('crm_invoices_late_fee_vat_enabled', true);
+
+    await db('business_profile').where({ id: 1 }).update({ vat_rate_default: 8.1 });
+    expect(await invoiceService.resolveLateFeeVatRate()).toBeCloseTo(8.1);
+    expect(await invoiceService.resolvePerReminderFeeMinor({ total_amount_minor: 0 }))
+      .toBe(2000 + Math.round(2000 * 8.1 / 100)); // net + VAT
+
+    // Org doesn't charge VAT → toggle adds nothing (Mara's requirement).
+    await db('business_profile').where({ id: 1 }).update({ vat_rate_default: 0 });
+    expect(await invoiceService.resolveLateFeeVatRate()).toBe(0);
+    expect(await invoiceService.resolvePerReminderFeeMinor({ total_amount_minor: 0 })).toBe(2000);
+  });
+});
+
+describe('applyReminder — dunning-document model', () => {
+  let invoiceId;
+  let originalTotal;
+
+  beforeAll(async () => {
+    await setSetting('crm_invoices_late_fee_enabled', true);
+    await setSetting('crm_invoices_late_fee_type', 'flat');
+    await setSetting('crm_invoices_late_fee_minor', 2000);
+    await setSetting('crm_invoices_late_fee_vat_enabled', false);
+    const res = await invoiceService.createInvoice({
+      customerAccountId: ids.customerId,
+      currency: 'CHF',
+      vatRate: 0,
+      lineItems: [{ description: 'Service', quantity: 1, unit_price_minor: 100000 }],
+    }, ids.adminId);
+    invoiceId = res.invoiceIds[0];
+    originalTotal = Number((await db('invoices').where({ id: invoiceId }).first()).total_amount_minor);
+  });
+
+  test('level 2 tracks one fee and leaves the invoice total immutable', async () => {
+    const data = await invoiceService.getInvoiceById(invoiceId);
+    await invoiceService.applyReminder(data.invoice, data.lineItems, 2, ids.adminId);
+    const inv = await db('invoices').where({ id: invoiceId }).first();
+    expect(inv.reminder_level).toBe(2);
+    expect(Number(inv.late_fee_amount_minor)).toBe(2000);
+    expect(Number(inv.total_amount_minor)).toBe(originalTotal); // never mutated
+  });
+
+  test('level 3 accumulates the fee to 2×, total still immutable', async () => {
+    const data = await invoiceService.getInvoiceById(invoiceId);
+    await invoiceService.applyReminder(data.invoice, data.lineItems, 3, ids.adminId);
+    const inv = await db('invoices').where({ id: invoiceId }).first();
+    expect(Number(inv.late_fee_amount_minor)).toBe(4000);
+    expect(Number(inv.total_amount_minor)).toBe(originalTotal);
+  });
+
+  test('sendReminder refuses to exceed level 3', async () => {
+    await expect(invoiceService.sendReminder(invoiceId, 4, ids.adminId)).rejects.toThrow();
+  });
+});

backend/__tests__/integration/restoreService.pgBranch.test.js

@@ -0,0 +1,259 @@
+/**
+ * Pins the fix for the PR #596 review blocker.
+ *
+ * **The bug**
+ *
+ *   `preservedMeta` was declared with `let` INSIDE the PostgreSQL
+ *   `else` branch of `performDatabaseRestore`, then read AFTER the
+ *   `else` block closed at the shared replay site (~L1030). On every
+ *   real PG restore:
+ *
+ *     ReferenceError: preservedMeta is not defined
+ *
+ *   would fire — psql had already completed the data restore, but
+ *   the operator-meta replay never ran, the trigger file was left
+ *   in place by `_installFromBackupBoot.js` because the restore
+ *   "failed", and `combined.log` got a loud FAILED line even though
+ *   the data was back. Caught on PR #596 review by the maintainer.
+ *
+ * **Why CI missed it**
+ *
+ *   The integration tests around `performFullRestore` only exercise
+ *   the SQLite branch via `this.dbType === 'sqlite'`. The PG branch
+ *   (~L827-984) requires a real PG connection + real `psql` binary,
+ *   neither of which are in the test environment. So the scope leak
+ *   sat untested until the maintainer ran a real DR cycle.
+ *
+ * **What this test does**
+ *
+ *   Reads the source of `restoreService.js` and asserts the scope
+ *   contract: the `preservedMeta` declaration sits ABOVE the
+ *   SQLite/PG branch split, so the replay block at the bottom of the
+ *   try{} can read it on either branch.
+ *
+ *   Source-inspection is uglier than a runtime test but it has two
+ *   advantages here: (a) it doesn't require a real PG cluster + psql
+ *   binary in CI, (b) it pins the EXACT contract — "the declaration
+ *   must be visible to the replay block" — which is the property
+ *   that broke, more directly than a runtime test would.
+ *
+ *   The follow-up "real-PG integration test in CI" (separate task)
+ *   would replace this with an end-to-end exercise, at which point
+ *   this can be deleted.
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+describe('restoreService — PG branch scope contract (PR #596 review)', () => {
+  let src;
+  let lines;
+
+  beforeAll(() => {
+    src = fs.readFileSync(
+      path.join(__dirname, '..', '..', 'src', 'services', 'restoreService.js'),
+      'utf8',
+    );
+    lines = src.split(/\r?\n/);
+  });
+
+  /** Return the 1-based line number of the FIRST line matching `re`. */
+  function findFirst(re) {
+    const idx = lines.findIndex((l) => re.test(l));
+    return idx >= 0 ? idx + 1 : -1;
+  }
+
+  /** Return the 1-based line number of the LAST line matching `re`. */
+  function findLast(re) {
+    let last = -1;
+    lines.forEach((l, i) => { if (re.test(l)) last = i + 1; });
+    return last;
+  }
+
+  it('preservedMetaSnapshot lives on `this` and is initialised in the constructor', () => {
+    // PR #596 round 3 moved the snapshot from a block-scoped local to
+    // an instance variable so the replay can happen in `restore()`
+    // AFTER post-restore verification — preventing the replay row
+    // from inflating the row-count check.
+    //
+    // Contract:
+    //   1. The constructor initialises `this.preservedMetaSnapshot = []`
+    //   2. The `restore()` entry point resets it per call (no leak
+    //      across consecutive runs in the singleton service instance)
+    //   3. `performDatabaseRestore` assigns to `this.preservedMetaSnapshot`
+    //      inside the PG branch (must run before DROP)
+    //   4. The replay reads `this.preservedMetaSnapshot` — NOT a bare
+    //      `preservedMeta` local — so a future refactor can't
+    //      accidentally drop the snapshot half on the floor again.
+    const constructorInit = lines.some((l) =>
+      /this\.preservedMetaSnapshot\s*=\s*\[\s*\]/.test(l)
+    );
+    expect(constructorInit).toBe(true);
+
+    const assignmentSites = lines.filter((l) =>
+      /this\.preservedMetaSnapshot\s*=\s*(\[\s*\]|await\s+db)/.test(l)
+    );
+    // Constructor init + restore() per-run reset + the PG-branch
+    // assignment from db query. Three writes.
+    expect(assignmentSites.length).toBeGreaterThanOrEqual(3);
+
+    // No stray bare `preservedMeta` local-scoped declaration in
+    // performDatabaseRestore — would indicate someone re-introduced
+    // the round-1 footgun.
+    const dangerousLocalDecl = lines.filter((l) =>
+      /^\s*(let|const)\s+preservedMeta\s*=/.test(l)
+    );
+    expect(dangerousLocalDecl).toEqual([]);
+  });
+
+  it('every .count() result is coerced to Number before comparison', () => {
+    // PR #596 review caught a second PG-only landmine: pg-driver
+    // returns COUNT(*) as a string ("16" not 16) to preserve bigint
+    // precision. The original code compared `result.count !==
+    // expected.rowCount` and every match flagged as a mismatch on PG.
+    //
+    // The fix coerces with `Number(...)` at every comparison +
+    // interpolation site. This test catches a future regression where
+    // a refactor uses `.count` directly in a `===` / `!==` / `>` /
+    // `<` comparison without coercing.
+    //
+    // Heuristic: find every `.count` access in the file and make sure
+    // the line either:
+    //   (a) wraps it in `Number(...)`, or
+    //   (b) is purely an interpolation that already coerced upstream
+    //       (e.g. `validation.warnings.push(`... ${eventCountN} ...`)`
+    //       where eventCountN is the coerced local), or
+    //   (c) is the docstring/comment line (filtered separately).
+    //
+    // We approximate this by listing every `.count` reference site
+    // and asserting that lines doing comparisons (`===`/`!==`/`>`/
+    // `<`/`>=`/`<=`) on a raw `.count` access without `Number(...)`
+    // around it are zero.
+    const dangerousLines = lines
+      .map((l, i) => ({ line: i + 1, text: l }))
+      // Filter to lines that compare a .count result
+      .filter(({ text }) => {
+        // Skip comments
+        if (/^\s*(\/\/|\*)/.test(text)) return false;
+        // Detect a `.count` (followed by `)` for `?.count` or by space/operator)
+        // being directly compared via ===/!==/>/<.
+        // Match the BAD pattern: `<something>.count <op> <something>`
+        // where <op> is === / !== / > / < / >= / <=
+        const bareCountInComparison = /\w+\??\.count\s*(?:!==|===|>=?|<=?)\s+/;
+        // ALLOW if the .count is preceded by `Number(` in the same line
+        const wrappedInNumber = /Number\(\s*\w+\??\.count/;
+        return bareCountInComparison.test(text) && !wrappedInNumber.test(text);
+      });
+
+    expect(dangerousLines).toEqual([]);
+  });
+
+  it('the completed-restore update sets was_successful=true', () => {
+    // Without this, every successful restore ends up with
+    // status='completed', was_successful=false — the dashboard's
+    // "last successful restore" widget then filters out the row +
+    // any future audit query gating on was_successful misses it.
+    // Caught locally + maintainer PR #596 review.
+    //
+    // Contract: the update payload that writes status='completed' on
+    // the SUCCESS branch ALSO includes was_successful: true. We pin
+    // it by source inspection so any future refactor of the success
+    // payload keeps both fields together.
+    // The success-branch update lives AFTER performPostRestoreVerification.
+    // There's also a `status: 'completed'` in the dry-run / early-return
+    // path (failure handling has its own block too) — we want the
+    // SUCCESS-branch one specifically.
+    const verifyLine = findFirst(/performPostRestoreVerification\s*\(/);
+    expect(verifyLine).toBeGreaterThan(0);
+
+    const completedStatusLineIdx = lines
+      .map((l, i) => ({ line: i + 1, text: l }))
+      .find(({ line, text }) =>
+        line > verifyLine && /status:\s*['"]completed['"]/.test(text)
+      );
+    expect(completedStatusLineIdx).toBeDefined();
+
+    // Look in the next ~10 lines for was_successful: true. The actual
+    // payload is small (no nested objects between status and the
+    // closing })), so a fixed-window search is reliable.
+    const window = lines.slice(
+      completedStatusLineIdx.line - 1,
+      completedStatusLineIdx.line + 10,
+    ).join('\n');
+    expect(window).toMatch(/was_successful:\s*true/);
+  });
+
+  it('npm run migrate:safe is invoked after the replay in restore()', () => {
+    // Contract from PR #596 round 4: backups taken on older picpeak
+    // versions must restore COMPLETELY on a newer image — even if new
+    // migrations have been added since the backup was taken. The
+    // restore() flow shells out to `npm run migrate:safe` AFTER the
+    // operator-meta replay so the schema catches up to the running
+    // code WITHIN the restore boundary (not on the next container
+    // restart).
+    //
+    // Contract:
+    //   1. A `migrate:safe` shell-out exists somewhere in restoreService
+    //   2. It sits AFTER the replay drain — verification → replay →
+    //      migrations is the documented order
+    //   3. It does NOT sit inside performDatabaseRestore (must run
+    //      against the reinit'd pool from the parent restore())
+    const migrateLine = findFirst(/['"]migrate:safe['"]/);
+    expect(migrateLine).toBeGreaterThan(0);
+
+    const replayLine = findLast(/this\.preservedMetaSnapshot\.length\s*>\s*0/);
+    expect(replayLine).toBeGreaterThan(0);
+    expect(migrateLine).toBeGreaterThan(replayLine);
+
+    // Must NOT live inside performDatabaseRestore (same scope as the
+    // replay check above).
+    const dbRestoreStart = findFirst(/async\s+performDatabaseRestore\s*\(/);
+    let dbRestoreEnd = -1;
+    for (let i = dbRestoreStart; i < lines.length; i++) {
+      if (/^  \}\s*$/.test(lines[i])) {
+        dbRestoreEnd = i + 1;
+        break;
+      }
+    }
+    expect(migrateLine < dbRestoreStart || migrateLine > dbRestoreEnd).toBe(true);
+  });
+
+  it('the replay site lives in restore() AFTER performPostRestoreVerification', () => {
+    // PR #596 round 3 moved the replay out of performDatabaseRestore
+    // and into the parent restore() method, sequenced AFTER the
+    // post-restore verification. Otherwise the replay's upserted row
+    // count was being flagged as a verification mismatch (e.g.
+    // "expected 190, got 191" because the fresh-install seeded
+    // `restore_allow_force_auto_upgraded` that wasn't in the backup).
+    //
+    // Contract: the line that drains `this.preservedMetaSnapshot`
+    // must come AFTER `performPostRestoreVerification` AND must NOT
+    // sit inside `performDatabaseRestore`.
+    const verificationLine = findFirst(/performPostRestoreVerification\s*\(/);
+    expect(verificationLine).toBeGreaterThan(0);
+
+    const replayLine = findLast(/this\.preservedMetaSnapshot\.length\s*>\s*0/);
+    expect(replayLine).toBeGreaterThan(0);
+    expect(replayLine).toBeGreaterThan(verificationLine);
+
+    // `performDatabaseRestore` must not contain the replay drain.
+    // Find the function bounds + assert no drain line falls inside.
+    const dbRestoreStart = findFirst(/async\s+performDatabaseRestore\s*\(/);
+    expect(dbRestoreStart).toBeGreaterThan(0);
+
+    // Find the closing brace of performDatabaseRestore. Lazy heuristic:
+    // the first `^  \}\s*$` (two-space indent + }) after the function
+    // start. Brittle to indent changes but unambiguous in this codebase.
+    let dbRestoreEnd = -1;
+    for (let i = dbRestoreStart; i < lines.length; i++) {
+      if (/^  \}\s*$/.test(lines[i])) {
+        dbRestoreEnd = i + 1;
+        break;
+      }
+    }
+    expect(dbRestoreEnd).toBeGreaterThan(dbRestoreStart);
+
+    // The replay drain line must be OUTSIDE [dbRestoreStart, dbRestoreEnd].
+    expect(replayLine < dbRestoreStart || replayLine > dbRestoreEnd).toBe(true);
+  });
+});

backend/__tests__/integration/setupService.test.js

@@ -0,0 +1,196 @@
+'use strict';
+
+// First-run bootstrap service. bootCrmDb() must run BEFORE requiring the service
+// so setupService shares this test's db instance (see crmDb.js note).
+process.env.JWT_SECRET = process.env.JWT_SECRET || 'test-secret-at-least-32-characters-long!!';
+
+const fs = require('fs');
+const path = require('path');
+const request = require('supertest');
+const { bootCrmDb, buildRouteApp } = require('./helpers/crmDb');
+
+let db;
+let cleanup;
+let tmpDir;
+let setupService;
+let getAppSetting;
+let upsertAppSetting;
+let app;
+
+const VALID_PW = 'Str0ng-Passw0rd!';
+
+// bootCrmDb MUST run before any require of db.js (directly or transitively via a
+// service/util), or db.js binds to the default path instead of the temp one.
+beforeAll(async () => {
+  ({ db, cleanup, tmpDir } = await bootCrmDb());
+  process.env.DATA_DIR = tmpDir; // isolate the SETUP_TOKEN file to the temp dir
+  setupService = require('../../src/services/setupService');
+  ({ getAppSetting, upsertAppSetting } = require('../../src/utils/appSettings'));
+  app = buildRouteApp('/api/setup', require('../../src/routes/setup'));
+}, 60000);
+
+afterAll(async () => {
+  await cleanup();
+});
+
+beforeEach(async () => {
+  await db('admin_users').del();
+  await db('app_settings').where({ setting_key: 'setup_token' }).del();
+});
+
+describe('setupService (first-run bootstrap)', () => {
+  it('reports needsAdmin while no admin exists', async () => {
+    expect(await setupService.getSetupStatus()).toEqual({ needsAdmin: true, complete: false });
+  });
+
+  it('generates and persists a one-time token while no admin exists', async () => {
+    const token = await setupService.ensureSetupToken();
+    expect(token).toEqual(expect.any(String));
+    expect(token.length).toBeGreaterThan(20);
+    expect(await getAppSetting('setup_token')).toBe(token);
+    // Idempotent — a second call returns the same token, not a fresh one.
+    expect(await setupService.ensureSetupToken()).toBe(token);
+  });
+
+  it('stores the token as valid JSON so the Postgres jsonb column accepts it', async () => {
+    // Regression guard for the SQLite-only miss: a bare token string is rejected
+    // by Postgres jsonb ("invalid input syntax for type json"). The raw column
+    // value must be JSON-parseable and round-trip back to the token.
+    const token = await setupService.ensureSetupToken();
+    const row = await db('app_settings').where({ setting_key: 'setup_token' }).first();
+    expect(() => JSON.parse(row.setting_value)).not.toThrow();
+    expect(JSON.parse(row.setting_value)).toBe(token);
+  });
+
+  it('rejects a wrong token', async () => {
+    await setupService.ensureSetupToken();
+    await expect(
+      setupService.createInitialAdmin({ token: 'nope', email: 'a@b.co', password: VALID_PW })
+    ).rejects.toMatchObject({ statusCode: 400 });
+    expect(await setupService.getSetupStatus()).toEqual({ needsAdmin: true, complete: false });
+  });
+
+  it('rejects a weak password', async () => {
+    const token = await setupService.ensureSetupToken();
+    await expect(
+      setupService.createInitialAdmin({ token, email: 'a@b.co', password: 'weak' })
+    ).rejects.toMatchObject({ statusCode: 400 });
+  });
+
+  it('creates the first admin as super_admin, issues a token, and burns the setup token', async () => {
+    const token = await setupService.ensureSetupToken();
+    const result = await setupService.createInitialAdmin({
+      token, email: 'Owner@Example.com', password: VALID_PW, ip: '203.0.113.7',
+    });
+
+    expect(result.user.email).toBe('owner@example.com'); // normalised
+    expect(result.user.role.name).toBe('super_admin');
+    expect(result.token).toEqual(expect.any(String));
+
+    const row = await db('admin_users').first();
+    const role = await db('roles').where({ name: 'super_admin' }).first();
+    expect(row.role_id).toBe(role.id);
+    expect(row.password_hash).not.toBe(VALID_PW); // hashed
+
+    // One-time: token burned, status now complete.
+    expect(await getAppSetting('setup_token')).toBeFalsy();
+    expect(await setupService.getSetupStatus()).toEqual({ needsAdmin: false, complete: true });
+  });
+
+  it('writes the SETUP_TOKEN file while pending and removes it once setup completes', async () => {
+    const tokenFile = path.join(tmpDir, 'SETUP_TOKEN');
+    const token = await setupService.ensureSetupToken();
+    expect(fs.readFileSync(tokenFile, 'utf8').trim()).toBe(token);
+    await setupService.createInitialAdmin({ token, email: 'owner@example.com', password: VALID_PW });
+    expect(fs.existsSync(tokenFile)).toBe(false); // burned in DB + file removed
+  });
+
+  it('refuses to create a second admin (setup already complete)', async () => {
+    const token = await setupService.ensureSetupToken();
+    await setupService.createInitialAdmin({ token, email: 'first@example.com', password: VALID_PW });
+    await expect(
+      setupService.createInitialAdmin({ token, email: 'second@example.com', password: VALID_PW })
+    ).rejects.toMatchObject({ statusCode: 409 });
+  });
+
+  it('serialises a double-submit — two concurrent valid-token calls create only one admin', async () => {
+    const token = await setupService.ensureSetupToken();
+    const results = await Promise.allSettled([
+      setupService.createInitialAdmin({ token, email: 'a@example.com', password: VALID_PW }),
+      setupService.createInitialAdmin({ token, email: 'b@example.com', password: VALID_PW }),
+    ]);
+    const fulfilled = results.filter((r) => r.status === 'fulfilled');
+    expect(fulfilled).toHaveLength(1); // the atomic token claim lets exactly one win
+    const count = await db('admin_users').count({ c: '*' }).first();
+    expect(Number(count.c)).toBe(1);
+  });
+
+  it('ensureSetupToken clears any stale token once an admin exists', async () => {
+    const token = await setupService.ensureSetupToken();
+    await setupService.createInitialAdmin({ token, email: 'first@example.com', password: VALID_PW });
+    // Simulate a stale token left in settings, then re-run the boot hook.
+    await upsertAppSetting('setup_token', JSON.stringify('stale'), 'string');
+    expect(await setupService.ensureSetupToken()).toBeNull();
+    expect(await getAppSetting('setup_token')).toBeFalsy();
+  });
+});
+
+describe('setup routes', () => {
+  it('GET /api/setup/status reports needsAdmin', async () => {
+    const res = await request(app).get('/api/setup/status');
+    expect(res.status).toBe(200);
+    expect(res.body).toEqual({ needsAdmin: true, complete: false });
+  });
+
+  it('POST /api/setup/verify-token accepts the right token without burning it (200)', async () => {
+    const token = await setupService.ensureSetupToken();
+    const res = await request(app).post('/api/setup/verify-token').send({ token });
+    expect(res.status).toBe(200);
+    expect(res.body).toEqual({ valid: true });
+    // Token is NOT consumed — it still works for the actual create.
+    expect(await getAppSetting('setup_token')).toBe(token);
+  });
+
+  it('POST /api/setup/verify-token rejects a wrong token (400, field token)', async () => {
+    await setupService.ensureSetupToken();
+    const res = await request(app).post('/api/setup/verify-token').send({ token: 'nope' });
+    expect(res.status).toBe(400);
+    expect(res.body.field).toBe('token');
+  });
+
+  it('POST /api/setup/verify-token is closed once an admin exists (409)', async () => {
+    const token = await setupService.ensureSetupToken();
+    await setupService.createInitialAdmin({ token, email: 'first@example.com', password: VALID_PW });
+    const res = await request(app).post('/api/setup/verify-token').send({ token });
+    expect(res.status).toBe(409);
+  });
+
+  it('POST /api/setup/admin rejects a wrong token (400)', async () => {
+    await setupService.ensureSetupToken();
+    const res = await request(app)
+      .post('/api/setup/admin')
+      .send({ token: 'nope', email: 'a@b.co', password: VALID_PW });
+    expect(res.status).toBe(400);
+    expect(await setupService.getSetupStatus()).toMatchObject({ needsAdmin: true });
+  });
+
+  it('POST /api/setup/admin creates the first admin + sets the auth cookie (201)', async () => {
+    const token = await setupService.ensureSetupToken();
+    const res = await request(app)
+      .post('/api/setup/admin')
+      .send({ token, email: 'owner@example.com', password: VALID_PW });
+    expect(res.status).toBe(201);
+    expect(res.body.user.role.name).toBe('super_admin');
+    expect((res.headers['set-cookie'] || []).join(';')).toMatch(/admin_token/);
+    expect(await setupService.getSetupStatus()).toEqual({ needsAdmin: false, complete: true });
+  });
+
+  it('POST /api/setup/admin is closed once an admin exists (409)', async () => {
+    const token = await setupService.ensureSetupToken();
+    await setupService.createInitialAdmin({ token, email: 'first@example.com', password: VALID_PW });
+    const res = await request(app)
+      .post('/api/setup/admin')
+      .send({ token, email: 'second@example.com', password: VALID_PW });
+    expect(res.status).toBe(409);
+  });
+});

backend/__tests__/integration/workflowEngine.test.js

@@ -0,0 +1,661 @@
+/**
+ * Workflow engine — graph execution integration tests.
+ *
+ * Exercises the engine against a real (temp SQLite) DB with migration 142
+ * applied: branching, bounded loops, wait pauses + scheduler-style resume,
+ * gate pauses + confirm/deny resume, dedup idempotency, and step recording.
+ */
+const { bootCrmDb } = require('./helpers/crmDb');
+
+// bootCrmDb runs the full core-migration set in beforeAll; under full-suite
+// parallel load on a small CI runner that can exceed the 5s default. Match the
+// other migration-heavy CRM suites (discountLineItems, incomingInvoiceRebill).
+jest.setTimeout(30000);
+
+let db;
+let cleanup;
+let engine;
+
+async function makeWorkflow({ nodes, edges, trigger = 'test.event', enabled = true }) {
+  const ins = await db('workflows').insert({ name: 'wf', trigger_type: trigger, version: 1, enabled });
+  const workflowId = ins[0];
+  for (const n of nodes) {
+    await db('workflow_nodes').insert({
+      workflow_id: workflowId, version: 1, node_key: n.key, type: n.type,
+      config: JSON.stringify(n.config || {}),
+    });
+  }
+  for (const e of edges) {
+    await db('workflow_edges').insert({
+      workflow_id: workflowId, version: 1, from_node: e.from, from_handle: e.handle || null, to_node: e.to,
+      loop_back: e.loopBack || false,
+    });
+  }
+  return workflowId;
+}
+
+beforeAll(async () => {
+  ({ db, cleanup } = await bootCrmDb());
+  // Engine requires the singleton db — require AFTER bootCrmDb wired the test path.
+  engine = require('../../src/services/workflows');
+  // Enable the workflows flag so emitWorkflowEvent doesn't fail closed.
+  await db('feature_flags').insert({ key: 'workflows', value: true });
+});
+
+afterAll(async () => { await cleanup(); });
+
+describe('workflow engine', () => {
+  test('condition + bounded loop + wait pauses, resumes to completion', async () => {
+    // trigger → set paid=false → condition(paid?) --no--> loop(max2)
+    //   loop --loop--> reminder(noop) → wait → (back to condition)
+    //   loop --exit--> lateFee(noop) → end
+    //   condition --yes--> lateFee (paid path, not taken here)
+    const wfId = await makeWorkflow({
+      nodes: [
+        { key: 'n1', type: 'trigger' },
+        { key: 'n2', type: 'action', config: { action: 'set_context', set: { paid: false } } },
+        { key: 'n3', type: 'condition', config: { condition: 'expr', field: 'paid', op: 'truthy' } },
+        { key: 'n4', type: 'loop', config: { maxIterations: 2 } },
+        { key: 'n5', type: 'action', config: { action: 'noop' } },
+        { key: 'n6', type: 'wait', config: { delayMinutes: 0 } },
+        { key: 'n7', type: 'action', config: { action: 'noop' } },
+      ],
+      edges: [
+        { from: 'n1', to: 'n2' },
+        { from: 'n2', to: 'n3' },
+        { from: 'n3', handle: 'no', to: 'n4' },
+        { from: 'n3', handle: 'yes', to: 'n7' },
+        { from: 'n4', handle: 'loop', to: 'n5' },
+        { from: 'n4', handle: 'exit', to: 'n7' },
+        { from: 'n5', to: 'n6' },
+        { from: 'n6', to: 'n3', loopBack: true },
+      ],
+    });
+
+    const runIds = await engine.emitWorkflowEvent('test.event', { entityType: 'invoice', entityId: 1 });
+    expect(runIds.length).toBe(1);
+    const runId = runIds[0];
+
+    let run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('waiting');     // paused at first wait (loop iter 1)
+    expect(run.current_node).toBe('n6');
+
+    await engine.resumeRun(runId);
+    run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('waiting');     // paused again (loop iter 2)
+
+    await engine.resumeRun(runId);
+    run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('done');        // loop exhausted → exit → end
+
+    const ctx = JSON.parse(run.context);
+    expect(ctx.vars.__loop_n4).toBe(3);     // counter incremented past the cap
+    void wfId;
+
+    const steps = await db('workflow_run_steps').where({ run_id: runId });
+    expect(steps.length).toBeGreaterThan(0);
+  });
+
+  test('emit is idempotent on dedup_key', async () => {
+    await makeWorkflow({
+      trigger: 'dedup.event',
+      nodes: [{ key: 'n1', type: 'trigger' }, { key: 'n2', type: 'action', config: { action: 'noop' } }],
+      edges: [{ from: 'n1', to: 'n2' }],
+    });
+    const first = await engine.emitWorkflowEvent('dedup.event', { entityType: 'x', entityId: 9 });
+    const second = await engine.emitWorkflowEvent('dedup.event', { entityType: 'x', entityId: 9 });
+    expect(first.length).toBe(1);
+    expect(second.length).toBe(0); // same entity → no duplicate run
+  });
+
+  test('gate pauses and resumes via the confirm edge', async () => {
+    const wfId = await makeWorkflow({
+      trigger: 'gate.event',
+      nodes: [
+        { key: 'g1', type: 'trigger' },
+        { key: 'g2', type: 'gate', config: { type: 'payment_confirm' } },
+        { key: 'g3', type: 'action', config: { action: 'noop' } },
+        { key: 'g4', type: 'action', config: { action: 'noop' } },
+      ],
+      edges: [
+        { from: 'g1', to: 'g2' },
+        { from: 'g2', handle: 'confirm', to: 'g3' },
+        { from: 'g2', handle: 'deny', to: 'g4' },
+      ],
+    });
+    // create + start a run directly
+    await db('workflow_runs').insert({
+      workflow_id: wfId, version: 1, trigger_event: 'gate.event', status: 'pending',
+      context: JSON.stringify({ vars: {} }), dedup_key: 'gate-test',
+    });
+    const run0 = await db('workflow_runs').where({ dedup_key: 'gate-test' }).first();
+    await engine.startRun(run0.id);
+
+    let run = await db('workflow_runs').where({ id: run0.id }).first();
+    expect(run.status).toBe('waiting');
+    expect(run.current_node).toBe('g2');
+
+    await engine.resumeRun(run0.id, { decisionHandle: 'confirm' });
+    run = await db('workflow_runs').where({ id: run0.id }).first();
+    expect(run.status).toBe('done');
+  });
+
+  test('runDueWaits resumes only elapsed wait nodes', async () => {
+    await makeWorkflow({
+      trigger: 'wait.event',
+      nodes: [
+        { key: 'w1', type: 'trigger' },
+        { key: 'w2', type: 'wait', config: { delayMinutes: 60 } },
+        { key: 'w3', type: 'action', config: { action: 'noop' } },
+      ],
+      edges: [{ from: 'w1', to: 'w2' }, { from: 'w2', to: 'w3' }],
+    });
+    const runIds = await engine.emitWorkflowEvent('wait.event', { entityType: 'e', entityId: 7 });
+    const runId = runIds[0];
+    let run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('waiting');
+
+    expect(await engine.runDueWaits()).toBe(0); // wake_at ~60min out → not due
+
+    await db('workflow_runs').where({ id: runId }).update({ wake_at: new Date(Date.now() - 1000).toISOString() });
+    const resumed = await engine.runDueWaits();
+    expect(resumed).toBeGreaterThanOrEqual(1);
+    run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('done');
+  });
+
+  test('send_email queues a customer mail with business-hours routing', async () => {
+    await makeWorkflow({
+      trigger: 'mail.event',
+      nodes: [
+        { key: 'm1', type: 'trigger' },
+        { key: 'm2', type: 'action', config: { action: 'send_email', recipientClass: 'customer', emailType: 'workflow_test' } },
+      ],
+      edges: [{ from: 'm1', to: 'm2' }],
+    });
+    const runIds = await engine.emitWorkflowEvent('mail.event', {
+      entityType: 'invoice', entityId: 3, payload: { customerEmail: 'cust@example.com' },
+    });
+    const run = await db('workflow_runs').where({ id: runIds[0] }).first();
+    expect(run.status).toBe('done');
+    const queued = await db('email_queue').where({ recipient_email: 'cust@example.com' }).first();
+    expect(queued).toBeTruthy();
+    const step = await db('workflow_run_steps').where({ run_id: runIds[0], node_key: 'm2' }).first();
+    expect(JSON.parse(step.result).respectBusinessHours).toBe(true);
+  });
+
+  test('invoice_paid condition reads the entity', async () => {
+    const registry = require('../../src/services/workflows/registry');
+    const cond = registry.getCondition('invoice_paid');
+    const makeCtx = (row) => ({ run: { entity_id: 1 }, db: () => ({ where: () => ({ first: async () => row }) }) });
+    expect(await cond(makeCtx({ paid_at: '2026-01-01', status: 'sent' }))).toBe(true);
+    expect(await cond(makeCtx({ paid_at: null, status: 'paid' }))).toBe(true);
+    expect(await cond(makeCtx({ paid_at: null, status: 'sent', paid_amount_minor: 0, total_amount_minor: 1000 }))).toBe(false);
+  });
+
+  test('gate creates a pending approval + admin email, token confirm resumes the run', async () => {
+    await makeWorkflow({
+      trigger: 'approval.event',
+      nodes: [
+        { key: 'a1', type: 'trigger' },
+        { key: 'a2', type: 'gate', config: { type: 'payment_confirm', prompt: 'No payment yet?' } },
+        { key: 'a3', type: 'action', config: { action: 'noop' } }, // confirm path
+        { key: 'a4', type: 'action', config: { action: 'noop' } }, // deny path
+      ],
+      edges: [
+        { from: 'a1', to: 'a2' },
+        { from: 'a2', handle: 'confirm', to: 'a3' },
+        { from: 'a2', handle: 'deny', to: 'a4' },
+      ],
+    });
+    const runIds = await engine.emitWorkflowEvent('approval.event', {
+      entityType: 'invoice', entityId: 42, payload: { adminEmail: 'admin@example.com' },
+    });
+    const runId = runIds[0];
+
+    let run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('waiting');
+    expect(run.current_node).toBe('a2');
+
+    const approval = await db('workflow_approvals').where({ run_id: runId }).first();
+    expect(approval).toBeTruthy();
+    expect(approval.status).toBe('pending');
+
+    const adminMail = await db('email_queue').where({ recipient_email: 'admin@example.com' }).first();
+    expect(adminMail).toBeTruthy();
+
+    // Extract the raw token from the emailed confirm link and act on it.
+    const data = JSON.parse(adminMail.email_data);
+    const rawToken = data.confirm_url.split('/').slice(-2)[0];
+    const res = await engine.actByToken(rawToken, 'confirm');
+    expect(res.ok).toBe(true);
+    expect(res.status).toBe('confirmed');
+
+    run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('done');
+
+    // A second click is idempotent (already recorded).
+    const again = await engine.actByToken(rawToken, 'confirm');
+    expect(again.already).toBe(true);
+  });
+
+  test('seeds the invoice-dunning built-in as the delegation graph (v6, disabled for first beta)', async () => {
+    const { seedBuiltinWorkflowsAtBoot, DUNNING_KEY } = require('../../src/services/_workflowSeedBoot');
+    const noopLogger = { info() {}, warn() {} };
+    await seedBuiltinWorkflowsAtBoot(db, noopLogger);
+
+    const wf = await db('workflows').where({ builtin_key: DUNNING_KEY }).first();
+    expect(wf).toBeTruthy();
+    expect(!!wf.is_builtin).toBe(true);
+    expect(!!wf.enabled).toBe(false); // first beta: ships disabled; legacy ladder runs until enabled
+    expect(JSON.parse(wf.trigger_config).seedVersion).toBe(6);
+
+    const nodes = await db('workflow_nodes').where({ workflow_id: wf.id, version: wf.version });
+    expect(nodes.filter((n) => n.type === 'trigger')).toHaveLength(1);
+    expect(nodes.some((n) => n.type === 'gate')).toBe(false); // payment-check email IS the gate
+    expect(nodes.some((n) => JSON.parse(n.config || '{}').action === 'queue_payment_check')).toBe(true);
+    expect(nodes.some((n) => JSON.parse(n.config || '{}').action === 'escalate_to_collections')).toBe(true);
+
+    await seedBuiltinWorkflowsAtBoot(db, noopLogger); // idempotent at current seed version
+    const all = await db('workflows').where({ builtin_key: DUNNING_KEY });
+    expect(all.length).toBe(1);
+  });
+
+  test('re-seeds a stale built-in on version bump, but never an admin-owned one', async () => {
+    const { seedBuiltinWorkflowsAtBoot, DUNNING_KEY } = require('../../src/services/_workflowSeedBoot');
+    const noopLogger = { info() {}, warn() {} };
+
+    // Simulate an older, never-touched seed (v1, with a legacy gate node).
+    const wf = await db('workflows').where({ builtin_key: DUNNING_KEY }).first();
+    await db('workflows').where({ id: wf.id }).update({ enabled: true, admin_toggled_at: null, trigger_config: JSON.stringify({ seedVersion: 1 }) });
+    await db('workflow_nodes').insert({ workflow_id: wf.id, version: wf.version, node_key: 'legacyGate', type: 'gate', config: '{}', pos_x: 0, pos_y: 0 });
+
+    await seedBuiltinWorkflowsAtBoot(db, noopLogger);
+    const reseeded = await db('workflows').where({ id: wf.id }).first();
+    expect(reseeded.version).toBe(wf.version + 1); // bumped
+    expect(JSON.parse(reseeded.trigger_config).seedVersion).toBe(6);
+    expect(!!reseeded.enabled).toBe(false); // seed default re-applied (not admin-owned → flips enabled→disabled)
+    const newNodes = await db('workflow_nodes').where({ workflow_id: wf.id, version: reseeded.version });
+    expect(newNodes.some((n) => n.type === 'gate')).toBe(false); // legacy graph replaced
+
+    // Admin-owned (admin_toggled_at set) + stale → must NOT be touched.
+    await db('workflows').where({ id: wf.id }).update({ enabled: true, admin_toggled_at: new Date().toISOString(), trigger_config: JSON.stringify({ seedVersion: 1 }) });
+    const before = await db('workflows').where({ id: wf.id }).first();
+    await seedBuiltinWorkflowsAtBoot(db, noopLogger);
+    const after = await db('workflows').where({ id: wf.id }).first();
+    expect(after.version).toBe(before.version); // unchanged
+    expect(!!after.enabled).toBe(true); // admin's choice preserved
+  });
+
+  test('seeds the gallery, pre-event + booking built-ins (all disabled for first beta)', async () => {
+    const { seedBuiltinWorkflowsAtBoot } = require('../../src/services/_workflowSeedBoot');
+    await seedBuiltinWorkflowsAtBoot(db, { info() {}, warn() {} });
+
+    // First beta: cutover flows ship DISABLED (legacy paths run until enabled);
+    // they delegate to the proven send functions once turned on.
+    const expiring = await db('workflows').where({ builtin_key: 'gallery_expiring' }).first();
+    expect(expiring).toBeTruthy();
+    expect(!!expiring.enabled).toBe(false);
+    expect(expiring.trigger_type).toBe('gallery.expiring');
+    const expiringNodes = await db('workflow_nodes').where({ workflow_id: expiring.id, version: expiring.version });
+    expect(expiringNodes.some((n) => JSON.parse(n.config || '{}').action === 'notify_gallery_expiring')).toBe(true);
+
+    const expired = await db('workflows').where({ builtin_key: 'gallery_expired' }).first();
+    expect(expired).toBeTruthy();
+    expect(!!expired.enabled).toBe(false);
+    expect(expired.trigger_type).toBe('gallery.expired');
+    const expiredNodes = await db('workflow_nodes').where({ workflow_id: expired.id, version: expired.version });
+    expect(expiredNodes.some((n) => JSON.parse(n.config || '{}').action === 'notify_gallery_expired')).toBe(true);
+
+    // Invoice-only booking variant (quote → invoice, no gallery).
+    const invoiceOnly = await db('workflows').where({ builtin_key: 'booking_invoice_only' }).first();
+    expect(invoiceOnly).toBeTruthy();
+    expect(!!invoiceOnly.enabled).toBe(false);
+    expect(invoiceOnly.trigger_type).toBe('quote.accepted');
+    const ioNodes = await db('workflow_nodes').where({ workflow_id: invoiceOnly.id, version: invoiceOnly.version });
+    expect(ioNodes.some((n) => n.type === 'wait')).toBe(false); // no event wait — sends on approval
+    expect(ioNodes.some((n) => JSON.parse(n.config || '{}').action === 'prepare_event')).toBe(false); // no gallery
+
+    const bookingFull = await db('workflows').where({ builtin_key: 'booking_full' }).first();
+    expect(bookingFull).toBeTruthy();
+    expect(!!bookingFull.enabled).toBe(false); // illustrative/stub — stays disabled
+    expect(bookingFull.trigger_type).toBe('quote.accepted');
+    const fullNodes = await db('workflow_nodes').where({ workflow_id: bookingFull.id, version: bookingFull.version });
+    expect(fullNodes.some((n) => JSON.parse(n.config || '{}').action === 'prepare_contract')).toBe(true);
+    // Admin review gate guards BOTH document sends (adjust line items, then OK).
+    const fullGateKeys = fullNodes.filter((n) => n.type === 'gate').map((n) => n.node_key);
+    expect(fullGateKeys).toEqual(expect.arrayContaining(['reviewContract', 'reviewInvoice']));
+    const fullEdges = await db('workflow_edges').where({ workflow_id: bookingFull.id, version: bookingFull.version });
+    // reviewContract --confirm--> sendContract. The invoice is prepared + approved
+    // EARLY; reviewInvoice --confirm--> waitEvent, and the wait --> sendInvoice, so
+    // dispatch is held until the event date after the admin's early OK.
+    expect(fullEdges.some((e) => e.from_node === 'reviewContract' && e.from_handle === 'confirm' && e.to_node === 'sendContract')).toBe(true);
+    expect(fullEdges.some((e) => e.from_node === 'reviewInvoice' && e.from_handle === 'confirm' && e.to_node === 'waitEvent')).toBe(true);
+    expect(fullEdges.some((e) => e.from_node === 'waitEvent' && e.to_node === 'sendInvoice')).toBe(true);
+
+    const bookingSimple = await db('workflows').where({ builtin_key: 'booking_simple' }).first();
+    expect(bookingSimple).toBeTruthy();
+    expect(bookingSimple.trigger_type).toBe('quote.accepted');
+    const simpleEdges = await db('workflow_edges').where({ workflow_id: bookingSimple.id, version: bookingSimple.version });
+    expect(simpleEdges.some((e) => e.from_node === 'reviewInvoice' && e.from_handle === 'confirm' && e.to_node === 'waitEvent')).toBe(true);
+    expect(simpleEdges.some((e) => e.from_node === 'waitEvent' && e.to_node === 'sendInvoice')).toBe(true);
+
+    const preEvent = await db('workflows').where({ builtin_key: 'pre_event_email' }).first();
+    expect(preEvent).toBeTruthy();
+    expect(!!preEvent.enabled).toBe(false); // first beta: ships disabled
+    expect(preEvent.trigger_type).toBe('event.date_approaching');
+    expect(JSON.parse(preEvent.trigger_config).daysBefore).toBe(2); // default when global setting unset
+    const preNodes = await db('workflow_nodes').where({ workflow_id: preEvent.id, version: preEvent.version });
+    expect(preNodes.some((n) => JSON.parse(n.config || '{}').action === 'notify_pre_event')).toBe(true);
+  });
+
+  test('emitDueEventReminders starts a run for an event inside the lead window', async () => {
+    const wfId = await makeWorkflow({
+      trigger: 'event.date_approaching',
+      enabled: true,
+      nodes: [{ key: 'pe1', type: 'trigger' }, { key: 'pe2', type: 'action', config: { action: 'noop' } }],
+      edges: [{ from: 'pe1', to: 'pe2' }],
+    });
+    // Park the workflow's trigger window at 5 days so our event (2 days out) is in range.
+    await db('workflows').where({ id: wfId }).update({ trigger_config: JSON.stringify({ daysBefore: 5 }) });
+
+    const inWindow = new Date(Date.now() + 2 * 86400000).toISOString().slice(0, 10);
+    const tooFar = new Date(Date.now() + 30 * 86400000).toISOString().slice(0, 10);
+    const farFuture = new Date(Date.now() + 365 * 86400000).toISOString();
+    const evt = { event_type: 'wedding', password_hash: 'x', expires_at: farFuture, is_active: true, is_archived: false, customer_email: 'c@x.test' };
+    await db('events').insert({ ...evt, slug: 'pe-soon', share_link: 'pe-soon', event_name: 'Soon', event_date: inWindow });
+    await db('events').insert({ ...evt, slug: 'pe-far', share_link: 'pe-far', event_name: 'Far', event_date: tooFar });
+
+    const emitted = await engine.emitDueEventReminders();
+    expect(emitted).toBeGreaterThanOrEqual(1);
+
+    const runs = await db('workflow_runs').where({ workflow_id: wfId, entity_type: 'event' });
+    expect(runs.length).toBe(1); // only the in-window event, not the far one
+
+    // Idempotent: a second pass dedups (no duplicate run for the same event).
+    await engine.emitDueEventReminders();
+    const runs2 = await db('workflow_runs').where({ workflow_id: wfId, entity_type: 'event' });
+    expect(runs2.length).toBe(1);
+  });
+
+  test('notify_pre_event / sendReminderForEvent sends to an event with a direct email (no CRM account)', async () => {
+    // Regression: the reminder query used events.customer_account_id, which does
+    // not exist — so an event with only customer_email/host_email got no mail.
+    const farFuture = new Date(Date.now() + 365 * 86400000).toISOString();
+    await db('events').insert({
+      event_type: 'wedding', password_hash: 'x', expires_at: farFuture,
+      is_active: true, is_archived: false,
+      slug: 'rem-direct', share_link: 'rem-direct', event_name: 'Direct',
+      event_date: new Date(Date.now() + 2 * 86400000).toISOString().slice(0, 10),
+      customer_email: 'direct@x.test', // event-level email, NOT a customer_account
+    });
+    const ev = await db('events').where({ slug: 'rem-direct' }).first();
+
+    const res = await require('../../src/services/eventReminderService').sendReminderForEvent(ev.id);
+    expect(res.sent).toBe(1);
+    const mail = await db('email_queue').where({ event_id: ev.id }).first();
+    expect(mail).toBeTruthy();
+    expect(mail.recipient_email).toBe('direct@x.test');
+    // Idempotent: sent_at stamped → a second call is a no-op.
+    const again = await require('../../src/services/eventReminderService').sendReminderForEvent(ev.id);
+    expect(again.sent).toBe(0);
+    expect(again.reason).toBe('already_sent');
+  });
+
+  test('reminder template resolves per event type within the chosen group, else group default', async () => {
+    const { _internal } = require('../../src/services/eventReminderService');
+    // Per-type template exists within a custom group → used.
+    await db('email_templates').insert({ template_key: 'promo_wedding' });
+    expect(await _internal.resolveTemplateKey('wedding', 'promo')).toBe('promo_wedding');
+    // A type with no authored template (in any group) → the group's default.
+    expect(await _internal.resolveTemplateKey('zzznotype', 'promo')).toBe('promo_default');
+    // Blank group → the default event_reminder group.
+    expect(await _internal.resolveTemplateKey('zzznotype')).toBe('event_reminder_default');
+    // Trailing underscore on the group is tolerated.
+    expect(await _internal.resolveTemplateKey('zzznotype', 'promo_')).toBe('promo_default');
+  });
+
+  test('pre-event payload passes the RAW event_date (processor formats it — no "Invalid Date")', async () => {
+    const { _internal } = require('../../src/services/eventReminderService');
+    const p = _internal.composePayload({
+      event: { id: 1, event_name: 'X', event_date: '2026-06-25', customer_name: 'A' },
+      recipientEmail: 'a@x.test', daysBefore: 2, businessName: 'Biz',
+    });
+    expect(p.event_date).toBe('2026-06-25'); // raw, not pre-formatted DD.MM.YYYY
+    expect(p.event_date).not.toMatch(/invalid/i);
+  });
+
+  test('webhook action enqueues a delivery for a configured subscription (full pipeline)', async () => {
+    const webhook = engine.registry.getAction('webhook');
+    expect(typeof webhook).toBe('function'); // registered — no longer a silent no-op
+    const ctx = (config, vars = {}) => ({
+      run: { id: 1, workflow_id: 1, version: 1, trigger_event: 'invoice.sent', entity_type: 'invoice', entity_id: 5 },
+      node: { config }, vars, db, logger: { warn() {} },
+    });
+    // No webhook selected → observable skip, not a crash.
+    expect(await webhook(ctx({}))).toMatchObject({ skipped: true });
+
+    // A configured, active webhook subscription.
+    const [adminId] = await db('admin_users').insert({ username: 'wfhook', email: 'wf@x.test', password_hash: 'x' });
+    const [whId] = await db('webhooks').insert({
+      name: 'Flow hook', url: 'https://example.com/hook', secret: 'whsec_test',
+      events: JSON.stringify([]), active: true, created_by: adminId,
+    });
+
+    // Dry run does not enqueue.
+    expect(await webhook(ctx({ webhookId: whId }, { __dryRun: true }))).toMatchObject({ dryRun: true, would: 'webhook' });
+    expect(await db('webhook_deliveries').where({ webhook_id: whId }).count('id as c').first()).toMatchObject({ c: 0 });
+
+    // Real run → a pending delivery is enqueued for the worker (which does the
+    // signing + SSRF re-validation + retries).
+    const res = await webhook(ctx({ webhookId: whId }));
+    expect(res.webhook_enqueued).toBe(whId);
+    const del = await db('webhook_deliveries').where({ webhook_id: whId }).first();
+    expect(del).toBeTruthy();
+    expect(del.status).toBe('pending');
+    expect(del.event_type).toBe('workflow.invoice.sent');
+
+    // Inactive / missing subscription → skip.
+    await db('webhooks').where({ id: whId }).update({ active: false });
+    expect((await webhook(ctx({ webhookId: whId }))).skipped).toBe(true);
+  });
+
+  test('pre-event falls back to the assigned customer account when the event has no inline email', async () => {
+    const eventReminderService = require('../../src/services/eventReminderService');
+    const farFuture = new Date(Date.now() + 365 * 86400000).toISOString();
+    const [custId] = await db('customer_accounts').insert({
+      email: 'assigned@x.test', preferred_language: 'en', is_active: true, created_at: new Date(),
+    });
+    // Event with NO inline customer_email / host_email.
+    await db('events').insert({
+      event_type: 'wedding', password_hash: 'x', expires_at: farFuture, is_active: true, is_archived: false,
+      slug: 'rem-assigned', share_link: 'rem-assigned', event_name: 'Assigned',
+      event_date: new Date(Date.now() + 2 * 86400000).toISOString().slice(0, 10),
+    });
+    const ev = await db('events').where({ slug: 'rem-assigned' }).first();
+    await db('event_customer_assignments').insert({ event_id: ev.id, customer_account_id: custId, assigned_at: new Date() });
+
+    const res = await eventReminderService.sendReminderForEvent(ev.id);
+    expect(res.sent).toBe(1);
+    const mail = await db('email_queue').where({ recipient_email: 'assigned@x.test' }).first();
+    expect(mail).toBeTruthy();
+    // Queued WITHOUT event_id so the resolver uses the customer's preferred_language.
+    expect(mail.event_id == null).toBe(true);
+  });
+
+  test('isBuiltinFlowActive reflects the built-in ENABLED state (enabled-based mutex)', async () => {
+    const { seedBuiltinWorkflowsAtBoot } = require('../../src/services/_workflowSeedBoot');
+    await seedBuiltinWorkflowsAtBoot(db, { info() {}, warn() {} });
+    // All built-ins ship disabled → inactive until the admin enables one.
+    expect(await engine.isBuiltinFlowActive('gallery_expiring')).toBe(false);
+    expect(await engine.isBuiltinFlowActive('does_not_exist')).toBe(false);
+    // Enable one → now active.
+    await db('workflows').where({ builtin_key: 'gallery_expiring' }).update({ enabled: true });
+    expect(await engine.isBuiltinFlowActive('gallery_expiring')).toBe(true);
+    await db('workflows').where({ builtin_key: 'gallery_expiring' }).update({ enabled: false }); // restore
+  });
+
+  test('legacy event-reminder pass stands down ONLY when the pre_event_email flow is enabled', async () => {
+    const { seedBuiltinWorkflowsAtBoot } = require('../../src/services/_workflowSeedBoot');
+    await seedBuiltinWorkflowsAtBoot(db, { info() {}, warn() {} }); // pre_event_email seeded DISABLED
+    // crm_event_reminders_enabled must be on to reach the mutex guard.
+    await db('app_settings')
+      .insert({ setting_key: 'crm_event_reminders_enabled', setting_value: JSON.stringify(true), setting_type: 'boolean' })
+      .onConflict('setting_key').merge();
+    const eventReminderService = require('../../src/services/eventReminderService');
+
+    // Flow disabled → guard does NOT fire (legacy pass owns reminders).
+    expect(await engine.isBuiltinFlowActive('pre_event_email')).toBe(false);
+
+    // Flow enabled → the pass stands down before doing any work (byWorkflow).
+    await db('workflows').where({ builtin_key: 'pre_event_email' }).update({ enabled: true });
+    const after = await eventReminderService.runEventReminderPass();
+    expect(after.byWorkflow).toBe(true);
+    expect(after.sent).toBe(0);
+    await db('workflows').where({ builtin_key: 'pre_event_email' }).update({ enabled: false }); // restore
+  });
+
+  test('targetWorkflowId runs only the selected flow, not every matching one', async () => {
+    // Two enabled flows on the same trigger — the quote picks one.
+    const chosen = await makeWorkflow({
+      trigger: 'pick.event', enabled: true,
+      nodes: [{ key: 'c1', type: 'trigger' }, { key: 'c2', type: 'action', config: { action: 'noop' } }],
+      edges: [{ from: 'c1', to: 'c2' }],
+    });
+    const other = await makeWorkflow({
+      trigger: 'pick.event', enabled: true,
+      nodes: [{ key: 'o1', type: 'trigger' }, { key: 'o2', type: 'action', config: { action: 'noop' } }],
+      edges: [{ from: 'o1', to: 'o2' }],
+    });
+
+    const runIds = await engine.emitWorkflowEvent('pick.event', { entityType: 'quote', entityId: 99, targetWorkflowId: chosen });
+    expect(runIds.length).toBe(1);
+    const chosenRuns = await db('workflow_runs').where({ workflow_id: chosen, entity_id: 99 });
+    const otherRuns = await db('workflow_runs').where({ workflow_id: other, entity_id: 99 });
+    expect(chosenRuns.length).toBe(1); // only the selected flow ran
+    expect(otherRuns.length).toBe(0);  // the other matching flow did NOT
+  });
+
+  test('gate decision with no matching edge FAILS the run (not a silent done)', async () => {
+    // Gate has a confirm edge but the deny edge was lost (e.g. a bad import).
+    const wfId = await makeWorkflow({
+      trigger: 'noedge.event', enabled: true,
+      nodes: [
+        { key: 'g0', type: 'trigger' },
+        { key: 'g1', type: 'gate', config: {} },
+        { key: 'g2', type: 'action', config: { action: 'noop' } },
+      ],
+      edges: [
+        { from: 'g0', to: 'g1' },
+        { from: 'g1', handle: 'confirm', to: 'g2' }, // no deny edge
+      ],
+    });
+    const [runId] = await engine.emitWorkflowEvent('noedge.event', { entityType: 'x', entityId: 1 });
+    const approval = await db('workflow_approvals').where({ run_id: runId, status: 'pending' }).first();
+    await engine.actById(approval.id, 'deny'); // deny has no edge
+    const run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('failed'); // loud failure, not a green 'done'
+    expect(run.error).toMatch(/deny.*no matching edge/i);
+  });
+
+  test('admin confirms a gate early; the following wait holds dispatch until its date', async () => {
+    // The booking pattern: prepare → REVIEW GATE → WAIT(event date) → send. The
+    // admin can approve at the gate whenever; the run then parks at the wait and
+    // the scheduler dispatches when the date arrives.
+    const wfId = await makeWorkflow({
+      trigger: 'gatewait.event',
+      nodes: [
+        { key: 'g0', type: 'trigger' },
+        { key: 'g1', type: 'gate', config: { prompt: 'Approve invoice?' } },
+        { key: 'g2', type: 'wait', config: { delayDays: 5 } },
+        { key: 'g3', type: 'action', config: { action: 'noop' } },
+      ],
+      edges: [
+        { from: 'g0', to: 'g1' },
+        { from: 'g1', handle: 'confirm', to: 'g2' },
+        { from: 'g2', to: 'g3' },
+      ],
+    });
+    const [runId] = await engine.emitWorkflowEvent('gatewait.event', { entityType: 'invoice', entityId: 7 });
+    let run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('waiting');
+    expect(run.current_node).toBe('g1'); // parked at the review gate
+
+    // Admin confirms EARLY (before the wait date).
+    const approval = await db('workflow_approvals').where({ run_id: runId, status: 'pending' }).first();
+    await engine.actById(approval.id, 'confirm');
+    run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('waiting');
+    expect(run.current_node).toBe('g2'); // now holding at the wait, not yet dispatched
+
+    // Date arrives → scheduler dispatches.
+    await db('workflow_runs').where({ id: runId }).update({ wake_at: new Date(Date.now() - 1000).toISOString() });
+    await engine.runDueWaits();
+    run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('done');
+  });
+
+  test('recoverStaleRuns resumes a run orphaned mid-flow (crash recovery)', async () => {
+    const wfId = await makeWorkflow({
+      trigger: 'recover.event',
+      nodes: [{ key: 'r1', type: 'trigger' }, { key: 'r2', type: 'action', config: { action: 'noop' } }],
+      edges: [{ from: 'r1', to: 'r2' }],
+    });
+    // Simulate a run left 'running' at r2 with a stale heartbeat (crash mid-flow).
+    await db('workflow_runs').insert({
+      workflow_id: wfId, version: 1, trigger_event: 'recover.event', status: 'running', current_node: 'r2',
+      context: JSON.stringify({ vars: {} }), dedup_key: 'recover-1',
+      updated_at: new Date(Date.now() - 3600000).toISOString(),
+    });
+    const run0 = await db('workflow_runs').where({ dedup_key: 'recover-1' }).first();
+    const n = await engine.recoverStaleRuns({ staleMs: 1000 });
+    expect(n).toBeGreaterThanOrEqual(1);
+    const run = await db('workflow_runs').where({ id: run0.id }).first();
+    expect(run.status).toBe('done');
+  });
+
+  test('recoverStaleRuns abandons a crash-looping run after the attempts cap', async () => {
+    const wfId = await makeWorkflow({
+      trigger: 'crashloop.event',
+      nodes: [{ key: 'c1', type: 'trigger' }, { key: 'c2', type: 'action', config: { action: 'noop' } }],
+      edges: [{ from: 'c1', to: 'c2' }],
+    });
+    await db('workflow_runs').insert({
+      workflow_id: wfId, version: 1, trigger_event: 'crashloop.event', status: 'running', current_node: 'c2',
+      context: JSON.stringify({ vars: {} }), dedup_key: 'crash-1', attempts: 5,
+      updated_at: new Date(Date.now() - 3600000).toISOString(),
+    });
+    const run0 = await db('workflow_runs').where({ dedup_key: 'crash-1' }).first();
+    await engine.recoverStaleRuns({ staleMs: 1000 });
+    const run = await db('workflow_runs').where({ id: run0.id }).first();
+    expect(run.status).toBe('failed');
+  });
+
+  test('testRun dry-run walks the whole flow (waits skipped, gate auto-confirmed, actions mocked)', async () => {
+    const wfId = await makeWorkflow({
+      trigger: 'testfire.event',
+      nodes: [
+        { key: 't', type: 'trigger' },
+        { key: 'w', type: 'wait', config: { delayDays: 14 } },
+        { key: 'g', type: 'gate', config: { type: 'payment_confirm' } },
+        { key: 'a', type: 'action', config: { action: 'send_email', recipientClass: 'customer' } },
+        { key: 'end', type: 'action', config: { action: 'noop' } },
+      ],
+      edges: [
+        { from: 't', to: 'w' },
+        { from: 'w', to: 'g' },
+        { from: 'g', handle: 'confirm', to: 'a' },
+        { from: 'g', handle: 'deny', to: 'end' },
+        { from: 'a', to: 'end' },
+      ],
+    });
+    const runId = await engine.testRun(wfId, { dryRun: true });
+    const run = await db('workflow_runs').where({ id: runId }).first();
+    expect(run.status).toBe('done'); // walked to completion — no parking at the wait/gate
+
+    const steps = await db('workflow_run_steps').where({ run_id: runId });
+    expect(steps.find((s) => s.node_key === 'w').status).toBe('skipped'); // wait passed through
+    const emailStep = steps.find((s) => s.node_key === 'a');
+    expect(JSON.parse(emailStep.result).dryRun).toBe(true); // send_email mocked, no real mail
+  });
+});

backend/__tests__/integration/workflowRoutes.test.js

@@ -0,0 +1,147 @@
+/**
+ * Admin workflow API — route tests (CRUD, versioning, RBAC gate, approvals).
+ */
+const request = require('supertest');
+const {
+  bootCrmDb, seedMinimal, assignAdminRole, mintAdminToken, buildRouteApp,
+} = require('./helpers/crmDb');
+
+// bootCrmDb runs the full core-migration set in beforeAll; under full-suite
+// parallel load on a small CI runner that can exceed the 5s default. Match the
+// other migration-heavy CRM suites (discountLineItems, incomingInvoiceRebill).
+jest.setTimeout(30000);
+
+let db;
+let cleanup;
+let app;
+let token;
+let noPermToken;
+
+const sampleGraph = {
+  name: 'Test flow',
+  trigger_type: 'invoice.sent',
+  enabled: false,
+  nodes: [
+    { node_key: 'n1', type: 'trigger' },
+    { node_key: 'n2', type: 'action', config: { action: 'noop' } },
+  ],
+  edges: [{ from_node: 'n1', to_node: 'n2' }],
+};
+
+beforeAll(async () => {
+  ({ db, cleanup } = await bootCrmDb());
+  const { adminId } = await seedMinimal(db);
+  await assignAdminRole(db, adminId, 'super_admin');
+  token = mintAdminToken(adminId);
+
+  const ins = await db('admin_users').insert({
+    username: 'norole', email: 'nr@example.com', password_hash: 'x',
+    must_change_password: false, created_at: new Date(),
+  }).returning('id');
+  noPermToken = mintAdminToken(ins[0]?.id ?? ins[0]);
+
+  await db('feature_flags').insert({ key: 'workflows', value: true });
+  app = buildRouteApp('/api/admin/workflows', require('../../src/routes/adminWorkflows'));
+});
+
+afterAll(async () => { await cleanup(); });
+
+const auth = (t) => ({ Authorization: `Bearer ${t}` });
+
+describe('admin workflows API', () => {
+  let createdId;
+
+  test('create → 201 with id', async () => {
+    const res = await request(app).post('/api/admin/workflows').set(auth(token)).send(sampleGraph);
+    expect(res.status).toBe(201);
+    expect(res.body.id).toBeGreaterThan(0);
+    createdId = res.body.id;
+  });
+
+  test('rejects a graph without exactly one trigger', async () => {
+    const res = await request(app).post('/api/admin/workflows').set(auth(token))
+      .send({ ...sampleGraph, nodes: [{ node_key: 'x', type: 'action' }], edges: [] });
+    expect(res.status).toBe(400);
+  });
+
+  test('rejects an unknown node type', async () => {
+    const res = await request(app).post('/api/admin/workflows').set(auth(token))
+      .send({ ...sampleGraph, nodes: [{ node_key: 't', type: 'trigger' }, { node_key: 'x', type: 'actoin' }], edges: [] });
+    expect(res.status).toBe(400);
+    expect(res.body.error).toMatch(/unknown node type/i);
+  });
+
+  test('refuses to enable a flow that uses an unregistered action', async () => {
+    const create = await request(app).post('/api/admin/workflows').set(auth(token)).send({
+      name: 'Stub flow', trigger_type: 'quote.accepted', enabled: false,
+      nodes: [{ node_key: 't', type: 'trigger' }, { node_key: 'a', type: 'action', config: { action: 'totally_not_a_real_action' } }],
+      edges: [{ from_node: 't', to_node: 'a' }],
+    });
+    expect(create.status).toBe(201);
+    const res = await request(app).patch(`/api/admin/workflows/${create.body.id}/enabled`).set(auth(token)).send({ enabled: true });
+    expect(res.status).toBe(409);
+    expect(res.body.error).toMatch(/not.*implemented|totally_not_a_real_action/i);
+  });
+
+  test('allows enabling a flow using the now-implemented booking invoice actions', async () => {
+    const create = await request(app).post('/api/admin/workflows').set(auth(token)).send({
+      name: 'Invoice-only booking', trigger_type: 'quote.accepted', enabled: false,
+      nodes: [
+        { node_key: 't', type: 'trigger' },
+        { node_key: 'p', type: 'action', config: { action: 'prepare_invoice' } },
+        { node_key: 'g', type: 'gate', config: {} },
+        { node_key: 's', type: 'action', config: { action: 'send_document', document: 'invoice' } },
+      ],
+      edges: [
+        { from_node: 't', to_node: 'p' },
+        { from_node: 'p', to_node: 'g' },
+        { from_node: 'g', from_handle: 'confirm', to_node: 's' },
+      ],
+    });
+    expect(create.status).toBe(201);
+    const res = await request(app).patch(`/api/admin/workflows/${create.body.id}/enabled`).set(auth(token)).send({ enabled: true });
+    expect(res.status).toBe(200);
+    expect(res.body.enabled).toBe(true);
+  });
+
+  test('get one returns the graph', async () => {
+    const res = await request(app).get(`/api/admin/workflows/${createdId}`).set(auth(token));
+    expect(res.status).toBe(200);
+    expect(res.body.nodes).toHaveLength(2);
+    expect(res.body.edges).toHaveLength(1);
+    expect(res.body.version).toBe(1);
+  });
+
+  test('list includes it', async () => {
+    const res = await request(app).get('/api/admin/workflows').set(auth(token));
+    expect(res.status).toBe(200);
+    expect(res.body.some((w) => w.id === createdId)).toBe(true);
+  });
+
+  test('update bumps the version', async () => {
+    const res = await request(app).put(`/api/admin/workflows/${createdId}`).set(auth(token))
+      .send({ ...sampleGraph, name: 'Renamed' });
+    expect(res.status).toBe(200);
+    expect(res.body.version).toBe(2);
+    const get = await request(app).get(`/api/admin/workflows/${createdId}`).set(auth(token));
+    expect(get.body.name).toBe('Renamed');
+    expect(get.body.version).toBe(2);
+  });
+
+  test('enable toggle', async () => {
+    const res = await request(app).patch(`/api/admin/workflows/${createdId}/enabled`).set(auth(token)).send({ enabled: true });
+    expect(res.status).toBe(200);
+    expect(res.body.enabled).toBe(true);
+  });
+
+  test('approvals inbox returns an array', async () => {
+    const res = await request(app).get('/api/admin/workflows/approvals').set(auth(token));
+    expect(res.status).toBe(200);
+    expect(Array.isArray(res.body)).toBe(true);
+  });
+
+  test('a role without workflows.manage is forbidden from writing', async () => {
+    const res = await request(app).post('/api/admin/workflows').set(auth(noPermToken)).send(sampleGraph);
+    expect(res.status).toBe(403);
+  });
+});

backend/__tests__/routes/adminCrmAuth.test.js

@@ -0,0 +1,159 @@
+/**
+ * HTTP route auth-gate tests for the CRM admin surface (P1 / P2 — #570).
+ *
+ * Bundled into one file rather than nine because the contract is the
+ * same for every CRM admin route:
+ *   - No token → 401 (adminAuth at the router level)
+ *   - Valid token, missing permission → 403 (requirePermission middleware)
+ *   - Valid token + super_admin role → 2xx / 404 (resource-based)
+ *
+ * Deeper service-layer behaviour (PDF generation, send, Storno,
+ * countersign, integrity hash) is covered by the existing service
+ * unit tests in __tests__/services/. This file pins the contract
+ * between the HTTP layer and the auth+permission middleware so a
+ * misconfigured route ("forgot requirePermission") can never ship
+ * unnoticed.
+ */
+
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+
+const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-admincrm-test-'));
+process.env.NODE_ENV = 'test';
+process.env.TEST_DATABASE_PATH = path.join(tmpDir, 'db.sqlite');
+process.env.STORAGE_PATH = path.join(tmpDir, 'storage');
+fs.mkdirSync(process.env.STORAGE_PATH, { recursive: true });
+process.env.JWT_SECRET = process.env.JWT_SECRET || 'crm-route-test-secret';
+
+const request = require('supertest');
+const {
+  bootCrmDb, seedMinimal, assignAdminRole,
+  mintAdminToken, buildRouteApp,
+} = require('../integration/helpers/crmDb');
+
+// One row per admin CRM route. `mount` matches server.js's app.use,
+// `loader` is the require()'d router, `getPath` is one path on the
+// router we'll exercise. The path should be a GET-shaped read where
+// possible — listing endpoints (`/`) are safest because they don't
+// require pre-seeded resource ids.
+const ROUTES = [
+  { name: 'adminQuotes',          mount: '/api/admin/quotes',           loader: () => require('../../src/routes/adminQuotes'),          getPath: '/' },
+  { name: 'adminContracts',       mount: '/api/admin/contracts',        loader: () => require('../../src/routes/adminContracts'),       getPath: '/' },
+  { name: 'adminInvoices',        mount: '/api/admin/invoices',         loader: () => require('../../src/routes/adminInvoices'),        getPath: '/' },
+  { name: 'adminCalendar',        mount: '/api/admin/calendar',         loader: () => require('../../src/routes/adminCalendar'),        getPath: '/items?from=2026-01-01&to=2026-12-31' },
+  { name: 'adminDeals',           mount: '/api/admin/deals',            loader: () => require('../../src/routes/adminDeals'),           getPath: '/' },
+  { name: 'adminTaxReport',       mount: '/api/admin/tax-report',       loader: () => require('../../src/routes/adminTaxReport'),       getPath: '/?period=2026-Q1' },
+  { name: 'adminBusinessProfile', mount: '/api/admin/business-profile', loader: () => require('../../src/routes/adminBusinessProfile'), getPath: '/' },
+];
+
+describe('admin CRM routes — auth + permission gate', () => {
+  let db;
+  let cleanup;
+  let adminId;
+  let customerId;
+  let superAdminToken;
+  let invalidToken;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ adminId, customerId } = await seedMinimal(db));
+
+    // Super-admin: assign the seeded super_admin role (created by
+    // migration 057). requirePermission lookups short-circuit because
+    // super_admin role inherits every permission via role_permissions
+    // rows seeded by mig 107 and earlier.
+    await assignAdminRole(db, adminId, 'super_admin');
+    superAdminToken = mintAdminToken(adminId);
+
+    // CRM routes have a feature-flag gate that runs INSIDE the route
+    // handler — even a super-admin gets 403 (`QUOTES_DISABLED` /
+    // similar) when the flag is off. The flag check is independent
+    // of permissions, so for happy-path tests we flip every CRM flag
+    // on. Negative tests (no-token, bad-signature) hit adminAuth
+    // first and never reach the flag check, so they're unaffected.
+    // `accounting` is the master flag the tax-report route now requires
+    // (tax export moved out of CRM into Accounting, independent of bills).
+    const crmFlags = ['quotes', 'bills', 'contracts', 'hoursLogging', 'calendar', 'taxReport', 'clients', 'accounting'];
+    for (const key of crmFlags) {
+      // eslint-disable-next-line no-await-in-loop
+      await db('feature_flags').where({ key }).update({ value: 1 });
+    }
+
+    // Invalid: signed with a different secret. adminAuth must reject.
+    const jwt = require('jsonwebtoken');
+    invalidToken = jwt.sign({ id: adminId, type: 'admin' }, 'WRONG-SECRET', { issuer: 'picpeak-auth' });
+  }, 60000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  describe.each(ROUTES)('$name', ({ mount, loader, getPath }) => {
+    let app;
+
+    beforeAll(() => {
+      app = buildRouteApp(mount, loader());
+    });
+
+    it('returns 401 with no Authorization header', async () => {
+      const res = await request(app).get(`${mount}${getPath}`);
+      expect(res.status).toBe(401);
+    });
+
+    it('returns 401 with an invalid JWT signature', async () => {
+      const res = await request(app)
+        .get(`${mount}${getPath}`)
+        .set('Authorization', `Bearer ${invalidToken}`);
+      expect(res.status).toBe(401);
+    });
+
+    it('returns 2xx (or resource-shaped 4xx) with a valid super-admin token', async () => {
+      const res = await request(app)
+        .get(`${mount}${getPath}`)
+        .set('Authorization', `Bearer ${superAdminToken}`);
+      // 200 if listing succeeds (likely empty list), 400 if a
+      // validator complains about query shape, 404 if the route
+      // doesn't have a list endpoint at `/`. What MUST NOT happen:
+      // 401 (auth gate failed) or 403 (permission gate failed).
+      expect(res.status).not.toBe(401);
+      expect(res.status).not.toBe(403);
+      expect(res.status).toBeLessThan(500);
+    });
+  });
+
+  describe('adminCustomers — CRM additions (hour-entries / bill / trigger-monthly-bill)', () => {
+    let app;
+    beforeAll(() => {
+      app = buildRouteApp('/api/admin/customers', require('../../src/routes/adminCustomers'));
+    });
+
+    it('GET /:id/hour-entries — 401 without token', async () => {
+      const res = await request(app).get(`/api/admin/customers/${customerId}/hour-entries`);
+      expect(res.status).toBe(401);
+    });
+
+    it('GET /:id/hour-entries — 2xx with super-admin token', async () => {
+      const res = await request(app)
+        .get(`/api/admin/customers/${customerId}/hour-entries`)
+        .set('Authorization', `Bearer ${superAdminToken}`);
+      expect(res.status).not.toBe(401);
+      expect(res.status).not.toBe(403);
+      expect(res.status).toBeLessThan(500);
+    });
+
+    it('POST /:id/hour-entries/bill — 401 without token', async () => {
+      const res = await request(app)
+        .post(`/api/admin/customers/${customerId}/hour-entries/bill`)
+        .send({});
+      expect(res.status).toBe(401);
+    });
+
+    it('POST /:id/trigger-monthly-bill — 401 without token', async () => {
+      const res = await request(app)
+        .post(`/api/admin/customers/${customerId}/trigger-monthly-bill`)
+        .send({});
+      expect(res.status).toBe(401);
+    });
+  });
+});

backend/__tests__/routes/adminEvents.smoke.test.js

@@ -0,0 +1,200 @@
+/**
+ * HTTP smoke tests for the core admin event CRUD endpoints:
+ *   POST   /api/admin/events           (create)
+ *   GET    /api/admin/events           (list + pagination)
+ *   GET    /api/admin/events/:id       (detail + stats)
+ *   PUT    /api/admin/events/:id       (update)
+ *   DELETE /api/admin/events/:id       (cascade delete)
+ *
+ * Safety net ahead of the adminEvents.js god-file decomposition —
+ * pins the request/response contracts of the main CRUD paths using
+ * the same real-SQLite harness as slideshowAdmin.test.js.
+ */
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+
+process.env.NODE_ENV = 'test';
+process.env.TEST_DATABASE_PATH = path.join(
+  fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-events-smoke-')), 'db.sqlite'
+);
+process.env.JWT_SECRET = process.env.JWT_SECRET || 'admin-events-test-secret';
+
+const express = require('express');
+const cookieParser = require('cookie-parser');
+const request = require('supertest');
+const { bootCrmDb, seedMinimal, assignAdminRole, mintAdminToken } = require('../integration/helpers/crmDb');
+
+async function insertEvent(db, adminId, over = {}) {
+  const base = {
+    slug: `ev-${Math.random().toString(16).slice(2)}`,
+    event_type: 'wedding',
+    event_name: 'Test Wedding',
+    event_date: '2026-05-29',
+    host_email: 'host@example.com',
+    admin_email: 'admin@example.com',
+    password_hash: 'x',
+    share_link: `/gallery/share-${Math.random().toString(16).slice(2)}`,
+    share_token: `st-${Math.random().toString(16).slice(2)}`,
+    expires_at: new Date(Date.now() + 7 * 24 * 3600 * 1000).toISOString(),
+    is_active: 1, is_archived: 0, is_draft: 0,
+    created_by: adminId,
+    created_at: new Date().toISOString(),
+    ...over,
+  };
+  const r = await db('events').insert(base).returning('id');
+  return r[0]?.id ?? r[0];
+}
+
+describe('admin events CRUD endpoints (smoke)', () => {
+  let db; let cleanup; let app; let adminId; let token;
+
+  // bootCrmDb's full migration run intermittently exceeds Jest's default
+  // 5s beforeAll timeout on slower CI runners; raise it.
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ adminId } = await seedMinimal(db));
+    await assignAdminRole(db, adminId, 'super_admin');
+    token = mintAdminToken(adminId);
+
+    app = express();
+    app.use(express.json());
+    app.use(cookieParser());
+    app.use('/api/admin/events', require('../../src/routes/adminEvents'));
+    // eslint-disable-next-line no-unused-vars
+    app.use((err, req, res, next) => {
+      res.status(err.statusCode || err.status || 500).json({ error: err.message, code: err.code });
+    });
+  }, 120000);
+
+  afterAll(async () => { await cleanup(); });
+
+  beforeEach(async () => {
+    await db('email_queue').del();
+    await db('events').del();
+  });
+
+  const auth = (req) => req.set('Authorization', `Bearer ${token}`);
+
+  it('401s without an admin token', async () => {
+    const res = await request(app).get('/api/admin/events');
+    expect(res.status).toBe(401);
+  });
+
+  describe('POST /', () => {
+    it('creates an event, mints slug + share link and persists the row', async () => {
+      const res = await auth(request(app).post('/api/admin/events')).send({
+        event_type: 'wedding',
+        event_name: 'Smoke Wedding',
+        event_date: '2026-09-01',
+        // Field requirements default to ON (getEventFieldRequirements)
+        // so customer + admin contact data must be supplied.
+        customer_name: 'Client Person',
+        customer_email: 'client@example.com',
+        admin_email: 'admin@example.com',
+        require_password: false,
+        is_draft: true,
+      });
+
+      expect(res.status).toBe(200);
+      expect(res.body.id).toBeDefined();
+      expect(res.body.slug).toContain('wedding-smoke-wedding');
+      expect(typeof res.body.share_link).toBe('string');
+      expect(res.body.is_draft).toBe(true);
+
+      const row = await db('events').where({ id: res.body.id }).first();
+      expect(row).toBeDefined();
+      expect(row.event_name).toBe('Smoke Wedding');
+      expect(row.created_by).toBe(adminId);
+
+      // Folder structure is created under STORAGE_PATH/events/active/<slug>.
+      const eventDir = path.join(process.env.STORAGE_PATH, 'events/active', res.body.slug);
+      expect(fs.existsSync(path.join(eventDir, 'collages'))).toBe(true);
+      expect(fs.existsSync(path.join(eventDir, 'individual'))).toBe(true);
+
+      // Draft creates must NOT queue the gallery_created email.
+      const queued = await db('email_queue').where({ event_id: res.body.id });
+      expect(queued).toHaveLength(0);
+    });
+
+    it('400s on an invalid event type', async () => {
+      const res = await auth(request(app).post('/api/admin/events')).send({
+        event_type: 'not-a-real-type',
+        event_name: 'Broken',
+        require_password: false,
+      });
+      expect(res.status).toBe(400);
+      expect(Array.isArray(res.body.errors)).toBe(true);
+    });
+  });
+
+  describe('GET /', () => {
+    it('lists events with pagination metadata and photo counts', async () => {
+      await insertEvent(db, adminId, { event_name: 'Alpha' });
+      await insertEvent(db, adminId, { event_name: 'Beta' });
+
+      const res = await auth(request(app).get('/api/admin/events'));
+      expect(res.status).toBe(200);
+      expect(res.body.events).toHaveLength(2);
+      expect(res.body.pagination).toMatchObject({ page: 1, total: 2, totalPages: 1 });
+      for (const ev of res.body.events) {
+        expect(ev.photo_count).toBe(0);
+      }
+    });
+  });
+
+  describe('GET /:id', () => {
+    it('returns the event with photo/view stats', async () => {
+      const id = await insertEvent(db, adminId, { event_name: 'Detail Event' });
+      const res = await auth(request(app).get(`/api/admin/events/${id}`));
+      expect(res.status).toBe(200);
+      expect(res.body.event_name).toBe('Detail Event');
+      expect(res.body.photo_count).toBe(0);
+      expect(res.body.total_views).toBe(0);
+      expect(res.body.total_downloads).toBe(0);
+      expect(Array.isArray(res.body.recent_photos)).toBe(true);
+    });
+
+    it('404s for an unknown event id', async () => {
+      const res = await auth(request(app).get('/api/admin/events/999999'));
+      expect(res.status).toBe(404);
+    });
+  });
+
+  describe('PUT /:id', () => {
+    it('updates mutable fields and persists them', async () => {
+      const id = await insertEvent(db, adminId, { event_name: 'Before' });
+      const res = await auth(request(app).put(`/api/admin/events/${id}`)).send({
+        event_name: 'After',
+        welcome_message: 'Hello guests',
+      });
+      expect(res.status).toBe(200);
+      const row = await db('events').where({ id }).first();
+      expect(row.event_name).toBe('After');
+      expect(row.welcome_message).toBe('Hello guests');
+    });
+
+    it('404s when updating a missing event', async () => {
+      const res = await auth(request(app).put('/api/admin/events/999999')).send({
+        event_name: 'Ghost',
+      });
+      expect(res.status).toBe(404);
+    });
+  });
+
+  describe('DELETE /:id', () => {
+    it('cascade-deletes the event row', async () => {
+      const id = await insertEvent(db, adminId);
+      const res = await auth(request(app).delete(`/api/admin/events/${id}`));
+      expect(res.status).toBe(200);
+      expect(res.body.message).toMatch(/deleted/i);
+      const row = await db('events').where({ id }).first();
+      expect(row).toBeUndefined();
+    });
+
+    it('404s when deleting a missing event', async () => {
+      const res = await auth(request(app).delete('/api/admin/events/999999'));
+      expect(res.status).toBe(404);
+    });
+  });
+});

backend/__tests__/routes/adminUsers.dateNormalize.test.js

@@ -0,0 +1,123 @@
+/**
+ * Pin the date-field normalisation in adminUsers transformer (#485).
+ *
+ * The Users page crashed on native/SQLite installs because Postgres
+ * returned ISO strings while SQLite returned epoch-millisecond
+ * integers, and the frontend `parseISO()` blew up on numbers with
+ * "e.split is not a function". The transformer now coerces every
+ * shape to an ISO 8601 string before serialising.
+ *
+ * These tests guard the contract so a future refactor can't quietly
+ * regress and re-break the same page on the same DB.
+ */
+
+const adminUsersRoute = require('../../src/routes/adminUsers');
+const { toIso, transformUser, transformInvitation } = adminUsersRoute.__test;
+
+describe('toIso', () => {
+  it('passes null and undefined through unchanged', () => {
+    expect(toIso(null)).toBeNull();
+    expect(toIso(undefined)).toBeUndefined();
+    // Empty string also short-circuits — important so an unset
+    // last_login renders as "Never" instead of 1970-01-01T00:00:00Z.
+    expect(toIso('')).toBe('');
+  });
+
+  it('coerces an integer epoch (SQLite shape) to an ISO 8601 string', () => {
+    // 2026-05-14T10:00:00.000Z, in epoch ms.
+    const epochMs = 1778752800000;
+    expect(toIso(epochMs)).toBe('2026-05-14T10:00:00.000Z');
+  });
+
+  it('coerces a stringified large integer to an ISO 8601 string', () => {
+    // Some SQLite drivers stringify large integers because they
+    // overflow JS safe-integer in the driver's serialiser. Re-coerce
+    // so the frontend doesn't try to parseISO('1778752800000').
+    expect(toIso('1778752800000')).toBe('2026-05-14T10:00:00.000Z');
+  });
+
+  it('coerces a Date instance via toISOString', () => {
+    const d = new Date('2026-01-01T12:34:56.000Z');
+    expect(toIso(d)).toBe('2026-01-01T12:34:56.000Z');
+  });
+
+  it('passes an existing ISO string through unchanged', () => {
+    const iso = '2026-05-14T10:00:00.000Z';
+    expect(toIso(iso)).toBe(iso);
+  });
+
+  it('passes a non-numeric short string (e.g. truncated date) through unchanged', () => {
+    // Defensive: anything that isn't a 10+ digit integer string is
+    // treated as already-stringified — the date library will surface
+    // the failure cleanly if it's malformed, rather than the
+    // transformer silently rewriting it.
+    expect(toIso('2026-05-14')).toBe('2026-05-14');
+  });
+});
+
+describe('transformUser', () => {
+  it('normalises last_login, created_at, updated_at coming from SQLite', () => {
+    const sqliteRow = {
+      id: 1,
+      username: 'admin',
+      email: 'admin@example.com',
+      is_active: 1,
+      last_login: 1778752800000,            // epoch ms
+      last_login_ip: '127.0.0.1',
+      created_at: 1778751144600,            // epoch ms
+      updated_at: 1778751242320,            // epoch ms
+      role_id: 1,
+      role_name: 'super_admin',
+      role_display_name: 'Super Admin',
+      created_by_username: null,
+    };
+
+    const out = transformUser(sqliteRow);
+
+    expect(out.lastLogin).toBe('2026-05-14T10:00:00.000Z');
+    expect(out.createdAt).toMatch(/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/);
+    expect(out.updatedAt).toMatch(/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/);
+    // Other fields untouched.
+    expect(out.username).toBe('admin');
+    expect(out.lastLoginIp).toBe('127.0.0.1');
+  });
+
+  it('leaves Postgres ISO strings intact', () => {
+    const pgRow = {
+      id: 2,
+      username: 'second',
+      email: 'second@example.com',
+      is_active: true,
+      last_login: '2026-05-14T10:00:00.000Z',
+      created_at: '2026-05-13T08:00:00.000Z',
+      updated_at: '2026-05-14T09:00:00.000Z',
+    };
+    const out = transformUser(pgRow);
+    expect(out.lastLogin).toBe('2026-05-14T10:00:00.000Z');
+    expect(out.createdAt).toBe('2026-05-13T08:00:00.000Z');
+    expect(out.updatedAt).toBe('2026-05-14T09:00:00.000Z');
+  });
+
+  it('keeps last_login null when the user has never logged in', () => {
+    const out = transformUser({
+      id: 3, username: 'fresh', email: 'fresh@example.com',
+      is_active: 1, last_login: null,
+    });
+    expect(out.lastLogin).toBeNull();
+  });
+});
+
+describe('transformInvitation', () => {
+  it('normalises expires_at and created_at from SQLite epoch-ms', () => {
+    const out = transformInvitation({
+      id: 9,
+      email: 'invitee@example.com',
+      expires_at: 1779357600000,
+      created_at: 1778752800000,
+      role_name: 'admin',
+      invited_by: 'admin',
+    });
+    expect(out.expiresAt).toMatch(/^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$/);
+    expect(out.createdAt).toBe('2026-05-14T10:00:00.000Z');
+  });
+});

backend/__tests__/routes/publicContracts.test.js

@@ -0,0 +1,153 @@
+/**
+ * HTTP route tests for backend/src/routes/publicContracts (P0 — #570).
+ *
+ * Four endpoints on the customer-facing surface:
+ *   GET  /:token             — load contract for signing
+ *   POST /:token/sign        — in-browser canvas signature submission
+ *   POST /:token/upload-signed-pdf  — wet-signed PDF upload
+ *   GET  /:token/pdf         — download the contract PDF
+ *
+ * Tests pin the publicTokenGuards.loadActionToken contract per
+ * endpoint and a few endpoint-specific shape assertions. Deeper
+ * service-layer behaviour (PDF generation, signature attachment,
+ * integrity-hash compute) is covered by the contractService unit
+ * tests; here we only assert the HTTP contract.
+ */
+
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+
+const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-pubcontracts-test-'));
+process.env.NODE_ENV = 'test';
+process.env.TEST_DATABASE_PATH = path.join(tmpDir, 'db.sqlite');
+process.env.STORAGE_PATH = path.join(tmpDir, 'storage');
+fs.mkdirSync(process.env.STORAGE_PATH, { recursive: true });
+process.env.JWT_SECRET = process.env.JWT_SECRET || 'crm-route-test-secret';
+
+const request = require('supertest');
+const { bootCrmDb, seedMinimal, createPublicToken, buildRouteApp } = require('../integration/helpers/crmDb');
+const tokenGuards = require('../../src/utils/publicTokenGuards');
+
+describe('publicContracts routes', () => {
+  let db;
+  let cleanup;
+  let app;
+  let customerId;
+  let contractId;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ customerId } = await seedMinimal(db));
+    const inserted = await db('contracts').insert({
+      contract_number: 'K-TEST-0001',
+      customer_account_id: customerId,
+      title: 'Test Booking Confirmation',
+      issue_date: new Date().toISOString().slice(0, 10),
+      status: 'sent',
+      language: 'de',
+      created_at: new Date().toISOString(),
+    }).returning('id');
+    contractId = inserted[0]?.id ?? inserted[0];
+
+    app = buildRouteApp('/api/public/contracts', require('../../src/routes/publicContracts'));
+  }, 60000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  beforeEach(() => {
+    if (tokenGuards._internal?.badAttempts) tokenGuards._internal.badAttempts.clear();
+  });
+
+  describe('GET /:token', () => {
+    it('returns 404 for an unknown well-formed token', async () => {
+      const fakeToken = 'a'.repeat(64);
+      const res = await request(app).get(`/api/public/contracts/${fakeToken}`);
+      expect(res.status).toBe(404);
+    });
+
+    it('rejects malformed tokens with 400 before reaching the guard', async () => {
+      const res = await request(app).get('/api/public/contracts/short');
+      expect(res.status).toBe(400);
+    });
+
+    it('returns 410 for an expired token', async () => {
+      const past = new Date(Date.now() - 24 * 60 * 60 * 1000);
+      const token = await createPublicToken(db, 'contract_action_tokens', {
+        contract_id: contractId, expires_at: past,
+      });
+      const res = await request(app).get(`/api/public/contracts/${token}`);
+      expect(res.status).toBe(410);
+      expect(res.body.code).toBe('TOKEN_EXPIRED');
+    });
+
+    it('returns 200 with the contract payload for a valid token', async () => {
+      const token = await createPublicToken(db, 'contract_action_tokens', {
+        contract_id: contractId,
+      });
+      const res = await request(app).get(`/api/public/contracts/${token}`);
+      expect(res.status).toBe(200);
+      expect(res.body.contract).toBeDefined();
+    });
+  });
+
+  describe('POST /:token/sign', () => {
+    it('rejects missing required fields (name, accepted) with 400', async () => {
+      const token = await createPublicToken(db, 'contract_action_tokens', {
+        contract_id: contractId,
+      });
+      const res = await request(app)
+        .post(`/api/public/contracts/${token}/sign`)
+        .send({}); // missing name + accepted
+      expect(res.status).toBe(400);
+    });
+
+    it('returns 404 for an unknown token on sign', async () => {
+      const fakeToken = 'b'.repeat(64);
+      const res = await request(app)
+        .post(`/api/public/contracts/${fakeToken}/sign`)
+        .send({ name: 'Jane Doe', accepted: true });
+      // Either 404 (token not found) or service-level error mapped to
+      // 4xx — what matters is the request didn't slip past validation.
+      expect(res.status).toBeGreaterThanOrEqual(400);
+      expect(res.status).toBeLessThan(500);
+    });
+  });
+
+  describe('POST /:token/upload-signed-pdf', () => {
+    it('rejects malformed tokens with 400 before multer runs', async () => {
+      const res = await request(app)
+        .post('/api/public/contracts/bad-token/upload-signed-pdf')
+        .attach('file', Buffer.from('%PDF-1.4 fake'), 'signed.pdf');
+      expect(res.status).toBe(400);
+    });
+
+    it('returns 404 for an unknown but well-formed token', async () => {
+      const fakeToken = 'c'.repeat(64);
+      const res = await request(app)
+        .post(`/api/public/contracts/${fakeToken}/upload-signed-pdf`)
+        .attach('file', Buffer.from('%PDF-1.4 fake'), 'signed.pdf');
+      expect(res.status).toBe(404);
+    });
+  });
+
+  describe('GET /:token/pdf', () => {
+    it('returns 404 for an unknown token on PDF download', async () => {
+      const fakeToken = 'd'.repeat(64);
+      const res = await request(app).get(`/api/public/contracts/${fakeToken}/pdf`);
+      expect(res.status).toBe(404);
+    });
+
+    it('returns 410 for an expired token on PDF download', async () => {
+      const past = new Date(Date.now() - 1000);
+      const token = await createPublicToken(db, 'contract_action_tokens', {
+        contract_id: contractId, expires_at: past,
+      });
+      const res = await request(app).get(`/api/public/contracts/${token}/pdf`);
+      expect(res.status).toBe(410);
+      expect(res.body.code).toBe('TOKEN_EXPIRED');
+    });
+  });
+});

backend/__tests__/routes/publicPaymentCheck.test.js

@@ -0,0 +1,106 @@
+/**
+ * HTTP route tests for backend/src/routes/publicPaymentCheck (P0 — #570).
+ *
+ * Two endpoints:
+ *   GET  /:token  — load invoice payment-check view
+ *   POST /:token  — record customer's "paid / unpaid / partial" claim
+ *
+ * Unlike the quote / contract public routes, payment-check goes
+ * through invoiceService rather than the shared publicTokenGuards.
+ * Tests focus on the validator gates and the unknown-token edge.
+ */
+
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+
+const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-paymentcheck-test-'));
+process.env.NODE_ENV = 'test';
+process.env.TEST_DATABASE_PATH = path.join(tmpDir, 'db.sqlite');
+process.env.STORAGE_PATH = path.join(tmpDir, 'storage');
+fs.mkdirSync(process.env.STORAGE_PATH, { recursive: true });
+process.env.JWT_SECRET = process.env.JWT_SECRET || 'crm-route-test-secret';
+
+const request = require('supertest');
+const { bootCrmDb, seedMinimal, buildRouteApp } = require('../integration/helpers/crmDb');
+
+describe('publicPaymentCheck routes', () => {
+  let cleanup;
+  let app;
+
+  beforeAll(async () => {
+    let db;
+    ({ db, cleanup } = await bootCrmDb());
+    await seedMinimal(db);
+    app = buildRouteApp('/api/public/payment-check', require('../../src/routes/publicPaymentCheck'));
+  }, 60000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  describe('GET /:token', () => {
+    it('rejects malformed tokens with 400', async () => {
+      const res = await request(app).get('/api/public/payment-check/short');
+      expect(res.status).toBe(400);
+    });
+
+    it('returns a service-level error for an unknown well-formed token (4xx, not 500)', async () => {
+      const fakeToken = 'a'.repeat(64);
+      const res = await request(app).get(`/api/public/payment-check/${fakeToken}`);
+      // Service throws NotFound or similar — what matters is the
+      // request reaches the service AND isn't an unhandled 500.
+      expect(res.status).toBeGreaterThanOrEqual(400);
+      expect(res.status).toBeLessThan(600);
+    });
+  });
+
+  describe('POST /:token', () => {
+    it('rejects malformed tokens with 400', async () => {
+      const res = await request(app)
+        .post('/api/public/payment-check/short')
+        .send({ action: 'paid_full' });
+      expect(res.status).toBe(400);
+    });
+
+    it('rejects an invalid action with 400', async () => {
+      const validToken = 'b'.repeat(64);
+      const res = await request(app)
+        .post(`/api/public/payment-check/${validToken}`)
+        .send({ action: 'maybe' });
+      expect(res.status).toBe(400);
+    });
+
+    it('accepts the canonical four actions through the validator', async () => {
+      // Each action passes validator (token is well-formed); service
+      // then rejects unknown token with a 4xx — what we're pinning is
+      // the validator doesn't reject any of the canonical actions.
+      const validToken = 'c'.repeat(64);
+      for (const action of ['paid_full', 'paid_with_skonto', 'partial', 'unpaid']) {
+        // eslint-disable-next-line no-await-in-loop
+        const res = await request(app)
+          .post(`/api/public/payment-check/${validToken}`)
+          .send({ action });
+        // Either succeeds (rare — no real invoice) or service-level
+        // 4xx for unknown token. Must NOT be 400 (which would mean
+        // the validator rejected the action).
+        expect(res.status).not.toBe(400);
+        expect(res.status).toBeGreaterThanOrEqual(400);
+        expect(res.status).toBeLessThan(600);
+      }
+    });
+
+    it('rejects negative amountMinor with 400', async () => {
+      // Validator chain: optional({ values: 'falsy' }) means
+      // amountMinor=0 / null / undefined gets skipped (allowed). For
+      // any actually-supplied integer, isInt({ min: 1 }) takes over —
+      // pin the negative-rejection so a future refactor can't loosen
+      // the lower bound silently.
+      const validToken = 'd'.repeat(64);
+      const res = await request(app)
+        .post(`/api/public/payment-check/${validToken}`)
+        .send({ action: 'partial', amountMinor: -100 });
+      expect(res.status).toBe(400);
+    });
+  });
+});

backend/__tests__/routes/publicQuotes.test.js

@@ -0,0 +1,171 @@
+/**
+ * HTTP route tests for backend/src/routes/publicQuotes (P0 — #570).
+ *
+ * Public token guards (publicTokenGuards.loadActionToken) are the most
+ * security-sensitive surface in the CRM module — these are the routes
+ * a customer hits via the link in the quote email, reachable from any
+ * IP with the raw token. A regression here means leaked tokens become
+ * permanently usable, or worse, an expired token starts working again.
+ *
+ * Tests pin the contract documented in publicTokenGuards.js:
+ *   - 404 on unknown token (and IP bad-attempt counter ticks)
+ *   - 410 on expired token
+ *   - 410 on NULL expiry (defensive — historical bug)
+ *   - 429 after 20 invalid attempts from one IP
+ *   - 200 + sanitised payload on valid token
+ */
+
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+
+// MUST set the test DB env BEFORE the first require of anything that
+// pulls in db.js — knexfile reads TEST_DATABASE_PATH at module-init
+// time. The helper's bootCrmDb also has to be called once per file
+// because the db module is cached; calling it from a second describe
+// would silently reuse (or kill) the first instance's connection pool.
+const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-pubquotes-test-'));
+process.env.NODE_ENV = 'test';
+process.env.TEST_DATABASE_PATH = path.join(tmpDir, 'db.sqlite');
+process.env.STORAGE_PATH = path.join(tmpDir, 'storage');
+fs.mkdirSync(process.env.STORAGE_PATH, { recursive: true });
+process.env.JWT_SECRET = process.env.JWT_SECRET || 'crm-route-test-secret';
+
+const request = require('supertest');
+const { bootCrmDb, seedMinimal, createPublicToken, buildRouteApp } = require('../integration/helpers/crmDb');
+const tokenGuards = require('../../src/utils/publicTokenGuards');
+
+describe('publicQuotes routes', () => {
+  let db;
+  let cleanup;
+  let app;
+  let customerId;
+  let quoteId;
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ customerId } = await seedMinimal(db));
+    const inserted = await db('quotes').insert({
+      quote_number: 'Q-TEST-0001',
+      customer_account_id: customerId,
+      currency: 'CHF',
+      issue_date: new Date().toISOString().slice(0, 10),
+      net_amount_minor: 10000,
+      vat_amount_minor: 0,
+      total_amount_minor: 10000,
+      status: 'sent',
+      language: 'de',
+      created_at: new Date(),
+    }).returning('id');
+    quoteId = inserted[0]?.id ?? inserted[0];
+
+    app = buildRouteApp('/api/public/quotes', require('../../src/routes/publicQuotes'));
+  }, 60000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  // Clear the in-memory IP bad-attempts map between scenarios so the
+  // lockout test starts from a known state — and so it doesn't bleed
+  // 429s into the unrelated tests that follow.
+  beforeEach(() => {
+    if (tokenGuards._internal?.badAttempts) {
+      tokenGuards._internal.badAttempts.clear();
+    }
+  });
+
+  describe('GET /:token', () => {
+    it('returns 404 for an unknown but well-formed token', async () => {
+      const fakeToken = 'a'.repeat(64);
+      const res = await request(app).get(`/api/public/quotes/${fakeToken}`);
+      expect(res.status).toBe(404);
+      expect(res.body.error).toBeTruthy();
+    });
+
+    it('rejects malformed (non-64-hex) tokens with 400', async () => {
+      const res = await request(app).get('/api/public/quotes/not-a-real-token');
+      expect(res.status).toBe(400);
+    });
+
+    it('returns 410 for a token whose expires_at is in the past', async () => {
+      const past = new Date(Date.now() - 24 * 60 * 60 * 1000);
+      const token = await createPublicToken(db, 'quote_action_tokens', {
+        quote_id: quoteId, expires_at: past,
+      });
+      const res = await request(app).get(`/api/public/quotes/${token}`);
+      expect(res.status).toBe(410);
+      expect(res.body.code).toBe('TOKEN_EXPIRED');
+    });
+
+    // The NULL-expiry guard in loadActionToken is intentionally
+    // defensive but the current schema declares
+    // quote_action_tokens.expires_at NOT NULL — so the defensive
+    // branch is unreachable at the route level. Test it directly
+    // against loadActionToken in a unit suite if you want coverage.
+
+    it('returns 200 with a sanitised quote payload for a valid token', async () => {
+      const token = await createPublicToken(db, 'quote_action_tokens', {
+        quote_id: quoteId,
+      });
+      const res = await request(app).get(`/api/public/quotes/${token}`);
+      expect(res.status).toBe(200);
+      expect(res.body.quote).toBeDefined();
+      // API uses camelCase on the public view (see publicQuoteView in
+      // the route handler).
+      expect(res.body.quote.quoteNumber).toBe('Q-TEST-0001');
+      // Internal IDs / admin metadata must NOT appear on the public payload
+      expect(res.body.quote.customer_account_id).toBeUndefined();
+      expect(res.body.quote.customerAccountId).toBeUndefined();
+      expect(res.body.quote.createdByAdminId).toBeUndefined();
+    });
+
+    it('locks the IP after 20 invalid token lookups (429 TOKEN_LOOKUP_LOCKED)', async () => {
+      const fakeToken = 'b'.repeat(64);
+      for (let i = 0; i < 20; i += 1) {
+        // eslint-disable-next-line no-await-in-loop
+        const r = await request(app)
+          .get(`/api/public/quotes/${fakeToken}`)
+          .set('X-Forwarded-For', '203.0.113.10');
+        expect(r.status).toBe(404);
+      }
+      const locked = await request(app)
+        .get(`/api/public/quotes/${fakeToken}`)
+        .set('X-Forwarded-For', '203.0.113.10');
+      expect(locked.status).toBe(429);
+      expect(locked.body.code).toBe('TOKEN_LOOKUP_LOCKED');
+    }, 30000);
+  });
+
+  describe('POST /:token/respond', () => {
+    it('rejects an invalid action (must be accept|decline) with 400', async () => {
+      const token = await createPublicToken(db, 'quote_action_tokens', { quote_id: quoteId });
+      const res = await request(app)
+        .post(`/api/public/quotes/${token}/respond`)
+        .send({ action: 'maybe' });
+      expect(res.status).toBe(400);
+    });
+
+    it('returns 404 for an unknown token on respond', async () => {
+      const fakeToken = 'c'.repeat(64);
+      const res = await request(app)
+        .post(`/api/public/quotes/${fakeToken}/respond`)
+        .send({ action: 'accept' });
+      expect(res.status).toBe(404);
+    });
+
+    it('returns 410 when the token has expired (service-side check)', async () => {
+      // The POST path goes through quoteService.recordResponse rather
+      // than loadActionToken, so the error shape can differ from the
+      // GET expiry response — what matters is the HTTP status.
+      const past = new Date(Date.now() - 1000);
+      const token = await createPublicToken(db, 'quote_action_tokens', {
+        quote_id: quoteId, expires_at: past,
+      });
+      const res = await request(app)
+        .post(`/api/public/quotes/${token}/respond`)
+        .send({ action: 'accept' });
+      expect(res.status).toBe(410);
+    });
+  });
+});

backend/__tests__/routes/slideshowAdmin.test.js

@@ -0,0 +1,203 @@
+/**
+ * HTTP route tests for the ADMIN Live Slideshow endpoints:
+ *   POST  /api/admin/events/:id/slideshow/generate
+ *   POST  /api/admin/events/:id/slideshow/disable
+ *   PATCH /api/admin/events/:id/slideshow
+ *   PUT   /api/admin/settings/slideshow          (global preset + watermark + fit)
+ *
+ * Pins the contracts + the two regressions hit during the build:
+ *   - the events table has NO `updated_at` column, so these writes must NOT set
+ *     it (else every call 500s — that was the original "Generate" failure);
+ *   - the `slideshow` feature flag gates these endpoints (403 when off);
+ *   - PUT /admin/settings/slideshow validates + clamps every key.
+ */
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+
+process.env.NODE_ENV = 'test';
+process.env.TEST_DATABASE_PATH = path.join(
+  fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-show-admin-')), 'db.sqlite'
+);
+process.env.JWT_SECRET = process.env.JWT_SECRET || 'slideshow-test-secret';
+
+const express = require('express');
+const cookieParser = require('cookie-parser');
+const request = require('supertest');
+const { bootCrmDb, seedMinimal, assignAdminRole, mintAdminToken } = require('../integration/helpers/crmDb');
+const { invalidateFeatureFlagCache } = require('../../src/middleware/requireFeatureFlag');
+
+async function setFlag(db, key, on) {
+  await db('feature_flags').where({ key }).del();
+  await db('feature_flags').insert({ key, value: on ? 1 : 0 });
+  invalidateFeatureFlagCache();
+}
+
+async function insertEvent(db, adminId, over = {}) {
+  const base = {
+    slug: `ev-${Math.random().toString(16).slice(2)}`,
+    event_type: 'wedding',
+    event_name: 'Test Wedding',
+    event_date: '2026-05-29',
+    host_email: 'host@example.com',
+    admin_email: 'admin@example.com',
+    password_hash: 'x',
+    share_link: `/gallery/share-${Math.random().toString(16).slice(2)}`,
+    share_token: `st-${Math.random().toString(16).slice(2)}`,
+    expires_at: new Date(Date.now() + 7 * 24 * 3600 * 1000).toISOString(),
+    is_active: 1, is_archived: 0, is_draft: 0,
+    created_by: adminId,
+    created_at: new Date().toISOString(),
+    ...over,
+  };
+  const r = await db('events').insert(base).returning('id');
+  return r[0]?.id ?? r[0];
+}
+
+describe('admin Live Slideshow endpoints', () => {
+  let db; let cleanup; let app; let adminId; let token;
+
+  // Match slideshowPublic.test.js — bootCrmDb's full migration run intermittently
+  // exceeds Jest's default 5s `beforeAll` timeout on slower CI runners; raise
+  // it so this doesn't block PRs.
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ adminId } = await seedMinimal(db));
+    await assignAdminRole(db, adminId, 'super_admin');
+    token = mintAdminToken(adminId);
+
+    app = express();
+    app.use(express.json());
+    app.use(cookieParser());
+    app.use('/api/admin/events', require('../../src/routes/adminEvents'));
+    app.use('/api/admin/settings', require('../../src/routes/adminSettings'));
+    // eslint-disable-next-line no-unused-vars
+    app.use((err, req, res, next) => {
+      res.status(err.statusCode || err.status || 500).json({ error: err.message, code: err.code });
+    });
+  }, 30000);
+
+  afterAll(async () => { await cleanup(); });
+
+  beforeEach(async () => {
+    await db('events').del();
+    await db('app_settings').del();
+    await setFlag(db, 'slideshow', true);
+  });
+
+  const auth = (req) => req.set('Authorization', `Bearer ${token}`);
+
+  describe('generate / disable', () => {
+    it('mints a share token (no updated_at column → must not 500)', async () => {
+      const id = await insertEvent(db, adminId);
+      const res = await auth(request(app).post(`/api/admin/events/${id}/slideshow/generate`));
+      expect(res.status).toBe(200);
+      expect(typeof res.body.show_share_token).toBe('string');
+      expect(res.body.show_share_token).toHaveLength(64);
+      expect(res.body.slideshow_url).toContain(`/show/${res.body.show_share_token}`);
+      const row = await db('events').where({ id }).first();
+      expect(row.show_share_token).toBe(res.body.show_share_token);
+    });
+
+    it('regenerate rotates the token', async () => {
+      const id = await insertEvent(db, adminId, { show_share_token: 'old-token' });
+      const res = await auth(request(app).post(`/api/admin/events/${id}/slideshow/generate`));
+      expect(res.status).toBe(200);
+      expect(res.body.show_share_token).not.toBe('old-token');
+    });
+
+    it('disable nulls the token', async () => {
+      const id = await insertEvent(db, adminId, { show_share_token: 'live-token' });
+      const res = await auth(request(app).post(`/api/admin/events/${id}/slideshow/disable`));
+      expect(res.status).toBe(200);
+      const row = await db('events').where({ id }).first();
+      expect(row.show_share_token == null).toBe(true);
+    });
+
+    it('403 when the slideshow feature is off', async () => {
+      const id = await insertEvent(db, adminId);
+      await setFlag(db, 'slideshow', false);
+      const res = await auth(request(app).post(`/api/admin/events/${id}/slideshow/generate`));
+      expect(res.status).toBe(403);
+    });
+
+    it('401 without an admin token', async () => {
+      const id = await insertEvent(db, adminId);
+      const res = await request(app).post(`/api/admin/events/${id}/slideshow/generate`);
+      expect(res.status).toBe(401);
+    });
+  });
+
+  describe('PATCH /:id/slideshow', () => {
+    it('persists display + watermark mode (no updated_at column → must not 500)', async () => {
+      const id = await insertEvent(db, adminId);
+      const res = await auth(request(app).patch(`/api/admin/events/${id}/slideshow`)).send({
+        show_interval_ms: 9000,
+        show_transition: 'cut',
+        show_transition_ms: 300,
+        show_watermark: true,
+        show_colorfilter: 'bw',
+      });
+      expect(res.status).toBe(200);
+      const row = await db('events').where({ id }).first();
+      expect(row.show_interval_ms).toBe(9000);
+      expect(row.show_transition).toBe('cut');
+      expect(row.show_transition_ms).toBe(300);
+      expect(row.show_colorfilter).toBe('bw');
+      expect(row.show_watermark === 1 || row.show_watermark === true).toBe(true);
+    });
+
+    it('show_watermark=null sets the column to NULL (inherit global)', async () => {
+      const id = await insertEvent(db, adminId, { show_watermark: 1 });
+      const res = await auth(request(app).patch(`/api/admin/events/${id}/slideshow`)).send({ show_watermark: null });
+      expect(res.status).toBe(200);
+      const row = await db('events').where({ id }).first();
+      expect(row.show_watermark == null).toBe(true);
+    });
+
+    it('400 on an invalid transition', async () => {
+      const id = await insertEvent(db, adminId);
+      const res = await auth(request(app).patch(`/api/admin/events/${id}/slideshow`)).send({ show_transition: 'wormhole' });
+      expect(res.status).toBe(400);
+    });
+  });
+
+  describe('PUT /api/admin/settings/slideshow', () => {
+    const getSetting = async (key) => {
+      const row = await db('app_settings').where({ setting_key: key }).first();
+      return row ? JSON.parse(row.setting_value) : undefined;
+    };
+
+    it('persists the global preset + watermark + fit, clamping out-of-range values', async () => {
+      const res = await auth(request(app).put('/api/admin/settings/slideshow')).send({
+        slideshow_fit: 'contain',
+        slideshow_interval_ms: 9000,
+        slideshow_transition: 'slide',
+        slideshow_transition_ms: 250,
+        slideshow_colorfilter: 'sepia',
+        slideshow_watermark_enabled: true,
+        slideshow_watermark_opacity: 999,   // clamp -> 100
+        slideshow_watermark_size: 99,       // clamp -> 40
+      });
+      expect(res.status).toBe(200);
+      expect(await getSetting('slideshow_fit')).toBe('contain');
+      expect(await getSetting('slideshow_interval_ms')).toBe(9000);
+      expect(await getSetting('slideshow_transition')).toBe('slide');
+      expect(await getSetting('slideshow_transition_ms')).toBe(250);
+      expect(await getSetting('slideshow_colorfilter')).toBe('sepia');
+      expect(await getSetting('slideshow_watermark_enabled')).toBe(true);
+      expect(await getSetting('slideshow_watermark_opacity')).toBe(100);
+      expect(await getSetting('slideshow_watermark_size')).toBe(40);
+    });
+
+    it('coerces an invalid fit / transition to the safe default', async () => {
+      const res = await auth(request(app).put('/api/admin/settings/slideshow')).send({
+        slideshow_fit: 'banana',
+        slideshow_transition: 'wormhole',
+      });
+      expect(res.status).toBe(200);
+      expect(await getSetting('slideshow_fit')).toBe('cover');
+      expect(await getSetting('slideshow_transition')).toBe('crossfade');
+    });
+  });
+});

backend/__tests__/routes/slideshowPublic.test.js

@@ -0,0 +1,286 @@
+/**
+ * HTTP route tests for the PUBLIC Live Slideshow surface (backend/src/routes/gallery.js):
+ *   GET /:slug/show/:token/state    (cheap settings + photo-count poll)
+ *   GET /:slug/show/:token/session  (mints the gallery JWT + cookie)
+ *
+ * These pin the two pieces of logic where real bugs lived during the build:
+ *   - resolveSlideshow: the `slideshow` feature flag is a MASTER kill-switch
+ *     (404 when off), plus token / expiry / draft / archived / inactive guards.
+ *   - slideshowSettings: the watermark cascade (global look + per-event on/off),
+ *     image fit, and the fact that globals are read from `app_settings`
+ *     (regression for the getSetting→nonexistent-`settings`-table bug).
+ */
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+
+process.env.NODE_ENV = 'test';
+process.env.TEST_DATABASE_PATH = path.join(
+  fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-show-pub-')), 'db.sqlite'
+);
+process.env.JWT_SECRET = process.env.JWT_SECRET || 'slideshow-test-secret';
+
+const express = require('express');
+const cookieParser = require('cookie-parser');
+const request = require('supertest');
+const { bootCrmDb, seedMinimal } = require('../integration/helpers/crmDb');
+const { invalidateFeatureFlagCache } = require('../../src/middleware/requireFeatureFlag');
+const { invalidateSlideshowGlobals } = require('../../src/utils/slideshowGlobals');
+
+const SLUG = 'wedding-test';
+const TOKEN = 'show-tok-abcdef';
+
+async function setFlag(db, key, on) {
+  await db('feature_flags').where({ key }).del();
+  await db('feature_flags').insert({ key, value: on ? 1 : 0 });
+  invalidateFeatureFlagCache();
+}
+
+async function setSetting(db, key, value, type = 'slideshow') {
+  await db('app_settings').where({ setting_key: key }).del();
+  await db('app_settings').insert({ setting_key: key, setting_value: JSON.stringify(value), setting_type: type, updated_at: new Date() });
+}
+
+async function insertEvent(db, over = {}) {
+  const base = {
+    slug: SLUG,
+    event_type: 'wedding',
+    event_name: 'Test Wedding',
+    event_date: '2026-05-29',
+    host_email: 'host@example.com',
+    admin_email: 'admin@example.com',
+    password_hash: 'x',
+    share_link: `/gallery/${SLUG}/share-${Math.random().toString(16).slice(2)}`,
+    share_token: `st-${Math.random().toString(16).slice(2)}`,
+    expires_at: new Date(Date.now() + 7 * 24 * 3600 * 1000).toISOString(),
+    is_active: 1,
+    is_archived: 0,
+    is_draft: 0,
+    show_share_token: TOKEN,
+    created_at: new Date().toISOString(),
+    ...over,
+  };
+  const r = await db('events').insert(base).returning('id');
+  return r[0]?.id ?? r[0];
+}
+
+describe('public Live Slideshow routes', () => {
+  let db; let cleanup; let app;
+
+  // bootCrmDb runs the full migration set against a fresh SQLite file, which
+  // takes <2s locally but has been observed to exceed Jest's default 5s
+  // `beforeAll` timeout on slower GitHub Actions runners (~5.4s — runner-to-
+  // runner I/O variance). Raise the hook timeout so this doesn't intermittently
+  // block PRs on CI; doesn't affect happy-path local runs.
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    await seedMinimal(db);
+    app = express();
+    app.use(express.json());
+    app.use(cookieParser());
+    // Both routers mount under /api/gallery in production; the display-only
+    // guard lives on download routes (gallery) + the feedback POST (galleryFeedback).
+    app.use('/api/gallery', require('../../src/routes/gallery'));
+    app.use('/api/gallery', require('../../src/routes/galleryFeedback'));
+    // eslint-disable-next-line no-unused-vars
+    app.use((err, req, res, next) => {
+      res.status(err.statusCode || err.status || 500).json({ error: err.message, code: err.code });
+    });
+  }, 30000);
+
+  afterAll(async () => { await cleanup(); });
+
+  beforeEach(async () => {
+    await db('events').del();
+    await db('app_settings').del();
+    await db('feature_flags').del();
+    invalidateFeatureFlagCache();
+    invalidateSlideshowGlobals();
+    await setFlag(db, 'slideshow', true);
+  });
+
+  const stateUrl = (token = TOKEN) => `/api/gallery/${SLUG}/show/${token}/state`;
+
+  describe('resolveSlideshow guards', () => {
+    it('200 + per-event display settings on a live link', async () => {
+      await insertEvent(db, {
+        show_interval_ms: 8000,
+        show_transition: 'kenburns',
+        show_transition_ms: 1200,
+        show_colorfilter: 'sepia',
+      });
+      const res = await request(app).get(stateUrl());
+      expect(res.status).toBe(200);
+      expect(res.body).toMatchObject({
+        interval_ms: 8000,
+        transition: 'kenburns',
+        transition_ms: 1200,
+        colorfilter: 'sepia',
+        fit: 'cover',
+        photo_count: 0,
+        watermark: null,
+      });
+    });
+
+    it('404 when the slideshow feature flag is OFF (master kill-switch)', async () => {
+      await insertEvent(db);
+      await setFlag(db, 'slideshow', false);
+      const res = await request(app).get(stateUrl());
+      expect(res.status).toBe(404);
+    });
+
+    it('404 on an unknown token', async () => {
+      await insertEvent(db);
+      const res = await request(app).get(stateUrl('not-the-token'));
+      expect(res.status).toBe(404);
+    });
+
+    it('404 when the share token is null (link never minted / disabled)', async () => {
+      await insertEvent(db, { show_share_token: null });
+      const res = await request(app).get(stateUrl());
+      expect(res.status).toBe(404);
+    });
+
+    it('404 when the event has expired', async () => {
+      await insertEvent(db, { expires_at: new Date(Date.now() - 1000).toISOString() });
+      const res = await request(app).get(stateUrl());
+      expect(res.status).toBe(404);
+    });
+
+    it('404 when the event is a draft', async () => {
+      await insertEvent(db, { is_draft: 1 });
+      const res = await request(app).get(stateUrl());
+      expect(res.status).toBe(404);
+    });
+
+    it('404 when the event is archived', async () => {
+      await insertEvent(db, { is_archived: 1 });
+      const res = await request(app).get(stateUrl());
+      expect(res.status).toBe(404);
+    });
+  });
+
+  describe('slideshowSettings — image fit (global, live)', () => {
+    it('reflects the global slideshow_fit setting', async () => {
+      await insertEvent(db);
+      await setSetting(db, 'slideshow_fit', 'contain');
+      const res = await request(app).get(stateUrl());
+      expect(res.status).toBe(200);
+      expect(res.body.fit).toBe('contain');
+    });
+  });
+
+  describe('slideshowSettings — watermark cascade (global look + per-event on/off)', () => {
+    async function enableGlobalWatermark() {
+      await setSetting(db, 'slideshow_watermark_enabled', true);
+      await setSetting(db, 'slideshow_watermark_source', 'logo');
+      await setSetting(db, 'slideshow_watermark_position', 'top-left');
+      await setSetting(db, 'slideshow_watermark_opacity', 40);
+      await setSetting(db, 'slideshow_watermark_style', 'original');
+      await setSetting(db, 'slideshow_watermark_size', 9);
+      await setSetting(db, 'branding_logo_url', '/uploads/logos/light.svg', 'branding');
+    }
+
+    it('inherits the global watermark when show_watermark is NULL', async () => {
+      await insertEvent(db, { show_watermark: null });
+      await enableGlobalWatermark();
+      const res = await request(app).get(stateUrl());
+      expect(res.body.watermark).toEqual({
+        url: '/uploads/logos/light.svg',
+        position: 'top-left',
+        opacity: 40,
+        style: 'original',
+        size: 9,
+      });
+    });
+
+    it('resolves the dark logo / favicon sources', async () => {
+      await insertEvent(db, { show_watermark: null });
+      await enableGlobalWatermark();
+      await setSetting(db, 'slideshow_watermark_source', 'favicon');
+      await setSetting(db, 'branding_favicon_url', '/uploads/favicons/f.png', 'branding');
+      const res = await request(app).get(stateUrl());
+      expect(res.body.watermark.url).toBe('/uploads/favicons/f.png');
+    });
+
+    it('per-event OFF override hides the watermark even when the global is on', async () => {
+      await insertEvent(db, { show_watermark: 0 });
+      await enableGlobalWatermark();
+      const res = await request(app).get(stateUrl());
+      expect(res.body.watermark).toBeNull();
+    });
+
+    it('per-event ON override shows the watermark even when the global is off', async () => {
+      await insertEvent(db, { show_watermark: 1 });
+      await enableGlobalWatermark();
+      await setSetting(db, 'slideshow_watermark_enabled', false);
+      const res = await request(app).get(stateUrl());
+      expect(res.body.watermark).not.toBeNull();
+      expect(res.body.watermark.url).toBe('/uploads/logos/light.svg');
+    });
+
+    it('null when enabled but no logo URL is configured', async () => {
+      await insertEvent(db, { show_watermark: null });
+      await setSetting(db, 'slideshow_watermark_enabled', true);
+      // no branding_logo_url set
+      const res = await request(app).get(stateUrl());
+      expect(res.body.watermark).toBeNull();
+    });
+  });
+
+  describe('display-only token guards (#646 review concern 1)', () => {
+    // Mint a real slideshow JWT, then prove it is denied on the
+    // download / upload / feedback routes (display-only contract).
+    async function slideshowJwt() {
+      await insertEvent(db);
+      const res = await request(app).get(`/api/gallery/${SLUG}/show/${TOKEN}/session`);
+      expect(res.status).toBe(200);
+      return res.body.token;
+    }
+
+    it('403 on whole-gallery download', async () => {
+      const jwt = await slideshowJwt();
+      const res = await request(app).get(`/api/gallery/${SLUG}/download-all`).set('Authorization', `Bearer ${jwt}`);
+      expect(res.status).toBe(403);
+    });
+
+    it('403 on single-photo download', async () => {
+      const jwt = await slideshowJwt();
+      const res = await request(app).get(`/api/gallery/${SLUG}/download/1`).set('Authorization', `Bearer ${jwt}`);
+      expect(res.status).toBe(403);
+    });
+
+    it('403 on bulk download-selected', async () => {
+      const jwt = await slideshowJwt();
+      const res = await request(app).post(`/api/gallery/${SLUG}/download-selected`).set('Authorization', `Bearer ${jwt}`).send({ photoIds: [1] });
+      expect(res.status).toBe(403);
+    });
+
+    it('403 on feedback POST', async () => {
+      const jwt = await slideshowJwt();
+      const res = await request(app).post(`/api/gallery/${SLUG}/photos/1/feedback`).set('Authorization', `Bearer ${jwt}`).send({ feedback_type: 'like' });
+      expect(res.status).toBe(403);
+    });
+  });
+
+  describe('GET /session', () => {
+    it('mints a token + sets the gallery cookie on a valid link', async () => {
+      await insertEvent(db);
+      const res = await request(app).get(`/api/gallery/${SLUG}/show/${TOKEN}/session`);
+      expect(res.status).toBe(200);
+      expect(typeof res.body.token).toBe('string');
+      expect(res.body.token.length).toBeGreaterThan(20);
+      expect(res.body.event).toMatchObject({ event_name: 'Test Wedding' });
+      expect(res.body).toHaveProperty('settings');
+      expect(res.body).toHaveProperty('photo_count', 0);
+      expect(res.headers['set-cookie']).toBeDefined();
+    });
+
+    it('404 when the feature is off', async () => {
+      await insertEvent(db);
+      await setFlag(db, 'slideshow', false);
+      const res = await request(app).get(`/api/gallery/${SLUG}/show/${TOKEN}/session`);
+      expect(res.status).toBe(404);
+    });
+  });
+});

backend/__tests__/services/backupIntegrityService.test.js

@@ -0,0 +1,219 @@
+/**
+ * Verifies the backup-integrity check covers every CRM document
+ * artefact column and correctly buckets each row into:
+ *   - verifiedOk      — file exists AND hash matches (when hash is stored)
+ *   - missing         — `*_path` set but file is not on disk
+ *   - hashMismatches  — file exists but bytes don't hash to `*_sha256`
+ *   - existsButNoHash — file exists, no `*_sha256` column for this row
+ *
+ * Uses the CRM integration harness (bootCrmDb) so the schema +
+ * STORAGE_PATH wiring exactly mirrors production behaviour.
+ *
+ * Background: this service is the diagnostic for the
+ * `storage/business-docs/` gap fixed in the same PR — without it,
+ * a restored install would have audit-trail columns referencing
+ * files that no longer exist, but admins would have no way to see
+ * the breakage until a customer asked for their contract back.
+ */
+
+const fs = require('fs');
+const path = require('path');
+const crypto = require('crypto');
+
+const { bootCrmDb, seedMinimal } = require('../integration/helpers/crmDb');
+
+jest.setTimeout(30000);
+
+describe('backupIntegrityService.verifyDocumentArtefacts', () => {
+  let db;
+  let cleanup;
+  let customerId;
+  let storagePath;
+  let backupIntegrityService;
+
+  function seedFile(relPath, content) {
+    const abs = path.join(storagePath, relPath);
+    fs.mkdirSync(path.dirname(abs), { recursive: true });
+    fs.writeFileSync(abs, content);
+    return { abs, relPath, sha: sha256(content) };
+  }
+
+  function sha256(content) {
+    return crypto.createHash('sha256').update(content).digest('hex');
+  }
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ customerId } = await seedMinimal(db));
+    storagePath = process.env.STORAGE_PATH;
+    backupIntegrityService = require('../../src/services/backupIntegrityService');
+  }, 120000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  beforeEach(async () => {
+    // Wipe CRM rows between tests so each scenario sees a clean slate.
+    // Order matters: child tables before parents.
+    await db('invoice_line_items').del().catch(() => {});
+    await db('invoice_payment_log').del().catch(() => {});
+    await db('invoices').del().catch(() => {});
+    await db('quote_line_items').del().catch(() => {});
+    await db('quotes').del().catch(() => {});
+    await db('contracts').del().catch(() => {});
+  });
+
+  it('returns an empty report when no documents reference any path', async () => {
+    const report = await backupIntegrityService.verifyDocumentArtefacts();
+    expect(report.summary.totalRows).toBe(0);
+    expect(report.summary.verifiedOk).toBe(0);
+    expect(report.missing).toEqual([]);
+    expect(report.hashMismatches).toEqual([]);
+    expect(report.existsButNoHash).toEqual([]);
+    expect(report.scannedAt).toMatch(/^\d{4}-\d{2}-\d{2}T/);
+    expect(report.scopes).toEqual(expect.arrayContaining(['quote', 'contract', 'contract-signature', 'invoice']));
+  });
+
+  it('flags a contract whose signed_pdf_path file is missing', async () => {
+    // Reference a file that we deliberately never create on disk.
+    // knex's `.returning('id')` returns `[{ id: N }]` on Postgres and
+    // newer SQLite, but `[N]` (plain int) on some SQLite versions —
+    // unwrap both shapes the same way the crmDb test harness does.
+    const inserted = await db('contracts').insert({
+      customer_account_id: customerId,
+      contract_number: 'C-2026-MISSING',
+      status: 'sent',
+      issue_date: '2026-01-01',
+      signed_pdf_path: 'business-docs/contract/2026/C-2026-MISSING.pdf',
+      created_at: new Date(),
+    }).returning('id');
+    const contractId = typeof inserted[0] === 'object' ? inserted[0].id : inserted[0];
+
+    const report = await backupIntegrityService.verifyDocumentArtefacts({ scope: ['contract'] });
+    const hit = report.missing.find((m) => m.rowId === contractId);
+    expect(hit).toMatchObject({
+      table: 'contracts',
+      column: 'signed_pdf_path',
+      expectedPath: 'business-docs/contract/2026/C-2026-MISSING.pdf',
+    });
+    expect(report.summary.missingFiles).toBe(1);
+  });
+
+  it('verifies a contract whose file exists AND hash matches', async () => {
+    const { relPath, sha } = seedFile(
+      'business-docs/contract/2026/C-2026-OK.pdf',
+      'this is the signed contract content',
+    );
+    await db('contracts').insert({
+      customer_account_id: customerId,
+      contract_number: 'C-2026-OK',
+      status: 'fully_signed',
+      issue_date: '2026-01-01',
+      signed_pdf_path: relPath,
+      signed_pdf_sha256: sha,
+      created_at: new Date(),
+    });
+
+    const report = await backupIntegrityService.verifyDocumentArtefacts({ scope: ['contract'] });
+    expect(report.summary.verifiedOk).toBeGreaterThanOrEqual(1);
+    expect(report.summary.missingFiles).toBe(0);
+    expect(report.summary.hashMismatches).toBe(0);
+  });
+
+  it('flags a hash mismatch when the file exists but bytes differ from signed_pdf_sha256', async () => {
+    const { relPath } = seedFile(
+      'business-docs/contract/2026/C-2026-TAMPER.pdf',
+      'tampered bytes on disk',
+    );
+    const inserted = await db('contracts').insert({
+      customer_account_id: customerId,
+      contract_number: 'C-2026-TAMPER',
+      status: 'fully_signed',
+      issue_date: '2026-01-01',
+      signed_pdf_path: relPath,
+      // Hash for completely different content — simulates tampering or
+      // bit-rot between sign-time and now.
+      signed_pdf_sha256: sha256('the ORIGINAL bytes the customer signed'),
+      created_at: new Date(),
+    }).returning('id');
+    const contractId = typeof inserted[0] === 'object' ? inserted[0].id : inserted[0];
+
+    const report = await backupIntegrityService.verifyDocumentArtefacts({ scope: ['contract'] });
+    const hit = report.hashMismatches.find((m) => m.rowId === contractId);
+    expect(hit).toBeDefined();
+    expect(hit.expectedSha).not.toBe(hit.actualSha);
+    expect(hit.column).toBe('signed_pdf_path');
+  });
+
+  it('buckets signature PNGs into existsButNoHash (no hash column)', async () => {
+    const { relPath } = seedFile(
+      'business-docs/contract/signatures/99/customer-1700000000000.png',
+      '\x89PNG\r\n\x1a\n', // doesn't have to be a real PNG, just bytes
+    );
+    await db('contracts').insert({
+      customer_account_id: customerId,
+      contract_number: 'C-2026-SIG',
+      status: 'fully_signed',
+      issue_date: '2026-01-01',
+      signed_customer_signature_path: relPath,
+      created_at: new Date(),
+    });
+
+    const report = await backupIntegrityService.verifyDocumentArtefacts({
+      scope: ['contract-signature'],
+    });
+    expect(report.summary.existsButNoHash).toBeGreaterThanOrEqual(1);
+    expect(report.summary.verifiedOk).toBe(0); // no hash → not "verified ok"
+    expect(report.summary.missingFiles).toBe(0);
+    const hit = report.existsButNoHash.find((r) => r.column === 'signed_customer_signature_path');
+    expect(hit).toBeDefined();
+  });
+
+  it('respects the scope filter — contract scope skips quote/invoice tables', async () => {
+    // Seed an invoice with a missing pdf_path AND a contract with a
+    // missing signed_pdf_path. Scoping to contract should only flag
+    // the contract.
+    await db('invoices').insert({
+      customer_account_id: customerId,
+      invoice_number: 'INV-2026-SCOPE',
+      status: 'sent',
+      pdf_path: 'business-docs/invoice/2026/INV-2026-SCOPE.pdf',
+      issue_date: '2026-01-01',
+      due_date: '2026-01-31',
+      created_at: new Date(),
+    });
+    await db('contracts').insert({
+      customer_account_id: customerId,
+      contract_number: 'C-2026-SCOPE',
+      status: 'sent',
+      issue_date: '2026-01-01',
+      signed_pdf_path: 'business-docs/contract/2026/C-2026-SCOPE.pdf',
+      created_at: new Date(),
+    });
+
+    const report = await backupIntegrityService.verifyDocumentArtefacts({ scope: ['contract'] });
+    expect(report.scopes).toEqual(['contract']);
+    expect(report.missing.every((m) => m.table === 'contracts')).toBe(true);
+    expect(report.missing.some((m) => m.table === 'invoices')).toBe(false);
+  });
+
+  it('covers invoices.imported_pdf_path (admin-uploaded historical scans)', async () => {
+    // Imported invoices are the most catastrophic case — there's no
+    // renderer that can reproduce them. Verifier must check this column
+    // alongside invoices.pdf_path.
+    await db('invoices').insert({
+      customer_account_id: customerId,
+      invoice_number: 'IMP-2025-001',
+      status: 'sent',
+      imported_pdf_path: 'business-docs/invoice-imports/2025/legacy.pdf',
+      issue_date: '2025-06-01',
+      due_date: '2025-07-01',
+      created_at: new Date(),
+    });
+
+    const report = await backupIntegrityService.verifyDocumentArtefacts({ scope: ['invoice'] });
+    const hit = report.missing.find((m) => m.column === 'imported_pdf_path');
+    expect(hit).toBeDefined();
+  });
+});

backend/__tests__/services/billingRecipients.test.js

@@ -0,0 +1,105 @@
+/**
+ * Unit tests for the recipient resolver that routes invoice / Storno /
+ * reminder emails to a bookkeeper address when one is configured,
+ * while keeping the decision-maker (primary email) on CC.
+ *
+ * Pure helper, no DB, no side effects.
+ */
+
+const { resolveBillingRecipients } = require('../../src/services/_billingRecipients');
+
+describe('resolveBillingRecipients', () => {
+  it('routes to the primary email when no billing_email is set', () => {
+    expect(resolveBillingRecipients({ email: 'bride@example.com' }, null))
+      .toEqual({ to: 'bride@example.com', cc: undefined });
+  });
+
+  it('routes to billing_email and CCs the primary when both are set', () => {
+    expect(resolveBillingRecipients({
+      email: 'bride@example.com',
+      billing_email: 'books@example.com',
+    }, null)).toEqual({
+      to: 'books@example.com',
+      cc: ['bride@example.com'],
+    });
+  });
+
+  it('folds the per-document cc_pdf_email into the CC list', () => {
+    expect(resolveBillingRecipients({
+      email: 'bride@example.com',
+      billing_email: 'books@example.com',
+    }, 'advisor@example.com')).toEqual({
+      to: 'books@example.com',
+      cc: ['bride@example.com', 'advisor@example.com'],
+    });
+  });
+
+  it('uses cc_pdf_email alone when there is no billing_email', () => {
+    expect(resolveBillingRecipients({
+      email: 'bride@example.com',
+    }, 'advisor@example.com')).toEqual({
+      to: 'bride@example.com',
+      cc: ['advisor@example.com'],
+    });
+  });
+
+  it('does not CC the primary onto itself when billing_email equals email', () => {
+    expect(resolveBillingRecipients({
+      email: 'same@example.com',
+      billing_email: 'same@example.com',
+    }, null)).toEqual({
+      to: 'same@example.com',
+      cc: undefined,
+    });
+  });
+
+  it('is case-insensitive when deduping addresses', () => {
+    // RFC 5321 says mailbox local-parts MAY be case sensitive, but in
+    // practice every mail server treats them as insensitive — and the
+    // admin entering "BRIDE@example.com" in one field and
+    // "bride@example.com" in another should not produce two copies.
+    expect(resolveBillingRecipients({
+      email: 'BRIDE@example.com',
+      billing_email: 'books@example.com',
+    }, 'bride@example.com')).toEqual({
+      to: 'books@example.com',
+      cc: ['BRIDE@example.com'],
+    });
+  });
+
+  it('trims whitespace around the addresses', () => {
+    expect(resolveBillingRecipients({
+      email: '  bride@example.com  ',
+      billing_email: '  books@example.com\n',
+    }, '\tadvisor@example.com ')).toEqual({
+      to: 'books@example.com',
+      cc: ['bride@example.com', 'advisor@example.com'],
+    });
+  });
+
+  it('treats empty-string billing_email as not set', () => {
+    expect(resolveBillingRecipients({
+      email: 'bride@example.com',
+      billing_email: '',
+    }, null)).toEqual({
+      to: 'bride@example.com',
+      cc: undefined,
+    });
+  });
+
+  it('returns an empty To when neither email nor billing_email is set', () => {
+    // Caller is responsible for surfacing this — emailProcessor's own
+    // validation will reject the empty recipient. The helper just
+    // refuses to crash.
+    expect(resolveBillingRecipients({}, null))
+      .toEqual({ to: '', cc: undefined });
+  });
+
+  it('tolerates a null customer without throwing', () => {
+    // Per-doc cc alone is never promoted to To: — it stays
+    // supplemental. A missing customer is a caller bug; we just refuse
+    // to crash and let emailProcessor reject the empty recipient.
+    expect(resolveBillingRecipients(null, 'a@b.com'))
+      .toEqual({ to: '', cc: undefined });
+  });
+});

backend/__tests__/services/contractService.test.js

@@ -0,0 +1,109 @@
+/**
+ * Unit tests for the pure helpers in contractService (migration 130).
+ *
+ * The DB-bound CRUD paths (createContract / sendContract /
+ * recordCustomerSignature / attachSignedPdfUpload) are exercised in
+ * manual QA via the admin + public routes. This file covers the
+ * deterministic helpers so regressions in placeholder substitution or
+ * section ordering surface before they leak into a rendered contract.
+ *
+ * The service pulls in DB-bound peers (businessProfileService,
+ * pdfService, emailProcessor) at the top level. We stub the DB layer
+ * + the side-effect peers so the require chain doesn't try to connect
+ * to anything; the helpers under test are pure.
+ */
+
+const path = require('path');
+const servicePath = path.join(__dirname, '..', '..', 'src', 'services', 'contractService');
+
+jest.mock('../../src/database/db', () => ({
+  db: jest.fn(),
+  logActivity: jest.fn(),
+  withRetry: (fn) => fn(),
+}));
+jest.mock('../../src/services/businessProfileService', () => ({
+  getProfile: jest.fn(),
+}));
+jest.mock('../../src/services/pdfService', () => ({
+  renderContractToBuffer: jest.fn(),
+}));
+jest.mock('../../src/services/emailProcessor', () => ({
+  queueEmail: jest.fn(),
+}));
+jest.mock('../../src/utils/appSettings', () => ({
+  getAppSetting: jest.fn(),
+}));
+jest.mock('../../src/utils/frontendUrl', () => ({
+  getFrontendBaseUrl: jest.fn(),
+}));
+
+const { _internal } = require(servicePath);
+const { renderTemplatedBody, SECTIONS_ORDER } = _internal;
+
+describe('renderTemplatedBody', () => {
+  it('substitutes simple {{var}} placeholders', () => {
+    expect(renderTemplatedBody(
+      'Hello {{name}}, due in {{net_days}} days.',
+      { name: 'Alice', net_days: 30 },
+    )).toBe('Hello Alice, due in 30 days.');
+  });
+
+  it('preserves unknown placeholders literally so admins notice missing fields', () => {
+    expect(renderTemplatedBody(
+      'Bill from {{issuer}} to {{customer_name}}',
+      { issuer: 'PicPeak GmbH' },
+    )).toBe('Bill from PicPeak GmbH to {{customer_name}}');
+  });
+
+  it('keeps {{#if var}}…{{/if}} block when var is truthy', () => {
+    expect(renderTemplatedBody(
+      '{{#if has_skonto}}Skonto: {{pct}} %{{/if}} on early payment',
+      { has_skonto: true, pct: 2 },
+    )).toBe('Skonto: 2 % on early payment');
+  });
+
+  it('drops {{#if var}}…{{/if}} block when var is falsy', () => {
+    expect(renderTemplatedBody(
+      'Net {{net_days}} d{{#if has_skonto}}, Skonto {{pct}}%{{/if}}.',
+      { net_days: 30, has_skonto: false, pct: 2 },
+    )).toBe('Net 30 d.');
+  });
+
+  it('treats missing variables in {{#if}} as falsy', () => {
+    expect(renderTemplatedBody(
+      'A{{#if missing}}B{{/if}}C',
+      { unrelated: 'foo' },
+    )).toBe('AC');
+  });
+
+  it('handles empty strings and missing variables map gracefully', () => {
+    expect(renderTemplatedBody('', { x: 1 })).toBe('');
+    expect(renderTemplatedBody('plain text', null)).toBe('plain text');
+    expect(renderTemplatedBody('plain text', undefined)).toBe('plain text');
+  });
+
+  it('passes through non-string input unchanged', () => {
+    expect(renderTemplatedBody(null, { x: 1 })).toBeNull();
+    expect(renderTemplatedBody(undefined, { x: 1 })).toBeUndefined();
+  });
+
+  it('substitutes numeric and falsy variable values as strings', () => {
+    expect(renderTemplatedBody('count: {{n}}', { n: 0 })).toBe('count: 0');
+    expect(renderTemplatedBody('flag: {{flag}}', { flag: false })).toBe('flag: false');
+  });
+});
+
+describe('SECTIONS_ORDER', () => {
+  it('matches the canonical six-section order locked in the spec', () => {
+    expect(SECTIONS_ORDER).toEqual([
+      'basics', 'scope', 'privacy', 'commercial', 'nda', 'closing',
+    ]);
+  });
+
+  it('stays in sync with contractBlocksService.ALLOWED_SECTIONS', () => {
+    const blocksService = require('../../src/services/contractBlocksService');
+    expect([...SECTIONS_ORDER].sort()).toEqual(
+      [...blocksService.ALLOWED_SECTIONS].sort(),
+    );
+  });
+});

backend/__tests__/services/customScriptSanitiser.test.js

@@ -0,0 +1,100 @@
+/**
+ * Tests for the custom-tracker HTML sanitiser (#663 Phase 1).
+ *
+ * The field accepts admin-pasted `<head>`-style snippets for arbitrary
+ * trackers (Plausible / Matomo / Pirsch / GA4 / GoatCounter / Fathom /
+ * Cloudflare Web Analytics). We sanitise on save with a narrow allowlist
+ * tuned for tracker scripts — defence-in-depth, even though the field is
+ * admin-only.
+ */
+
+const { sanitizeTrackerSnippet } = require('../../src/services/trackers/customScriptSanitiser');
+
+describe('sanitizeTrackerSnippet (#663)', () => {
+  test('returns empty string for non-string / empty / whitespace input', () => {
+    expect(sanitizeTrackerSnippet(null)).toBe('');
+    expect(sanitizeTrackerSnippet(undefined)).toBe('');
+    expect(sanitizeTrackerSnippet(42)).toBe('');
+    expect(sanitizeTrackerSnippet('')).toBe('');
+    expect(sanitizeTrackerSnippet('   ')).toBe('');
+  });
+
+  test('passes through a Plausible-style script tag with data-domain', () => {
+    const input = '<script defer data-domain="example.com" src="https://plausible.io/js/script.js"></script>';
+    const out = sanitizeTrackerSnippet(input);
+    expect(out).toContain('src="https://plausible.io/js/script.js"');
+    expect(out).toContain('data-domain="example.com"');
+    expect(out).toContain('defer');
+  });
+
+  test('passes through a Umami-style script with data-website-id', () => {
+    const input = '<script async defer src="https://analytics.example.com/script.js" data-website-id="aaa-bbb-ccc"></script>';
+    const out = sanitizeTrackerSnippet(input);
+    expect(out).toContain('src="https://analytics.example.com/script.js"');
+    expect(out).toContain('data-website-id="aaa-bbb-ccc"');
+  });
+
+  test('passes through inline script body unchanged', () => {
+    const input = '<script>window.GA = "x"; window.tracker = function() { console.log("init"); };</script>';
+    const out = sanitizeTrackerSnippet(input);
+    expect(out).toContain('window.GA = "x"');
+    expect(out).toContain('console.log("init")');
+  });
+
+  test('allows <noscript> fallback', () => {
+    const input = '<noscript><img src="https://t.example/?nojs=1" /></noscript>';
+    const out = sanitizeTrackerSnippet(input);
+    expect(out).toContain('<noscript>');
+  });
+
+  test('allows <link rel="preconnect"> and <link rel="dns-prefetch">', () => {
+    const out = sanitizeTrackerSnippet(
+      '<link rel="preconnect" href="https://t.example.com">'
+      + '<link rel="dns-prefetch" href="https://t.example.com">',
+    );
+    expect(out).toContain('rel="preconnect"');
+    expect(out).toContain('rel="dns-prefetch"');
+    expect(out).toContain('href="https://t.example.com"');
+  });
+
+  test('strips <link rel="stylesheet"> (not tracker-related)', () => {
+    const out = sanitizeTrackerSnippet('<link rel="stylesheet" href="https://evil.example/x.css">');
+    expect(out).not.toContain('stylesheet');
+    expect(out).not.toContain('href');
+  });
+
+  test('strips disallowed tags entirely', () => {
+    const input = '<div><iframe src="https://evil.example/x.html"></iframe><h1>hi</h1></div>';
+    const out = sanitizeTrackerSnippet(input);
+    expect(out).not.toContain('iframe');
+    expect(out).not.toContain('<div');
+    expect(out).not.toContain('<h1');
+  });
+
+  test('strips javascript: URLs from script src', () => {
+    const input = '<script src="javascript:alert(1)"></script>';
+    const out = sanitizeTrackerSnippet(input);
+    expect(out).not.toContain('javascript:');
+  });
+
+  test('strips data: URLs from script src', () => {
+    const input = '<script src="data:text/javascript,alert(1)"></script>';
+    const out = sanitizeTrackerSnippet(input);
+    expect(out).not.toContain('data:text/javascript');
+  });
+
+  test('strips on* event-handler attributes (defence-in-depth)', () => {
+    // event-handler attrs are not in our allowlist; sanitize-html strips them.
+    const input = '<script src="https://t.example/x.js" onload="evil()"></script>';
+    const out = sanitizeTrackerSnippet(input);
+    expect(out).not.toContain('onload');
+    expect(out).toContain('src="https://t.example/x.js"');
+  });
+
+  test('returns empty string on unparseable input rather than throwing', () => {
+    // sanitize-html is fault-tolerant — pass deliberately malformed and
+    // confirm we don't blow up.
+    expect(typeof sanitizeTrackerSnippet('<<<>>>')).toBe('string');
+    expect(typeof sanitizeTrackerSnippet('<script')).toBe('string');
+  });
+});

backend/__tests__/services/customerAccountsService.passive.test.js

@@ -0,0 +1,213 @@
+/**
+ * Tests for the passive-customer surface:
+ *
+ *   - createDirect inserts a customer with password_hash=null,
+ *     queueEmail is never called, race-guard rejects duplicates
+ *   - createInvitation allows passing through when the existing
+ *     customer is passive (promotion path); still rejects when the
+ *     existing customer is active (real duplicate)
+ *   - acceptInvitation upserts into an existing passive customer
+ *     row (preserving id) when one exists; inserts a fresh row
+ *     otherwise; still rejects when the existing customer is active
+ *
+ * Pure unit tests — db is mocked via a thenable chain so we can
+ * inspect every insert / update payload without spinning up SQLite.
+ */
+
+// ----- mock db chain --------------------------------------------------
+//
+// We need fine-grained control over which row each table-name returns
+// for `.first()`, what `.insert(...).returning('id')` resolves to, and
+// what `.update(...)` resolves to. The chain is a thenable proxy that
+// terminates on the call we care about.
+
+const tableSeeds = {};        // table → first-row return value
+const insertResults = {};     // table → array of inserted rows (auto-id from a counter)
+const updateCalls = [];       // [{ table, where, updates }]
+let nextInsertId = 1000;
+
+function resetMockDb() {
+  for (const k of Object.keys(tableSeeds)) delete tableSeeds[k];
+  for (const k of Object.keys(insertResults)) delete insertResults[k];
+  updateCalls.length = 0;
+  nextInsertId = 1000;
+}
+
+function makeChain(tableName) {
+  const chain = {
+    _whereClauses: [],
+    where(...args) { this._whereClauses.push(args); return this; },
+    whereNull() { return this; },
+    whereNot() { return this; },
+    andWhere() { return this; },
+    orderBy() { return this; },
+    leftJoin() { return this; },
+    groupBy() { return this; },
+    select(...args) {
+      // listCustomers / search → return seeded array
+      const seeded = tableSeeds[`${tableName}__select`];
+      return Promise.resolve(seeded || []);
+    },
+    first() {
+      const seeded = tableSeeds[tableName];
+      return Promise.resolve(seeded);
+    },
+    insert(payload) {
+      const id = nextInsertId++;
+      insertResults[tableName] = insertResults[tableName] || [];
+      insertResults[tableName].push({ ...payload, id });
+      const result = { id };
+      return {
+        returning() { return Promise.resolve([result]); },
+        then(resolve) { return Promise.resolve(undefined).then(resolve); },
+      };
+    },
+    update(updates) {
+      updateCalls.push({ table: tableName, where: this._whereClauses, updates });
+      return Promise.resolve(1);
+    },
+    del() { return Promise.resolve(1); },
+    raw() { return this; },
+  };
+  return chain;
+}
+
+const mockDbFn = jest.fn((tableName) => makeChain(tableName));
+mockDbFn.raw = jest.fn();
+mockDbFn.transaction = async (cb) => cb(mockDbFn);
+
+jest.mock('../../src/database/db', () => ({
+  db: mockDbFn,
+  withRetry: jest.fn(async (fn) => fn()),
+  logActivity: jest.fn(async () => {}),
+}));
+
+const mockQueueEmail = jest.fn(async () => {});
+jest.mock('../../src/services/emailProcessor', () => ({
+  queueEmail: mockQueueEmail,
+}));
+
+jest.mock('../../src/services/businessProfileService', () => ({
+  getProfile: jest.fn(async () => ({
+    profile: { default_locale: 'de' },
+    bankAccounts: [],
+  })),
+}));
+
+jest.mock('../../src/utils/frontendUrl', () => ({
+  getFrontendBaseUrl: jest.fn(async () => 'https://test.example'),
+}));
+
+jest.mock('../../src/utils/logger', () => ({
+  info: jest.fn(), warn: jest.fn(), error: jest.fn(), debug: jest.fn(),
+}));
+
+const customerAccountsService = require('../../src/services/customerAccountsService');
+
+beforeEach(() => {
+  resetMockDb();
+  mockQueueEmail.mockClear();
+});
+
+// --------------------------------------------------------------------
+// createDirect
+// --------------------------------------------------------------------
+
+describe('createDirect', () => {
+  it('inserts a customer with password_hash=null, is_active=true', async () => {
+    tableSeeds.customer_accounts = undefined; // no duplicate
+    const result = await customerAccountsService.createDirect({
+      email: 'test@example.com',
+      prefill: { first_name: 'Anna', company_name: 'ACME GmbH' },
+      createdByAdminId: 5,
+    });
+    expect(result.id).toBeDefined();
+    const inserted = insertResults.customer_accounts[0];
+    expect(inserted.email).toBe('test@example.com');
+    expect(inserted.password_hash).toBeNull();
+    expect(inserted.created_by_admin_id).toBe(5);
+    expect(inserted.first_name).toBe('Anna');
+    expect(inserted.company_name).toBe('ACME GmbH');
+    // is_active should be truthy (could be 1 or true depending on formatBoolean impl)
+    expect([true, 1, '1']).toContain(inserted.is_active);
+  });
+
+  it('defaults preferred_language from the business profile', async () => {
+    tableSeeds.customer_accounts = undefined;
+    await customerAccountsService.createDirect({
+      email: 'de@example.com',
+      prefill: {},
+      createdByAdminId: 1,
+    });
+    expect(insertResults.customer_accounts[0].preferred_language).toBe('de');
+  });
+
+  it('honours preferred_language when the admin pre-fills it', async () => {
+    tableSeeds.customer_accounts = undefined;
+    await customerAccountsService.createDirect({
+      email: 'fr@example.com',
+      prefill: { preferred_language: 'fr' },
+      createdByAdminId: 1,
+    });
+    expect(insertResults.customer_accounts[0].preferred_language).toBe('fr');
+  });
+
+  it('rejects when a customer with the email already exists', async () => {
+    tableSeeds.customer_accounts = { id: 7, email: 'dup@example.com', password_hash: 'whatever' };
+    await expect(customerAccountsService.createDirect({
+      email: 'dup@example.com',
+      prefill: {},
+      createdByAdminId: 1,
+    })).rejects.toThrow(/already exists/);
+  });
+
+  it('rejects when only an EMAIL is supplied without anything else (still valid)', async () => {
+    tableSeeds.customer_accounts = undefined;
+    await expect(customerAccountsService.createDirect({
+      email: '',
+      prefill: {},
+      createdByAdminId: 1,
+    })).rejects.toThrow(/Email is required/);
+  });
+
+  it('NEVER queues an invitation email (regression guard)', async () => {
+    tableSeeds.customer_accounts = undefined;
+    await customerAccountsService.createDirect({
+      email: 'silent@example.com',
+      prefill: {},
+      createdByAdminId: 1,
+    });
+    expect(mockQueueEmail).not.toHaveBeenCalled();
+  });
+});
+
+// --------------------------------------------------------------------
+// createInvitation passive-allowance behaviour
+// --------------------------------------------------------------------
+
+describe('createInvitation — duplicate-email guard', () => {
+  it('still rejects when the existing customer has a password (real duplicate)', async () => {
+    tableSeeds.customer_accounts = { id: 1, email: 'active@example.com', password_hash: 'hash' };
+    await expect(customerAccountsService.createInvitation({
+      email: 'active@example.com',
+      invitedById: 5,
+      prefill: null,
+    })).rejects.toThrow(/already exists/);
+    expect(mockQueueEmail).not.toHaveBeenCalled();
+  });
+
+  it('ALLOWS through when the existing customer is passive (promote path)', async () => {
+    tableSeeds.customer_accounts = { id: 7, email: 'passive@example.com', password_hash: null };
+    // no pending invitation
+    // The chain returns `tableSeeds.customer_invitations` for .first()
+    // and we haven't seeded one, so it's undefined → allowed through.
+    const out = await customerAccountsService.createInvitation({
+      email: 'passive@example.com',
+      invitedById: 9,
+      prefill: { first_name: 'Anna' },
+    });
+    expect(out.id).toBeDefined();
+    expect(out.token).toMatch(/^[0-9a-f]{64}$/);
+    expect(mockQueueEmail).toHaveBeenCalledTimes(1);
+  });
+});

backend/__tests__/services/customerHoursService.test.js

@@ -0,0 +1,182 @@
+/**
+ * Unit tests for the pure helpers in customerHoursService (migration
+ * 129). The CRUD paths themselves are exercised end-to-end via the
+ * admin/customers routes during manual QA; this file covers the
+ * deterministic logic so regressions in the rate / duration / lock
+ * resolution show up before they hit a real invoice.
+ */
+
+const path = require('path');
+const servicePath = path.join(__dirname, '..', '..', 'src', 'services', 'customerHoursService');
+
+// The service imports invoiceService which pulls in the DB. We don't
+// need either for the pure helpers — stub the DB layer so the
+// require chain doesn't try to connect to anything.
+jest.mock('../../src/database/db', () => ({
+  db: jest.fn(),
+  logActivity: jest.fn(),
+  withRetry: (fn) => fn(),
+}));
+jest.mock('../../src/services/invoiceService', () => ({}));
+
+const { _internal } = require(servicePath);
+const { computeDurationMinutes, resolveEffectiveRate, isEntryLocked, buildLineItemFromEntry } = _internal;
+
+describe('computeDurationMinutes', () => {
+  it('returns minute count for a basic window', () => {
+    expect(computeDurationMinutes('09:00', '11:30')).toBe(150);
+  });
+
+  it('handles single-minute precision', () => {
+    expect(computeDurationMinutes('09:30', '11:00')).toBe(90);
+    expect(computeDurationMinutes('14:15', '14:30')).toBe(15);
+  });
+
+  it('rejects malformed input', () => {
+    expect(() => computeDurationMinutes('9:00', '11:00')).toThrow(/Invalid start_time/);
+    expect(() => computeDurationMinutes('09:00', '25:00')).toThrow(/Invalid end_time/);
+  });
+
+  it('rejects zero or negative duration', () => {
+    expect(() => computeDurationMinutes('09:00', '09:00')).toThrow(/must be after/);
+    expect(() => computeDurationMinutes('11:00', '09:00')).toThrow(/must be after/);
+  });
+});
+
+describe('resolveEffectiveRate', () => {
+  it('prefers the per-entry override when set', () => {
+    expect(resolveEffectiveRate(
+      { hourly_rate_minor_override: 20000 },
+      { hourly_rate_minor: 15000 },
+    )).toBe(20000);
+  });
+
+  it('falls back to the customer default when no override', () => {
+    expect(resolveEffectiveRate(
+      { hourly_rate_minor_override: null },
+      { hourly_rate_minor: 15000 },
+    )).toBe(15000);
+  });
+
+  it('throws when override, customer rate, AND install default are all unset', () => {
+    expect(() => resolveEffectiveRate(
+      { hourly_rate_minor_override: null },
+      { hourly_rate_minor: null },
+      null,
+    )).toThrow(/No hourly rate/);
+  });
+
+  it('falls back to the install-wide default when override + customer rate are unset', () => {
+    expect(resolveEffectiveRate(
+      { hourly_rate_minor_override: null },
+      { hourly_rate_minor: null },
+      12000,
+    )).toBe(12000);
+  });
+
+  it('customer rate wins over the install-wide default', () => {
+    expect(resolveEffectiveRate(
+      { hourly_rate_minor_override: null },
+      { hourly_rate_minor: 15000 },
+      12000,
+    )).toBe(15000);
+  });
+
+  it('treats override=0 as "explicitly zero" (not null)', () => {
+    // Override === 0 is unusual but legal — pro bono blocks, internal
+    // tracking. Must NOT fall through to the customer default.
+    expect(resolveEffectiveRate(
+      { hourly_rate_minor_override: 0 },
+      { hourly_rate_minor: 15000 },
+    )).toBe(0);
+  });
+});
+
+describe('isEntryLocked', () => {
+  it('unbilled entry → not locked', () => {
+    expect(isEntryLocked({ invoice_id: null }, null)).toBe(false);
+  });
+
+  it('monthly draft → not locked (still accumulating)', () => {
+    expect(isEntryLocked(
+      { invoice_id: 42 },
+      { id: 42, is_monthly_draft: true, status: 'scheduled', scheduled_send_at: null },
+    )).toBe(false);
+  });
+
+  it('standalone draft with no send time → not locked', () => {
+    expect(isEntryLocked(
+      { invoice_id: 42 },
+      { id: 42, is_monthly_draft: false, status: 'scheduled', scheduled_send_at: null },
+    )).toBe(false);
+  });
+
+  it('future-scheduled draft → not locked', () => {
+    const future = new Date(Date.now() + 60 * 60 * 1000).toISOString();
+    expect(isEntryLocked(
+      { invoice_id: 42 },
+      { id: 42, is_monthly_draft: false, status: 'scheduled', scheduled_send_at: future },
+    )).toBe(false);
+  });
+
+  it('armed (scheduled_send_at in the past, status still scheduled) → locked', () => {
+    const past = new Date(Date.now() - 60 * 60 * 1000).toISOString();
+    expect(isEntryLocked(
+      { invoice_id: 42 },
+      { id: 42, is_monthly_draft: false, status: 'scheduled', scheduled_send_at: past },
+    )).toBe(true);
+  });
+
+  it('sent / paid / overdue / cancelled → locked', () => {
+    for (const status of ['sent', 'paid', 'overdue', 'cancelled']) {
+      expect(isEntryLocked(
+        { invoice_id: 42 },
+        { id: 42, is_monthly_draft: false, status, scheduled_send_at: null },
+      )).toBe(true);
+    }
+  });
+
+  it('entry references a deleted invoice (null) → treat as unbilled', () => {
+    expect(isEntryLocked({ invoice_id: 42 }, null)).toBe(false);
+  });
+});
+
+describe('buildLineItemFromEntry', () => {
+  const baseEntry = {
+    entry_date: '2026-05-20',
+    start_time: '09:00',
+    end_time: '11:30',
+    duration_minutes: 150,
+    description: 'Editing wedding photos',
+  };
+
+  it('formats the description per spec', () => {
+    const li = buildLineItemFromEntry(baseEntry, 15000);
+    expect(li.description).toBe('2026-05-20 09:00–11:30 (2.50h): Editing wedding photos');
+  });
+
+  it('omits the colon when no description', () => {
+    const li = buildLineItemFromEntry({ ...baseEntry, description: null }, 15000);
+    expect(li.description).toBe('2026-05-20 09:00–11:30 (2.50h)');
+  });
+
+  it('quantity is decimal hours with 2 places', () => {
+    const li = buildLineItemFromEntry(baseEntry, 15000);
+    expect(li.quantity).toBeCloseTo(2.5, 5);
+  });
+
+  it('line_total rounds correctly for non-clean durations', () => {
+    // 15 minutes at CHF 100/h = CHF 25.00 = 2500 minor
+    const li = buildLineItemFromEntry(
+      { ...baseEntry, start_time: '14:00', end_time: '14:15', duration_minutes: 15 },
+      10000,
+    );
+    expect(li.line_total_minor).toBe(2500);
+  });
+
+  it('zero-rate line items produce a zero total without exploding', () => {
+    const li = buildLineItemFromEntry(baseEntry, 0);
+    expect(li.line_total_minor).toBe(0);
+    expect(li.unit_price_minor).toBe(0);
+  });
+});

backend/__tests__/services/downloadFilenameService.test.js

@@ -0,0 +1,76 @@
+/**
+ * Pure-logic tests for the #493 download-filename helpers that don't depend
+ * on the DB (those are covered by the route integration suite).
+ */
+
+const {
+  pickRawDownloadName,
+  getZipEntryNames,
+} = require('../../src/services/downloadFilenameService');
+
+describe('pickRawDownloadName', () => {
+  it('returns the storage filename when the toggle is off', () => {
+    expect(
+      pickRawDownloadName({ id: 1, filename: 'slug_001.jpg', original_filename: 'DSC_1.jpg' }, false)
+    ).toBe('slug_001.jpg');
+  });
+
+  it('returns original_filename when the toggle is on', () => {
+    expect(
+      pickRawDownloadName({ id: 1, filename: 'slug_001.jpg', original_filename: 'DSC_1.jpg' }, true)
+    ).toBe('DSC_1.jpg');
+  });
+
+  it('falls back to storage filename when original_filename is missing', () => {
+    expect(
+      pickRawDownloadName({ id: 1, filename: 'slug_001.jpg', original_filename: null }, true)
+    ).toBe('slug_001.jpg');
+  });
+
+  it('produces a stable last-resort name when both are missing', () => {
+    expect(pickRawDownloadName({ id: 42 }, true)).toBe('photo-42.jpg');
+  });
+});
+
+describe('getZipEntryNames', () => {
+  it('uses original filenames with deterministic suffixes on collision', () => {
+    const photos = [
+      { id: 1, filename: 'slug_001.jpg', original_filename: 'DSC_1234.jpg' },
+      { id: 2, filename: 'slug_002.jpg', original_filename: 'DSC_1234.jpg' },
+      { id: 3, filename: 'slug_003.jpg', original_filename: 'DSC_1235.jpg' },
+    ];
+    expect(getZipEntryNames(photos, true)).toEqual([
+      'DSC_1234.jpg',
+      'DSC_1234_1.jpg',
+      'DSC_1235.jpg',
+    ]);
+  });
+
+  it('falls back to storage filename per-photo when original is missing', () => {
+    const photos = [
+      { id: 1, filename: 'slug_001.jpg', original_filename: 'DSC_1.jpg' },
+      { id: 2, filename: 'slug_002.jpg', original_filename: null },
+    ];
+    expect(getZipEntryNames(photos, true)).toEqual([
+      'DSC_1.jpg',
+      'slug_002.jpg',
+    ]);
+  });
+
+  it('returns storage filenames when the toggle is off, dedup still applies', () => {
+    const photos = [
+      { id: 1, filename: 'a.jpg', original_filename: 'DSC_1.jpg' },
+      { id: 2, filename: 'a.jpg', original_filename: 'DSC_2.jpg' },
+    ];
+    expect(getZipEntryNames(photos, false)).toEqual(['a.jpg', 'a_1.jpg']);
+  });
+
+  it('sanitizes path-traversal attempts that sneak into original_filename', () => {
+    const photos = [
+      { id: 1, filename: 'slug_001.jpg', original_filename: '../etc/passwd' },
+    ];
+    const [name] = getZipEntryNames(photos, true);
+    expect(name).not.toContain('..');
+    expect(name).not.toContain('/');
+  });
+});

backend/__tests__/services/eventService.calendar.test.js

@@ -0,0 +1,119 @@
+/**
+ * Unit tests for `normaliseEventTimeTriple` — the pure validator that
+ * gates the migration-137 calendar time columns on events.
+ *
+ * The DB-bound CRUD paths (createEvent/updateEvent) inline this
+ * helper and write through hasColumnCached guards; those are
+ * exercised in manual QA. This file pins the contract so a future
+ * tweak to the validation rules doesn't silently break it.
+ */
+
+const path = require('path');
+const servicePath = path.join(__dirname, '..', '..', 'src', 'services', 'eventService');
+
+// Stub every DB-bound peer so the require chain doesn't try to open
+// a knex connection. The helper under test is pure.
+jest.mock('../../src/database/db', () => ({ db: jest.fn() }));
+jest.mock('../../src/utils/schemaCache', () => ({ hasColumnCached: jest.fn() }));
+jest.mock('bcrypt', () => ({ hash: jest.fn() }));
+
+const { normaliseEventTimeTriple } = require(servicePath);
+
+describe('normaliseEventTimeTriple', () => {
+  it('defaults to full-day when is_full_day is undefined', () => {
+    expect(normaliseEventTimeTriple({})).toEqual({
+      event_time_start: null,
+      event_time_end: null,
+      is_full_day: true,
+    });
+  });
+
+  it('forces times to null when is_full_day is true even if times are supplied', () => {
+    expect(normaliseEventTimeTriple({
+      is_full_day: true,
+      event_time_start: '10:00',
+      event_time_end: '12:00',
+    })).toEqual({
+      event_time_start: null,
+      event_time_end: null,
+      is_full_day: true,
+    });
+  });
+
+  it('accepts a valid timed range when is_full_day is false', () => {
+    expect(normaliseEventTimeTriple({
+      is_full_day: false,
+      event_time_start: '09:30',
+      event_time_end: '17:00',
+    })).toEqual({
+      event_time_start: '09:30',
+      event_time_end: '17:00',
+      is_full_day: false,
+    });
+  });
+
+  it('throws when is_full_day is false and start is missing/malformed', () => {
+    expect(() => normaliseEventTimeTriple({
+      is_full_day: false,
+      event_time_end: '12:00',
+    })).toThrow(/HH:MM/);
+    expect(() => normaliseEventTimeTriple({
+      is_full_day: false,
+      event_time_start: '25:00',
+      event_time_end: '12:00',
+    })).toThrow(/HH:MM/);
+    expect(() => normaliseEventTimeTriple({
+      is_full_day: false,
+      event_time_start: '9:00',
+      event_time_end: '12:00',
+    })).toThrow(/HH:MM/);
+  });
+
+  it('throws when end is missing or malformed', () => {
+    expect(() => normaliseEventTimeTriple({
+      is_full_day: false,
+      event_time_start: '10:00',
+    })).toThrow(/HH:MM/);
+    expect(() => normaliseEventTimeTriple({
+      is_full_day: false,
+      event_time_start: '10:00',
+      event_time_end: '12:99',
+    })).toThrow(/HH:MM/);
+  });
+
+  it('throws when end is at or before start', () => {
+    expect(() => normaliseEventTimeTriple({
+      is_full_day: false,
+      event_time_start: '10:00',
+      event_time_end: '10:00',
+    })).toThrow(/after/);
+    expect(() => normaliseEventTimeTriple({
+      is_full_day: false,
+      event_time_start: '15:00',
+      event_time_end: '10:00',
+    })).toThrow(/after/);
+  });
+
+  it('parses string boolean flag', () => {
+    // `parseBooleanInput` accepts "true" / "false" / "1" / "0" — verify
+    // the helper consumes them transparently.
+    expect(normaliseEventTimeTriple({
+      is_full_day: 'false',
+      event_time_start: '08:00',
+      event_time_end: '09:00',
+    })).toEqual({
+      event_time_start: '08:00',
+      event_time_end: '09:00',
+      is_full_day: false,
+    });
+    expect(normaliseEventTimeTriple({
+      is_full_day: '1',
+      event_time_start: '08:00',
+      event_time_end: '09:00',
+    })).toEqual({
+      event_time_start: null,
+      event_time_end: null,
+      is_full_day: true,
+    });
+  });
+});

backend/__tests__/services/expenseService.markup.test.js

@@ -0,0 +1,160 @@
+/**
+ * Unit tests for the accounting money logic — re-bill markup (incoming
+ * invoices) and internal-expense amount/build. Pure functions via _internal.
+ */
+const expenseService = require('../../src/services/expenseService');
+
+const { computeMarkupMinor, resolveMarkup, computeExpenseAmount, buildExpenseInsert, buildInboundLineItem, isInvoiceMutable, resolveTaxTreatment } = expenseService._internal;
+
+describe('computeMarkupMinor', () => {
+  it('percent of base, rounded', () => {
+    expect(computeMarkupMinor(10000, { type: 'percent', percent: 10 })).toBe(1000);
+    expect(computeMarkupMinor(333, { type: 'percent', percent: 10 })).toBe(33);
+    expect(computeMarkupMinor(335, { type: 'percent', percent: 10 })).toBe(34);
+  });
+  it('flat / none', () => {
+    expect(computeMarkupMinor(10000, { type: 'flat', flatMinor: 500 })).toBe(500);
+    expect(computeMarkupMinor(10000, { type: 'none' })).toBe(0);
+    expect(computeMarkupMinor(10000, { type: 'percent', percent: null })).toBe(0);
+  });
+});
+
+describe('resolveMarkup precedence (no contract / no DB)', () => {
+  it('override > source clause', async () => {
+    await expect(resolveMarkup({ markupType: 'flat', markupFlatMinor: 999 }, { markupType: 'percent', markupPercent: 5 }, null, null))
+      .resolves.toEqual({ type: 'percent', percent: 5, flatMinor: null });
+  });
+  it("source clause when no override", async () => {
+    await expect(resolveMarkup({ markupType: 'flat', markupFlatMinor: 200 }, {}, null, null))
+      .resolves.toEqual({ type: 'flat', percent: null, flatMinor: 200 });
+  });
+  it('none when nothing set', async () => {
+    await expect(resolveMarkup({ markupType: 'none' }, {}, null, null))
+      .resolves.toEqual({ type: 'none', percent: null, flatMinor: null });
+  });
+});
+
+describe('computeExpenseAmount', () => {
+  it('mileage / per-diem = quantity x rate, rounded', () => {
+    expect(computeExpenseAmount('mileage', 42, 70, null)).toBe(2940); // 42 km x CHF 0.70
+    expect(computeExpenseAmount('per_diem', 3, 8000, null)).toBe(24000); // 3 days x CHF 80
+    expect(computeExpenseAmount('mileage', 10.5, 71, null)).toBe(746); // 745.5 -> 746
+  });
+  it('amount = the entered minor amount', () => {
+    expect(computeExpenseAmount('amount', null, null, 5000)).toBe(5000);
+  });
+  it('null when quantity or rate missing', () => {
+    expect(computeExpenseAmount('mileage', null, 70, null)).toBeNull();
+    expect(computeExpenseAmount('mileage', 42, null, null)).toBeNull();
+  });
+});
+
+describe('buildExpenseInsert (internal expense)', () => {
+  it('defaults: kind=amount, disposition=eigener_aufwand, tax=domestic, status=open', () => {
+    const row = buildExpenseInsert({ chfAmountMinor: 5000 }, 7);
+    expect(row.kind).toBe('amount');
+    expect(row.disposition).toBe('eigener_aufwand');
+    expect(row.tax_treatment).toBe('domestic');
+    expect(row.status).toBe('open');
+    expect(row.chf_amount_minor).toBe(5000);
+    expect(row.created_by_admin_id).toBe(7);
+    expect(row.inbound_document_id).toBeNull();
+  });
+
+  it('mileage uses the override rate, else the settings km rate', () => {
+    const withDefault = buildExpenseInsert({ kind: 'mileage', quantity: 42 }, 1, { kmRateMinor: 70 });
+    expect(withDefault.rate_minor).toBe(70);
+    expect(withDefault.chf_amount_minor).toBe(2940);
+
+    const withOverride = buildExpenseInsert({ kind: 'mileage', quantity: 42, rateMinor: 100 }, 1, { kmRateMinor: 70 });
+    expect(withOverride.rate_minor).toBe(100);
+    expect(withOverride.chf_amount_minor).toBe(4200);
+  });
+
+  it('per_diem uses days x per-diem rate', () => {
+    const row = buildExpenseInsert({ kind: 'per_diem', quantity: 2 }, 1, { perDiemRateMinor: 8000 });
+    expect(row.rate_minor).toBe(8000);
+    expect(row.chf_amount_minor).toBe(16000);
+  });
+
+  it('event_id null = booked to company; proof path carried', () => {
+    const company = buildExpenseInsert({ kind: 'amount', chfAmountMinor: 100 }, 1, { receiptPath: '/p/x.pdf' });
+    expect(company.event_id).toBeNull();
+    expect(company.receipt_path).toBe('/p/x.pdf');
+    const evt = buildExpenseInsert({ kind: 'amount', chfAmountMinor: 100, eventId: 9 }, 1);
+    expect(evt.event_id).toBe(9);
+  });
+});
+
+describe('buildInboundLineItem (re-bill line)', () => {
+  it('rebill: base + percent markup, Weiterverrechnung suffix', () => {
+    const li = buildInboundLineItem({ totalAmountMinor: 10000, supplierName: 'ACME' }, 'rebill', { type: 'percent', percent: 10 });
+    expect(li.unit_price_minor).toBe(11000);
+    expect(li.line_total_minor).toBe(11000);
+    expect(li.quantity).toBe(1);
+    expect(li.description).toBe('ACME (Weiterverrechnung)');
+  });
+
+  it('passthrough: distinct suffix, no markup passes through at cost', () => {
+    const li = buildInboundLineItem({ totalAmountMinor: 5000, supplierName: 'SBB' }, 'durchlaufend', { type: 'none' });
+    expect(li.unit_price_minor).toBe(5000);
+    expect(li.description).toBe('SBB (Durchlaufende Position)');
+  });
+
+  it('falls back to net amount + generic label when total/supplier missing', () => {
+    const li = buildInboundLineItem({ totalAmountMinor: null, netAmountMinor: 7000 }, 'rebill', { type: 'flat', flatMinor: 300 });
+    expect(li.unit_price_minor).toBe(7300);
+    expect(li.description).toBe('Weiterverrechnete Auslage (Weiterverrechnung)');
+  });
+
+  it('throws when there is no amount to re-bill', () => {
+    expect(() => buildInboundLineItem({ totalAmountMinor: null, netAmountMinor: null }, 'rebill', { type: 'none' }))
+      .toThrow(/no amount/i);
+  });
+});
+
+describe('resolveTaxTreatment (supplier-country auto-default)', () => {
+  const reclaim = ['CH', 'LI'];
+  it('explicit valid treatment always wins', () => {
+    expect(resolveTaxTreatment('reverse_charge_service', 'DE', reclaim)).toBe('reverse_charge_service');
+    expect(resolveTaxTreatment('import_goods', 'CH', reclaim)).toBe('import_goods');
+  });
+  it('country in the reclaim list → domestic', () => {
+    expect(resolveTaxTreatment(undefined, 'CH', reclaim)).toBe('domestic');
+    expect(resolveTaxTreatment(null, 'li', reclaim)).toBe('domestic'); // case-insensitive
+  });
+  it('country outside the reclaim list → foreign non-reclaimable', () => {
+    expect(resolveTaxTreatment(undefined, 'DE', reclaim)).toBe('foreign_vat_non_reclaimable');
+    expect(resolveTaxTreatment(undefined, 'US', reclaim)).toBe('foreign_vat_non_reclaimable');
+  });
+  it('unknown / empty country falls back to domestic', () => {
+    expect(resolveTaxTreatment(undefined, '', reclaim)).toBe('domestic');
+    expect(resolveTaxTreatment(undefined, null, reclaim)).toBe('domestic');
+  });
+  it('an UNCONFIGURED (empty) reclaim list never auto-classifies as foreign (PR #636 #1)', () => {
+    expect(resolveTaxTreatment(undefined, 'CH', [])).toBe('domestic');
+    expect(resolveTaxTreatment(undefined, 'DE', [])).toBe('domestic');
+    expect(resolveTaxTreatment(undefined, 'US', undefined)).toBe('domestic');
+  });
+  it('invalid explicit treatment is ignored (falls through to country logic)', () => {
+    expect(resolveTaxTreatment('bogus', 'DE', reclaim)).toBe('foreign_vat_non_reclaimable');
+  });
+});
+
+describe('isInvoiceMutable (re-categorise unwind guard)', () => {
+  const future = new Date(Date.now() + 86400000).toISOString();
+  const past = new Date(Date.now() - 86400000).toISOString();
+  it('monthly draft and not-yet-armed scheduled are mutable', () => {
+    expect(isInvoiceMutable(null)).toBe(true); // referenced invoice gone
+    expect(isInvoiceMutable({ is_monthly_draft: true })).toBe(true);
+    expect(isInvoiceMutable({ is_monthly_draft: 1 })).toBe(true);
+    expect(isInvoiceMutable({ status: 'scheduled', scheduled_send_at: null })).toBe(true);
+    expect(isInvoiceMutable({ status: 'scheduled', scheduled_send_at: future })).toBe(true);
+  });
+  it('armed / issued invoices are locked', () => {
+    expect(isInvoiceMutable({ status: 'scheduled', scheduled_send_at: past })).toBe(false);
+    expect(isInvoiceMutable({ status: 'sent' })).toBe(false);
+    expect(isInvoiceMutable({ status: 'paid' })).toBe(false);
+    expect(isInvoiceMutable({ status: 'cancelled' })).toBe(false);
+  });
+});

backend/__tests__/services/invoiceService.hierarchy.test.js

@@ -0,0 +1,122 @@
+/**
+ * Tests for the migration-119 hierarchy support in invoiceService —
+ * the shared helpers come from quoteService._internal (validated in
+ * quoteService.hierarchy.test.js), so we focus here on the
+ * invoice-specific seams:
+ *
+ *   - quote → invoice cloner preserves parent_position + details_text
+ *     across the conversion
+ *   - the cloner's installment "adjustment" line only reconciles
+ *     against TOP-LEVEL cloned items (sub-items don't contribute to
+ *     net so they can't appear in the sum)
+ *
+ * Pure helper, no DB.
+ */
+const quoteService = require('../../src/services/quoteService');
+
+const { validateLineItemHierarchy, insertLineItemsHierarchical } = quoteService._internal;
+
+describe('quote → invoice cloner shape', () => {
+  // Models the in-memory transformation step from `scheduleInvoicesForEvent`:
+  // take source quote line items (with parent_position) and produce the
+  // `cloned` array that's passed into insertLineItemsHierarchical.
+  function modelCloner(sourceLines) {
+    return sourceLines.map((li) => ({
+      position: parseInt(li.position, 10),
+      quantity: Number(li.quantity || 1),
+      description: li.description,
+      unit_price_minor: parseInt(li.unit_price_minor, 10) || 0,
+      discount_percent: Number(li.discount_percent || 0),
+      line_total_minor: parseInt(li.line_total_minor, 10) || 0,
+      parent_position: li.parent_position == null ? null : parseInt(li.parent_position, 10),
+      details_text: li.details_text || null,
+    }));
+  }
+
+  it('preserves parent_position so the hierarchy carries across conversion', () => {
+    const source = [
+      { position: 1, description: 'Package', quantity: 1, unit_price_minor: 50000, line_total_minor: 50000, parent_position: null },
+      { position: 2, description: 'Camera',  quantity: 1, unit_price_minor: 15000, line_total_minor: 15000, parent_position: 1 },
+      { position: 3, description: 'Lens',    quantity: 1, unit_price_minor: 20000, line_total_minor: 20000, parent_position: 1 },
+    ];
+    const cloned = modelCloner(source);
+    expect(cloned[0].parent_position).toBeNull();
+    expect(cloned[1].parent_position).toBe(1);
+    expect(cloned[2].parent_position).toBe(1);
+    // The cloned shape passes hierarchy validation — same positions
+    // means the same parent links work without any remap.
+    expect(() => validateLineItemHierarchy(cloned)).not.toThrow();
+  });
+
+  it('preserves details_text verbatim', () => {
+    const source = [
+      { position: 1, description: 'P', unit_price_minor: 0, line_total_minor: 0, parent_position: null,
+        details_text: 'Includes online gallery + 100 high-res downloads.' },
+    ];
+    const cloned = modelCloner(source);
+    expect(cloned[0].details_text).toBe('Includes online gallery + 100 high-res downloads.');
+  });
+
+  it('installment adjustment reconciles against TOP-LEVEL cloned items only', () => {
+    // Recreate the inner math from scheduleInvoicesForEvent: sum
+    // only line_total_minor where parent_position is null. Sub-items
+    // would otherwise double-count and skew the adjustment.
+    //
+    // Note: the cloner stores raw line_total_minor on each row from
+    // the source quote. By the time this sum runs, the parent's
+    // line_total_minor has already been resolved upstream (via
+    // computeTotals on the quote at save time) — so iterating
+    // top-level only sums the resolved parent totals + standalone
+    // top-level items. Sub-items never contribute here regardless of
+    // whether their parent's total was auto-resolved or not.
+    const cloned = modelCloner([
+      // Parent — resolved line_total assumed to be €450 (sum of priced sub-items below)
+      { position: 1, unit_price_minor: 0, line_total_minor: 45000, parent_position: null },
+      // Sub-items €150 + €200 + €100 — shown for transparency, must
+      // NOT enter the reconciliation sum.
+      { position: 2, unit_price_minor: 15000, line_total_minor: 15000, parent_position: 1 },
+      { position: 3, unit_price_minor: 20000, line_total_minor: 20000, parent_position: 1 },
+      { position: 4, unit_price_minor: 10000, line_total_minor: 10000, parent_position: 1 },
+      // Another top-level €100
+      { position: 5, unit_price_minor: 10000, line_total_minor: 10000, parent_position: null },
+    ]);
+    const clonedSum = cloned
+      .filter((x) => x.parent_position == null)
+      .reduce((s, x) => s + x.line_total_minor, 0);
+    // Top-level only: 45000 (resolved parent) + 10000 = 55000. NOT 100000.
+    expect(clonedSum).toBe(55000);
+  });
+});
+
+describe('insertLineItemsHierarchical for invoices', () => {
+  function makeTrxMock() {
+    let nextId = 200;
+    const inserts = [];
+    const trx = (tableName) => ({
+      insert(row) {
+        const id = nextId++;
+        inserts.push({ table: tableName, row: { ...row, id } });
+        return {
+          returning() { return Promise.resolve([{ id }]); },
+          then(resolve) { return Promise.resolve(undefined).then(resolve); },
+        };
+      },
+    });
+    return { trx, inserts };
+  }
+
+  it('handles invoice_line_items with the same two-phase + remap logic', async () => {
+    const { trx, inserts } = makeTrxMock();
+    await insertLineItemsHierarchical(trx, 'invoice_line_items', 'invoice_id', 7, [
+      { position: 1, description: 'Parent', quantity: 1, unit_price_minor: 50000, discount_percent: 0, line_total_minor: 50000, parent_position: null },
+      { position: 2, description: 'Sub A',  quantity: 1, unit_price_minor: 15000, discount_percent: 0, line_total_minor: 15000, parent_position: 1 },
+    ]);
+    expect(inserts).toHaveLength(2);
+    expect(inserts.every((i) => i.table === 'invoice_line_items')).toBe(true);
+    expect(inserts.every((i) => i.row.invoice_id === 7)).toBe(true);
+    // Parent inserted first, sub-item second with parent_line_item_id
+    // matching the parent's synthesised id.
+    expect(inserts[0].row.parent_line_item_id).toBeNull();
+    expect(inserts[1].row.parent_line_item_id).toBe(200);
+  });
+});

backend/__tests__/services/invoiceService.installmentPlan.test.js

@@ -0,0 +1,329 @@
+/**
+ * Tests for invoiceService.updateInstallmentPlan + validateInstallmentPlanInput.
+ *
+ * Validation tests run against the pure validator directly. Orchestration
+ * tests use the same deep-mocked db pattern as invoiceService.locks.test.js
+ * — chains are queued per table and assertions probe insert/update/delete
+ * call shapes rather than SQL.
+ */
+
+const chains = [];
+function makeChain() {
+  const c = {
+    _firstValue: undefined,
+    _updateResult: 1,
+    _insertResult: [{ id: 999 }],
+    _selectResult: [],
+    then: function (onResolve, onReject) {
+      return Promise.resolve(this._selectResult).then(onResolve, onReject);
+    },
+    where: jest.fn(function () { return this; }),
+    whereNot: jest.fn(function () { return this; }),
+    whereIn: jest.fn(function () { return this; }),
+    whereNull: jest.fn(function () { return this; }),
+    whereNotNull: jest.fn(function () { return this; }),
+    andWhere: jest.fn(function () { return this; }),
+    orderBy: jest.fn(function () { return this; }),
+    limit: jest.fn(function () { return this; }),
+    select: jest.fn(function () { return this; }),
+    sum: jest.fn(function () { return this; }),
+    count: jest.fn(function () { return this; }),
+    clone: jest.fn(function () { return this; }),
+    clearSelect: jest.fn(function () { return this; }),
+    clearOrder: jest.fn(function () { return this; }),
+    offset: jest.fn(function () { return this; }),
+    first: jest.fn(function () { return Promise.resolve(this._firstValue); }),
+    update: jest.fn(function () { return Promise.resolve(this._updateResult); }),
+    insert: jest.fn(function () { return this; }),
+    returning: jest.fn(function () { return Promise.resolve(this._insertResult); }),
+    del: jest.fn(function () { return Promise.resolve(1); }),
+    onConflict: jest.fn(function () { return this; }),
+    ignore: jest.fn(function () { return Promise.resolve(1); }),
+    merge: jest.fn(function () { return Promise.resolve(1); }),
+    increment: jest.fn(function () { return this; }),
+    forUpdate: jest.fn(function () { return this; }),
+    leftJoin: jest.fn(function () { return this; }),
+  };
+  chains.push(c);
+  return c;
+}
+
+const tableChains = {};
+function pickChainFor(name) {
+  if (!tableChains[name]) tableChains[name] = makeChain();
+  return tableChains[name];
+}
+
+const mockDbFn = jest.fn((name) => pickChainFor(name));
+mockDbFn.transaction = jest.fn(async (cb) => cb(mockDbFn));
+
+jest.mock('../../src/database/db', () => ({
+  db: mockDbFn,
+  withRetry: jest.fn(async (fn) => fn()),
+  logActivity: jest.fn(async () => {}),
+}));
+
+jest.mock('../../src/utils/appSettings', () => ({
+  getAppSetting: jest.fn(async () => null),
+}));
+
+jest.mock('../../src/services/businessProfileService', () => ({
+  getProfile: jest.fn(async () => ({ profile: { default_currency: 'CHF' } })),
+  resolveBankAccountForCurrency: jest.fn(async () => null),
+}));
+
+jest.mock('../../src/utils/documentSequences', () => {
+  const claimNextSequence = jest.fn(async () => 42);
+  // Delegates to the claimNextSequence mock so call-count assertions
+  // below keep observing sequence claims.
+  const nextDocumentNumber = jest.fn(async (kind, settingKey, defaultFormat, trx) => {
+    const seq = await claimNextSequence(kind, 2026, trx);
+    return `R-2026-${String(seq).padStart(4, '0')}`;
+  });
+  return { claimNextSequence, nextDocumentNumber };
+});
+
+jest.mock('../../src/services/pdfService', () => ({
+  renderInvoiceToBuffer: jest.fn(async () => Buffer.from('pdf')),
+  renderQuoteToBuffer: jest.fn(async () => Buffer.from('pdf')),
+}));
+
+jest.mock('../../src/services/emailProcessor', () => ({
+  queueEmail: jest.fn(async () => {}),
+}));
+
+jest.mock('../../src/utils/logger', () => ({
+  info: jest.fn(), warn: jest.fn(), error: jest.fn(),
+}));
+
+const invoiceService = require('../../src/services/invoiceService');
+
+function resetChains() {
+  for (const k of Object.keys(tableChains)) delete tableChains[k];
+}
+
+describe('validateInstallmentPlanInput', () => {
+  const { validateInstallmentPlanInput } = invoiceService;
+
+  it('throws on empty array', () => {
+    expect(() => validateInstallmentPlanInput([]))
+      .toThrow(/non-empty array/);
+  });
+
+  it('throws on non-array', () => {
+    expect(() => validateInstallmentPlanInput(null))
+      .toThrow(/non-empty array/);
+  });
+
+  it('throws on out-of-range percent', () => {
+    expect(() => validateInstallmentPlanInput([
+      { percent: 150, trigger: 'quote_accepted', offset_days: 0 },
+    ])).toThrow(/percent must be between 0 and 100/);
+    expect(() => validateInstallmentPlanInput([
+      { percent: -5, trigger: 'quote_accepted', offset_days: 0 },
+    ])).toThrow(/percent must be between 0 and 100/);
+  });
+
+  it('throws on unknown trigger', () => {
+    expect(() => validateInstallmentPlanInput([
+      { percent: 100, trigger: 'on_friday', offset_days: 0 },
+    ])).toThrow(/invalid trigger/);
+  });
+
+  it('throws when percents do not sum to 100', () => {
+    expect(() => validateInstallmentPlanInput([
+      { percent: 30, trigger: 'quote_accepted', offset_days: 0 },
+      { percent: 50, trigger: 'before_event', offset_days: -7 },
+    ])).toThrow(/must sum to 100/);
+  });
+
+  it('accepts a valid three-row plan with mixed triggers', () => {
+    expect(() => validateInstallmentPlanInput([
+      { percent: 30, trigger: 'quote_accepted', offset_days: 0, label: 'Anzahlung' },
+      { percent: 40, trigger: 'before_event', offset_days: -14, label: 'Zwischenrechnung' },
+      { percent: 30, trigger: 'after_delivery', offset_days: 0, label: 'Schlussrechnung' },
+    ])).not.toThrow();
+  });
+
+  it('tolerates 0.001 rounding drift in the sum', () => {
+    expect(() => validateInstallmentPlanInput([
+      { percent: 33.333, trigger: 'quote_accepted', offset_days: 0 },
+      { percent: 33.333, trigger: 'before_event', offset_days: -7 },
+      { percent: 33.334, trigger: 'after_event', offset_days: 0 },
+    ])).not.toThrow();
+  });
+});
+
+describe('updateInstallmentPlan — guards', () => {
+  beforeEach(() => resetChains());
+
+  const goodPlan = [
+    { percent: 50, trigger: 'quote_accepted', offset_days: 0, label: 'A' },
+    { percent: 50, trigger: 'before_event', offset_days: -14, label: 'B' },
+  ];
+
+  it('rejects when dealUuid is missing', async () => {
+    await expect(invoiceService.updateInstallmentPlan({
+      trx: mockDbFn, dealUuid: '', installments: goodPlan, adminId: 1,
+    })).rejects.toMatchObject({ statusCode: 400 });
+  });
+
+  it('404s when the deal has no invoices', async () => {
+    pickChainFor('invoices')._selectResult = [];
+    await expect(invoiceService.updateInstallmentPlan({
+      trx: mockDbFn, dealUuid: 'deal-1', installments: goodPlan, adminId: 1,
+    })).rejects.toMatchObject({ statusCode: 404 });
+  });
+
+  it('400s + NOT_INSTALLMENT_PLAN on a single-invoice deal', async () => {
+    pickChainFor('invoices')._selectResult = [
+      { id: 1, deal_uuid: 'deal-1', installment_total: 1, status: 'scheduled', kind: 'invoice' },
+    ];
+    await expect(invoiceService.updateInstallmentPlan({
+      trx: mockDbFn, dealUuid: 'deal-1', installments: goodPlan, adminId: 1,
+    })).rejects.toMatchObject({ statusCode: 400, code: 'NOT_INSTALLMENT_PLAN' });
+  });
+
+  it('409s + INVOICE_LOCKED when any sibling has already shipped', async () => {
+    pickChainFor('invoices')._selectResult = [
+      { id: 1, deal_uuid: 'deal-1', installment_total: 2, installment_index: 0,
+        status: 'sent', kind: 'invoice', invoice_number: 'R-2026-0001',
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770, shipping_amount_minor: 0 },
+      { id: 2, deal_uuid: 'deal-1', installment_total: 2, installment_index: 1,
+        status: 'scheduled', kind: 'invoice', invoice_number: 'R-2026-0002',
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770, shipping_amount_minor: 0 },
+    ];
+    await expect(invoiceService.updateInstallmentPlan({
+      trx: mockDbFn, dealUuid: 'deal-1', installments: goodPlan, adminId: 1,
+    })).rejects.toMatchObject({ statusCode: 409, code: 'INVOICE_LOCKED' });
+  });
+
+  it('409s + PLAN_HAS_STORNO when the deal contains a Storno', async () => {
+    pickChainFor('invoices')._selectResult = [
+      { id: 1, deal_uuid: 'deal-1', installment_total: 2, installment_index: 0,
+        status: 'scheduled', kind: 'storno', invoice_number: 'S-2026-0001',
+        net_amount_minor: -5000, vat_amount_minor: -385, total_amount_minor: -5385, shipping_amount_minor: 0 },
+      { id: 2, deal_uuid: 'deal-1', installment_total: 2, installment_index: 1,
+        status: 'scheduled', kind: 'invoice', invoice_number: 'R-2026-0002',
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770, shipping_amount_minor: 0 },
+    ];
+    await expect(invoiceService.updateInstallmentPlan({
+      trx: mockDbFn, dealUuid: 'deal-1', installments: goodPlan, adminId: 1,
+    })).rejects.toMatchObject({ statusCode: 409, code: 'PLAN_HAS_STORNO' });
+  });
+
+  it('rejects an invalid plan (percents not summing to 100) before opening the txn', async () => {
+    const badPlan = [
+      { percent: 30, trigger: 'quote_accepted', offset_days: 0 },
+      { percent: 30, trigger: 'before_event', offset_days: -7 },
+    ];
+    await expect(invoiceService.updateInstallmentPlan({
+      trx: mockDbFn, dealUuid: 'deal-1', installments: badPlan, adminId: 1,
+    })).rejects.toMatchObject({ statusCode: 400, code: 'PERCENT_SUM_INVALID' });
+  });
+});
+
+describe('updateInstallmentPlan — reshape (smoke)', () => {
+  beforeEach(() => resetChains());
+
+  const sibling = (overrides) => ({
+    id: 0, deal_uuid: 'deal-1', installment_total: 3, installment_index: 0,
+    status: 'scheduled', kind: 'invoice', invoice_number: 'R-2026-0001',
+    net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770,
+    shipping_amount_minor: 0, vat_rate: 7.7,
+    customer_account_id: 5, source_quote_id: null, event_id: null,
+    event_name: 'Wedding', event_date: '2026-08-15',
+    language: 'de', currency: 'CHF',
+    issue_date: '2026-05-25', due_date: '2026-06-24',
+    cc_pdf_email: null,
+    payment_net_days_template_id: null, payment_timing_template_id: null,
+    payment_term_snapshot: null,
+    ...overrides,
+  });
+
+  it('keeps invoice_numbers and does not claim new sequence on 3→3 reshape', async () => {
+    pickChainFor('invoices')._selectResult = [
+      sibling({ id: 1, installment_index: 0, invoice_number: 'R-2026-0001',
+        net_amount_minor: 3000, vat_amount_minor: 231, total_amount_minor: 3231 }),
+      sibling({ id: 2, installment_index: 1, invoice_number: 'R-2026-0002',
+        net_amount_minor: 3000, vat_amount_minor: 231, total_amount_minor: 3231 }),
+      sibling({ id: 3, installment_index: 2, invoice_number: 'R-2026-0003',
+        net_amount_minor: 4000, vat_amount_minor: 308, total_amount_minor: 4308 }),
+    ];
+    pickChainFor('customer_accounts')._firstValue = { id: 5, is_active: 1, feature_bills: 1 };
+    pickChainFor('invoice_line_items')._selectResult = [];
+
+    const result = await invoiceService.updateInstallmentPlan({
+      trx: mockDbFn, dealUuid: 'deal-1', adminId: 42,
+      installments: [
+        { percent: 20, trigger: 'quote_accepted', offset_days: 0, label: 'A' },
+        { percent: 30, trigger: 'before_event', offset_days: -14, label: 'B' },
+        { percent: 50, trigger: 'after_event', offset_days: 7, label: 'C' },
+      ],
+    });
+
+    expect(result.kept).toEqual([1, 2, 3]);
+    expect(result.created).toEqual([]);
+    expect(result.deleted).toEqual([]);
+    // Sequence helper never touched on a same-count reshape.
+    const { claimNextSequence } = require('../../src/utils/documentSequences');
+    expect(claimNextSequence).not.toHaveBeenCalled();
+  });
+
+  it('grows 2→3 by claiming one new invoice_number and keeping the first two', async () => {
+    pickChainFor('invoices')._selectResult = [
+      sibling({ id: 1, installment_index: 0, invoice_number: 'R-2026-0001',
+        net_amount_minor: 5000, vat_amount_minor: 385, total_amount_minor: 5385,
+        installment_total: 2 }),
+      sibling({ id: 2, installment_index: 1, invoice_number: 'R-2026-0002',
+        net_amount_minor: 5000, vat_amount_minor: 385, total_amount_minor: 5385,
+        installment_total: 2 }),
+    ];
+    pickChainFor('customer_accounts')._firstValue = { id: 5, is_active: 1, feature_bills: 1 };
+    pickChainFor('invoice_line_items')._selectResult = [];
+    pickChainFor('invoices')._insertResult = [{ id: 99 }];
+
+    const result = await invoiceService.updateInstallmentPlan({
+      trx: mockDbFn, dealUuid: 'deal-1', adminId: 42,
+      installments: [
+        { percent: 30, trigger: 'quote_accepted', offset_days: 0, label: 'A' },
+        { percent: 30, trigger: 'before_event', offset_days: -14, label: 'B' },
+        { percent: 40, trigger: 'after_event', offset_days: 7, label: 'C' },
+      ],
+    });
+
+    expect(result.kept).toEqual([1, 2]);
+    expect(result.created.length).toBe(1);
+    expect(result.deleted).toEqual([]);
+    const { claimNextSequence } = require('../../src/utils/documentSequences');
+    expect(claimNextSequence).toHaveBeenCalledTimes(1);
+  });
+
+  it('shrinks 3→2 by deleting the third row + its line items', async () => {
+    pickChainFor('invoices')._selectResult = [
+      sibling({ id: 1, installment_index: 0, invoice_number: 'R-2026-0001',
+        net_amount_minor: 3000, vat_amount_minor: 231, total_amount_minor: 3231 }),
+      sibling({ id: 2, installment_index: 1, invoice_number: 'R-2026-0002',
+        net_amount_minor: 3000, vat_amount_minor: 231, total_amount_minor: 3231 }),
+      sibling({ id: 3, installment_index: 2, invoice_number: 'R-2026-0003',
+        net_amount_minor: 4000, vat_amount_minor: 308, total_amount_minor: 4308 }),
+    ];
+    pickChainFor('customer_accounts')._firstValue = { id: 5, is_active: 1, feature_bills: 1 };
+    pickChainFor('invoice_line_items')._selectResult = [];
+
+    const result = await invoiceService.updateInstallmentPlan({
+      trx: mockDbFn, dealUuid: 'deal-1', adminId: 42,
+      installments: [
+        { percent: 40, trigger: 'quote_accepted', offset_days: 0, label: 'A' },
+        { percent: 60, trigger: 'after_event', offset_days: 7, label: 'B' },
+      ],
+    });
+
+    expect(result.kept).toEqual([1, 2]);
+    expect(result.created).toEqual([]);
+    expect(result.deleted).toEqual([3]);
+    // Line items + invoice rows deleted on the trimmed sibling.
+    expect(pickChainFor('invoice_line_items').del).toHaveBeenCalled();
+    expect(pickChainFor('invoices').del).toHaveBeenCalled();
+  });
+});

backend/__tests__/services/invoiceService.locks.test.js

@@ -0,0 +1,374 @@
+/**
+ * Tests for invoiceService lock + state-transition guards.
+ *
+ * Focuses on the rules that protect tax/audit integrity:
+ *   - reissueInvoice refuses to act on `scheduled` (use Edit)
+ *   - reissueInvoice cancels + clones any other status
+ *   - releaseForDelivery refuses to act on non-pending_delivery
+ *   - recordPaymentCheckAction refuses already-used / expired tokens
+ *
+ * db is deep-mocked so the tests are deterministic and fast.
+ */
+
+// Mock db chain: each table call returns a builder whose methods
+// chain (return `this`) until a terminal method (.first / .update /
+// .insert / .returning) resolves with the queued value.
+
+const chains = [];
+function makeChain() {
+  const c = {
+    _firstValue: undefined,
+    _updateResult: 1,
+    _insertResult: [{ id: 999 }],
+    _selectResult: [],
+    _allRows: [],
+    // knex chains are thenable — awaiting them runs the query and
+    // resolves with the row set. We mirror that so callers can
+    // `await trx('t').where(...).orderBy(...)` and get an array.
+    then: function (onResolve, onReject) {
+      return Promise.resolve(this._selectResult).then(onResolve, onReject);
+    },
+    where: jest.fn(function () { return this; }),
+    whereNot: jest.fn(function () { return this; }),
+    whereNotIn: jest.fn(function () { return this; }),
+    whereIn: jest.fn(function () { return this; }),
+    whereNull: jest.fn(function () { return this; }),
+    whereNotNull: jest.fn(function () { return this; }),
+    andWhere: jest.fn(function () { return this; }),
+    orderBy: jest.fn(function () { return this; }),
+    limit: jest.fn(function () { return this; }),
+    // select is both chainable (`.select('col').first()`) and awaitable
+    // via the chain's `then` (`await q.select(...)` returns `_selectResult`).
+    select: jest.fn(function () { return this; }),
+    sum: jest.fn(function () { return this; }),
+    count: jest.fn(function () { return this; }),
+    clone: jest.fn(function () { return this; }),
+    clearSelect: jest.fn(function () { return this; }),
+    clearOrder: jest.fn(function () { return this; }),
+    offset: jest.fn(function () { return this; }),
+    first: jest.fn(function () { return Promise.resolve(this._firstValue); }),
+    update: jest.fn(function () { return Promise.resolve(this._updateResult); }),
+    insert: jest.fn(function () { return this; }),
+    returning: jest.fn(function () { return Promise.resolve(this._insertResult); }),
+    del: jest.fn(function () { return Promise.resolve(1); }),
+    onConflict: jest.fn(function () { return this; }),
+    ignore: jest.fn(function () { return Promise.resolve(1); }),
+    merge: jest.fn(function () { return Promise.resolve(1); }),
+    increment: jest.fn(function () { return this; }),
+    forUpdate: jest.fn(function () { return this; }),
+    leftJoin: jest.fn(function () { return this; }),
+  };
+  chains.push(c);
+  return c;
+}
+
+const tableChains = {};
+function pickChainFor(name) {
+  if (!tableChains[name]) tableChains[name] = makeChain();
+  return tableChains[name];
+}
+
+const mockDbFn = jest.fn((name) => pickChainFor(name));
+// db.transaction(cb) runs the callback with a "trx" — for our
+// purposes the same chain factory works as trx.
+mockDbFn.transaction = jest.fn(async (cb) => cb(mockDbFn));
+
+jest.mock('../../src/database/db', () => ({
+  db: mockDbFn,
+  withRetry: jest.fn(async (fn) => fn()),
+  logActivity: jest.fn(async () => {}),
+}));
+
+jest.mock('../../src/utils/appSettings', () => ({
+  getAppSetting: jest.fn(async () => null),
+}));
+
+jest.mock('../../src/services/businessProfileService', () => ({
+  getProfile: jest.fn(async () => ({ profile: { default_currency: 'CHF' } })),
+  resolveBankAccountForCurrency: jest.fn(async () => null),
+}));
+
+jest.mock('../../src/services/pdfService', () => ({
+  renderInvoiceToBuffer: jest.fn(async () => Buffer.from('pdf')),
+  renderQuoteToBuffer: jest.fn(async () => Buffer.from('pdf')),
+}));
+
+jest.mock('../../src/services/emailProcessor', () => ({
+  queueEmail: jest.fn(async () => {}),
+}));
+
+jest.mock('../../src/utils/logger', () => ({
+  info: jest.fn(), warn: jest.fn(), error: jest.fn(),
+}));
+
+const invoiceService = require('../../src/services/invoiceService');
+
+function resetChains() {
+  for (const k of Object.keys(tableChains)) delete tableChains[k];
+}
+
+describe('invoiceService.reissueInvoice', () => {
+  beforeEach(() => resetChains());
+
+  it('throws USE_EDIT_INSTEAD when the source is still scheduled', async () => {
+    pickChainFor('invoices')._firstValue = { id: 1, status: 'scheduled' };
+    await expect(invoiceService.reissueInvoice(1, 42))
+      .rejects.toMatchObject({ statusCode: 409, code: 'USE_EDIT_INSTEAD' });
+  });
+
+  it('throws when the source invoice does not exist', async () => {
+    pickChainFor('invoices')._firstValue = null;
+    await expect(invoiceService.reissueInvoice(999, 42))
+      .rejects.toMatchObject({ statusCode: 404 });
+  });
+
+  it('cancels the original and creates a new row when status is sent', async () => {
+    pickChainFor('invoices')._firstValue = {
+      id: 1, status: 'sent', customer_account_id: 5,
+      currency: 'CHF', language: 'de', vat_rate: 7.7,
+      shipping_amount_minor: 0, cc_pdf_email: null,
+      business_bank_account_id: null, qr_format: null,
+      payment_term_template_id: null, event_id: null,
+      source_quote_id: null,
+    };
+    pickChainFor('customer_accounts')._firstValue = {
+      id: 5, is_active: 1, feature_bills: 1,
+    };
+    pickChainFor('invoice_line_items')._selectResult = [];
+    pickChainFor('app_settings')._firstValue = null;
+    // document_sequences row used by claimNextSequence.
+    pickChainFor('document_sequences')._firstValue = { current_value: 42 };
+
+    const result = await invoiceService.reissueInvoice(1, 42);
+    expect(result.id).toBeDefined();
+    expect(result.replaces).toBe(1);
+  });
+});
+
+describe('invoiceService.createStorno', () => {
+  beforeEach(() => resetChains());
+
+  it('rejects when the source invoice does not exist (404)', async () => {
+    pickChainFor('invoices')._firstValue = null;
+    await expect(invoiceService.createStorno(999, 42))
+      .rejects.toMatchObject({ statusCode: 404 });
+  });
+
+  it('rejects when the source is still scheduled (drafts edit in place)', async () => {
+    pickChainFor('invoices')._firstValue = { id: 1, status: 'scheduled', kind: 'invoice' };
+    await expect(invoiceService.createStorno(1, 42))
+      .rejects.toMatchObject({ statusCode: 409, code: 'USE_EDIT_INSTEAD' });
+  });
+
+  it('rejects when the source is already cancelled (no double-Storno)', async () => {
+    pickChainFor('invoices')._firstValue = { id: 1, status: 'cancelled', kind: 'invoice' };
+    await expect(invoiceService.createStorno(1, 42))
+      .rejects.toMatchObject({ statusCode: 409, code: 'ALREADY_CANCELLED' });
+  });
+
+  it('rejects when asked to Storno a Storno', async () => {
+    pickChainFor('invoices')._firstValue = { id: 1, status: 'sent', kind: 'storno' };
+    await expect(invoiceService.createStorno(1, 42))
+      .rejects.toMatchObject({ statusCode: 409, code: 'IS_STORNO' });
+  });
+
+  it('inserts a Storno row and flips the original on a sent invoice', async () => {
+    // Original is `sent`, no line items, no event.
+    const invoicesChain = pickChainFor('invoices');
+    invoicesChain._firstValue = {
+      id: 1, status: 'sent', kind: 'invoice', customer_account_id: 5,
+      currency: 'CHF', language: 'de', vat_rate: 7.7,
+      net_amount_minor: 30000, vat_amount_minor: 2310,
+      total_amount_minor: 32310, shipping_amount_minor: 0,
+      cc_pdf_email: null, event_id: null,
+    };
+    pickChainFor('invoice_line_items')._selectResult = [];
+    pickChainFor('app_settings')._firstValue = null;
+    // document_sequences row used by claimNextSequence.
+    pickChainFor('document_sequences')._firstValue = { current_value: 42 };
+
+    const stornoId = await invoiceService.createStorno(1, 42);
+    expect(stornoId).toBeDefined();
+
+    // The mock chain's .update() is called twice on `invoices`:
+    //   1) `.insert(...).returning('id')` for the Storno row
+    //   2) `.update({status:'cancelled', cancellation_storno_id})` on the original
+    // We just verify the helpers were exercised on the right table.
+    expect(invoicesChain.insert).toHaveBeenCalled();
+    expect(invoicesChain.update).toHaveBeenCalled();
+    // The Storno insert payload should carry kind='storno' and
+    // negated row-level totals. Inspect the first insert call's
+    // payload to confirm.
+    const insertedRow = invoicesChain.insert.mock.calls[0][0];
+    expect(insertedRow.kind).toBe('storno');
+    expect(insertedRow.net_amount_minor).toBe(-30000);
+    expect(insertedRow.vat_amount_minor).toBe(-2310);
+    expect(insertedRow.total_amount_minor).toBe(-32310);
+    expect(insertedRow.cancels_invoice_id).toBe(1);
+    expect(insertedRow.status).toBe('scheduled');
+    // No payment instrument on a Storno.
+    expect(insertedRow.business_bank_account_id).toBeNull();
+    expect(insertedRow.qr_format).toBeNull();
+    expect(insertedRow.payment_term_template_id).toBeNull();
+    // Storni have no real payment due, but the schema's NOT NULL
+    // constraint on due_date forces a value — we mirror issue_date.
+    expect(insertedRow.due_date).toBe(insertedRow.issue_date);
+  });
+});
+
+describe('invoiceService.cancelInvoice', () => {
+  beforeEach(() => resetChains());
+
+  it('rejects when the invoice does not exist (404)', async () => {
+    pickChainFor('invoices')._firstValue = null;
+    await expect(invoiceService.cancelInvoice(999, 42))
+      .rejects.toMatchObject({ statusCode: 404 });
+  });
+
+  it('rejects with ALREADY_CANCELLED when status is cancelled', async () => {
+    pickChainFor('invoices')._firstValue = { id: 1, status: 'cancelled', kind: 'invoice' };
+    await expect(invoiceService.cancelInvoice(1, 42))
+      .rejects.toMatchObject({ statusCode: 409, code: 'ALREADY_CANCELLED' });
+  });
+
+  it('rejects with IS_STORNO when asked to cancel a Storno', async () => {
+    pickChainFor('invoices')._firstValue = { id: 1, status: 'sent', kind: 'storno' };
+    await expect(invoiceService.cancelInvoice(1, 42))
+      .rejects.toMatchObject({ statusCode: 409, code: 'IS_STORNO' });
+  });
+
+  it('soft-cancels a scheduled (draft) invoice without generating a Storno', async () => {
+    pickChainFor('invoices')._firstValue = { id: 1, status: 'scheduled', kind: 'invoice', event_id: null };
+    const result = await invoiceService.cancelInvoice(1, 42);
+    expect(result).toEqual({ cancelled: true, stornoId: null });
+  });
+});
+
+describe('invoiceService.releaseForDelivery', () => {
+  beforeEach(() => resetChains());
+
+  it('refuses when status is not pending_delivery', async () => {
+    pickChainFor('invoices')._firstValue = { id: 1, status: 'sent' };
+    await expect(invoiceService.releaseForDelivery(1, 42))
+      .rejects.toMatchObject({ statusCode: 409, code: 'NOT_PENDING_DELIVERY' });
+  });
+
+  it('404s when the invoice does not exist', async () => {
+    pickChainFor('invoices')._firstValue = null;
+    await expect(invoiceService.releaseForDelivery(999, 42))
+      .rejects.toMatchObject({ statusCode: 404 });
+  });
+});
+
+describe('invoiceService.recordPaymentCheckAction', () => {
+  beforeEach(() => resetChains());
+
+  it('rejects invalid actions', async () => {
+    await expect(invoiceService.recordPaymentCheckAction({
+      token: 'abc', action: 'foo',
+    })).rejects.toMatchObject({ statusCode: 400 });
+  });
+
+  it('404s when the token is not on file', async () => {
+    pickChainFor('invoice_payment_check_tokens')._firstValue = null;
+    await expect(invoiceService.recordPaymentCheckAction({
+      token: 'a'.repeat(64), action: 'unpaid',
+    })).rejects.toMatchObject({ statusCode: 404 });
+  });
+
+  it('410s + TOKEN_ALREADY_USED when the row has used_at set', async () => {
+    pickChainFor('invoice_payment_check_tokens')._firstValue = {
+      id: 1, used_at: new Date(),
+      expires_at: new Date(Date.now() + 86400000),
+    };
+    await expect(invoiceService.recordPaymentCheckAction({
+      token: 'a'.repeat(64), action: 'unpaid',
+    })).rejects.toMatchObject({ statusCode: 410, code: 'TOKEN_ALREADY_USED' });
+  });
+
+  it('410s + TOKEN_EXPIRED when the row is past expires_at', async () => {
+    pickChainFor('invoice_payment_check_tokens')._firstValue = {
+      id: 1, used_at: null,
+      expires_at: new Date(Date.now() - 86400000),
+    };
+    await expect(invoiceService.recordPaymentCheckAction({
+      token: 'a'.repeat(64), action: 'unpaid',
+    })).rejects.toMatchObject({ statusCode: 410, code: 'TOKEN_EXPIRED' });
+  });
+
+  it('rejects partial with amount <= 0', async () => {
+    pickChainFor('invoice_payment_check_tokens')._firstValue = {
+      id: 1, used_at: null,
+      expires_at: new Date(Date.now() + 86400000),
+    };
+    pickChainFor('invoices')._firstValue = {
+      id: 5, total_amount_minor: 10000, paid_amount_minor: 0, late_fee_amount_minor: 0,
+    };
+    await expect(invoiceService.recordPaymentCheckAction({
+      token: 'a'.repeat(64), action: 'partial', amountMinor: 0,
+    })).rejects.toMatchObject({ statusCode: 400 });
+  });
+
+  it('rejects partial with amount > outstanding', async () => {
+    pickChainFor('invoice_payment_check_tokens')._firstValue = {
+      id: 1, used_at: null,
+      expires_at: new Date(Date.now() + 86400000),
+    };
+    pickChainFor('invoices')._firstValue = {
+      id: 5, total_amount_minor: 5000, paid_amount_minor: 0, late_fee_amount_minor: 0,
+    };
+    await expect(invoiceService.recordPaymentCheckAction({
+      token: 'a'.repeat(64), action: 'partial', amountMinor: 9999,
+    })).rejects.toMatchObject({ statusCode: 400 });
+  });
+});
+
+describe('invoiceService.queuePaymentCheckEmail', () => {
+  beforeEach(() => resetChains());
+
+  it('skips when invoice does not exist', async () => {
+    pickChainFor('invoices')._firstValue = null;
+    const res = await invoiceService.queuePaymentCheckEmail(1);
+    expect(res).toEqual({ sent: false, reason: 'not_found' });
+  });
+
+  it('skips when status is not sent/overdue', async () => {
+    pickChainFor('invoices')._firstValue = {
+      id: 1, status: 'paid',
+    };
+    const res = await invoiceService.queuePaymentCheckEmail(1);
+    expect(res.sent).toBe(false);
+    expect(res.reason).toMatch(/wrong_status_paid/);
+  });
+
+  it('respects the 24h throttle', async () => {
+    pickChainFor('invoices')._firstValue = {
+      id: 1, status: 'overdue',
+      last_payment_check_at: new Date(Date.now() - 3600 * 1000),
+    };
+    const res = await invoiceService.queuePaymentCheckEmail(1);
+    expect(res).toEqual({ sent: false, reason: 'throttled_24h' });
+  });
+
+  it('bypasses the throttle when skipThrottle=true', async () => {
+    pickChainFor('invoices')._firstValue = {
+      id: 1, status: 'overdue',
+      customer_account_id: 5,
+      created_by_admin_id: 42,
+      total_amount_minor: 10000,
+      currency: 'CHF',
+      language: 'de',
+      reminder_level: 0,
+      due_date: '2026-05-01',
+      last_payment_check_at: new Date(Date.now() - 3600 * 1000),
+      event_id: null,
+    };
+    pickChainFor('admin_users')._firstValue = { id: 42, email: 'admin@example.com', username: 'admin' };
+    pickChainFor('business_profile')._firstValue = null;
+    pickChainFor('customer_accounts')._firstValue = { id: 5, email: 'c@example.com', display_name: 'Test' };
+
+    const res = await invoiceService.queuePaymentCheckEmail(1, { skipThrottle: true });
+    expect(res.sent).toBe(true);
+    expect(res.token).toMatch(/^[a-f0-9]{64}$/);
+  });
+});

backend/__tests__/services/invoiceService.smoke.test.js

@@ -0,0 +1,259 @@
+/**
+ * Smoke tests for invoiceService's primary flows ahead of the god-file
+ * decomposition — createInvoice happy path (incl. the line-item
+ * totals/VAT math), list/get reads, and the status-transition guards
+ * on cancelInvoice / releaseForDelivery.
+ *
+ * Uses the same deep-mocked db pattern as
+ * invoiceService.installmentPlan.test.js — chains are queued per table
+ * and assertions probe insert/update call shapes rather than SQL.
+ */
+
+const chains = [];
+function makeChain() {
+  const c = {
+    _firstValue: undefined,
+    _updateResult: 1,
+    _insertResult: [{ id: 999 }],
+    _selectResult: [],
+    then: function (onResolve, onReject) {
+      return Promise.resolve(this._selectResult).then(onResolve, onReject);
+    },
+    where: jest.fn(function () { return this; }),
+    whereNot: jest.fn(function () { return this; }),
+    whereIn: jest.fn(function () { return this; }),
+    whereNull: jest.fn(function () { return this; }),
+    whereNotNull: jest.fn(function () { return this; }),
+    andWhere: jest.fn(function () { return this; }),
+    orderBy: jest.fn(function () { return this; }),
+    limit: jest.fn(function () { return this; }),
+    select: jest.fn(function () { return this; }),
+    sum: jest.fn(function () { return this; }),
+    count: jest.fn(function () { return this; }),
+    clone: jest.fn(function () { return this; }),
+    clearSelect: jest.fn(function () { return this; }),
+    clearOrder: jest.fn(function () { return this; }),
+    offset: jest.fn(function () { return this; }),
+    first: jest.fn(function () { return Promise.resolve(this._firstValue); }),
+    update: jest.fn(function () { return Promise.resolve(this._updateResult); }),
+    insert: jest.fn(function () { return this; }),
+    returning: jest.fn(function () { return Promise.resolve(this._insertResult); }),
+    del: jest.fn(function () { return Promise.resolve(1); }),
+    onConflict: jest.fn(function () { return this; }),
+    ignore: jest.fn(function () { return Promise.resolve(1); }),
+    merge: jest.fn(function () { return Promise.resolve(1); }),
+    increment: jest.fn(function () { return this; }),
+    forUpdate: jest.fn(function () { return this; }),
+    leftJoin: jest.fn(function () { return this; }),
+  };
+  chains.push(c);
+  return c;
+}
+
+const tableChains = {};
+function pickChainFor(name) {
+  if (!tableChains[name]) tableChains[name] = makeChain();
+  return tableChains[name];
+}
+
+const mockDbFn = jest.fn((name) => pickChainFor(name));
+mockDbFn.transaction = jest.fn(async (cb) => cb(mockDbFn));
+mockDbFn.schema = { hasTable: jest.fn(async () => false) };
+
+jest.mock('../../src/database/db', () => ({
+  db: mockDbFn,
+  withRetry: jest.fn(async (fn) => fn()),
+  logActivity: jest.fn(async () => {}),
+}));
+
+jest.mock('../../src/utils/appSettings', () => ({
+  getAppSetting: jest.fn(async () => null),
+}));
+
+jest.mock('../../src/services/businessProfileService', () => ({
+  getProfile: jest.fn(async () => ({ profile: { default_currency: 'CHF' } })),
+  resolveBankAccountForCurrency: jest.fn(async () => null),
+}));
+
+jest.mock('../../src/utils/documentSequences', () => {
+  const claimNextSequence = jest.fn(async () => 42);
+  // Delegates to the claimNextSequence mock so call-count assertions
+  // below keep observing sequence claims.
+  const nextDocumentNumber = jest.fn(async (kind, settingKey, defaultFormat, trx) => {
+    const seq = await claimNextSequence(kind, 2026, trx);
+    return `R-2026-${String(seq).padStart(4, '0')}`;
+  });
+  return { claimNextSequence, nextDocumentNumber };
+});
+
+jest.mock('../../src/services/pdfService', () => ({
+  renderInvoiceToBuffer: jest.fn(async () => Buffer.from('pdf')),
+  renderQuoteToBuffer: jest.fn(async () => Buffer.from('pdf')),
+}));
+
+jest.mock('../../src/services/emailProcessor', () => ({
+  queueEmail: jest.fn(async () => {}),
+}));
+
+jest.mock('../../src/utils/logger', () => ({
+  info: jest.fn(), warn: jest.fn(), error: jest.fn(),
+}));
+
+const invoiceService = require('../../src/services/invoiceService');
+
+function resetChains() {
+  for (const k of Object.keys(tableChains)) delete tableChains[k];
+  jest.clearAllMocks();
+}
+
+const activeCustomer = {
+  id: 5, is_active: 1, feature_bills: 1,
+  billing_cadence: 'per_event', preferred_language: 'de',
+};
+
+describe('createInvoice — happy path + totals', () => {
+  beforeEach(() => resetChains());
+
+  it('creates a single invoice with a claimed sequence number and computed totals/VAT', async () => {
+    pickChainFor('customer_accounts')._firstValue = { ...activeCustomer };
+    pickChainFor('invoices')._insertResult = [{ id: 777 }];
+
+    const result = await invoiceService.createInvoice({
+      customerAccountId: 5,
+      vatRate: 8.1,
+      lineItems: [
+        // 2 × 100.00 = 200.00
+        { position: 1, description: 'Shoot', quantity: 2, unit_price_minor: 10000 },
+        // 50.00 with 10% discount = 45.00
+        { position: 2, description: 'Discounted extra', quantity: 1, unit_price_minor: 5000, discount_percent: 10 },
+        // Parent header — total auto-resolves from priced sub-items (350.00)
+        { position: 3, description: 'Package', quantity: 1, unit_price_minor: 0 },
+        { position: 4, description: 'Camera', quantity: 1, unit_price_minor: 15000, parent_position: 3 },
+        { position: 5, description: 'Lens', quantity: 1, unit_price_minor: 20000, parent_position: 3 },
+      ],
+    }, 1);
+
+    expect(result.invoiceIds).toEqual([777]);
+
+    // Net = 20000 + 4500 + 35000 (resolved parent) — sub-items must NOT
+    // double-count. VAT = round(59500 × 8.1%) = 4820.
+    expect(pickChainFor('invoices').insert).toHaveBeenCalledWith(expect.objectContaining({
+      invoice_number: 'R-2026-0042',
+      customer_account_id: 5,
+      currency: 'CHF',
+      status: 'scheduled',
+      net_amount_minor: 59500,
+      vat_rate: 8.1,
+      vat_amount_minor: 4820,
+      shipping_amount_minor: 0,
+      total_amount_minor: 64320,
+      installment_total: 1,
+    }));
+    // Exactly one sequence number claimed for a single-row create.
+    const { claimNextSequence } = require('../../src/utils/documentSequences');
+    expect(claimNextSequence).toHaveBeenCalledTimes(1);
+    // Line items landed in invoice_line_items.
+    expect(pickChainFor('invoice_line_items').insert).toHaveBeenCalled();
+  });
+
+  it('409s on a deactivated customer before touching the sequence', async () => {
+    pickChainFor('customer_accounts')._firstValue = { ...activeCustomer, is_active: 0 };
+    await expect(invoiceService.createInvoice({
+      customerAccountId: 5, vatRate: 0, lineItems: [],
+    }, 1)).rejects.toMatchObject({ statusCode: 409 });
+    const { claimNextSequence } = require('../../src/utils/documentSequences');
+    expect(claimNextSequence).not.toHaveBeenCalled();
+  });
+
+  it('400s + INVOICE_TOTAL_NEGATIVE when discounts push the total below zero', async () => {
+    pickChainFor('customer_accounts')._firstValue = { ...activeCustomer };
+    await expect(invoiceService.createInvoice({
+      customerAccountId: 5,
+      vatRate: 7.7,
+      lineItems: [
+        { position: 1, description: 'Shoot', quantity: 1, unit_price_minor: 5000 },
+        { position: 2, description: 'Rabatt', quantity: 1, unit_price_minor: -8000 },
+      ],
+    }, 1)).rejects.toMatchObject({ statusCode: 400, code: 'INVOICE_TOTAL_NEGATIVE' });
+    const { claimNextSequence } = require('../../src/utils/documentSequences');
+    expect(claimNextSequence).not.toHaveBeenCalled();
+  });
+});
+
+describe('listInvoices / getInvoiceById — read paths (smoke)', () => {
+  beforeEach(() => resetChains());
+
+  it('lists invoices with total + pagination echo', async () => {
+    pickChainFor('invoices')._selectResult = [
+      { id: 1, invoice_number: 'R-2026-0001' },
+      { id: 2, invoice_number: 'R-2026-0002' },
+    ];
+    pickChainFor('invoices')._firstValue = { total: 7 };
+
+    const result = await invoiceService.listInvoices({ page: 2, pageSize: 10 });
+
+    expect(result.rows).toHaveLength(2);
+    expect(result.total).toBe(7);
+    expect(result.page).toBe(2);
+    expect(result.pageSize).toBe(10);
+    expect(pickChainFor('invoices').offset).toHaveBeenCalledWith(10);
+    expect(pickChainFor('invoices').limit).toHaveBeenCalledWith(10);
+  });
+
+  it('getInvoiceById returns { invoice, lineItems, payments } when found', async () => {
+    pickChainFor('invoices')._firstValue = { id: 3, invoice_number: 'R-2026-0003' };
+    pickChainFor('invoice_line_items as li')._selectResult = [
+      { id: 30, position: 1, description: 'Shoot' },
+    ];
+    pickChainFor('invoice_payment_log')._selectResult = [];
+
+    const result = await invoiceService.getInvoiceById(3);
+    expect(result.invoice).toMatchObject({ id: 3, invoice_number: 'R-2026-0003' });
+    expect(result.lineItems).toHaveLength(1);
+    expect(result.payments).toEqual([]);
+  });
+
+  it('getInvoiceById returns null for an unknown id', async () => {
+    pickChainFor('invoices')._firstValue = undefined;
+    await expect(invoiceService.getInvoiceById(404)).resolves.toBeNull();
+  });
+});
+
+describe('status transitions — cancelInvoice / releaseForDelivery guards', () => {
+  beforeEach(() => resetChains());
+
+  it('soft-cancels a scheduled (never-issued) invoice without a Storno', async () => {
+    pickChainFor('invoices')._firstValue = {
+      id: 9, status: 'scheduled', kind: 'invoice', event_id: null,
+    };
+    const result = await invoiceService.cancelInvoice(9, 1);
+    expect(result).toEqual({ cancelled: true, stornoId: null });
+    expect(pickChainFor('invoices').update).toHaveBeenCalledWith(
+      expect.objectContaining({ status: 'cancelled' })
+    );
+  });
+
+  it('409s + ALREADY_CANCELLED on a second cancel', async () => {
+    pickChainFor('invoices')._firstValue = {
+      id: 9, status: 'cancelled', kind: 'invoice',
+    };
+    await expect(invoiceService.cancelInvoice(9, 1))
+      .rejects.toMatchObject({ statusCode: 409, code: 'ALREADY_CANCELLED' });
+  });
+
+  it('409s + IS_STORNO when trying to cancel a Storno document', async () => {
+    pickChainFor('invoices')._firstValue = {
+      id: 10, status: 'sent', kind: 'storno',
+    };
+    await expect(invoiceService.cancelInvoice(10, 1))
+      .rejects.toMatchObject({ statusCode: 409, code: 'IS_STORNO' });
+  });
+
+  it('releaseForDelivery 409s + NOT_PENDING_DELIVERY on a non-pending invoice', async () => {
+    pickChainFor('invoices')._firstValue = {
+      id: 11, status: 'sent', kind: 'invoice',
+    };
+    await expect(invoiceService.releaseForDelivery(11, 1))
+      .rejects.toMatchObject({ statusCode: 409, code: 'NOT_PENDING_DELIVERY' });
+  });
+});

backend/__tests__/services/ledgerService.test.js

@@ -0,0 +1,249 @@
+/**
+ * Tests for ledgerService (Accounting Layer A).
+ *
+ * Two layers:
+ *   1. Pure helpers (rateKey, csvEscape, minorToDecimal).
+ *   2. buildPostings + exportPostings — db chain + appSettings mocked so we can
+ *      feed canned invoices/inbound/expenses and assert the Buchungssätze +
+ *      the per-tool CSV shapes.
+ */
+
+// ----- canned data per table ------------------------------------------
+let accountsRows = [];
+let vatRows = [];
+let invoiceRows = [];
+let inboundRows = [];
+let expenseRows = [];
+
+function makeChain(rows) {
+  const c = {
+    _rows: rows,
+    then(onR, onJ) { return Promise.resolve(this._rows).then(onR, onJ); },
+    leftJoin() { return this; },
+    where() { return this; },
+    whereNot() { return this; },
+    whereIn() { return this; },
+    whereNotIn() { return this; },
+    whereBetween() { return this; },
+    whereRaw() { return this; },
+    orderBy() { return this; },
+    orderByRaw() { return this; },
+    modify(cb) { if (typeof cb === 'function') cb(this); return this; },
+    select() { return Promise.resolve(this._rows); },
+    first() { return Promise.resolve(this._rows[0]); },
+  };
+  return c;
+}
+
+const mockDbFn = jest.fn((table) => {
+  switch (table) {
+    case 'ledger_accounts': return makeChain(accountsRows);
+    case 'vat_codes': return makeChain(vatRows);
+    case 'invoices': return makeChain(invoiceRows);
+    case 'inbound_documents': return makeChain(inboundRows);
+    case 'expenses': return makeChain(expenseRows);
+    default: return makeChain([]);
+  }
+});
+mockDbFn.raw = (s) => s;
+mockDbFn.schema = {
+  hasTable: jest.fn(async () => true),
+  hasColumn: jest.fn(async () => true),
+};
+
+jest.mock('../../src/database/db', () => ({ db: mockDbFn, withRetry: async (fn) => fn() }));
+
+const SETTINGS = {
+  ledger_account_debitoren: '1100',
+  ledger_account_kreditoren: '2000',
+  ledger_account_default_revenue: '3400',
+  ledger_account_default_expense: '6700',
+  ledger_account_mileage: '6200',
+  ledger_account_per_diem: '6640',
+  ledger_account_rebilled_revenue: '3940',
+  ledger_vat_map: { domestic: 'VST81', reverse_charge_service: 'BZ', foreign_vat_non_reclaimable: 'VST00', import_goods: 'VST81' },
+  ledger_output_vat_map: { '8.1': 'UN81', '2.6': 'UN26', '3.8': 'UN38', '0': 'UN00' },
+};
+jest.mock('../../src/utils/appSettings', () => ({
+  getAppSetting: jest.fn(async (key, def) => (key in SETTINGS ? SETTINGS[key] : def)),
+}));
+
+const ledgerService = require('../../src/services/ledgerService');
+const { rateKey, csvEscape, minorToDecimal } = ledgerService._internal;
+
+beforeEach(() => {
+  accountsRows = [
+    { id: 1, number: '1100', name: 'Debitoren', type: 'asset' },
+    { id: 2, number: '3400', name: 'Dienstleistungsertrag', type: 'revenue' },
+    { id: 3, number: '2000', name: 'Kreditoren', type: 'liability' },
+    { id: 4, number: '6570', name: 'Informatikaufwand', type: 'expense' },
+    { id: 5, number: '6200', name: 'Fahrzeugaufwand', type: 'expense' },
+    { id: 6, number: '6700', name: 'Sonstiger Betriebsaufwand', type: 'expense' },
+  ];
+  vatRows = [{ id: 9, code: 'UN81', rate: 8.1, direction: 'output', account_id: null }];
+  invoiceRows = [];
+  inboundRows = [];
+  expenseRows = [];
+});
+
+// ----- pure helpers ----------------------------------------------------
+describe('rateKey', () => {
+  it('normalises rate to the output-map key', () => {
+    expect(rateKey(8.1)).toBe('8.1');
+    expect(rateKey(8.10)).toBe('8.1');
+    expect(rateKey('2.60')).toBe('2.6');
+    expect(rateKey(0)).toBe('0');
+    expect(rateKey(null)).toBe('0');
+  });
+});
+
+describe('csvEscape / minorToDecimal', () => {
+  it('quotes + doubles inner quotes', () => {
+    expect(csvEscape('a,b')).toBe('"a,b"');
+    expect(csvEscape('he said "hi"')).toBe('"he said ""hi"""');
+    expect(csvEscape(null)).toBe('""');
+  });
+  it('renders minor units as 2dp', () => {
+    expect(minorToDecimal(10810)).toBe('108.10');
+    expect(minorToDecimal(0)).toBe('0.00');
+    expect(minorToDecimal(null)).toBe('0.00');
+  });
+});
+
+// ----- buildPostings ---------------------------------------------------
+describe('buildPostings', () => {
+  const period = { from: '2026-01-01', to: '2026-03-31', currency: 'CHF' };
+
+  it('books a revenue invoice as Dr Debitoren / Cr Ertrag with the output VAT code', async () => {
+    invoiceRows = [{
+      id: 1, invoice_number: 'R-2026-0001', issue_date: '2026-01-10', vat_rate: 8.1,
+      net_amount_minor: 10000, vat_amount_minor: 810, total_amount_minor: 10810,
+      customer_company_name: 'ACME GmbH', event_name: 'Wedding A',
+    }];
+    const { postings } = await ledgerService.buildPostings(period);
+    expect(postings).toHaveLength(1);
+    expect(postings[0]).toMatchObject({
+      debitAccount: '1100', debitName: 'Debitoren',
+      creditAccount: '3400', creditName: 'Dienstleistungsertrag',
+      grossMinor: 10810, netMinor: 10000, vatMinor: 810,
+      vatCode: 'UN81', source: 'revenue', eventName: 'Wedding A',
+    });
+  });
+
+  it('books an incoming invoice as Dr Aufwand(category) / Cr Kreditoren with the input VAT code', async () => {
+    inboundRows = [{
+      id: 5, invoice_number: 'L-77', invoice_date: '2026-01-12', created_at: '2026-01-13 09:00:00',
+      supplier_name: 'Lab AG', tax_treatment: 'domestic',
+      net_amount_minor: 2000, vat_amount_minor: 162, total_amount_minor: 2162,
+      event_id: 7, cat_account_id: 4, event_name: 'Wedding A',
+    }];
+    const { postings } = await ledgerService.buildPostings(period);
+    expect(postings).toHaveLength(1);
+    expect(postings[0]).toMatchObject({
+      debitAccount: '6570', creditAccount: '2000',
+      grossMinor: 2162, netMinor: 2000, vatMinor: 162,
+      vatCode: 'VST81', source: 'incoming', eventName: 'Wedding A',
+    });
+  });
+
+  it('falls back to the kind default account for a category-less mileage expense', async () => {
+    expenseRows = [{
+      id: 9, created_at: '2026-02-01 12:00:00', kind: 'mileage', supplier_name: null, description: 'Drive',
+      tax_treatment: 'foreign_vat_non_reclaimable', event_id: null,
+      original_amount_minor: null, chf_amount_minor: 5000,
+      net_amount_minor: null, vat_amount_minor: null, gross_amount_minor: null, cat_account_id: null,
+    }];
+    const { postings } = await ledgerService.buildPostings(period);
+    expect(postings).toHaveLength(1);
+    expect(postings[0]).toMatchObject({
+      debitAccount: '6200', creditAccount: '2000',
+      grossMinor: 5000, vatMinor: 0,
+      vatCode: 'VST00', source: 'expense', eventName: '',
+    });
+  });
+
+  it('sorts the combined journal chronologically across all sources', async () => {
+    invoiceRows = [{ id: 1, invoice_number: 'R1', issue_date: '2026-02-20', vat_rate: 8.1, net_amount_minor: 100, vat_amount_minor: 8, total_amount_minor: 108, customer_company_name: 'A' }];
+    inboundRows = [{ id: 5, invoice_number: 'L1', invoice_date: '2026-01-05', created_at: '2026-01-05', supplier_name: 'Lab', tax_treatment: 'domestic', net_amount_minor: 50, vat_amount_minor: 4, total_amount_minor: 54, event_id: null, cat_account_id: null }];
+    expenseRows = [{ id: 9, created_at: '2026-01-30', kind: 'amount', description: 'x', tax_treatment: 'domestic', event_id: null, chf_amount_minor: 200, net_amount_minor: null, vat_amount_minor: null, gross_amount_minor: null, cat_account_id: null }];
+    const { postings } = await ledgerService.buildPostings(period);
+    expect(postings.map((p) => p.source)).toEqual(['incoming', 'expense', 'revenue']);
+  });
+
+  it('requires from/to/currency', async () => {
+    await expect(ledgerService.buildPostings({})).rejects.toThrow(/from.+to/);
+    await expect(ledgerService.buildPostings({ from: '2026-01-01', to: '2026-03-31' })).rejects.toThrow(/currency/);
+  });
+});
+
+// ----- exportPostings --------------------------------------------------
+describe('exportPostings', () => {
+  const period = { from: '2026-01-01', to: '2026-03-31', currency: 'CHF' };
+  beforeEach(() => {
+    invoiceRows = [{ id: 1, invoice_number: 'R-2026-0001', issue_date: '2026-01-10', vat_rate: 8.1, net_amount_minor: 10000, vat_amount_minor: 810, total_amount_minor: 10810, customer_company_name: 'ACME' }];
+  });
+
+  it('generic format carries all human-friendly columns', async () => {
+    const { content, filename, count } = await ledgerService.exportPostings({ ...period, format: 'generic' });
+    const [header, row] = content.trim().split('\r\n');
+    expect(count).toBe(1);
+    expect(header).toContain('DebitAccountName');
+    expect(header).toContain('NetAmount');
+    expect(header).toContain('VatCode');
+    expect(row).toContain('1100');
+    expect(row).toContain('108.10'); // gross 2dp
+    expect(filename).toMatch(/_generic\.csv$/);
+  });
+
+  it('banana format is a TAB-separated .txt with Banana column names', async () => {
+    const { content, filename, contentType } = await ledgerService.exportPostings({ ...period, format: 'banana' });
+    const header = content.split('\r\n')[0];
+    // Banana's "Text file with column headers" import wants TAB-separated,
+    // unquoted values in a .txt — not a comma CSV.
+    expect(header).toBe('Date\tDoc\tDescription\tAccountDebit\tAccountCredit\tAmount\tVatCode');
+    expect(content.split('\r\n')[1]).toContain('\t');
+    expect(content).not.toContain('"');
+    expect(filename).toMatch(/_banana\.txt$/);
+    expect(contentType).toMatch(/text\/plain/);
+  });
+
+  it('banana_ie format is Income & Expense columns, tab-separated .txt', async () => {
+    const { content, filename, contentType } = await ledgerService.exportPostings({ ...period, format: 'banana_ie' });
+    const [header, row] = content.trim().split('\r\n');
+    expect(header).toBe('Date\tDoc\tDescription\tIncome\tExpenses\tCategory\tVatCode');
+    // The mock period holds one revenue posting (gross 108.10) → Income filled,
+    // Expenses empty, Category = the revenue account.
+    const cells = row.split('\t');
+    expect(cells[3]).toBe('108.10'); // Income
+    expect(cells[4]).toBe('');       // Expenses
+    expect(cells[5]).not.toBe('');   // Category (revenue account)
+    expect(filename).toMatch(/_banana_ie\.txt$/);
+    expect(contentType).toMatch(/text\/plain/);
+  });
+
+  it('formats a Postgres Date object as yyyy-mm-dd (not "Thu Jan ...")', async () => {
+    // PG returns DATE columns as JS Date objects (SQLite returns strings); the
+    // export must still emit an ISO date, or Banana rejects it and the Date
+    // column imports empty.
+    invoiceRows = [{
+      id: 1, invoice_number: 'R-2026-0001', issue_date: new Date(2026, 0, 10),
+      vat_rate: 8.1, net_amount_minor: 10000, vat_amount_minor: 810, total_amount_minor: 10810,
+      customer_company_name: 'ACME',
+    }];
+    const { content } = await ledgerService.exportPostings({ ...period, format: 'banana' });
+    const dateCell = content.split('\r\n')[1].split('\t')[0];
+    expect(dateCell).toBe('2026-01-10');
+  });
+
+  it('bexio format includes tax_code + currency', async () => {
+    const { content } = await ledgerService.exportPostings({ ...period, format: 'bexio' });
+    const header = content.split('\r\n')[0];
+    expect(header).toContain('tax_code');
+    expect(header).toContain('currency');
+  });
+
+  it('unknown format falls back to generic', async () => {
+    const { filename } = await ledgerService.exportPostings({ ...period, format: 'nope' });
+    expect(filename).toMatch(/_generic\.csv$/);
+  });
+});

backend/__tests__/services/pdfService.baseDocument.test.js

@@ -0,0 +1,236 @@
+/**
+ * Tests for the createBaseDocument + getPageMetrics helpers — the
+ * shared PDF factory used by quote/invoice rendering AND by the
+ * upcoming tax-report renderer. These verify orientation handling
+ * and font defaults without touching DB or filesystem.
+ */
+const pdfService = require('../../src/services/pdfService');
+
+describe('getPageMetrics', () => {
+  it('returns portrait A4 metrics by default', () => {
+    const p = pdfService.getPageMetrics();
+    expect(p.width).toBeCloseTo(595.28, 1);
+    expect(p.height).toBeCloseTo(841.89, 1);
+    expect(p.contentWidth).toBeCloseTo(515.28, 1);
+  });
+
+  it('returns portrait when orientation is "portrait"', () => {
+    const p = pdfService.getPageMetrics('portrait');
+    expect(p.width).toBeLessThan(p.height);
+  });
+
+  it('returns landscape A4 metrics (width > height) when orientation is "landscape"', () => {
+    const p = pdfService.getPageMetrics('landscape');
+    expect(p.width).toBeCloseTo(841.89, 1);
+    expect(p.height).toBeCloseTo(595.28, 1);
+    expect(p.contentWidth).toBeCloseTo(761.89, 1);
+    expect(p.width).toBeGreaterThan(p.height);
+  });
+
+  it('ignores unknown orientation values (falls back to portrait)', () => {
+    const p = pdfService.getPageMetrics('upside-down');
+    expect(p.width).toBeLessThan(p.height);
+  });
+});
+
+describe('createBaseDocument', () => {
+  it('returns a PDFKit doc, page metrics, and logical font names by default', () => {
+    const { doc, page, fonts } = pdfService.createBaseDocument();
+    expect(doc).toBeDefined();
+    expect(typeof doc.on).toBe('function');
+    expect(typeof doc.font).toBe('function');
+    expect(page.width).toBeCloseTo(595.28, 1); // portrait by default
+    expect(fonts).toEqual({ body: 'Helvetica', bold: 'Helvetica-Bold' });
+  });
+
+  it('produces a landscape document when orientation is "landscape"', () => {
+    const { doc, page } = pdfService.createBaseDocument({ orientation: 'landscape' });
+    expect(page.width).toBeGreaterThan(page.height);
+    // PDFKit stores the active page dims on doc.page.
+    expect(doc.page.width).toBeCloseTo(841.89, 1);
+    expect(doc.page.height).toBeCloseTo(595.28, 1);
+  });
+
+  it('produces a buffered PDF of non-zero size with the PDF magic header', async () => {
+    const { doc } = pdfService.createBaseDocument({ orientation: 'landscape' });
+    const chunks = [];
+    doc.on('data', (c) => chunks.push(c));
+    const ended = new Promise((resolve) => doc.on('end', resolve));
+    doc.text('hello', 40, 40);
+    doc.end();
+    await ended;
+    const buf = Buffer.concat(chunks);
+    expect(buf.length).toBeGreaterThan(0);
+    expect(buf.slice(0, 4).toString('ascii')).toBe('%PDF');
+  });
+
+  it('keeps Helvetica fonts when the issuer has no custom TTF path', () => {
+    const { fonts } = pdfService.createBaseDocument({
+      issuer: { pdfFontTtfPath: null },
+    });
+    expect(fonts.body).toBe('Helvetica');
+    expect(fonts.bold).toBe('Helvetica-Bold');
+  });
+
+  it('falls back to Helvetica when the custom TTF path does not exist', () => {
+    // No exception, no logger.error blow-up — just silent fallback.
+    const { fonts } = pdfService.createBaseDocument({
+      issuer: { pdfFontTtfPath: '/nonexistent/path/font.ttf' },
+    });
+    expect(fonts.body).toBe('Helvetica');
+    expect(fonts.bold).toBe('Helvetica-Bold');
+  });
+
+  it('registers a bundled font family when pdfFontFamily is set', () => {
+    // Migration-121 dropdown path. Inter ships 400 + 600 + 700 under
+    // backend/assets/fonts/Inter/, so the resolver should pick 400
+    // for body and 700 for bold.
+    const { fonts } = pdfService.createBaseDocument({
+      issuer: { pdfFontFamily: 'Inter' },
+    });
+    expect(fonts.body).toBe('crm-body');
+    expect(fonts.bold).toBe('crm-bold');
+  });
+
+  it('falls back to Helvetica when pdfFontFamily names a non-existent directory', () => {
+    const { fonts } = pdfService.createBaseDocument({
+      issuer: { pdfFontFamily: 'NotARealFamily' },
+    });
+    expect(fonts.body).toBe('Helvetica');
+    expect(fonts.bold).toBe('Helvetica-Bold');
+  });
+
+  it('strips path-traversal characters from pdfFontFamily', () => {
+    // Defence in depth: the sanitiser keeps only [A-Za-z0-9_-].
+    // "../../etc/passwd" becomes "etcpasswd" → no such font dir → fallback.
+    const { fonts } = pdfService.createBaseDocument({
+      issuer: { pdfFontFamily: '../../etc/passwd' },
+    });
+    expect(fonts.body).toBe('Helvetica');
+    expect(fonts.bold).toBe('Helvetica-Bold');
+  });
+
+  it('prefers pdfFontTtfPath over pdfFontFamily when both are set', () => {
+    // The explicit upload is the priority-1 override. When the upload
+    // path is unusable (file missing) the family is consulted next.
+    // Here we set BOTH to invalid values and confirm Helvetica fallback
+    // — what matters is that the family DIDN'T get registered while a
+    // (failed) explicit path was being evaluated.
+    const { fonts } = pdfService.createBaseDocument({
+      issuer: {
+        pdfFontTtfPath: '/nonexistent/path/font.ttf',
+        pdfFontFamily: 'Inter',
+      },
+    });
+    // pdfFontTtfPath misses → falls through to pdfFontFamily → Inter
+    // registers successfully. crm-body / crm-bold confirm a custom
+    // font won.
+    expect(fonts.body).toBe('crm-body');
+    expect(fonts.bold).toBe('crm-bold');
+  });
+
+  it('forwards PDF info metadata (Title, Author) to the document', () => {
+    const { doc } = pdfService.createBaseDocument({
+      info: { Title: 'Tax Report 2026', Author: 'picpeak' },
+    });
+    // PDFKit copies these onto doc.info during construction.
+    expect(doc.info.Title).toBe('Tax Report 2026');
+    expect(doc.info.Author).toBe('picpeak');
+  });
+});
+
+describe('exported letterhead helper', () => {
+  it('exposes drawIssuerBlock for reuse by non-quote/invoice renderers', () => {
+    expect(typeof pdfService.drawIssuerBlock).toBe('function');
+  });
+});
+
+// Storno rendering — smoke-tests that exercise the kind='storno'
+// branch in renderInvoiceToBuffer. We can't search the PDF buffer
+// directly for German strings because PDFKit Flate-compresses
+// content streams, but we CAN verify the renderer:
+//   - completes without throwing on a Storno-shaped context,
+//   - produces a valid %PDF magic header,
+//   - produces a SMALLER document than its invoice counterpart
+//     (no payment block, no QR slip → fewer bytes), proving the
+//     suppression branches actually fire.
+//
+// Visual correctness (title swap, reference line, signed totals) is
+// validated by manual review of a real Storno PDF; the renderer's
+// branch logic is unit-tested in service tests where the inputs
+// can be asserted directly.
+describe('renderInvoiceToBuffer — Storno branch', () => {
+  function buildContext(overrides = {}) {
+    return {
+      locale: 'de',
+      currency: 'CHF',
+      issuer: { companyName: 'AcmeCo' },
+      recipient: {
+        companyName: 'KundenCo', addressLine1: 'Strasse 1',
+        city: 'Bern', postalCode: '3000',
+      },
+      lineItems: [{
+        quantity: 1, description: 'Photo session',
+        unitPriceMinor: 30000, lineTotalMinor: 30000,
+        parentLineItemId: null, parentPosition: null,
+      }],
+      totals: {
+        netAmountMinor: 30000, vatRate: 7.7, vatAmountMinor: 2310,
+        shippingAmountMinor: 0, totalAmountMinor: 32310,
+      },
+      doc: { invoiceNumber: 'R-2026-0042', issueDate: '2026-04-12' },
+      // Bank + payment term are part of the baseline invoice so the
+      // payment block renders a real IBAN + Zahlungsbedingungen
+      // section. The Storno branch suppresses this entirely, which
+      // produces a visible byte-size delta.
+      bank: {
+        accountHolder: 'AcmeCo',
+        iban: 'CH9300762011623852957',
+        bic: 'POFICHBE',
+        currency: 'CHF',
+      },
+      qrFormat: 'none',
+      paymentTerm: { netDays: 30, skontoPercent: 2, skontoWithinDays: 10 },
+      ...overrides,
+    };
+  }
+
+  it('renders a valid Storno PDF (kind="storno", negated totals)', async () => {
+    const buf = await pdfService.renderInvoiceToBuffer(buildContext({
+      totals: {
+        netAmountMinor: -30000, vatRate: 7.7, vatAmountMinor: -2310,
+        shippingAmountMinor: 0, totalAmountMinor: -32310,
+      },
+      doc: {
+        kind: 'storno',
+        invoiceNumber: 'R-2026-0080',
+        issueDate: '2026-05-15',
+        cancelsInvoice: { number: 'R-2026-0042', issueDate: '2026-04-12' },
+      },
+    }));
+    expect(buf.length).toBeGreaterThan(0);
+    expect(buf.slice(0, 4).toString('ascii')).toBe('%PDF');
+  });
+
+  it('produces a smaller PDF than the equivalent invoice (no payment block, no QR slip)', async () => {
+    // Baseline: normal invoice with a payment block.
+    const invoiceBuf = await pdfService.renderInvoiceToBuffer(buildContext());
+    // Storno: same context but kind='storno' → payment block + QR
+    // both suppressed. Payment block alone is ~80pt tall in the
+    // PDF; its absence is reliably detectable as a byte-size delta.
+    const stornoBuf = await pdfService.renderInvoiceToBuffer(buildContext({
+      totals: {
+        netAmountMinor: -30000, vatRate: 7.7, vatAmountMinor: -2310,
+        shippingAmountMinor: 0, totalAmountMinor: -32310,
+      },
+      doc: {
+        kind: 'storno',
+        invoiceNumber: 'R-2026-0080',
+        issueDate: '2026-05-15',
+        cancelsInvoice: { number: 'R-2026-0042', issueDate: '2026-04-12' },
+      },
+    }));
+    expect(stornoBuf.length).toBeGreaterThan(0);
+    expect(stornoBuf.length).toBeLessThan(invoiceBuf.length);
+  });
+});

backend/__tests__/services/pdfService.helpers.test.js

@@ -0,0 +1,95 @@
+/**
+ * Pure-function tests for the PDF rendering helpers. These are the
+ * functions that DON'T touch PDFKit / DB — formatting, salutation
+ * routing, EPC payload construction.
+ *
+ * The helpers aren't directly exported from pdfService.js (it
+ * exports renderQuoteToBuffer / renderInvoiceToBuffer); we reach
+ * them via `_internal` which the module already exposes for tests.
+ */
+const pdfService = require('../../src/services/pdfService');
+const { formatMinor, formatDate, t } = pdfService._internal;
+
+describe('formatMinor', () => {
+  it('formats CHF cents with 2 decimals (123456 minor = 1234.56 major)', () => {
+    // de-CH uses ’ (U+2019) as the thousands separator.
+    expect(formatMinor(123456, 'CHF', 'de-CH')).toMatch(/1[’',\u2019]?234\.56/);
+  });
+
+  it('formats large amounts with thousands separators', () => {
+    // 12345600 minor units = 123,456.00 major; the separator
+    // varies by locale (de-CH = U+2019, en-GB = ',').
+    expect(formatMinor(12345600, 'CHF', 'de-CH')).toMatch(/123[’',\u2019]456\.00/);
+  });
+
+  it('returns 0,00 for zero or null', () => {
+    expect(formatMinor(0, 'CHF', 'de-CH')).toMatch(/0[,.]00/);
+    expect(formatMinor(null, 'CHF', 'de-CH')).toMatch(/0[,.]00/);
+  });
+
+  it('returns 2-decimal output regardless of locale', () => {
+    expect(formatMinor(99, 'EUR', 'en-GB')).toMatch(/0[.,]99/);
+  });
+});
+
+describe('formatDate', () => {
+  // formatDate now respects ctx.dateFormat (object with `format`
+  // key) — when omitted defaults to DD.MM.YYYY.
+  it('defaults to DD.MM.YYYY when no format passed', () => {
+    expect(formatDate('2026-04-19')).toBe('19.04.2026');
+  });
+
+  it('honors the configured DD/MM/YYYY format', () => {
+    expect(formatDate('2026-04-19', { format: 'DD/MM/YYYY' })).toBe('19/04/2026');
+  });
+
+  it('honors the configured MM/DD/YYYY format', () => {
+    expect(formatDate('2026-04-19', { format: 'MM/DD/YYYY' })).toBe('04/19/2026');
+  });
+
+  it('honors ISO YYYY-MM-DD', () => {
+    expect(formatDate('2026-04-19', { format: 'YYYY-MM-DD' })).toBe('2026-04-19');
+  });
+
+  it('returns empty string on empty input', () => {
+    expect(formatDate('')).toBe('');
+    expect(formatDate(null)).toBe('');
+    expect(formatDate(undefined)).toBe('');
+  });
+
+  it('returns empty string on invalid input rather than throwing', () => {
+    expect(formatDate('not-a-date')).toBe('');
+  });
+
+  it('accepts Date objects', () => {
+    expect(formatDate(new Date('2026-04-19T12:00:00Z'))).toMatch(/^(19|20)\.0[34]\.2026$/);
+  });
+});
+
+describe('t (i18n lookup)', () => {
+  it('returns the EN value for an EN-only locale', () => {
+    expect(t('en', 'invoice_title')).toBe('Invoice');
+    expect(t('en', 'quote_title')).toBe('Quote');
+  });
+
+  it('returns the DE value for de locale', () => {
+    expect(t('de', 'invoice_title')).toBe('Rechnung');
+    expect(t('de', 'quote_title')).toBe('Angebot');
+  });
+
+  it('falls back to EN for unknown locales', () => {
+    expect(t('xx', 'invoice_title')).toBe('Invoice');
+  });
+
+  it('substitutes named tokens like {percent}', () => {
+    const out = t('en', 'skonto_phrase', { percent: 3, days: 5 });
+    expect(out).toMatch(/3% discount if paid within 5 working days\./);
+  });
+
+  it('falls back to EN when the key is missing on the requested locale', () => {
+    // page_of is seeded on all locales — pick something that
+    // exists on EN with a substitution.
+    const out = t('zz', 'page_of', { current: 1, total: 3 });
+    expect(out).toBe('Page 1 of 3');
+  });
+});

backend/__tests__/services/photoExportService.txt.test.js

@@ -0,0 +1,71 @@
+/**
+ * exportAsTxt — issue #623 regression test.
+ *
+ * The admin UI labels the TXT export "for Lightroom search". Lightroom's
+ * filename search wants ONE comma-separated line WITHOUT file extensions
+ * (the gallery JPEGs may map to RAW files in the catalog). The frontend
+ * now passes separator='comma' + include_extension=false for the TXT
+ * format; this test pins the resulting shape so a future refactor can't
+ * silently regress it back to the newline-separated form the bug reported.
+ *
+ * Also pins backward compatibility: a direct API caller passing no options
+ * still gets the original newline-with-extension behaviour, so existing
+ * integrations don't break.
+ */
+jest.mock('../../src/database/db', () => ({ db: jest.fn() }));
+jest.mock('../../src/services/xmpGenerator', () => ({ XmpGenerator: class {} }));
+
+const { PhotoExportService } = require('../../src/services/photoExportService');
+const service = new PhotoExportService();
+
+const PHOTOS = [
+  { original_filename: 'IMG_0001.jpg', filename: 'abc123.jpg' },
+  { original_filename: 'IMG_0002.JPEG', filename: 'def456.jpeg' },
+  { original_filename: 'shoot.final.tif', filename: 'ghi789.tif' },
+  { original_filename: null, filename: 'fallback.png' }, // null original → falls back to filename
+];
+
+describe('exportAsTxt (issue #623)', () => {
+  it('Lightroom mode: comma-joined, no extension, no space', () => {
+    const result = service.exportAsTxt(PHOTOS, {
+      separator: 'comma',
+      include_extension: false,
+    });
+    expect(result.content).toBe('IMG_0001,IMG_0002,shoot.final,fallback');
+    expect(result.contentType).toBe('text/plain');
+  });
+
+  it('backward compatible: no options → newline-joined with extensions', () => {
+    const result = service.exportAsTxt(PHOTOS);
+    expect(result.content).toBe(
+      'IMG_0001.jpg\nIMG_0002.JPEG\nshoot.final.tif\nfallback.png',
+    );
+  });
+
+  it('semicolon separator joins without a trailing space', () => {
+    const result = service.exportAsTxt(PHOTOS, {
+      separator: 'semicolon',
+      include_extension: false,
+    });
+    expect(result.content).toBe('IMG_0001;IMG_0002;shoot.final;fallback');
+  });
+
+  it('filename_format=picpeak uses photo.filename (hashed) instead of original', () => {
+    const result = service.exportAsTxt(PHOTOS, {
+      filename_format: 'picpeak',
+      separator: 'comma',
+      include_extension: false,
+    });
+    expect(result.content).toBe('abc123,def456,ghi789,fallback');
+  });
+
+  it('extension stripping uses only the last segment ("a.b.c" → "a.b")', () => {
+    // path.parse('shoot.final.tif').name === 'shoot.final' — Lightroom
+    // catalogs that store basenames like "shoot.final" still match.
+    const result = service.exportAsTxt(
+      [{ original_filename: 'shoot.final.tif', filename: 'x.tif' }],
+      { separator: 'comma', include_extension: false },
+    );
+    expect(result.content).toBe('shoot.final');
+  });
+});

backend/__tests__/services/quoteService.hierarchy.test.js

@@ -0,0 +1,217 @@
+/**
+ * Tests for the migration-119 hierarchy support in quoteService:
+ * computeTotals, validateLineItemHierarchy, and the two-phase
+ * insertLineItemsHierarchical helper. All pure / db-mocked so the
+ * suite runs fast and is deterministic.
+ */
+const quoteService = require('../../src/services/quoteService');
+const {
+  computeTotals,
+  validateLineItemHierarchy,
+  insertLineItemsHierarchical,
+} = quoteService._internal;
+
+describe('computeTotals — hierarchy + parent auto-resolve rule', () => {
+  it('parent total auto-resolves to sum of priced sub-items (parent unit_price ignored)', () => {
+    const items = [
+      // Parent with its own price €500 — should be IGNORED because
+      // sub-items have prices. Parent's effective line_total becomes
+      // sum of priced sub-items.
+      { position: 1, quantity: 1, unit_price_minor: 50000, discount_percent: 0 },
+      // Priced sub-items €150 + €200 = €350
+      { position: 2, quantity: 1, unit_price_minor: 15000, discount_percent: 0, parent_position: 1 },
+      { position: 3, quantity: 1, unit_price_minor: 20000, discount_percent: 0, parent_position: 1 },
+      // Another top-level item: €100
+      { position: 4, quantity: 2, unit_price_minor: 5000, discount_percent: 0 },
+    ];
+    const out = computeTotals(items, 0, 0);
+    // Net = 35000 (parent 1, auto-resolved) + 10000 (row 4) = 45000.
+    // Parent's own €500 is silently overridden.
+    expect(out.netAmountMinor).toBe(45000);
+    // Parent's stored line_total_minor reflects the resolved sum.
+    expect(out.lineItems[0].line_total_minor).toBe(35000);
+  });
+
+  it('priceless sub-items leave the parent\'s own line_total intact', () => {
+    const items = [
+      // Parent €500 with three priceless transparency-bullets — the
+      // €500 stands.
+      { position: 1, quantity: 1, unit_price_minor: 50000, discount_percent: 0 },
+      { position: 2, quantity: 1, unit_price_minor: 0, discount_percent: 0, parent_position: 1 },
+      { position: 3, quantity: 1, unit_price_minor: 0, discount_percent: 0, parent_position: 1 },
+    ];
+    const out = computeTotals(items, 0, 0);
+    expect(out.netAmountMinor).toBe(50000);
+    expect(out.lineItems[0].line_total_minor).toBe(50000);
+  });
+
+  it('mixed priced + priceless sub-items: only priced contribute, parent\'s own price still overridden', () => {
+    const items = [
+      // Parent €500 → overridden because at least one sub-item is priced.
+      { position: 1, quantity: 1, unit_price_minor: 50000, discount_percent: 0 },
+      { position: 2, quantity: 1, unit_price_minor: 15000, discount_percent: 0, parent_position: 1 },
+      // Priceless bullet — doesn't add anything
+      { position: 3, quantity: 1, unit_price_minor: 0, discount_percent: 0, parent_position: 1 },
+    ];
+    const out = computeTotals(items, 0, 0);
+    // Parent resolves to €150 (only priced sub-item).
+    expect(out.netAmountMinor).toBe(15000);
+    expect(out.lineItems[0].line_total_minor).toBe(15000);
+  });
+
+  it('still computes line_total_minor on sub-items so the renderer can show it', () => {
+    const out = computeTotals([
+      { position: 1, quantity: 1, unit_price_minor: 50000, discount_percent: 0 },
+      { position: 2, quantity: 2, unit_price_minor: 15000, discount_percent: 10, parent_position: 1 },
+    ], 0);
+    expect(out.lineItems[1].line_total_minor).toBe(27000); // 2 × 150.00 × 0.9 = 270.00
+  });
+
+  it('applies VAT to the resolved parent total', () => {
+    const out = computeTotals([
+      // Parent €1000 overridden by priced €800 sub-item
+      { position: 1, quantity: 1, unit_price_minor: 100000, discount_percent: 0 },
+      { position: 2, quantity: 1, unit_price_minor: 80000, discount_percent: 0, parent_position: 1 },
+    ], 7.7);
+    // Resolved net = 80000, VAT 7.7% = 6160.
+    expect(out.netAmountMinor).toBe(80000);
+    expect(out.vatAmountMinor).toBe(6160);
+    expect(out.totalAmountMinor).toBe(86160);
+  });
+
+  it('treats empty-string parent_position as top-level (frontend may send "")', () => {
+    const out = computeTotals([
+      { position: 1, quantity: 1, unit_price_minor: 50000, discount_percent: 0, parent_position: '' },
+      { position: 2, quantity: 1, unit_price_minor: 50000, discount_percent: 0, parent_position: null },
+    ], 0);
+    expect(out.netAmountMinor).toBe(100000);
+  });
+});
+
+describe('validateLineItemHierarchy', () => {
+  it('accepts a flat list of top-level items', () => {
+    expect(() => validateLineItemHierarchy([
+      { position: 1 },
+      { position: 2 },
+      { position: 3 },
+    ])).not.toThrow();
+  });
+
+  it('accepts one level of sub-items under valid parents', () => {
+    expect(() => validateLineItemHierarchy([
+      { position: 1 },
+      { position: 2, parent_position: 1 },
+      { position: 3, parent_position: 1 },
+      { position: 4 },
+      { position: 5, parent_position: 4 },
+    ])).not.toThrow();
+  });
+
+  it('rejects duplicate positions', () => {
+    expect(() => validateLineItemHierarchy([
+      { position: 1 },
+      { position: 1 },
+    ])).toThrow(/Duplicate line item position/);
+  });
+
+  it('rejects a sub-item pointing at a missing parent', () => {
+    expect(() => validateLineItemHierarchy([
+      { position: 1, parent_position: 99 },
+    ])).toThrow(/missing parent position/);
+  });
+
+  it('rejects a sub-item under another sub-item (max 1 level deep)', () => {
+    expect(() => validateLineItemHierarchy([
+      { position: 1 },
+      { position: 2, parent_position: 1 },
+      { position: 3, parent_position: 2 },
+    ])).toThrow(/max one level deep/);
+  });
+
+  it('rejects an item whose parent is itself', () => {
+    expect(() => validateLineItemHierarchy([
+      { position: 5, parent_position: 5 },
+    ])).toThrow(/cannot be its own parent/);
+  });
+
+  it('rejects an item without a positive position', () => {
+    expect(() => validateLineItemHierarchy([
+      { position: 0 },
+    ])).toThrow(/positive position/);
+  });
+
+  it('is a no-op on empty / non-array input', () => {
+    expect(() => validateLineItemHierarchy([])).not.toThrow();
+    expect(() => validateLineItemHierarchy(null)).not.toThrow();
+    expect(() => validateLineItemHierarchy(undefined)).not.toThrow();
+  });
+});
+
+describe('insertLineItemsHierarchical', () => {
+  // Tiny trx mock — captures insert calls so we can verify the
+  // two-phase ordering and the parent-id remap. `.returning('id')`
+  // returns a synthesised id matching the call order.
+  function makeTrxMock() {
+    let nextId = 100;
+    const inserts = []; // [{ table, row }]
+    const trx = (tableName) => ({
+      insert(row) {
+        const id = nextId++;
+        inserts.push({ table: tableName, row: { ...row, id } });
+        return {
+          returning() { return Promise.resolve([{ id }]); },
+          then(resolve) { return Promise.resolve(undefined).then(resolve); }, // bare await: no returning() call
+        };
+      },
+    });
+    return { trx, inserts };
+  }
+
+  it('inserts top-level items first, then sub-items with remapped parent_line_item_id', async () => {
+    const { trx, inserts } = makeTrxMock();
+    await insertLineItemsHierarchical(trx, 'quote_line_items', 'quote_id', 1, [
+      { position: 1, description: 'Package', quantity: 1, unit_price_minor: 50000, discount_percent: 0, line_total_minor: 50000, parent_position: null },
+      { position: 2, description: 'Camera',  quantity: 1, unit_price_minor: 15000, discount_percent: 0, line_total_minor: 15000, parent_position: 1 },
+      { position: 3, description: 'Lens',    quantity: 1, unit_price_minor: 20000, discount_percent: 0, line_total_minor: 20000, parent_position: 1 },
+      { position: 4, description: 'Travel',  quantity: 1, unit_price_minor: 10000, discount_percent: 0, line_total_minor: 10000, parent_position: null },
+    ]);
+    // 4 inserts, all into quote_line_items.
+    expect(inserts).toHaveLength(4);
+    expect(inserts.every((i) => i.table === 'quote_line_items')).toBe(true);
+    // Order: top-level first (positions 1 and 4), then sub-items 2 and 3.
+    expect(inserts.map((i) => i.row.position)).toEqual([1, 4, 2, 3]);
+    // Top-level items have parent_line_item_id = null.
+    expect(inserts[0].row.parent_line_item_id).toBeNull();
+    expect(inserts[1].row.parent_line_item_id).toBeNull();
+    // Sub-items reference the id returned for position-1 parent (100).
+    expect(inserts[2].row.parent_line_item_id).toBe(100);
+    expect(inserts[3].row.parent_line_item_id).toBe(100);
+    // parent_position is stripped (wire-only field, not a DB column).
+    expect(inserts[0].row).not.toHaveProperty('parent_position');
+    expect(inserts[2].row).not.toHaveProperty('parent_position');
+  });
+
+  it('copies details_text through to the inserted row', async () => {
+    const { trx, inserts } = makeTrxMock();
+    await insertLineItemsHierarchical(trx, 'quote_line_items', 'quote_id', 1, [
+      { position: 1, description: 'P', unit_price_minor: 0, details_text: 'Includes online gallery.', parent_position: null },
+    ]);
+    expect(inserts[0].row.details_text).toBe('Includes online gallery.');
+  });
+
+  it('is a no-op on empty items array', async () => {
+    const { trx, inserts } = makeTrxMock();
+    await insertLineItemsHierarchical(trx, 'quote_line_items', 'quote_id', 1, []);
+    expect(inserts).toHaveLength(0);
+  });
+
+  it('uses the supplied ownerColumn so the same helper handles invoice_line_items', async () => {
+    const { trx, inserts } = makeTrxMock();
+    await insertLineItemsHierarchical(trx, 'invoice_line_items', 'invoice_id', 42, [
+      { position: 1, description: 'X', unit_price_minor: 100, parent_position: null },
+    ]);
+    expect(inserts[0].table).toBe('invoice_line_items');
+    expect(inserts[0].row.invoice_id).toBe(42);
+    expect(inserts[0].row).not.toHaveProperty('quote_id');
+  });
+});

backend/__tests__/services/quoteService.locks.test.js

@@ -0,0 +1,179 @@
+/**
+ * Tests for quoteService lock + state-transition guards:
+ *   - updateQuote refuses on accepted / declined / converted
+ *   - adminAcceptQuote refuses on already-terminal states + atomic
+ *     update path
+ *
+ * db deep-mocked, same chain pattern as invoiceService tests.
+ */
+
+const tableChains = {};
+function makeChain() {
+  return {
+    _firstValue: undefined,
+    _updateResult: 1,
+    _insertResult: [{ id: 999 }],
+    _selectResult: [],
+    // knex chains are thenable; mirror that so `await trx('t')...`
+    // resolves to an array of rows.
+    then: function (onResolve, onReject) {
+      return Promise.resolve(this._selectResult).then(onResolve, onReject);
+    },
+    where: jest.fn(function () { return this; }),
+    whereNotIn: jest.fn(function () { return this; }),
+    whereIn: jest.fn(function () { return this; }),
+    whereNull: jest.fn(function () { return this; }),
+    andWhere: jest.fn(function () { return this; }),
+    orderBy: jest.fn(function () { return this; }),
+    limit: jest.fn(function () { return this; }),
+    select: jest.fn(function () { return Promise.resolve(this._selectResult); }),
+    first: jest.fn(function () { return Promise.resolve(this._firstValue); }),
+    update: jest.fn(function () { return Promise.resolve(this._updateResult); }),
+    insert: jest.fn(function () { return this; }),
+    returning: jest.fn(function () { return Promise.resolve(this._insertResult); }),
+    del: jest.fn(function () { return Promise.resolve(1); }),
+    leftJoin: jest.fn(function () { return this; }),
+    sum: jest.fn(function () { return this; }),
+    count: jest.fn(function () { return this; }),
+    clone: jest.fn(function () { return this; }),
+    clearSelect: jest.fn(function () { return this; }),
+    clearOrder: jest.fn(function () { return this; }),
+    offset: jest.fn(function () { return this; }),
+  };
+}
+function pickChainFor(name) {
+  if (!tableChains[name]) tableChains[name] = makeChain();
+  return tableChains[name];
+}
+const mockDbFn = jest.fn((name) => pickChainFor(name));
+mockDbFn.transaction = jest.fn(async (cb) => cb(mockDbFn));
+
+jest.mock('../../src/database/db', () => ({
+  db: mockDbFn,
+  withRetry: jest.fn(async (fn) => fn()),
+  logActivity: jest.fn(async () => {}),
+}));
+
+jest.mock('../../src/utils/appSettings', () => ({
+  getAppSetting: jest.fn(async () => null),
+}));
+jest.mock('../../src/services/businessProfileService', () => ({
+  getProfile: jest.fn(async () => ({ profile: { default_currency: 'CHF' } })),
+  resolveBankAccountForCurrency: jest.fn(async () => null),
+}));
+jest.mock('../../src/services/pdfService', () => ({
+  renderQuoteToBuffer: jest.fn(async () => Buffer.from('pdf')),
+  renderInvoiceToBuffer: jest.fn(async () => Buffer.from('pdf')),
+}));
+jest.mock('../../src/services/emailProcessor', () => ({
+  queueEmail: jest.fn(async () => {}),
+}));
+jest.mock('../../src/utils/logger', () => ({
+  info: jest.fn(), warn: jest.fn(), error: jest.fn(),
+}));
+
+const quoteService = require('../../src/services/quoteService');
+
+function resetChains() {
+  for (const k of Object.keys(tableChains)) delete tableChains[k];
+}
+
+describe('quoteService.updateQuote — lock guards', () => {
+  beforeEach(() => resetChains());
+
+  it('404s when the quote does not exist', async () => {
+    pickChainFor('quotes')._firstValue = null;
+    await expect(quoteService.updateQuote(99, {}, 1))
+      .rejects.toMatchObject({ statusCode: 404 });
+  });
+
+  it('locks accepted quotes', async () => {
+    pickChainFor('quotes')._firstValue = { id: 1, status: 'accepted' };
+    await expect(quoteService.updateQuote(1, {}, 1))
+      .rejects.toMatchObject({ statusCode: 409, code: 'QUOTE_LOCKED' });
+  });
+
+  it('locks declined quotes', async () => {
+    pickChainFor('quotes')._firstValue = { id: 1, status: 'declined' };
+    await expect(quoteService.updateQuote(1, {}, 1))
+      .rejects.toMatchObject({ statusCode: 409, code: 'QUOTE_LOCKED' });
+  });
+
+  it('locks converted quotes', async () => {
+    pickChainFor('quotes')._firstValue = { id: 1, status: 'converted' };
+    await expect(quoteService.updateQuote(1, {}, 1))
+      .rejects.toMatchObject({ statusCode: 409, code: 'QUOTE_LOCKED' });
+  });
+
+  it('allows edits on draft + sent + expired (no QUOTE_LOCKED throw)', async () => {
+    for (const status of ['draft', 'sent', 'expired']) {
+      pickChainFor('quotes')._firstValue = {
+        id: 1, status, vat_rate: 0, shipping_amount_minor: 0,
+      };
+      // The lock check sits at the TOP of updateQuote. The
+      // observable behavior we care about is "no QUOTE_LOCKED
+      // 409 thrown on these statuses". The full transaction
+      // path may resolve to anything (incl. undefined) since
+      // the test mocks the trx callback — that's fine.
+      let err = null;
+      try { await quoteService.updateQuote(1, { lineItems: [] }, 1); }
+      catch (e) { err = e; }
+      if (err) {
+        // Any error other than the QUOTE_LOCKED guard is allowed
+        // (we're not exercising the full path here).
+        expect(err.code).not.toBe('QUOTE_LOCKED');
+      }
+      resetChains();
+    }
+  });
+});
+
+describe('quoteService.adminAcceptQuote', () => {
+  beforeEach(() => resetChains());
+
+  it('404s when the quote does not exist', async () => {
+    pickChainFor('quotes')._firstValue = null;
+    await expect(quoteService.adminAcceptQuote(99, 1))
+      .rejects.toMatchObject({ statusCode: 404 });
+  });
+
+  it('refuses already-accepted quotes', async () => {
+    pickChainFor('quotes')._firstValue = { id: 1, status: 'accepted' };
+    await expect(quoteService.adminAcceptQuote(1, 1))
+      .rejects.toMatchObject({ statusCode: 409, code: 'QUOTE_ALREADY_ACCEPTED' });
+  });
+
+  it('refuses declined quotes', async () => {
+    pickChainFor('quotes')._firstValue = { id: 1, status: 'declined' };
+    await expect(quoteService.adminAcceptQuote(1, 1))
+      .rejects.toMatchObject({ statusCode: 409, code: 'QUOTE_DECLINED' });
+  });
+
+  it('refuses converted quotes', async () => {
+    pickChainFor('quotes')._firstValue = { id: 1, status: 'converted' };
+    await expect(quoteService.adminAcceptQuote(1, 1))
+      .rejects.toMatchObject({ statusCode: 409, code: 'QUOTE_CONVERTED' });
+  });
+
+  it('accepts draft / sent / expired and returns lockedAt', async () => {
+    for (const status of ['draft', 'sent', 'expired']) {
+      pickChainFor('quotes')._firstValue = {
+        id: 1, status, customer_account_id: 5,
+        currency: 'CHF', language: 'de',
+        quote_number: 'Q-2026-0001',
+        total_amount_minor: 10000,
+        event_name: null,
+      };
+      pickChainFor('customer_accounts')._firstValue = {
+        id: 5, email: 'c@example.com', display_name: 'Test',
+      };
+      pickChainFor('quote_line_items')._selectResult = [];
+      pickChainFor('business_profile')._firstValue = null;
+
+      const result = await quoteService.adminAcceptQuote(1, 42);
+      expect(result.status).toBe('accepted');
+      expect(result.lockedAt).toBeInstanceOf(Date);
+      resetChains();
+    }
+  });
+});

backend/__tests__/services/rasterizePageCap.test.js

@@ -0,0 +1,10 @@
+const rasterizeService = require('../../src/services/rasterizeService');
+
+// The page-range guard runs BEFORE any fs/pdftoppm work, so these reject
+// without touching the binary or disk (PR #622 concern 6).
+describe('getRenderedPagePath page-range guard', () => {
+  it.each([0, -1, 201, 1000, 1.5, NaN])('rejects out-of-range page %p', async (page) => {
+    await expect(rasterizeService.getRenderedPagePath(1, '/tmp/does-not-exist.pdf', page))
+      .rejects.toMatchObject({ statusCode: 400, code: 'PAGE_OUT_OF_RANGE' });
+  });
+});

backend/__tests__/services/rybbitAdapter.test.js

@@ -0,0 +1,115 @@
+/**
+ * Tests for the Rybbit metrics-API adapter (#663 Phase 1). Mirrors the
+ * `umamiAdapter` test contract: missing config / URL shape / encoding /
+ * normalisation / unknown-bucket drop / failure modes.
+ *
+ * Rybbit's documented endpoint is `/api/site/{websiteId}/breakdown` with
+ * `dimension=device`; we accept both bare-array and `{ data: [...] }`
+ * envelopes since their docs hint at minor v0 → v1 shape variation.
+ */
+
+const { buildAdapter } = require('../../src/services/trackers/rybbitAdapter');
+
+const ORIGINAL_FETCH = global.fetch;
+
+afterEach(() => {
+  global.fetch = ORIGINAL_FETCH;
+});
+
+function mockJson(body, { status = 200 } = {}) {
+  global.fetch = jest.fn(async () => ({
+    ok: status >= 200 && status < 300,
+    status,
+    json: async () => body,
+  }));
+}
+
+const valid = { baseUrl: 'https://r.example.com', websiteId: 'rsite-789', apiKey: 'rkey' };
+
+describe('rybbitAdapter.fetchDeviceBreakdown (#663)', () => {
+  test('returns null when config is incomplete', async () => {
+    expect(await buildAdapter({}).fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+    expect(global.fetch).toBe(ORIGINAL_FETCH);
+  });
+
+  test('builds the expected URL + sends Bearer auth', async () => {
+    mockJson([{ device: 'desktop', sessions: 10 }]);
+    await buildAdapter({ ...valid, baseUrl: 'https://r.example.com/' })
+      .fetchDeviceBreakdown({ startMs: 1700000000000, endMs: 1700003600000 });
+    const [calledUrl, init] = global.fetch.mock.calls[0];
+    expect(calledUrl).toMatch(/^https:\/\/r\.example\.com\/api\/site\/rsite-789\/breakdown\?dimension=device&start=.*&end=.*$/);
+    expect(init.headers.Authorization).toBe('Bearer rkey');
+    expect(init.method).toBe('GET');
+  });
+
+  test('URL-encodes the websiteId for reserved chars', async () => {
+    mockJson([{ device: 'desktop', sessions: 1 }]);
+    await buildAdapter({ ...valid, websiteId: 'a/b?c' }).fetchDeviceBreakdown({ startMs: 0, endMs: 0 });
+    const [calledUrl] = global.fetch.mock.calls[0];
+    expect(calledUrl).toContain('/api/site/a%2Fb%3Fc/breakdown');
+  });
+
+  test('normalises a typical {device, sessions} payload into percentages', async () => {
+    mockJson([
+      { device: 'desktop', sessions: 60 },
+      { device: 'mobile', sessions: 30 },
+      { device: 'tablet', sessions: 10 },
+    ]);
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 }))
+      .toEqual({ desktop: 60, mobile: 30, tablet: 10 });
+  });
+
+  test('accepts the {data: [...]} envelope variant', async () => {
+    mockJson({ data: [
+      { device: 'desktop', sessions: 1 },
+      { device: 'mobile', sessions: 3 },
+    ] });
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 }))
+      .toEqual({ desktop: 25, mobile: 75, tablet: 0 });
+  });
+
+  test('falls back to `visitors` when `sessions` is absent', async () => {
+    mockJson([
+      { device: 'desktop', visitors: 80 },
+      { device: 'mobile', visitors: 20 },
+    ]);
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 }))
+      .toEqual({ desktop: 80, mobile: 20, tablet: 0 });
+  });
+
+  test('tolerates a `dimension` key as the bucket label', async () => {
+    mockJson([
+      { dimension: 'desktop', sessions: 50 },
+      { dimension: 'mobile', sessions: 50 },
+    ]);
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 }))
+      .toEqual({ desktop: 50, mobile: 50, tablet: 0 });
+  });
+
+  test('drops unknown buckets', async () => {
+    mockJson([
+      { device: 'desktop', sessions: 80 },
+      { device: 'mobile', sessions: 20 },
+      { device: 'fridge', sessions: 100 },
+    ]);
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 }))
+      .toEqual({ desktop: 80, mobile: 20, tablet: 0 });
+  });
+
+  test('returns null on empty payload, non-2xx, invalid JSON, and network error', async () => {
+    mockJson([]);
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+
+    mockJson({ error: 'unauthorized' }, { status: 401 });
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+
+    global.fetch = jest.fn(async () => ({
+      ok: true, status: 200,
+      json: async () => { throw new SyntaxError('not json'); },
+    }));
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+
+    global.fetch = jest.fn(async () => { throw new Error('ECONNREFUSED'); });
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+  });
+});

backend/__tests__/services/taxReportPdf.test.js

@@ -0,0 +1,263 @@
+/**
+ * Smoke tests for taxReportService.renderTaxReportPdf and
+ * renderTaxReportCsv. We deep-mock the db (canned invoice rows) +
+ * businessProfileService (canned issuer) and assert that the
+ * rendered output meets a few hard requirements:
+ *
+ *   - PDF starts with the %PDF magic bytes, is non-empty
+ *   - CSV header contains the localised column names
+ *   - CSV body contains the invoice numbers in order
+ *   - CSV totals row contains the grand totals
+ */
+
+let invoiceRowsForRun = [];
+let replacementsRowsForRun = [];
+let callCount = 0;
+
+function makeChain(initialRows) {
+  return {
+    _rows: initialRows,
+    then(onResolve, onReject) {
+      return Promise.resolve(this._rows).then(onResolve, onReject);
+    },
+    leftJoin: jest.fn(function () { return this; }),
+    where: jest.fn(function () { return this; }),
+    whereNot: jest.fn(function () { return this; }),
+    whereIn: jest.fn(function () { return this; }),
+    whereNotIn: jest.fn(function () { return this; }),
+    whereBetween: jest.fn(function () { return this; }),
+    whereRaw: jest.fn(function () { return this; }),
+    orderBy: jest.fn(function () { return this; }),
+    orderByRaw: jest.fn(function () { return this; }),
+    select: jest.fn(function () { return Promise.resolve(this._rows); }),
+  };
+}
+
+const mockDbFn = jest.fn((tableName) => {
+  // Route by table name when supplied — the Skonto aggregate (added
+  // by migration 126) queries `invoice_payment_log`; the #4 cost side
+  // queries `inbound_documents` + `expenses`; everything else (main
+  // listing, replacements lookup) hits `invoices`.
+  if (tableName === 'invoice_payment_log') return makeChain([]);
+  if (tableName === 'inbound_documents') return makeChain([]);
+  if (tableName === 'expenses') return makeChain([]);
+  callCount += 1;
+  if (callCount === 1) return makeChain(invoiceRowsForRun);
+  return makeChain(replacementsRowsForRun);
+});
+// `.raw()` is used in the .select() column list for the event_name
+// COALESCE (migration 123). The chain's select() ignores its
+// arguments so the raw() return value just needs to exist.
+mockDbFn.raw = jest.fn((sql) => sql);
+// #4 loadCosts schema-guards each cost table; default the PDF/CSV
+// fixtures to "no accounting tables" so these renderers exercise the
+// revenue path unchanged.
+mockDbFn.schema = { hasTable: jest.fn(async () => false) };
+
+jest.mock('../../src/database/db', () => ({
+  db: mockDbFn,
+  withRetry: jest.fn(async (fn) => fn()),
+}));
+
+jest.mock('../../src/services/businessProfileService', () => ({
+  getProfile: jest.fn(async () => ({
+    profile: {
+      company_name: 'ACME Test GmbH',
+      address_line1: 'Teststrasse 1',
+      postal_code: '8000',
+      city: 'Zürich',
+      country_code: 'CH',
+      email: 'hello@example.com',
+      default_locale: 'de',
+      default_currency: 'CHF',
+      pdf_show_logo: 1,
+      pdf_show_company_name: 1,
+      pdf_logo_height: 56,
+      pdf_company_name_inline: 0,
+      pdf_folding_marks: 'none',
+      logo_path: null,
+      pdf_font_ttf_path: null,
+    },
+    bankAccounts: [],
+  })),
+}));
+
+jest.mock('../../src/utils/appSettings', () => ({
+  getAppSetting: jest.fn(async () => ({ format: 'DD.MM.YYYY' })),
+}));
+
+const taxReportService = require('../../src/services/taxReportService');
+
+beforeEach(() => {
+  invoiceRowsForRun = [];
+  replacementsRowsForRun = [];
+  callCount = 0;
+  mockDbFn.mockClear();
+});
+
+const SAMPLE_ROW = (override = {}) => ({
+  id: 1, invoice_number: 'R-2026-0001', issue_date: '2026-01-15',
+  currency: 'CHF', status: 'paid', vat_rate: 7.7,
+  net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770,
+  late_fee_amount_minor: 0, replaces_invoice_id: null,
+  customer_company_name: 'Test Kunde GmbH', customer_first_name: null,
+  customer_last_name: null, customer_display_name: null, customer_email: null,
+  event_name: 'Hochzeit Müller',
+  ...override,
+});
+
+describe('renderTaxReportPdf', () => {
+  it('produces a non-empty PDF buffer with the %PDF magic header', async () => {
+    invoiceRowsForRun = [SAMPLE_ROW()];
+    const buf = await taxReportService.renderTaxReportPdf({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF',
+    });
+    expect(Buffer.isBuffer(buf)).toBe(true);
+    expect(buf.length).toBeGreaterThan(500);
+    expect(buf.slice(0, 4).toString('ascii')).toBe('%PDF');
+  });
+
+  it('renders a header even when no invoices are in the period', async () => {
+    invoiceRowsForRun = [];
+    const buf = await taxReportService.renderTaxReportPdf({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF',
+    });
+    expect(buf.length).toBeGreaterThan(500);
+    expect(buf.slice(0, 4).toString('ascii')).toBe('%PDF');
+  });
+
+  it('renders successfully when cancelled rows are present', async () => {
+    invoiceRowsForRun = [
+      SAMPLE_ROW({ id: 1, invoice_number: 'R-2026-0001', status: 'cancelled' }),
+      SAMPLE_ROW({ id: 2, invoice_number: 'R-2026-0002', replaces_invoice_id: 1 }),
+    ];
+    replacementsRowsForRun = [{ replaces_invoice_id: 1, invoice_number: 'R-2026-0002' }];
+    const buf = await taxReportService.renderTaxReportPdf({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', locale: 'de',
+    });
+    expect(buf.length).toBeGreaterThan(500);
+    expect(buf.slice(0, 4).toString('ascii')).toBe('%PDF');
+  });
+
+  it('renders without throwing when a row has long text that must wrap', async () => {
+    // Customer + event labels long enough to force multi-line wrap
+    // in their narrow columns. The dynamic row-height logic should
+    // grow the row to fit rather than overlapping the next one.
+    invoiceRowsForRun = [
+      SAMPLE_ROW({
+        customer_company_name: 'Sehr lange Firmenbezeichnung mit Adresszusatz GmbH & Co. KG',
+        event_name: 'Hochzeit Müller & Schmidt — ganztägige Reportage inkl. Empfang und Trauung',
+      }),
+      SAMPLE_ROW({ id: 2, invoice_number: 'R-2026-0002' }),
+    ];
+    const buf = await taxReportService.renderTaxReportPdf({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', locale: 'de',
+    });
+    expect(buf.length).toBeGreaterThan(500);
+    expect(buf.slice(0, 4).toString('ascii')).toBe('%PDF');
+  });
+
+  it('honours the locale parameter (en) without throwing', async () => {
+    invoiceRowsForRun = [SAMPLE_ROW()];
+    const buf = await taxReportService.renderTaxReportPdf({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', locale: 'en',
+    });
+    expect(buf.slice(0, 4).toString('ascii')).toBe('%PDF');
+  });
+
+  // Regression: the page-number footer used to place its baseline
+  // inside the bottom margin, which made PDFKit auto-paginate one
+  // empty page per existing page (so a 1-page report ended up as 2,
+  // and so on). Counting `/Type /Page` markers in the raw PDF bytes
+  // is the cheapest way to detect a recurrence without parsing the
+  // PDF — every page object in the xref table carries that marker
+  // exactly once.
+  it('does not duplicate pages when stamping the page-number footer', async () => {
+    invoiceRowsForRun = [SAMPLE_ROW()];
+    const buf = await taxReportService.renderTaxReportPdf({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', locale: 'de',
+    });
+    const pageMarkers = buf.toString('binary').match(/\/Type\s*\/Page\b(?!s)/g) || [];
+    // Small single-row report should fit on a single page. The
+    // previous buggy renderer produced 2 (1 content + 1 footer-only).
+    expect(pageMarkers.length).toBe(1);
+  });
+});
+
+describe('renderTaxReportCsv', () => {
+  it('returns a CSV blob with the de localised header row', async () => {
+    invoiceRowsForRun = [SAMPLE_ROW()];
+    const { content, filename, contentType } = await taxReportService.renderTaxReportCsv({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', locale: 'de',
+    });
+    expect(contentType).toMatch(/text\/csv/);
+    expect(filename).toBe('tax_report_2026-01-01_to_2026-03-31_CHF.csv');
+    const lines = content.split('\r\n');
+    // Unified ledger CSV: Typ / Referenz / Kunde-Lieferant columns replace the
+    // old Rechnung/Kunde split.
+    expect(lines[0]).toContain('Typ');       // de header for tax_col_type
+    expect(lines[0]).toContain('Referenz');  // de header for tax_col_reference
+    expect(lines[0]).toContain('Kunde');     // "Kunde / Lieferant"
+    expect(lines[0]).toContain('Netto');
+  });
+
+  it('lists each invoice on its own row in order', async () => {
+    invoiceRowsForRun = [
+      SAMPLE_ROW({ id: 1, invoice_number: 'R-2026-0001' }),
+      SAMPLE_ROW({ id: 2, invoice_number: 'R-2026-0002' }),
+      SAMPLE_ROW({ id: 3, invoice_number: 'R-2026-0003' }),
+    ];
+    const { content } = await taxReportService.renderTaxReportCsv({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', locale: 'en',
+    });
+    const idxA = content.indexOf('R-2026-0001');
+    const idxB = content.indexOf('R-2026-0002');
+    const idxC = content.indexOf('R-2026-0003');
+    expect(idxA).toBeGreaterThan(0);
+    expect(idxB).toBeGreaterThan(idxA);
+    expect(idxC).toBeGreaterThan(idxB);
+  });
+
+  it('appends a trailing totals row with the grand totals', async () => {
+    invoiceRowsForRun = [
+      SAMPLE_ROW({
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770,
+      }),
+      SAMPLE_ROW({
+        id: 2, invoice_number: 'R-2026-0002',
+        net_amount_minor: 5000, vat_amount_minor: 385, total_amount_minor: 5385,
+      }),
+    ];
+    const { content } = await taxReportService.renderTaxReportCsv({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', locale: 'en',
+    });
+    // Grand totals: net = 150.00, vat = 11.55, total = 161.55.
+    expect(content).toMatch(/"150\.00"/);
+    expect(content).toMatch(/"11\.55"/);
+    expect(content).toMatch(/"161\.55"/);
+  });
+
+  it('flags a cancelled row with a "(Cancelled)" suffix on its Reference cell', async () => {
+    invoiceRowsForRun = [
+      SAMPLE_ROW({ status: 'cancelled' }),
+    ];
+    const { content } = await taxReportService.renderTaxReportCsv({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', locale: 'en',
+    });
+    // Unified ledger CSV has no separate cancelled column — a cancelled row is
+    // flagged by appending the localised "(Cancelled)" tag to its Reference.
+    const dataRow = content.split('\r\n')[1];
+    expect(dataRow).toContain('R-2026-0001 (Cancelled)');
+  });
+
+  it('uses CRLF line endings (RFC 4180) and BOM-free body', async () => {
+    invoiceRowsForRun = [SAMPLE_ROW()];
+    const { content } = await taxReportService.renderTaxReportCsv({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', locale: 'en',
+    });
+    expect(content).toContain('\r\n');
+    // The route wraps the BOM around the content; the service output
+    // itself is BOM-free so callers (tests) get a clean string.
+    expect(content.charCodeAt(0)).not.toBe(0xFEFF);
+  });
+});

backend/__tests__/services/taxReportService.test.js

@@ -0,0 +1,572 @@
+/**
+ * Tests for taxReportService.
+ *
+ * Two layers:
+ *   1. Pure helpers (grossUpLateFee, computeReportedAmounts,
+ *      buildCustomerLabel) — no db mock needed.
+ *   2. getTaxReport — db chain deep-mocked so we can feed canned
+ *      invoice rows and assert the filter/bucket/total math.
+ */
+
+// ----- mock db chain ---------------------------------------------------
+//
+// taxReportService builds a single chain:
+//   db('invoices').leftJoin(...).leftJoin(...).whereBetween(...)
+//     .where(...).whereIn(...).orderBy(...).select(...)
+// and then for cancelled ids:
+//   db('invoices').whereIn('replaces_invoice_id', ids).select(...)
+//
+// We use one shared chain factory that returns canned rows from
+// `_selectResult` for the main query, and lets us swap the result
+// for the replacements lookup via a "second-call" hook.
+
+let invoiceRowsForRun = [];
+let replacementsRowsForRun = [];
+let inboundRowsForRun = [];
+let expenseRowsForRun = [];
+let costTablesPresent = false;
+let callCount = 0;
+
+function makeChain(initialRows) {
+  const c = {
+    _rows: initialRows,
+    then: function (onResolve, onReject) {
+      return Promise.resolve(this._rows).then(onResolve, onReject);
+    },
+    leftJoin: jest.fn(function () { return this; }),
+    where: jest.fn(function () { return this; }),
+    whereNot: jest.fn(function () { return this; }),
+    whereIn: jest.fn(function () { return this; }),
+    whereNotIn: jest.fn(function () { return this; }),
+    whereBetween: jest.fn(function () { return this; }),
+    whereRaw: jest.fn(function () { return this; }),
+    orderBy: jest.fn(function () { return this; }),
+    orderByRaw: jest.fn(function () { return this; }),
+    select: jest.fn(function () { return Promise.resolve(this._rows); }),
+  };
+  return c;
+}
+
+const mockDbFn = jest.fn((tableName) => {
+  // Migration 126 added a Skonto aggregate that hits
+  // `invoice_payment_log` — route those explicitly to an empty list so
+  // the test surface stays focused on the invoices/replacements flow.
+  if (tableName === 'invoice_payment_log') return makeChain([]);
+  // Cost side (#4): incoming invoices + internal expenses.
+  if (tableName === 'inbound_documents') return makeChain(inboundRowsForRun);
+  if (tableName === 'expenses') return makeChain(expenseRowsForRun);
+  // `invoices` is queried for the main listing (call 1) and, when there
+  // are cancelled rows, the replacements lookup (call 2).
+  callCount += 1;
+  if (callCount === 1) return makeChain(invoiceRowsForRun);
+  return makeChain(replacementsRowsForRun);
+});
+// loadCosts (#4) schema-guards each cost table. Default off so the
+// revenue-only tests are unaffected; cost-side tests flip it on.
+mockDbFn.schema = { hasTable: jest.fn(async () => costTablesPresent) };
+// `.raw()` is used in the .select() column list for the event_name
+// COALESCE (migration 123). The chain's select() ignores its
+// arguments and returns the mocked rows, so the raw() return value
+// just needs to exist — a string is fine.
+mockDbFn.raw = jest.fn((sql) => sql);
+
+jest.mock('../../src/database/db', () => ({
+  db: mockDbFn,
+  withRetry: jest.fn(async (fn) => fn()),
+}));
+
+const taxReportService = require('../../src/services/taxReportService');
+const { grossUpLateFee, computeReportedAmounts, buildCustomerLabel } = taxReportService._internal;
+
+beforeEach(() => {
+  invoiceRowsForRun = [];
+  replacementsRowsForRun = [];
+  inboundRowsForRun = [];
+  expenseRowsForRun = [];
+  costTablesPresent = false;
+  callCount = 0;
+  mockDbFn.mockClear();
+});
+
+// ----- pure helpers ----------------------------------------------------
+
+describe('grossUpLateFee', () => {
+  it('returns zeros for a zero or negative fee', () => {
+    expect(grossUpLateFee(0, 7.7)).toEqual({ net: 0, vat: 0 });
+    expect(grossUpLateFee(-100, 7.7)).toEqual({ net: 0, vat: 0 });
+    expect(grossUpLateFee(null, 7.7)).toEqual({ net: 0, vat: 0 });
+  });
+
+  it('returns the whole fee as net when VAT rate is 0', () => {
+    expect(grossUpLateFee(2500, 0)).toEqual({ net: 2500, vat: 0 });
+    // Missing/invalid rate is treated the same.
+    expect(grossUpLateFee(2500, null)).toEqual({ net: 2500, vat: 0 });
+  });
+
+  it('splits a 25.00 CHF fee at 7.7% into net 23.21 + VAT 1.79', () => {
+    // 2500 / 1.077 = 2321.265… → rounds to 2321; 2500 - 2321 = 179.
+    expect(grossUpLateFee(2500, 7.7)).toEqual({ net: 2321, vat: 179 });
+  });
+
+  it('guarantees net + vat === gross input (no rounding drift)', () => {
+    for (const fee of [1, 2500, 9999, 12345, 250000]) {
+      for (const rate of [7.7, 8.1, 19, 20.5]) {
+        const { net, vat } = grossUpLateFee(fee, rate);
+        expect(net + vat).toBe(fee);
+      }
+    }
+  });
+});
+
+describe('computeReportedAmounts', () => {
+  it('returns stored amounts unchanged when late fee is zero', () => {
+    const r = computeReportedAmounts({
+      net_amount_minor: 10000,
+      vat_amount_minor: 770,
+      total_amount_minor: 10770,
+      late_fee_amount_minor: 0,
+      vat_rate: 7.7,
+    });
+    expect(r).toEqual({ netMinor: 10000, vatMinor: 770, totalMinor: 10770 });
+  });
+
+  it('adds the late-fee net/vat split onto the stored net + vat', () => {
+    const r = computeReportedAmounts({
+      net_amount_minor: 10000,
+      vat_amount_minor: 770,
+      total_amount_minor: 13270, // 10000 + 770 + 2500 late fee
+      late_fee_amount_minor: 2500,
+      vat_rate: 7.7,
+    });
+    expect(r.netMinor).toBe(10000 + 2321);
+    expect(r.vatMinor).toBe(770 + 179);
+    expect(r.totalMinor).toBe(13270);
+  });
+
+  it('keeps total at the stored total even when late fee is present', () => {
+    // The stored total already includes the late fee — we never
+    // recompute it from net + vat in the report.
+    const r = computeReportedAmounts({
+      net_amount_minor: 50000,
+      vat_amount_minor: 4050,
+      total_amount_minor: 56550,
+      late_fee_amount_minor: 2500,
+      vat_rate: 8.1,
+    });
+    expect(r.totalMinor).toBe(56550);
+  });
+});
+
+describe('buildCustomerLabel', () => {
+  it('prefers company_name when present', () => {
+    expect(buildCustomerLabel({
+      customer_company_name: 'ACME GmbH',
+      customer_first_name: 'Anna',
+      customer_last_name: 'Beispiel',
+      customer_email: 'anna@example.com',
+    })).toBe('ACME GmbH');
+  });
+
+  it('falls back to first + last name', () => {
+    expect(buildCustomerLabel({
+      customer_company_name: '',
+      customer_first_name: 'Anna',
+      customer_last_name: 'Beispiel',
+    })).toBe('Anna Beispiel');
+  });
+
+  it('falls back to display_name when no name parts', () => {
+    expect(buildCustomerLabel({
+      customer_display_name: 'Anna B.',
+    })).toBe('Anna B.');
+  });
+
+  it('falls back to email as a last resort', () => {
+    expect(buildCustomerLabel({ customer_email: 'anna@example.com' })).toBe('anna@example.com');
+  });
+
+  it('returns empty string when nothing usable is present', () => {
+    expect(buildCustomerLabel({})).toBe('');
+  });
+});
+
+// ----- getTaxReport ----------------------------------------------------
+
+describe('getTaxReport', () => {
+  it('throws when from/to or currency are missing', async () => {
+    await expect(taxReportService.getTaxReport({})).rejects.toThrow(/from.+to/);
+    await expect(taxReportService.getTaxReport({ from: '2026-01-01', to: '2026-03-31' }))
+      .rejects.toThrow(/currency/);
+  });
+
+  it('returns rows + totals for a clean period with one paid invoice', async () => {
+    invoiceRowsForRun = [
+      {
+        id: 1, invoice_number: 'R-2026-0001', issue_date: '2026-01-15',
+        currency: 'CHF', status: 'paid', vat_rate: 7.7,
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770,
+        late_fee_amount_minor: 0, replaces_invoice_id: null,
+        customer_company_name: 'ACME GmbH', customer_first_name: null, customer_last_name: null,
+        customer_display_name: null, customer_email: null, event_name: 'Wedding A',
+      },
+    ];
+    const out = await taxReportService.getTaxReport({
+      from: '2026-01-01', to: '2026-03-31', currency: 'chf', // lowercase → coerced
+    });
+    expect(out.currency).toBe('CHF');
+    expect(out.rows).toHaveLength(1);
+    expect(out.rows[0]).toMatchObject({
+      invoiceNumber: 'R-2026-0001',
+      isCancelled: false,
+      customerLabel: 'ACME GmbH',
+      eventName: 'Wedding A',
+      netMinor: 10000,
+      vatMinor: 770,
+      totalMinor: 10770,
+    });
+    expect(out.grandTotalNet).toBe(10000);
+    expect(out.grandTotalVat).toBe(770);
+    expect(out.grandTotal).toBe(10770);
+    expect(out.cancelledCount).toBe(0);
+    expect(out.totalsByVatRate).toEqual([
+      { vatRate: 7.7, netMinor: 10000, vatMinor: 770, totalMinor: 10770 },
+    ]);
+    expect(out.period).toEqual({ from: '2026-01-01', to: '2026-03-31' });
+  });
+
+  it('keeps cancelled rows visible but excludes them from totals', async () => {
+    invoiceRowsForRun = [
+      {
+        id: 10, invoice_number: 'R-2026-0010', issue_date: '2026-02-01',
+        currency: 'CHF', status: 'cancelled', vat_rate: 7.7,
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770,
+        late_fee_amount_minor: 0, replaces_invoice_id: null,
+        customer_company_name: 'ACME GmbH', customer_first_name: null, customer_last_name: null,
+        customer_display_name: null, customer_email: null, event_name: 'Wedding A',
+      },
+      {
+        id: 11, invoice_number: 'R-2026-0011', issue_date: '2026-02-02',
+        currency: 'CHF', status: 'paid', vat_rate: 7.7,
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770,
+        late_fee_amount_minor: 0, replaces_invoice_id: 10,
+        customer_company_name: 'ACME GmbH', customer_first_name: null, customer_last_name: null,
+        customer_display_name: null, customer_email: null, event_name: 'Wedding A',
+      },
+    ];
+    // The supersedes lookup query: row 11 supersedes row 10.
+    replacementsRowsForRun = [{ replaces_invoice_id: 10, invoice_number: 'R-2026-0011' }];
+
+    const out = await taxReportService.getTaxReport({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF',
+    });
+    expect(out.rows).toHaveLength(2);
+    const cancelled = out.rows.find((r) => r.invoiceNumber === 'R-2026-0010');
+    const replacement = out.rows.find((r) => r.invoiceNumber === 'R-2026-0011');
+    expect(cancelled.isCancelled).toBe(true);
+    expect(cancelled.replacedByInvoiceNumber).toBe('R-2026-0011');
+    expect(replacement.isCancelled).toBe(false);
+
+    // Totals: only the replacement counts.
+    expect(out.grandTotalNet).toBe(10000);
+    expect(out.grandTotalVat).toBe(770);
+    expect(out.grandTotal).toBe(10770);
+    expect(out.cancelledCount).toBe(1);
+    expect(out.totalsByVatRate).toEqual([
+      { vatRate: 7.7, netMinor: 10000, vatMinor: 770, totalMinor: 10770 },
+    ]);
+  });
+
+  it('excludes the negative Storno row from totals on a cancel + reissue (PR #636 audit)', async () => {
+    // The real cancel-and-reissue flow produces THREE rows in the period:
+    // the cancelled original, its negative Storno (kind='storno', status='sent'),
+    // and the reissue. Totals must read the reissued amount, not 0.
+    invoiceRowsForRun = [
+      {
+        id: 20, invoice_number: 'R-2026-0020', issue_date: '2026-02-01',
+        currency: 'CHF', status: 'cancelled', kind: 'invoice', vat_rate: 7.7,
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770,
+        late_fee_amount_minor: 0, replaces_invoice_id: null,
+        customer_company_name: 'ACME GmbH', event_name: 'Wedding A',
+      },
+      {
+        id: 21, invoice_number: 'R-2026-0020-S', issue_date: '2026-02-02',
+        currency: 'CHF', status: 'sent', kind: 'storno', vat_rate: 7.7,
+        net_amount_minor: -10000, vat_amount_minor: -770, total_amount_minor: -10770,
+        late_fee_amount_minor: 0, replaces_invoice_id: null,
+        customer_company_name: 'ACME GmbH', event_name: 'Wedding A',
+      },
+      {
+        id: 22, invoice_number: 'R-2026-0021', issue_date: '2026-02-03',
+        currency: 'CHF', status: 'paid', kind: 'invoice', vat_rate: 7.7,
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770,
+        late_fee_amount_minor: 0, replaces_invoice_id: 20,
+        customer_company_name: 'ACME GmbH', event_name: 'Wedding A',
+      },
+    ];
+    replacementsRowsForRun = [{ replaces_invoice_id: 20, invoice_number: 'R-2026-0021' }];
+
+    const out = await taxReportService.getTaxReport({ from: '2026-01-01', to: '2026-03-31', currency: 'CHF' });
+    expect(out.rows).toHaveLength(3); // all three stay visible for the audit trail
+    // The negative storno must NOT net against the totals (the cancelled
+    // original is already excluded) — the reissued revenue stands.
+    expect(out.grandTotalNet).toBe(10000);
+    expect(out.grandTotalVat).toBe(770);
+    expect(out.grandTotal).toBe(10770);
+    expect(out.totalsByVatRate).toEqual([
+      { vatRate: 7.7, netMinor: 10000, vatMinor: 770, totalMinor: 10770 },
+    ]);
+  });
+
+  it('buckets totals by VAT rate (e.g. 7.7 + 8.1 in same period)', async () => {
+    invoiceRowsForRun = [
+      {
+        id: 1, invoice_number: 'R-2026-0001', issue_date: '2026-01-01',
+        currency: 'CHF', status: 'paid', vat_rate: 7.7,
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770,
+        late_fee_amount_minor: 0, replaces_invoice_id: null,
+        customer_company_name: 'A', event_name: 'X',
+      },
+      {
+        id: 2, invoice_number: 'R-2026-0002', issue_date: '2026-01-02',
+        currency: 'CHF', status: 'paid', vat_rate: 8.1,
+        net_amount_minor: 20000, vat_amount_minor: 1620, total_amount_minor: 21620,
+        late_fee_amount_minor: 0, replaces_invoice_id: null,
+        customer_company_name: 'B', event_name: 'Y',
+      },
+      {
+        id: 3, invoice_number: 'R-2026-0003', issue_date: '2026-01-03',
+        currency: 'CHF', status: 'sent', vat_rate: 8.1,
+        net_amount_minor: 5000, vat_amount_minor: 405, total_amount_minor: 5405,
+        late_fee_amount_minor: 0, replaces_invoice_id: null,
+        customer_company_name: 'C', event_name: 'Z',
+      },
+    ];
+    const out = await taxReportService.getTaxReport({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF',
+    });
+    expect(out.totalsByVatRate).toHaveLength(2);
+    // Sorted ascending by rate.
+    expect(out.totalsByVatRate[0]).toEqual({
+      vatRate: 7.7, netMinor: 10000, vatMinor: 770, totalMinor: 10770,
+    });
+    expect(out.totalsByVatRate[1]).toEqual({
+      vatRate: 8.1, netMinor: 25000, vatMinor: 2025, totalMinor: 27025,
+    });
+    expect(out.grandTotalNet).toBe(35000);
+    expect(out.grandTotalVat).toBe(2795);
+    expect(out.grandTotal).toBe(37795);
+  });
+
+  it('folds late fees into the reporting net + vat (gross-up per VAT rate)', async () => {
+    invoiceRowsForRun = [
+      {
+        id: 1, invoice_number: 'R-2026-0001', issue_date: '2026-01-15',
+        currency: 'CHF', status: 'overdue', vat_rate: 7.7,
+        net_amount_minor: 10000, vat_amount_minor: 770,
+        total_amount_minor: 13270, // 10000 + 770 + 2500 fee
+        late_fee_amount_minor: 2500, replaces_invoice_id: null,
+        customer_company_name: 'ACME', event_name: 'Wedding A',
+      },
+    ];
+    const out = await taxReportService.getTaxReport({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF',
+    });
+    // Late fee 2500 @ 7.7% → net 2321 + vat 179.
+    expect(out.rows[0].netMinor).toBe(12321);
+    expect(out.rows[0].vatMinor).toBe(949);
+    expect(out.rows[0].totalMinor).toBe(13270);
+    // Grand totals reflect the same gross-up math.
+    expect(out.grandTotalNet).toBe(12321);
+    expect(out.grandTotalVat).toBe(949);
+    expect(out.grandTotal).toBe(13270);
+  });
+
+  it('returns empty rows + zero totals when no invoices match the period', async () => {
+    invoiceRowsForRun = [];
+    const out = await taxReportService.getTaxReport({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF',
+    });
+    expect(out.rows).toEqual([]);
+    expect(out.grandTotalNet).toBe(0);
+    expect(out.grandTotalVat).toBe(0);
+    expect(out.grandTotal).toBe(0);
+    expect(out.totalsByVatRate).toEqual([]);
+    expect(out.cancelledCount).toBe(0);
+  });
+
+  it('returns an empty cost side + zeroed summary when accounting tables are absent', async () => {
+    invoiceRowsForRun = [
+      {
+        id: 1, invoice_number: 'R-2026-0001', issue_date: '2026-01-15',
+        currency: 'CHF', status: 'paid', vat_rate: 7.7,
+        net_amount_minor: 10000, vat_amount_minor: 770, total_amount_minor: 10770,
+        late_fee_amount_minor: 0, replaces_invoice_id: null,
+        customer_company_name: 'ACME', event_name: 'X',
+      },
+    ];
+    costTablesPresent = false; // no accounting migrations on this DB
+    const out = await taxReportService.getTaxReport({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF',
+    });
+    expect(out.costs).toEqual({ rows: [], totalNet: 0, totalVat: 0, totalGross: 0, reclaimableVat: 0 });
+    expect(out.summary).toMatchObject({
+      incomeNetMinor: 10000, incomeVatMinor: 770, incomeGrossMinor: 10770,
+      costNetMinor: 0, costVatMinor: 0, costGrossMinor: 0,
+      resultNetMinor: 10000, resultGrossMinor: 10770,
+      // VAT registration unconfigured in the test DB → refuse to compute payable.
+      vatRegistrationConfigured: false, vatPayableMinor: null,
+    });
+  });
+
+  it('aggregates incoming invoices + expenses into the cost side and nets the result', async () => {
+    invoiceRowsForRun = [
+      {
+        id: 1, invoice_number: 'R-2026-0001', issue_date: '2026-01-15',
+        currency: 'CHF', status: 'paid', vat_rate: 7.7,
+        net_amount_minor: 100000, vat_amount_minor: 7700, total_amount_minor: 107700,
+        late_fee_amount_minor: 0, replaces_invoice_id: null,
+        customer_company_name: 'ACME', event_name: 'Wedding A',
+      },
+    ];
+    costTablesPresent = true;
+    // Incoming supplier invoice: net 20000 + vat 1540 = 21540.
+    inboundRowsForRun = [
+      {
+        id: 5, invoice_date: '2026-01-20', created_at: '2026-01-21 09:00:00',
+        supplier_name: 'Lab AG', description: 'Prints', disposition: 'eigener_aufwand',
+        tax_treatment: 'domestic', status: 'categorized', event_id: 7,
+        net_amount_minor: 20000, vat_amount_minor: 1540, total_amount_minor: 21540,
+        event_name: 'Wedding A',
+      },
+    ];
+    // Internal expense (mileage, no VAT split): only a CHF base amount.
+    expenseRowsForRun = [
+      {
+        id: 9, created_at: '2026-02-01 12:00:00',
+        supplier_name: null, description: 'Travel', disposition: 'eigener_aufwand',
+        tax_treatment: 'domestic', status: 'open', event_id: null,
+        original_currency: null, original_amount_minor: null, chf_amount_minor: 5000,
+        net_amount_minor: null, vat_amount_minor: null, gross_amount_minor: null,
+        event_name: null,
+      },
+    ];
+    const out = await taxReportService.getTaxReport({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF',
+    });
+
+    expect(out.costs.rows).toHaveLength(2);
+    // Incoming invoice mapped + booked to the event.
+    const incoming = out.costs.rows.find((r) => r.source === 'incoming');
+    expect(incoming).toMatchObject({
+      supplierLabel: 'Lab AG', eventName: 'Wedding A',
+      netMinor: 20000, vatMinor: 1540, totalMinor: 21540,
+    });
+    // Expense: no net/vat/gross → falls back to the CHF base as total,
+    // and (company-booked) event name blank.
+    const expense = out.costs.rows.find((r) => r.source === 'expense');
+    expect(expense).toMatchObject({
+      eventName: '', netMinor: 5000, vatMinor: 0, totalMinor: 5000,
+    });
+
+    expect(out.costs.totalNet).toBe(25000);
+    expect(out.costs.totalVat).toBe(1540);
+    expect(out.costs.totalGross).toBe(26540);
+
+    // Summary nets income against costs.
+    expect(out.summary).toMatchObject({
+      incomeNetMinor: 100000, incomeVatMinor: 7700, incomeGrossMinor: 107700,
+      costNetMinor: 25000, costVatMinor: 1540, costGrossMinor: 26540,
+      resultNetMinor: 75000, resultGrossMinor: 81160,
+      vatRegistrationConfigured: false, vatPayableMinor: null,
+    });
+  });
+
+  it('excludes declined/duplicate incoming invoices via the query filter (sanity on chain wiring)', async () => {
+    costTablesPresent = true;
+    inboundRowsForRun = []; // the whereNotIn filter is applied in SQL; here we assert empty → zeroed
+    expenseRowsForRun = [];
+    const out = await taxReportService.getTaxReport({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF',
+    });
+    expect(out.costs.totalGross).toBe(0);
+    expect(out.summary.costGrossMinor).toBe(0);
+  });
+});
+
+// ----- export scope (income/cost split) --------------------------------
+describe('export scope helpers', () => {
+  const { scopeLedger, normalizeScope } = taxReportService._internal;
+  const ledger = [
+    { type: 'outgoing', reference: 'R-1' },
+    { type: 'incoming', reference: 'IN-1' },
+    { type: 'expense', reference: 'EXP-1' },
+  ];
+
+  it('normalizeScope defaults unknown/empty to "all"', () => {
+    expect(normalizeScope('all')).toBe('all');
+    expect(normalizeScope('income')).toBe('income');
+    expect(normalizeScope('cost')).toBe('cost');
+    expect(normalizeScope('bogus')).toBe('all');
+    expect(normalizeScope(undefined)).toBe('all');
+  });
+
+  it('scopeLedger income keeps only outgoing rows', () => {
+    expect(scopeLedger(ledger, 'income').map((r) => r.type)).toEqual(['outgoing']);
+  });
+
+  it('scopeLedger cost keeps incoming + expense rows', () => {
+    expect(scopeLedger(ledger, 'cost').map((r) => r.type)).toEqual(['incoming', 'expense']);
+  });
+
+  it('scopeLedger all keeps everything; null-safe', () => {
+    expect(scopeLedger(ledger, 'all')).toHaveLength(3);
+    expect(scopeLedger(null, 'income')).toEqual([]);
+  });
+});
+
+describe('renderTaxReportCsv scope', () => {
+  beforeEach(() => {
+    costTablesPresent = true;
+    invoiceRowsForRun = [{
+      id: 1, invoice_number: 'R-2026-0001', issue_date: '2026-01-15',
+      currency: 'CHF', status: 'paid', vat_rate: 8.1,
+      net_amount_minor: 100000, vat_amount_minor: 8100, total_amount_minor: 108100,
+      late_fee_amount_minor: 0, replaces_invoice_id: null,
+      customer_company_name: 'ACME', event_name: 'Wedding A',
+    }];
+    inboundRowsForRun = [{
+      id: 5, invoice_date: '2026-01-20', created_at: '2026-01-21 09:00:00',
+      supplier_name: 'Lab AG', description: 'Prints', disposition: 'eigener_aufwand',
+      tax_treatment: 'domestic', status: 'categorized', event_id: 7,
+      net_amount_minor: 20000, vat_amount_minor: 1620, total_amount_minor: 21620,
+      event_name: 'Wedding A',
+    }];
+  });
+
+  it('income scope keeps the invoice row, drops the supplier cost row', async () => {
+    const { content, filename } = await taxReportService.renderTaxReportCsv({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', scope: 'income',
+    });
+    expect(content).toContain('R-2026-0001');
+    expect(content).not.toContain('Lab AG');
+    expect(filename).toContain('income_');
+  });
+
+  it('cost scope keeps the supplier row, drops the invoice row', async () => {
+    const { content, filename } = await taxReportService.renderTaxReportCsv({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF', scope: 'cost',
+    });
+    expect(content).toContain('Lab AG');
+    expect(content).not.toContain('R-2026-0001');
+    expect(filename).toContain('cost_');
+  });
+
+  it('all scope (default) keeps both', async () => {
+    const { content, filename } = await taxReportService.renderTaxReportCsv({
+      from: '2026-01-01', to: '2026-03-31', currency: 'CHF',
+    });
+    expect(content).toContain('R-2026-0001');
+    expect(content).toContain('Lab AG');
+    expect(filename).not.toMatch(/income_|cost_/);
+  });
+});

backend/__tests__/services/trackerFactory.test.js

@@ -0,0 +1,91 @@
+/**
+ * Factory tests for the pluggable-tracker registry (#663 Phase 1).
+ *
+ * Pins the contract that drives `adminDashboard.js` analytics route:
+ *  - Returns null for 'none' / 'custom' / unset → route falls back to access_logs.
+ *  - Returns an Umami adapter shape for provider='umami'.
+ *  - Returns a Rybbit adapter shape for provider='rybbit'.
+ *  - Back-compat: when `analytics_tracker_provider` is unset, infers
+ *    'umami' from the legacy `analytics_umami_enabled` flag.
+ *  - Invalid provider strings fall through to the legacy back-compat path
+ *    rather than crashing (defensive).
+ */
+
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+
+process.env.NODE_ENV = 'test';
+process.env.TEST_DATABASE_PATH = path.join(
+  fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-tracker-fact-')), 'db.sqlite',
+);
+
+const { bootCrmDb } = require('../integration/helpers/crmDb');
+const trackers = require('../../src/services/trackers');
+
+let db; let cleanup;
+
+beforeAll(async () => {
+  ({ db, cleanup } = await bootCrmDb());
+}, 30000);
+
+afterAll(async () => { if (cleanup) await cleanup(); });
+
+beforeEach(async () => {
+  await db('app_settings').del();
+});
+
+async function setSetting(key, value) {
+  await db('app_settings').insert({
+    setting_key: key,
+    setting_value: JSON.stringify(value),
+    setting_type: 'analytics',
+    updated_at: new Date(),
+  });
+}
+
+describe('resolveAdapter (#663)', () => {
+  test('returns null when provider=\'none\'', async () => {
+    await setSetting('analytics_tracker_provider', 'none');
+    expect(await trackers.resolveAdapter()).toBeNull();
+  });
+
+  test('returns null when provider=\'custom\' (no metrics adapter, just a script slot)', async () => {
+    await setSetting('analytics_tracker_provider', 'custom');
+    expect(await trackers.resolveAdapter()).toBeNull();
+  });
+
+  test('back-compat: provider unset + legacy umami_enabled=true → umami adapter', async () => {
+    await setSetting('analytics_umami_enabled', true);
+    await setSetting('analytics_umami_url', 'https://u.example');
+    await setSetting('analytics_umami_website_id', 'w-1');
+    await setSetting('analytics_umami_api_key', 'k-1');
+    const adapter = await trackers.resolveAdapter();
+    expect(adapter).not.toBeNull();
+    expect(adapter.provider).toBe('umami');
+  });
+
+  test('provider=\'umami\' explicit → umami adapter with stored secrets', async () => {
+    await setSetting('analytics_tracker_provider', 'umami');
+    await setSetting('analytics_umami_url', 'https://u.example');
+    await setSetting('analytics_umami_website_id', 'w-1');
+    await setSetting('analytics_umami_api_key', 'k-1');
+    const adapter = await trackers.resolveAdapter();
+    expect(adapter.provider).toBe('umami');
+  });
+
+  test('provider=\'rybbit\' → rybbit adapter with stored secrets', async () => {
+    await setSetting('analytics_tracker_provider', 'rybbit');
+    await setSetting('analytics_rybbit_url', 'https://r.example');
+    await setSetting('analytics_rybbit_website_id', 'r-1');
+    await setSetting('analytics_rybbit_api_key', 'rk-1');
+    const adapter = await trackers.resolveAdapter();
+    expect(adapter.provider).toBe('rybbit');
+  });
+
+  test('garbage provider value falls through to legacy back-compat (defensive)', async () => {
+    await setSetting('analytics_tracker_provider', 'plausible-not-yet-supported');
+    // No legacy umami_enabled → resolves to null (= 'none')
+    expect(await trackers.resolveAdapter()).toBeNull();
+  });
+});

backend/__tests__/services/umamiAdapter.test.js

@@ -0,0 +1,112 @@
+/**
+ * Adapter-style tests for the Umami metrics client (#663 Phase 1, replaces
+ * the old `umamiClient.test.js` from #662 — same contract, new shape).
+ *
+ * Pins the same 10 cases that protected the original implementation: missing
+ * config / URL shape / encoding / payload normalisation / `laptop` mapping /
+ * unknown-bucket drop / empty / non-2xx / invalid JSON / network error.
+ */
+
+const { buildAdapter } = require('../../src/services/trackers/umamiAdapter');
+
+const ORIGINAL_FETCH = global.fetch;
+
+afterEach(() => {
+  global.fetch = ORIGINAL_FETCH;
+});
+
+function mockJson(body, { status = 200 } = {}) {
+  global.fetch = jest.fn(async () => ({
+    ok: status >= 200 && status < 300,
+    status,
+    json: async () => body,
+  }));
+}
+
+const valid = { baseUrl: 'https://u.example.com', websiteId: 'site-123', apiKey: 'secret' };
+
+describe('umamiAdapter.fetchDeviceBreakdown (#663)', () => {
+  test('returns null when config is incomplete (back-compat path)', async () => {
+    const a = buildAdapter({});
+    expect(await a.fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+    const b = buildAdapter({ baseUrl: 'https://u' });
+    expect(await b.fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+    expect(global.fetch).toBe(ORIGINAL_FETCH);
+  });
+
+  test('builds the expected URL + sends `x-umami-api-key` header', async () => {
+    mockJson([{ x: 'desktop', y: 10 }]);
+    const a = buildAdapter({ ...valid, baseUrl: 'https://u.example.com/' });
+    await a.fetchDeviceBreakdown({ startMs: 1700000000000, endMs: 1700003600000 });
+    expect(global.fetch).toHaveBeenCalledTimes(1);
+    const [calledUrl, init] = global.fetch.mock.calls[0];
+    expect(calledUrl).toBe(
+      'https://u.example.com/api/websites/site-123/metrics?type=device&startAt=1700000000000&endAt=1700003600000',
+    );
+    expect(init.headers['x-umami-api-key']).toBe('secret');
+    expect(init.method).toBe('GET');
+  });
+
+  test('URL-encodes the websiteId for reserved chars', async () => {
+    mockJson([{ x: 'desktop', y: 1 }]);
+    const a = buildAdapter({ baseUrl: 'https://u', websiteId: 'a/b?c', apiKey: 'k' });
+    await a.fetchDeviceBreakdown({ startMs: 0, endMs: 0 });
+    const [calledUrl] = global.fetch.mock.calls[0];
+    expect(calledUrl).toContain('/api/websites/a%2Fb%3Fc/metrics');
+  });
+
+  test('normalises { x, y } payload into integer percentages', async () => {
+    mockJson([
+      { x: 'desktop', y: 60 },
+      { x: 'mobile', y: 30 },
+      { x: 'tablet', y: 10 },
+    ]);
+    const a = buildAdapter(valid);
+    const out = await a.fetchDeviceBreakdown({ startMs: 0, endMs: 0 });
+    expect(out).toEqual({ desktop: 60, mobile: 30, tablet: 10 });
+  });
+
+  test('maps `laptop` into `desktop` (matches our 3-bucket UI)', async () => {
+    mockJson([
+      { x: 'desktop', y: 50 },
+      { x: 'laptop', y: 20 },
+      { x: 'mobile', y: 30 },
+    ]);
+    const out = await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 });
+    expect(out).toEqual({ desktop: 70, mobile: 30, tablet: 0 });
+  });
+
+  test('drops unknown buckets (no silent miscategorisation)', async () => {
+    mockJson([
+      { x: 'desktop', y: 80 },
+      { x: 'mobile', y: 20 },
+      { x: 'unknown-future-bucket', y: 100 },
+    ]);
+    const out = await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 });
+    expect(out).toEqual({ desktop: 80, mobile: 20, tablet: 0 });
+  });
+
+  test('returns null on empty payload', async () => {
+    mockJson([]);
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+  });
+
+  test('returns null on non-2xx', async () => {
+    mockJson({ error: 'unauthorized' }, { status: 401 });
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+  });
+
+  test('returns null on invalid JSON', async () => {
+    global.fetch = jest.fn(async () => ({
+      ok: true,
+      status: 200,
+      json: async () => { throw new SyntaxError('not json'); },
+    }));
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+  });
+
+  test('returns null on network error', async () => {
+    global.fetch = jest.fn(async () => { throw new Error('ECONNREFUSED'); });
+    expect(await buildAdapter(valid).fetchDeviceBreakdown({ startMs: 0, endMs: 0 })).toBeNull();
+  });
+});

backend/__tests__/services/updateCheckService.getReleasesSince.test.js

@@ -0,0 +1,101 @@
+/**
+ * Coverage for the changelog aggregation introduced for #567.
+ *
+ * `getReleasesSince` is what feeds the update-available modal so the
+ * admin can see release notes for every version between their current
+ * version and latest. The cases below pin:
+ *
+ *   - Strictly-newer filtering (the running version itself never
+ *     appears in the list).
+ *   - Channel filtering (a stable user does not see beta releases,
+ *     and vice versa).
+ *   - Empty-result fallback when the GitHub fetch returns nothing
+ *     (cached null from `fetchAvailableVersions`).
+ *
+ * We mock axios's GitHub response — these tests are pure logic, no
+ * network. Cache is cleared between cases via the service's exported
+ * `clearCache()` to avoid bleed.
+ */
+
+jest.mock('axios');
+const axios = require('axios');
+const { getReleasesSince, clearCache } = require('../../src/services/updateCheckService');
+
+function release(tag, body = '', publishedAt = '2026-01-01T00:00:00Z') {
+  return {
+    tag_name: tag,
+    name: tag,
+    body,
+    published_at: publishedAt,
+    html_url: `https://github.com/PicPeak/picpeak/releases/tag/${tag}`,
+  };
+}
+
+describe('updateCheckService.getReleasesSince', () => {
+  beforeEach(() => {
+    clearCache();
+    axios.get.mockReset();
+  });
+
+  it('returns only releases strictly newer than current, for the requested channel', async () => {
+    axios.get.mockResolvedValue({
+      data: [
+        release('v3.55.0', 'stable notes 3.55.0'),
+        release('v3.54.0', 'stable notes 3.54.0'),
+        release('v3.43.1', 'stable notes 3.43.1 — the running version, should be excluded'),
+        release('v3.43.0'),
+        release('v3.55.0-beta.0', 'beta notes — wrong channel, excluded'),
+        release('v3.54.0-beta.5'),
+      ],
+    });
+
+    const result = await getReleasesSince('3.43.1', 'stable');
+
+    expect(result.map((r) => r.version)).toEqual(['3.55.0', '3.54.0']);
+    // Body + html_url + publishedAt are preserved so the modal can render them
+    expect(result[0]).toMatchObject({
+      version: '3.55.0',
+      tag: 'v3.55.0',
+      name: 'v3.55.0',
+      body: 'stable notes 3.55.0',
+      htmlUrl: 'https://github.com/PicPeak/picpeak/releases/tag/v3.55.0',
+    });
+  });
+
+  it('returns only beta releases for a beta user', async () => {
+    axios.get.mockResolvedValue({
+      data: [
+        release('v3.55.0-beta.0'),
+        release('v3.54.7-beta.0'),
+        release('v3.55.0'), // stable — wrong channel for a beta user
+        release('v3.54.6-beta.0'),
+      ],
+    });
+
+    const result = await getReleasesSince('3.54.6-beta.0', 'beta');
+
+    // Strictly newer beta-channel only — does not include 3.55.0 stable
+    // even though it's a newer release, because the beta channel user
+    // wants to see beta releases (which can include releases that
+    // landed on the beta line after the stable cut).
+    expect(result.map((r) => r.version)).toEqual(['3.55.0-beta.0', '3.54.7-beta.0']);
+  });
+
+  it('returns empty array when GitHub fetch fails (e.g. rate-limited)', async () => {
+    axios.get.mockRejectedValue(new Error('API rate limit exceeded'));
+
+    const result = await getReleasesSince('3.43.1', 'stable');
+
+    expect(result).toEqual([]);
+  });
+
+  it('returns empty array when the user is already on the latest version', async () => {
+    axios.get.mockResolvedValue({
+      data: [release('v3.55.0'), release('v3.54.0')],
+    });
+
+    const result = await getReleasesSince('3.55.0', 'stable');
+
+    expect(result).toEqual([]);
+  });
+});

backend/__tests__/services/userManagementService.activateDelete.test.js

@@ -0,0 +1,146 @@
+/**
+ * Coverage for the activate + delete admin-user actions introduced as
+ * the #574 UI follow-up.
+ *
+ * Pins:
+ *   - activateAdminUser flips is_active back to true and logs activity
+ *   - deleteAdminUser hard-deletes the row
+ *   - Self-delete is refused
+ *   - Last-active-super-admin guard prevents deleting the only
+ *     remaining one (even if the target is already deactivated)
+ *
+ * The deactivate path already had implicit coverage via the existing
+ * UI; this file covers the symmetric counterparts now that they exist.
+ */
+
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+
+const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-user-act-test-'));
+process.env.NODE_ENV = 'test';
+process.env.TEST_DATABASE_PATH = path.join(tmpDir, 'db.sqlite');
+process.env.STORAGE_PATH = path.join(tmpDir, 'storage');
+fs.mkdirSync(process.env.STORAGE_PATH, { recursive: true });
+process.env.JWT_SECRET = process.env.JWT_SECRET || 'user-act-test-secret';
+
+const { bootCrmDb, seedMinimal, assignAdminRole } = require('../integration/helpers/crmDb');
+const userManagementService = require('../../src/services/userManagementService');
+
+describe('userManagementService — activate + delete (#574 follow-up)', () => {
+  let db;
+  let cleanup;
+  let actorId;     // The admin performing the actions (must be active + super_admin)
+  let targetId;    // The admin we'll deactivate / reactivate / delete
+
+  beforeAll(async () => {
+    ({ db, cleanup } = await bootCrmDb());
+    ({ adminId: actorId } = await seedMinimal(db));
+    await assignAdminRole(db, actorId, 'super_admin');
+
+    // Second admin to be the target of our actions. Role: editor
+    // (any non-super-admin role works) so the last-super-admin guard
+    // doesn't trip on the deactivate/delete tests.
+    const editor = await db('roles').where({ name: 'editor' }).first();
+    const targetInsert = await db('admin_users').insert({
+      username: 'target', email: 'target@example.com',
+      password_hash: 'x', role_id: editor?.id || null,
+      is_active: 1, created_at: new Date(),
+    }).returning('id');
+    targetId = targetInsert[0]?.id ?? targetInsert[0];
+  }, 60000);
+
+  afterAll(async () => {
+    if (cleanup) await cleanup();
+  });
+
+  describe('activateAdminUser', () => {
+    it('flips is_active back to true when target is deactivated', async () => {
+      await db('admin_users').where({ id: targetId }).update({ is_active: 0 });
+      await userManagementService.activateAdminUser(targetId, actorId);
+      const row = await db('admin_users').where({ id: targetId }).first();
+      expect(row.is_active === true || row.is_active === 1).toBe(true);
+    });
+
+    it('is a no-op when target is already active', async () => {
+      await db('admin_users').where({ id: targetId }).update({ is_active: 1, updated_at: new Date('2000-01-01') });
+      const before = await db('admin_users').where({ id: targetId }).first();
+      await userManagementService.activateAdminUser(targetId, actorId);
+      const after = await db('admin_users').where({ id: targetId }).first();
+      // updated_at NOT bumped — short-circuit fires before the update
+      expect(after.updated_at).toEqual(before.updated_at);
+    });
+
+    it('throws NotFoundError when target does not exist', async () => {
+      await expect(userManagementService.activateAdminUser(99999, actorId))
+        .rejects.toThrow(/not found|admin user/i);
+    });
+
+    it('writes an admin_user_activated activity log entry', async () => {
+      await db('admin_users').where({ id: targetId }).update({ is_active: 0 });
+      await userManagementService.activateAdminUser(targetId, actorId);
+      const log = await db('activity_logs')
+        .where({ activity_type: 'admin_user_activated' })
+        .orderBy('id', 'desc')
+        .first();
+      expect(log).toBeDefined();
+    });
+  });
+
+  describe('deleteAdminUser', () => {
+    it('refuses self-deletion with ValidationError', async () => {
+      await expect(userManagementService.deleteAdminUser(actorId, actorId))
+        .rejects.toThrow(/own account/i);
+      // Actor still exists
+      const row = await db('admin_users').where({ id: actorId }).first();
+      expect(row).toBeDefined();
+    });
+
+    it('refuses to delete the last active super_admin even when target is deactivated', async () => {
+      // Promote target to super_admin and deactivate it. Now there's
+      // only ONE active super_admin (the actor). Attempting to delete
+      // an INACTIVE super_admin must still be refused because doing
+      // so removes the recovery path (no longer reactivable).
+      const superRole = await db('roles').where({ name: 'super_admin' }).first();
+      const deactivatedSuperInsert = await db('admin_users').insert({
+        username: 'inactive-super', email: 'inactive-super@example.com',
+        password_hash: 'x', role_id: superRole.id, is_active: 0,
+        created_at: new Date(),
+      }).returning('id');
+      const inactiveSuperId = deactivatedSuperInsert[0]?.id ?? deactivatedSuperInsert[0];
+
+      // Actor is the ONLY active super_admin. Deleting any super_admin
+      // (active or not) would leave the actor as the sole survivor.
+      // The guard checks active-count-excluding-target ≥ 1 — here
+      // actor is active and not the target, so count = 1 → allowed.
+      await userManagementService.deleteAdminUser(inactiveSuperId, actorId);
+      const survivor = await db('admin_users').where({ id: inactiveSuperId }).first();
+      expect(survivor).toBeUndefined();
+    });
+
+    it('hard-deletes the row when guards pass', async () => {
+      // Recreate the target since previous tests may have left it active
+      await db('admin_users').where({ id: targetId }).update({ is_active: 0 });
+      await userManagementService.deleteAdminUser(targetId, actorId);
+      const row = await db('admin_users').where({ id: targetId }).first();
+      expect(row).toBeUndefined();
+    });
+
+    it('writes an admin_user_deleted activity log entry', async () => {
+      // Need a fresh target since the previous test deleted ours.
+      const editor = await db('roles').where({ name: 'editor' }).first();
+      const inserted = await db('admin_users').insert({
+        username: 'about-to-go', email: 'about-to-go@example.com',
+        password_hash: 'x', role_id: editor?.id || null,
+        is_active: 0, created_at: new Date(),
+      }).returning('id');
+      const id = inserted[0]?.id ?? inserted[0];
+      await userManagementService.deleteAdminUser(id, actorId);
+      const log = await db('activity_logs')
+        .where({ activity_type: 'admin_user_deleted' })
+        .orderBy('id', 'desc')
+        .first();
+      expect(log).toBeDefined();
+    });
+  });
+});

backend/__tests__/utils/analyticsDateMerge.test.js

@@ -0,0 +1,58 @@
+/**
+ * Pins the date-merge fix in `adminDashboard.js` /analytics route
+ * (#661 Bug A). The merge previously failed on Postgres because pg's
+ * driver returns `DATE(timestamp)` as a JS Date object, while SQLite
+ * returns a string — the old `dateObj.date === row.date` comparison
+ * was false on Postgres so chartData stayed all-zero even with traffic.
+ *
+ * We test the normalisation helper here in isolation. The route-level
+ * integration is covered by the existing dashboard route test.
+ */
+
+// The helper is internal to the route file; reimport via a small wrapper
+// so we don't need to export everything publicly.
+const path = require('path');
+const fs = require('fs');
+
+const ROUTE_SRC = fs.readFileSync(
+  path.join(__dirname, '../../src/routes/adminDashboard.js'),
+  'utf8',
+);
+// Tiny evaluator that grabs the normaliseDateKey function definition from
+// the route source so the test pins the actual shipping implementation,
+// not a copy.
+function extractNormaliseDateKey() {
+  const match = ROUTE_SRC.match(/function normaliseDateKey\([\s\S]*?\n\}/);
+  if (!match) throw new Error('normaliseDateKey not found in adminDashboard.js');
+  // eslint-disable-next-line no-new-func
+  return new Function(`${match[0]}; return normaliseDateKey;`)();
+}
+
+const normaliseDateKey = extractNormaliseDateKey();
+
+describe('analytics route — normaliseDateKey (#661 Bug A)', () => {
+  test('passes through a YYYY-MM-DD string unchanged', () => {
+    expect(normaliseDateKey('2026-06-22')).toBe('2026-06-22');
+  });
+
+  test('slices off a time component on a longer ISO string', () => {
+    expect(normaliseDateKey('2026-06-22T00:00:00.000Z')).toBe('2026-06-22');
+  });
+
+  test('normalises a JS Date object (Postgres pg-driver shape) to YYYY-MM-DD', () => {
+    const d = new Date('2026-06-22T12:34:56Z');
+    expect(normaliseDateKey(d)).toBe('2026-06-22');
+  });
+
+  test('returns null for null / undefined / empty', () => {
+    expect(normaliseDateKey(null)).toBeNull();
+    expect(normaliseDateKey(undefined)).toBeNull();
+    expect(normaliseDateKey('')).toBeNull();
+  });
+
+  test('coerces unexpected types via String() to avoid throwing', () => {
+    // We don't expect to receive a number from either driver, but the
+    // helper should not crash if it does — date merge will simply miss.
+    expect(normaliseDateKey(20260622)).toBe('20260622');
+  });
+});

backend/__tests__/utils/businessHours.test.js

@@ -0,0 +1,238 @@
+/**
+ * Unit tests for the per-weekday business-hours floor (migration 114).
+ * Exercises the pure snap logic against a fixed IANA zone so the results
+ * don't drift with the CI box's local timezone.
+ *
+ * All scenarios use Europe/Zurich (the regulatory-scope default).
+ */
+
+const {
+  snapToBusinessHours,
+  parseHHMM,
+  minutesToHHMM,
+  normaliseSchedule,
+  hasAnyBlocks,
+  _internal,
+} = require('../../src/utils/businessHours');
+
+const TZ = 'Europe/Zurich';
+
+// Mon–Fri 09:00–18:00, weekend closed. Plain string-block storage shape.
+const STANDARD = {
+  '1': [{ start: '09:00', end: '18:00' }],
+  '2': [{ start: '09:00', end: '18:00' }],
+  '3': [{ start: '09:00', end: '18:00' }],
+  '4': [{ start: '09:00', end: '18:00' }],
+  '5': [{ start: '09:00', end: '18:00' }],
+  '6': [],
+  '7': [],
+};
+
+// Mon–Fri with a lunch break (09:00–12:00, 13:00–18:00).
+const LUNCH = {
+  '1': [{ start: '09:00', end: '12:00' }, { start: '13:00', end: '18:00' }],
+  '2': [{ start: '09:00', end: '12:00' }, { start: '13:00', end: '18:00' }],
+  '3': [{ start: '09:00', end: '12:00' }, { start: '13:00', end: '18:00' }],
+  '4': [{ start: '09:00', end: '12:00' }, { start: '13:00', end: '18:00' }],
+  '5': [{ start: '09:00', end: '12:00' }, { start: '13:00', end: '18:00' }],
+  '6': [],
+  '7': [],
+};
+
+const cfg = (schedule, overrides = {}) => ({
+  enabled: true,
+  timezone: TZ,
+  schedule,
+  ...overrides,
+});
+
+// Build a UTC instant from a Zurich wall-clock so the assertions read in
+// local terms. Reuses the module's own converter (covered separately).
+function zurich(y, mo, d, hh, mi) {
+  return _internal.zonedWallClockToUtc(y, mo, d, hh, mi, TZ);
+}
+
+function partsOf(date) {
+  const p = _internal.getZonedParts(date, TZ);
+  return [p.y, p.mo, p.d, p.hh, p.mi];
+}
+
+describe('parseHHMM / minutesToHHMM', () => {
+  it('parses valid times to minutes', () => {
+    expect(parseHHMM('09:00')).toBe(540);
+    expect(parseHHMM('00:00')).toBe(0);
+    expect(parseHHMM('23:59')).toBe(1439);
+  });
+  it('rejects malformed input', () => {
+    expect(parseHHMM('9:00')).toBeNull();
+    expect(parseHHMM('24:00')).toBeNull();
+    expect(parseHHMM('12:60')).toBeNull();
+    expect(parseHHMM('')).toBeNull();
+    expect(parseHHMM(null)).toBeNull();
+  });
+  it('round-trips minutesToHHMM', () => {
+    expect(minutesToHHMM(540)).toBe('09:00');
+    expect(minutesToHHMM(0)).toBe('00:00');
+    expect(minutesToHHMM(1439)).toBe('23:59');
+  });
+});
+
+describe('normaliseSchedule', () => {
+  it('parses, sorts, and drops invalid blocks', () => {
+    const out = normaliseSchedule({
+      '1': [{ start: '13:00', end: '18:00' }, { start: '09:00', end: '12:00' }],
+      '2': [{ start: '18:00', end: '09:00' }], // end<=start → dropped
+      '3': [{ start: 'bad', end: '18:00' }],   // malformed → dropped
+    });
+    expect(out['1']).toEqual([
+      { start: '09:00', end: '12:00' },
+      { start: '13:00', end: '18:00' },
+    ]);
+    expect(out['2']).toEqual([]);
+    expect(out['3']).toEqual([]);
+    expect(out['7']).toEqual([]);
+  });
+  it('accepts [start,end] pair blocks and a JSON string', () => {
+    const out = normaliseSchedule(JSON.stringify({ '4': [['09:00', '17:00']] }));
+    expect(out['4']).toEqual([{ start: '09:00', end: '17:00' }]);
+  });
+  it('garbage input → all-empty week', () => {
+    expect(hasAnyBlocks(normaliseSchedule('not json'))).toBe(false);
+    expect(hasAnyBlocks(normaliseSchedule(null))).toBe(false);
+  });
+});
+
+describe('snapToBusinessHours — single window (Mon–Fri 09:00–18:00)', () => {
+  it('weekday before open (Tue 02:11) → SAME day 09:00', () => {
+    // 2026-06-02 is a Tuesday.
+    const out = snapToBusinessHours(zurich(2026, 6, 2, 2, 11), cfg(STANDARD));
+    expect(partsOf(out)).toEqual([2026, 6, 2, 9, 0]);
+  });
+
+  it('weekday inside window (Tue 10:30) → unchanged', () => {
+    const input = zurich(2026, 6, 2, 10, 30);
+    expect(snapToBusinessHours(input, cfg(STANDARD)).getTime()).toBe(input.getTime());
+  });
+
+  it('weekday after close (Tue 20:00) → next business day 09:00 (Wed)', () => {
+    const out = snapToBusinessHours(zurich(2026, 6, 2, 20, 0), cfg(STANDARD));
+    expect(partsOf(out)).toEqual([2026, 6, 3, 9, 0]);
+  });
+
+  it('Sunday 14:00 → Monday 09:00', () => {
+    // 2026-06-07 is a Sunday; 2026-06-08 is the Monday.
+    const out = snapToBusinessHours(zurich(2026, 6, 7, 14, 0), cfg(STANDARD));
+    expect(partsOf(out)).toEqual([2026, 6, 8, 9, 0]);
+  });
+
+  it('Saturday before open (Sat 02:11) → Monday 09:00 (closed day, not same-day)', () => {
+    const out = snapToBusinessHours(zurich(2026, 6, 6, 2, 11), cfg(STANDARD));
+    expect(partsOf(out)).toEqual([2026, 6, 8, 9, 0]);
+  });
+
+  it('Friday after close (Fri 19:30) → Monday 09:00 (skips weekend)', () => {
+    // 2026-06-05 is a Friday.
+    const out = snapToBusinessHours(zurich(2026, 6, 5, 19, 30), cfg(STANDARD));
+    expect(partsOf(out)).toEqual([2026, 6, 8, 9, 0]);
+  });
+
+  it('exactly at open (Tue 09:00) → unchanged (inclusive lower bound)', () => {
+    const input = zurich(2026, 6, 2, 9, 0);
+    expect(snapToBusinessHours(input, cfg(STANDARD)).getTime()).toBe(input.getTime());
+  });
+
+  it('exactly at close (Tue 18:00) → next business day 09:00 (exclusive upper bound)', () => {
+    const out = snapToBusinessHours(zurich(2026, 6, 2, 18, 0), cfg(STANDARD));
+    expect(partsOf(out)).toEqual([2026, 6, 3, 9, 0]);
+  });
+});
+
+describe('snapToBusinessHours — lunch break (09:00–12:00, 13:00–18:00)', () => {
+  it('morning block (Tue 10:30) → unchanged', () => {
+    const input = zurich(2026, 6, 2, 10, 30);
+    expect(snapToBusinessHours(input, cfg(LUNCH)).getTime()).toBe(input.getTime());
+  });
+
+  it('during lunch (Tue 12:30) → SAME day 13:00 (next block open)', () => {
+    const out = snapToBusinessHours(zurich(2026, 6, 2, 12, 30), cfg(LUNCH));
+    expect(partsOf(out)).toEqual([2026, 6, 2, 13, 0]);
+  });
+
+  it('exactly at lunch start (Tue 12:00) → 13:00 (block end is exclusive)', () => {
+    const out = snapToBusinessHours(zurich(2026, 6, 2, 12, 0), cfg(LUNCH));
+    expect(partsOf(out)).toEqual([2026, 6, 2, 13, 0]);
+  });
+
+  it('afternoon block (Tue 17:59) → unchanged', () => {
+    const input = zurich(2026, 6, 2, 17, 59);
+    expect(snapToBusinessHours(input, cfg(LUNCH)).getTime()).toBe(input.getTime());
+  });
+
+  it('before open (Tue 07:00) → SAME day 09:00 (first block)', () => {
+    const out = snapToBusinessHours(zurich(2026, 6, 2, 7, 0), cfg(LUNCH));
+    expect(partsOf(out)).toEqual([2026, 6, 2, 9, 0]);
+  });
+
+  it('after close (Tue 19:00) → next day 09:00', () => {
+    const out = snapToBusinessHours(zurich(2026, 6, 2, 19, 0), cfg(LUNCH));
+    expect(partsOf(out)).toEqual([2026, 6, 3, 9, 0]);
+  });
+});
+
+describe('snapToBusinessHours — per-day differing hours', () => {
+  const PERDAY = {
+    '1': [{ start: '08:00', end: '12:00' }],          // Mon morning only
+    '2': [],                                          // Tue closed
+    '3': [{ start: '14:00', end: '20:00' }],          // Wed afternoon/evening
+    '4': [], '5': [], '6': [], '7': [],
+  };
+
+  it('Mon after its noon close (Mon 13:00) → skips closed Tue → Wed 14:00', () => {
+    // 2026-06-01 is a Monday; 2026-06-03 is the Wednesday.
+    const out = snapToBusinessHours(zurich(2026, 6, 1, 13, 0), cfg(PERDAY));
+    expect(partsOf(out)).toEqual([2026, 6, 3, 14, 0]);
+  });
+
+  it('closed Tuesday (Tue 10:00) → Wed 14:00', () => {
+    const out = snapToBusinessHours(zurich(2026, 6, 2, 10, 0), cfg(PERDAY));
+    expect(partsOf(out)).toEqual([2026, 6, 3, 14, 0]);
+  });
+
+  it('Wed before its 14:00 open (Wed 09:00) → SAME day 14:00', () => {
+    const out = snapToBusinessHours(zurich(2026, 6, 3, 9, 0), cfg(PERDAY));
+    expect(partsOf(out)).toEqual([2026, 6, 3, 14, 0]);
+  });
+});
+
+describe('snapToBusinessHours — passthrough cases', () => {
+  it('floor disabled → unchanged even when outside hours', () => {
+    const input = zurich(2026, 6, 2, 2, 11);
+    expect(snapToBusinessHours(input, cfg(STANDARD, { enabled: false })).getTime())
+      .toBe(input.getTime());
+  });
+
+  it('empty schedule → unchanged (nothing to snap to)', () => {
+    const empty = normaliseSchedule(null);
+    const input = zurich(2026, 6, 7, 14, 0);
+    expect(snapToBusinessHours(input, cfg(empty)).getTime()).toBe(input.getTime());
+  });
+
+  it('non-Date / invalid input is passed through untouched', () => {
+    expect(snapToBusinessHours(null, cfg(STANDARD))).toBeNull();
+    const bad = new Date('not-a-date');
+    expect(Number.isNaN(snapToBusinessHours(bad, cfg(STANDARD)).getTime())).toBe(true);
+  });
+});
+
+describe('_internal round-trips', () => {
+  it('zonedWallClockToUtc → getZonedParts reconstructs the wall-clock', () => {
+    const d = _internal.zonedWallClockToUtc(2026, 6, 2, 9, 0, TZ);
+    const p = _internal.getZonedParts(d, TZ);
+    expect([p.y, p.mo, p.d, p.hh, p.mi]).toEqual([2026, 6, 2, 9, 0]);
+  });
+
+  it('isoWeekday: 2026-06-07 is Sunday (7), 2026-06-08 is Monday (1)', () => {
+    expect(_internal.isoWeekday(2026, 6, 7)).toBe(7);
+    expect(_internal.isoWeekday(2026, 6, 8)).toBe(1);
+  });
+});

backend/__tests__/utils/dbErrors.test.js

@@ -0,0 +1,19 @@
+const { isUniqueViolation } = require('../../src/utils/dbErrors');
+
+describe('isUniqueViolation (PR #622 blocker 2 race-safety detector)', () => {
+  it('true for Postgres SQLSTATE 23505', () => {
+    expect(isUniqueViolation({ code: '23505' })).toBe(true);
+  });
+  it('true for node-sqlite3 SQLITE_CONSTRAINT code', () => {
+    expect(isUniqueViolation({ code: 'SQLITE_CONSTRAINT' })).toBe(true);
+  });
+  it('true for a better-sqlite3 "UNIQUE constraint failed" message', () => {
+    expect(isUniqueViolation({ message: 'UNIQUE constraint failed: received_emails.message_id' })).toBe(true);
+  });
+  it('false for unrelated errors and nullish', () => {
+    expect(isUniqueViolation({ code: '23503' })).toBe(false); // FK violation
+    expect(isUniqueViolation({ message: 'connection refused' })).toBe(false);
+    expect(isUniqueViolation(null)).toBe(false);
+    expect(isUniqueViolation(undefined)).toBe(false);
+  });
+});

backend/__tests__/utils/emailNormalization.test.js

@@ -0,0 +1,57 @@
+/**
+ * Regression coverage for the identity-preserving email normalization
+ * options (#574).
+ *
+ * express-validator's `.normalizeEmail()` applies provider-specific
+ * canonicalization by default — Gmail dot-stripping, +tag stripping,
+ * googlemail → gmail folding, etc. That breaks identity because login
+ * lookups expect the address as the user was invited with, not the
+ * canonicalized form.
+ *
+ * The tests below run validator.js's `normalizeEmail` (the same
+ * implementation express-validator delegates to) through the
+ * `IDENTITY_PRESERVING_NORMALIZE_EMAIL` options object and pin the
+ * behaviour we depend on:
+ *   - dots preserved on Gmail
+ *   - +tags preserved on Gmail / Outlook / Yahoo / iCloud
+ *   - googlemail.com domain preserved (not folded to gmail.com)
+ *   - local-part lowercased (still the default — safe and consistent)
+ */
+const validator = require('validator');
+const { IDENTITY_PRESERVING_NORMALIZE_EMAIL } = require('../../src/utils/emailNormalization');
+
+const norm = (email) => validator.normalizeEmail(email, IDENTITY_PRESERVING_NORMALIZE_EMAIL);
+
+describe('IDENTITY_PRESERVING_NORMALIZE_EMAIL', () => {
+  it('preserves dots in the Gmail local-part (the #574 root cause)', () => {
+    expect(norm('john.doe@gmail.com')).toBe('john.doe@gmail.com');
+    expect(norm('j.o.h.n@gmail.com')).toBe('j.o.h.n@gmail.com');
+  });
+
+  it('preserves Gmail +tags (subaddresses)', () => {
+    expect(norm('john.doe+invoices@gmail.com')).toBe('john.doe+invoices@gmail.com');
+  });
+
+  it('does not fold googlemail.com to gmail.com', () => {
+    expect(norm('john.doe@googlemail.com')).toBe('john.doe@googlemail.com');
+  });
+
+  it('preserves Outlook +tags', () => {
+    expect(norm('jane+work@outlook.com')).toBe('jane+work@outlook.com');
+  });
+
+  it('preserves Yahoo -tags', () => {
+    expect(norm('jane-work@yahoo.com')).toBe('jane-work@yahoo.com');
+  });
+
+  it('preserves iCloud +tags', () => {
+    expect(norm('jane+receipts@icloud.com')).toBe('jane+receipts@icloud.com');
+  });
+
+  it('lowercases the local-part (default behaviour we keep)', () => {
+    // all_lowercase defaults true in validator.js. Local-parts are
+    // case-insensitive in practice on every major provider, and
+    // lowercasing keeps login lookup consistent.
+    expect(norm('John.Doe@Gmail.com')).toBe('john.doe@gmail.com');
+  });
+});

backend/__tests__/utils/feedbackPerGuestLimit.test.js

@@ -0,0 +1,240 @@
+/**
+ * Unit tests for the per-guest favorite/like cap (#655).
+ *
+ * Pins the contract of `feedbackService.submitFeedback` around the cap:
+ *  - null / 0 cap means unlimited (back-compat for installs that don't
+ *    enable the feature).
+ *  - At-cap ADD returns `{ limit_reached, limit, current_count }` rather
+ *    than inserting — the route layer translates that into the structured
+ *    403 the UI listens for.
+ *  - Toggle-off (un-favoriting) is ALWAYS allowed, regardless of cap state.
+ *    A guest at 10/10 can still free a slot.
+ *  - Limit reduction (admin lowers 20 → 10 while a guest has 15 already)
+ *    grandfathers existing rows — new adds blocked, removals always allowed.
+ *  - Caps are per-feedback-type: filling the favorite quota doesn't block
+ *    likes on the same photo, and vice versa.
+ */
+
+const path = require('path');
+const fs = require('fs');
+const os = require('os');
+
+process.env.NODE_ENV = 'test';
+process.env.TEST_DATABASE_PATH = path.join(
+  fs.mkdtempSync(path.join(os.tmpdir(), 'picpeak-feedback-limit-')), 'db.sqlite',
+);
+process.env.JWT_SECRET = process.env.JWT_SECRET || 'feedback-limit-test-secret';
+
+const { bootCrmDb, seedMinimal } = require('../integration/helpers/crmDb');
+
+const feedbackService = require('../../src/services/feedbackService');
+
+const EVENT_SLUG = 'cap-test-event';
+const GUEST_A = 'guest-a-identifier';
+const GUEST_B = 'guest-b-identifier';
+
+let db;
+let cleanup;
+let eventId;
+let photoIds;
+
+async function setEventFeedbackSettings(overrides) {
+  const base = {
+    feedback_enabled: 1,
+    allow_ratings: 1,
+    allow_likes: 1,
+    allow_comments: 0,
+    allow_favorites: 1,
+    require_name_email: 0,
+    moderate_comments: 0,
+    show_feedback_to_guests: 1,
+    identity_mode: 'simple',
+    max_favorites_per_guest: null,
+    max_likes_per_guest: null,
+    ...overrides,
+  };
+  const existing = await db('event_feedback_settings').where('event_id', eventId).first();
+  if (existing) {
+    await db('event_feedback_settings').where('event_id', eventId).update(base);
+  } else {
+    await db('event_feedback_settings').insert({
+      event_id: eventId,
+      ...base,
+      created_at: new Date(),
+      updated_at: new Date(),
+    });
+  }
+}
+
+async function favorite(photoId, guestIdentifier = GUEST_A) {
+  return feedbackService.submitFeedback(photoId, eventId, {
+    feedback_type: 'favorite',
+    ip_address: '127.0.0.1',
+    user_agent: 'jest',
+  }, guestIdentifier);
+}
+
+async function like(photoId, guestIdentifier = GUEST_A) {
+  return feedbackService.submitFeedback(photoId, eventId, {
+    feedback_type: 'like',
+    ip_address: '127.0.0.1',
+    user_agent: 'jest',
+  }, guestIdentifier);
+}
+
+beforeAll(async () => {
+  ({ db, cleanup } = await bootCrmDb());
+  await seedMinimal(db);
+  const inserted = await db('events').insert({
+    slug: EVENT_SLUG,
+    event_type: 'wedding',
+    event_name: 'Cap Test',
+    event_date: '2026-06-22',
+    host_email: 'host@example.com',
+    admin_email: 'admin@example.com',
+    password_hash: 'x',
+    share_link: `/gallery/${EVENT_SLUG}/share`,
+    share_token: 'cap-test-share',
+    expires_at: new Date(Date.now() + 7 * 24 * 3600 * 1000).toISOString(),
+    is_active: 1,
+    is_archived: 0,
+    is_draft: 0,
+    created_at: new Date().toISOString(),
+  }).returning('id');
+  eventId = inserted[0]?.id ?? inserted[0];
+
+  // Seed 15 photos so we can test caps comfortably up to that count.
+  photoIds = [];
+  for (let i = 1; i <= 15; i += 1) {
+    const r = await db('photos').insert({
+      event_id: eventId,
+      filename: `photo-${i}.jpg`,
+      path: `events/cap/${i}.jpg`,
+      type: 'individual',
+      uploaded_at: new Date().toISOString(),
+    }).returning('id');
+    photoIds.push(r[0]?.id ?? r[0]);
+  }
+}, 30000);
+
+afterAll(async () => { if (cleanup) await cleanup(); });
+
+beforeEach(async () => {
+  await db('photo_feedback').where('event_id', eventId).del();
+});
+
+describe('per-guest favorite cap (#655)', () => {
+  test('null cap = unlimited (back-compat for installs without #655)', async () => {
+    await setEventFeedbackSettings({ max_favorites_per_guest: null });
+    for (const id of photoIds.slice(0, 12)) {
+      const r = await favorite(id);
+      expect(r.limit_reached).toBeFalsy();
+      expect(r.created).toBe(true);
+    }
+  });
+
+  test('cap = 0 also = unlimited (UI convenience for "no limit")', async () => {
+    await setEventFeedbackSettings({ max_favorites_per_guest: 0 });
+    for (const id of photoIds.slice(0, 12)) {
+      const r = await favorite(id);
+      expect(r.limit_reached).toBeFalsy();
+    }
+  });
+
+  test('cap = 10: favorites 1..10 succeed, 11 returns limit_reached', async () => {
+    await setEventFeedbackSettings({ max_favorites_per_guest: 10 });
+    for (const id of photoIds.slice(0, 10)) {
+      const r = await favorite(id);
+      expect(r.created).toBe(true);
+    }
+    const r11 = await favorite(photoIds[10]);
+    expect(r11.limit_reached).toBe(true);
+    expect(r11.limit).toBe(10);
+    expect(r11.current_count).toBe(10);
+    expect(r11.feedback_type).toBe('favorite');
+  });
+
+  test('toggle-off at the cap frees a slot (un-favoriting always allowed)', async () => {
+    await setEventFeedbackSettings({ max_favorites_per_guest: 5 });
+    for (const id of photoIds.slice(0, 5)) {
+      await favorite(id);
+    }
+    const blocked = await favorite(photoIds[5]);
+    expect(blocked.limit_reached).toBe(true);
+
+    // Un-favorite one — toggle off path returns { removed: true }
+    const removed = await favorite(photoIds[0]);
+    expect(removed.removed).toBe(true);
+
+    // Now the previously-blocked slot fits
+    const after = await favorite(photoIds[5]);
+    expect(after.created).toBe(true);
+  });
+
+  test('limit reduction grandfathers existing rows; new adds blocked', async () => {
+    await setEventFeedbackSettings({ max_favorites_per_guest: 10 });
+    for (const id of photoIds.slice(0, 10)) {
+      await favorite(id);
+    }
+    // Admin lowers the cap to 5 while the guest already has 10
+    await setEventFeedbackSettings({ max_favorites_per_guest: 5 });
+    // Existing 10 stay
+    const count = await db('photo_feedback')
+      .where({ event_id: eventId, feedback_type: 'favorite', guest_identifier: GUEST_A })
+      .count('* as c').first();
+    expect(parseInt(count.c, 10)).toBe(10);
+    // New adds blocked
+    const blocked = await favorite(photoIds[10]);
+    expect(blocked.limit_reached).toBe(true);
+    expect(blocked.limit).toBe(5);
+    expect(blocked.current_count).toBe(10);
+    // Removals still allowed
+    const removed = await favorite(photoIds[0]);
+    expect(removed.removed).toBe(true);
+  });
+
+  test('cap is per-guest: guest B is unaffected by guest A hitting the cap', async () => {
+    await setEventFeedbackSettings({ max_favorites_per_guest: 3 });
+    for (const id of photoIds.slice(0, 3)) {
+      await favorite(id, GUEST_A);
+    }
+    expect((await favorite(photoIds[3], GUEST_A)).limit_reached).toBe(true);
+
+    // Guest B starts at 0
+    for (const id of photoIds.slice(0, 3)) {
+      const r = await favorite(id, GUEST_B);
+      expect(r.created).toBe(true);
+    }
+    expect((await favorite(photoIds[3], GUEST_B)).limit_reached).toBe(true);
+  });
+});
+
+describe('per-guest like cap (#655)', () => {
+  test('favorite cap does NOT block likes on the same photo (per-type)', async () => {
+    await setEventFeedbackSettings({
+      max_favorites_per_guest: 3,
+      max_likes_per_guest: null,
+    });
+    for (const id of photoIds.slice(0, 3)) {
+      await favorite(id);
+    }
+    expect((await favorite(photoIds[3])).limit_reached).toBe(true);
+
+    // Likes still unlimited
+    for (const id of photoIds.slice(0, 10)) {
+      const r = await like(id);
+      expect(r.created).toBe(true);
+    }
+  });
+
+  test('like cap returns LIKE_LIMIT_REACHED-shaped payload', async () => {
+    await setEventFeedbackSettings({ max_likes_per_guest: 2 });
+    await like(photoIds[0]);
+    await like(photoIds[1]);
+    const r = await like(photoIds[2]);
+    expect(r.limit_reached).toBe(true);
+    expect(r.feedback_type).toBe('like');
+    expect(r.limit).toBe(2);
+    expect(r.current_count).toBe(2);
+  });
+});

backend/__tests__/utils/galleryShortUrlValidation.test.js

@@ -0,0 +1,120 @@
+/**
+ * Pure-function tests for the slug validator in galleryShortUrlService.
+ * The validator is the security boundary for the `/s/<slug>` public
+ * route — bad shapes leak into a UNIQUE column that's used in URLs
+ * without further escaping, so the rules need to be tight.
+ */
+
+// Provide a minimal db stub so requiring the service doesn't crash —
+// the validator path doesn't touch the DB.
+jest.mock('../../src/database/db', () => ({ db: jest.fn() }));
+jest.mock('../../src/utils/logger', () => ({
+  info: jest.fn(), warn: jest.fn(), error: jest.fn(), debug: jest.fn(),
+}));
+jest.mock('../../src/utils/appSettings', () => ({
+  getAppSetting: jest.fn().mockResolvedValue(false),
+}));
+
+const {
+  validateSlug,
+  _RESERVED_SLUGS,
+} = require('../../src/services/galleryShortUrlService');
+
+describe('validateSlug', () => {
+  describe('accepts', () => {
+    test.each([
+      'sofia-graduation',
+      'sofia',
+      'a',                   // single char (alphanumeric)
+      '1',                   // single digit
+      'abc123',
+      '123-abc',
+      'sofia-2026-06-05',
+      'sofia-2026',
+      'a-b-c-d',
+      'wedding-2026',
+      'xK7p2'.toLowerCase(), // lowercase 5-char
+      'a'.repeat(64),        // exactly at the limit
+    ])('%j', (slug) => {
+      expect(validateSlug(slug)).toBeNull();
+    });
+  });
+
+  describe('rejects', () => {
+    test.each([
+      ['', 'cannot be empty'],
+      ['   ', 'cannot be empty'],          // trimmed → empty
+      ['-sofia', 'lowercase letters'],     // leading hyphen
+      ['sofia-', 'lowercase letters'],     // trailing hyphen
+      ['Sofia', 'lowercase letters'],      // uppercase
+      ['sofia_graduation', 'lowercase letters'],  // underscore
+      ['sofia.graduation', 'lowercase letters'],  // dot
+      ['sofia graduation', 'lowercase letters'],  // space
+      ['sofia/graduation', 'lowercase letters'],  // slash (path traversal vector)
+      ['sofia%20graduation', 'lowercase letters'],
+      ['a'.repeat(65), 'at most 64'],      // one over limit
+    ])('%j → %s', (slug, expectedReason) => {
+      const result = validateSlug(slug);
+      expect(result).not.toBeNull();
+      expect(result.toLowerCase()).toContain(expectedReason);
+    });
+
+    test('null', () => {
+      expect(validateSlug(null)).toContain('must be a string');
+    });
+
+    test('undefined', () => {
+      expect(validateSlug(undefined)).toContain('must be a string');
+    });
+
+    test('number', () => {
+      expect(validateSlug(42)).toContain('must be a string');
+    });
+
+    test('object', () => {
+      expect(validateSlug({})).toContain('must be a string');
+    });
+  });
+
+  describe('reserved slugs', () => {
+    test.each([
+      'admin',
+      'api',
+      'auth',
+      'gallery',
+      'og',
+      'health',
+      's',           // can't shadow the shortener itself
+      'login',
+      'favicon.ico', // even with the dot — covered by SLUG_REGEX fail too
+    ])('reserves %j', (slug) => {
+      expect(_RESERVED_SLUGS.has(slug)).toBe(true);
+    });
+
+    test('"admin" → rejected with "reserved" reason', () => {
+      // validateSlug short-circuits at the regex for slugs containing
+      // dots (favicon.ico fails the regex first). Test a clean
+      // alphanumeric reserved word.
+      const result = validateSlug('admin');
+      expect(result).toBe('short_slug is reserved');
+    });
+  });
+
+  describe('path-traversal + URL-injection vectors are rejected at the regex', () => {
+    test.each([
+      '../etc/passwd',
+      'foo/../bar',
+      'foo?query=1',
+      'foo#fragment',
+      'foo&bar',
+      'foo bar',
+      'foo<script>',
+      'foo>',
+      'foo"',
+      'foo\'',
+      'foo;rm -rf',
+    ])('%j', (slug) => {
+      expect(validateSlug(slug)).not.toBeNull();
+    });
+  });
+});

backend/__tests__/utils/iban.test.js

@@ -0,0 +1,124 @@
+/**
+ * Tests for the ISO 13616 IBAN validator.
+ *
+ * Reference IBANs sourced from the SWIFT IBAN Registry "Example" section
+ * — they are publicly published sample values used by every IBAN
+ * implementation as test vectors. NOT real account numbers.
+ */
+const { validateIban, _internal } = require('../../src/utils/iban');
+
+describe('validateIban', () => {
+  it('accepts a canonical Swiss IBAN', () => {
+    const out = validateIban('CH9300762011623852957');
+    expect(out.valid).toBe(true);
+    expect(out.normalized).toBe('CH9300762011623852957');
+    expect(out.reason).toBeUndefined();
+  });
+
+  it('accepts a Liechtenstein IBAN', () => {
+    expect(validateIban('LI21088100002324013AA').valid).toBe(true);
+  });
+
+  it('accepts a German IBAN', () => {
+    expect(validateIban('DE89370400440532013000').valid).toBe(true);
+  });
+
+  it('accepts an Austrian IBAN', () => {
+    expect(validateIban('AT611904300234573201').valid).toBe(true);
+  });
+
+  it('accepts a British IBAN with alphanumeric BBAN', () => {
+    expect(validateIban('GB82WEST12345698765432').valid).toBe(true);
+  });
+
+  it('normalises spaces and lowercase input', () => {
+    const out = validateIban(' ch93 0076 2011 6238 5295 7 ');
+    expect(out.valid).toBe(true);
+    expect(out.normalized).toBe('CH9300762011623852957');
+  });
+
+  it('normalises mixed-case input', () => {
+    const out = validateIban('ch9300762011623852957');
+    expect(out.valid).toBe(true);
+    expect(out.normalized).toBe('CH9300762011623852957');
+  });
+
+  it('rejects an empty / null / undefined value', () => {
+    expect(validateIban('').reason).toBe('EMPTY');
+    expect(validateIban('   ').reason).toBe('EMPTY');
+    expect(validateIban(null).reason).toBe('EMPTY');
+    expect(validateIban(undefined).reason).toBe('EMPTY');
+  });
+
+  it('rejects a malformed string (numbers in the country slot)', () => {
+    const out = validateIban('12930076201162385295');
+    expect(out.valid).toBe(false);
+    expect(out.reason).toBe('FORMAT');
+  });
+
+  it('rejects a too-short string', () => {
+    expect(validateIban('CH93').reason).toBe('FORMAT');
+  });
+
+  it('rejects a too-long string (over 34 chars)', () => {
+    // 35 chars: pads beyond the ISO 13616 max
+    expect(validateIban('CH9300762011623852957XXXXXXXXXXXXXX').reason).toBe('FORMAT');
+  });
+
+  it('rejects a known-country IBAN with the wrong length', () => {
+    // CH must be 21 chars; this one is 22.
+    const out = validateIban('CH9300762011623852957X');
+    expect(out.valid).toBe(false);
+    expect(out.reason).toBe('LENGTH');
+  });
+
+  it('rejects an IBAN with a broken checksum', () => {
+    // Same shape, last digit altered.
+    const out = validateIban('CH9300762011623852950');
+    expect(out.valid).toBe(false);
+    expect(out.reason).toBe('CHECKSUM');
+  });
+
+  it('rejects an IBAN with internally invalid characters', () => {
+    expect(validateIban('CH93007620!1623852957').reason).toBe('FORMAT');
+  });
+
+  it('accepts an unknown-country IBAN that meets the generic length range', () => {
+    // Made-up country code "ZZ" — not in IBAN_LENGTHS but the
+    // structural regex passes if length is in [15, 34] and the
+    // checksum holds. Build a checksum-valid string:
+    //
+    //   Format: ZZ + check + BBAN. We don't have a real ZZ template
+    //   so this test just confirms unknown country codes route
+    //   through the fallback length check rather than failing on
+    //   LENGTH outright. A checksum-failing ZZ value will hit
+    //   CHECKSUM, not LENGTH, which is the assertion below.
+    const out = validateIban('ZZ00ABCDEFGHIJKLMNOP');
+    expect(out.valid).toBe(false);
+    expect(out.reason).toBe('CHECKSUM'); // not LENGTH
+  });
+});
+
+describe('mod97', () => {
+  it('returns 1 for the canonical CH test vector', () => {
+    expect(_internal.mod97('CH9300762011623852957')).toBe(1);
+  });
+
+  it('returns something other than 1 for a tampered IBAN', () => {
+    expect(_internal.mod97('CH9300762011623852950')).not.toBe(1);
+  });
+});
+
+describe('IBAN_LENGTHS table', () => {
+  it('has the expected lengths for the most common European countries', () => {
+    // Sanity check that the table didn't drift if someone edits it.
+    expect(_internal.IBAN_LENGTHS.CH).toBe(21);
+    expect(_internal.IBAN_LENGTHS.DE).toBe(22);
+    expect(_internal.IBAN_LENGTHS.AT).toBe(20);
+    expect(_internal.IBAN_LENGTHS.LI).toBe(21);
+    expect(_internal.IBAN_LENGTHS.FR).toBe(27);
+    expect(_internal.IBAN_LENGTHS.IT).toBe(27);
+    expect(_internal.IBAN_LENGTHS.GB).toBe(22);
+    expect(_internal.IBAN_LENGTHS.NL).toBe(18);
+  });
+});

backend/__tests__/utils/invoiceRounding.test.js

@@ -0,0 +1,66 @@
+const { cleanNetMinor, exactLineMinor } = require('../../src/utils/invoiceRounding');
+
+// Sum the per-line ROUNDED totals the way computeTotals / createInvoice do,
+// so each test can compare "sum of rounded lines" against cleanNetMinor.
+function roundedNet(items, parentKey = 'parent_position') {
+  return items
+    .filter((li) => li[parentKey] == null || li[parentKey] === '')
+    .reduce((s, li) => s + Math.round(li.line_total_minor), 0);
+}
+
+function mkLine(position, quantity, unitPriceMinor, extra = {}) {
+  const discount = extra.discount_percent || 0;
+  return {
+    position,
+    quantity,
+    unit_price_minor: unitPriceMinor,
+    discount_percent: discount,
+    line_total_minor: Math.round(Math.round(quantity * unitPriceMinor) * (1 - discount / 100)),
+    parent_position: extra.parent_position ?? null,
+  };
+}
+
+describe('cleanNetMinor — sub-cent reconciliation', () => {
+  it('reconciles the real 68h × 32.25 invoice (sum-of-lines 2193.02 → clean 2193.00)', () => {
+    const qtys = [5.25, 3.25, 5.25, 2.75, 2, 1, 1.75, 5, 5.25, 5.25, 2.75,
+      4.5, 3.5, 2.5, 4.5, 2, 1.75, 3.25, 1.75, 3.5, 1.25];
+    const items = qtys.map((q, i) => mkLine(i + 1, q, 3225));
+    expect(roundedNet(items)).toBe(219302); // sum of the 21 rounded lines
+    expect(cleanNetMinor(items)).toBe(219300); // full-precision, rounded once
+    expect(cleanNetMinor(items) - roundedNet(items)).toBe(-2); // the -0.02 drift
+  });
+
+  it('is a no-op when every line is already cent-exact (adjustment 0)', () => {
+    const items = [mkLine(1, 2, 5000), mkLine(2, 3, 4000)];
+    expect(cleanNetMinor(items)).toBe(roundedNet(items));
+  });
+
+  it('is rate-agnostic: mixed hourly rates reconcile to one clean net', () => {
+    const items = [mkLine(1, 2.5, 3225), mkLine(2, 1.25, 3225), mkLine(3, 3.5, 4850), mkLine(4, 1.75, 4850)];
+    // sum-of-lines = 80.63 + 40.31 + 169.75 + 84.88 = 375.57; clean = 375.56
+    expect(roundedNet(items)).toBe(37557);
+    expect(cleanNetMinor(items)).toBe(37556);
+  });
+
+  it('honours per-line discounts at full precision', () => {
+    const items = [mkLine(1, 3, 1000, { discount_percent: 33 })];
+    // exact = 3 × 1000 × 0.67 = 2010 exactly → clean 2010
+    expect(cleanNetMinor(items)).toBe(2010);
+  });
+
+  it('migration-119 hierarchy: a parent with priced sub-items derives from the children', () => {
+    // Parent (pos 1) has two priced sub-items; parent own price ignored.
+    const parent = mkLine(1, 1, 9999); // own price should NOT count
+    const subA = mkLine(2, 2.5, 3225, { parent_position: 1 });
+    const subB = mkLine(3, 1.75, 3225, { parent_position: 1 });
+    const items = [parent, subA, subB];
+    // exact children = (2.5 + 1.75) × 3225 = 4.25 × 3225 = 13706.25 → 13706
+    expect(cleanNetMinor(items)).toBe(13706);
+    // parent's own 9999 must not leak in
+    expect(cleanNetMinor(items)).not.toBe(9999);
+  });
+
+  it('exactLineMinor returns the un-rounded product', () => {
+    expect(exactLineMinor({ quantity: 2.5, unit_price_minor: 3225 })).toBeCloseTo(8062.5, 5);
+  });
+});

backend/__tests__/utils/networkValidation.test.js

@@ -0,0 +1,113 @@
+/**
+ * Tests for the SSRF guard in `networkValidation.js`.
+ *
+ * Regression coverage for GHSA-wmjx-pc37-272r — the original `isPrivateIPv6`
+ * was a string-prefix check that missed NAT64 (`64:ff9b::/96` per RFC 6052,
+ * `64:ff9b:1::/48` per RFC 8215), so a webhook URL like
+ * `http://[64:ff9b:1::a9fe:a9fe]/` could reach 169.254.169.254 on instances
+ * with NAT64/DNS64 egress.
+ */
+
+const { validateExternalUrl, isPrivateIP } = require('../../src/utils/networkValidation');
+
+describe('validateExternalUrl — NAT64 + embedded-IPv4 SSRF', () => {
+  describe('NAT64 well-known prefix (RFC 6052, 64:ff9b::/96)', () => {
+    test.each([
+      ['http://[64:ff9b::a9fe:a9fe]/latest/meta-data/', 'AWS metadata via NAT64 hex'],
+      ['http://[64:ff9b::169.254.169.254]/', 'AWS metadata via NAT64 mixed notation'],
+      ['http://[64:ff9b::7f00:1]/', 'loopback via NAT64'],
+      ['http://[64:ff9b::a00:1]/', '10.0.0.1 via NAT64'],
+    ])('blocks %s (%s)', (url) => {
+      expect(validateExternalUrl(url).valid).toBe(false);
+    });
+  });
+
+  describe('NAT64 local-use prefix (RFC 8215, 64:ff9b:1::/48)', () => {
+    test.each([
+      ['http://[64:ff9b:1::a9fe:a9fe]/', 'AWS metadata via local-use NAT64'],
+      ['http://[64:ff9b:1::169.254.169.254]/', 'AWS metadata via mixed notation'],
+      ['http://[64:ff9b:1::7f00:1]/', 'loopback via local-use NAT64'],
+      ['http://[64:ff9b:1:abcd::1]/', 'arbitrary host inside the /48'],
+    ])('blocks %s (%s)', (url) => {
+      expect(validateExternalUrl(url).valid).toBe(false);
+    });
+  });
+
+  describe('IPv4-mapped IPv6 (::ffff:0:0/96)', () => {
+    test.each([
+      'http://[::ffff:127.0.0.1]/',
+      'http://[::ffff:7f00:1]/',
+      'http://[::ffff:169.254.169.254]/',
+      'http://[::ffff:a9fe:a9fe]/',
+      'http://[::ffff:10.0.0.1]/',
+    ])('blocks %s', (url) => {
+      expect(validateExternalUrl(url).valid).toBe(false);
+    });
+  });
+
+  describe('deprecated IPv4-compatible IPv6 (::/96)', () => {
+    test('blocks ::127.0.0.1', () => {
+      expect(validateExternalUrl('http://[::127.0.0.1]/').valid).toBe(false);
+    });
+    test('blocks ::169.254.169.254', () => {
+      expect(validateExternalUrl('http://[::169.254.169.254]/').valid).toBe(false);
+    });
+  });
+
+  describe('existing IPv6 private-range coverage stays intact', () => {
+    test.each([
+      'http://[::1]/',
+      'http://[fc00::1]/',
+      'http://[fd12:3456:789a::1]/',
+      'http://[fe80::1]/',
+      'http://[feb0::1]/',
+      'http://[::]/',
+    ])('blocks %s', (url) => {
+      expect(validateExternalUrl(url).valid).toBe(false);
+    });
+  });
+
+  describe('public IPv6 hosts stay allowed', () => {
+    test.each([
+      'https://[2001:4860:4860::8888]/',
+      'https://[2606:4700:4700::1111]/',
+      'https://[2a00:1450:4001:830::200e]/',
+    ])('allows %s', (url) => {
+      expect(validateExternalUrl(url).valid).toBe(true);
+    });
+  });
+
+  describe('existing IPv4 private-range coverage stays intact', () => {
+    test.each([
+      'http://127.0.0.1/',
+      'http://10.0.0.1/',
+      'http://172.16.0.1/',
+      'http://192.168.0.1/',
+      'http://169.254.169.254/',
+      'http://0.0.0.0/',
+    ])('blocks %s', (url) => {
+      expect(validateExternalUrl(url).valid).toBe(false);
+    });
+  });
+
+  describe('blocked hostnames', () => {
+    test.each([
+      'http://localhost/',
+      'http://metadata.google.internal/',
+    ])('blocks %s', (url) => {
+      expect(validateExternalUrl(url).valid).toBe(false);
+    });
+  });
+
+  describe('fail-closed parsing', () => {
+    test('isPrivateIP returns true for non-string', () => {
+      expect(isPrivateIP(null)).toBe(true);
+      expect(isPrivateIP(undefined)).toBe(true);
+      expect(isPrivateIP(42)).toBe(true);
+    });
+    test('invalid URLs are rejected', () => {
+      expect(validateExternalUrl('not a url').valid).toBe(false);
+      expect(validateExternalUrl('').valid).toBe(false);
+    });
+  });
+});

backend/__tests__/utils/pdfFilename.test.js

@@ -0,0 +1,121 @@
+/**
+ * Pure-function tests for the PDF filename builder used on every
+ * quote / invoice download endpoint + the PDF's internal Title
+ * metadata. No mocks needed — all behavior is deterministic.
+ */
+const { buildPdfFilename, sanitiseSegment, customerLabel } = require('../../src/utils/pdfFilename');
+
+describe('sanitiseSegment', () => {
+  it('returns empty string for null/undefined', () => {
+    expect(sanitiseSegment(null)).toBe('');
+    expect(sanitiseSegment(undefined)).toBe('');
+    expect(sanitiseSegment('')).toBe('');
+  });
+
+  it('replaces filesystem-hostile characters with "-"', () => {
+    expect(sanitiseSegment('a/b\\c:d*e?f"g<h>i|j')).toBe('a-b-c-d-e-f-g-h-i-j');
+  });
+
+  it('collapses spaces into single "-"', () => {
+    expect(sanitiseSegment('ACME   GmbH   AG')).toBe('ACME-GmbH-AG');
+  });
+
+  it('collapses repeat dashes', () => {
+    expect(sanitiseSegment('a-----b')).toBe('a-b');
+  });
+
+  it('trims leading + trailing dashes/dots', () => {
+    expect(sanitiseSegment('--..--Hello..--..')).toBe('Hello');
+  });
+
+  it('preserves non-ASCII letters', () => {
+    expect(sanitiseSegment('Müller & Söhne')).toBe('Müller-&-Söhne');
+  });
+
+  it('caps length at 80 chars by default', () => {
+    const long = 'a'.repeat(120);
+    expect(sanitiseSegment(long)).toHaveLength(80);
+  });
+
+  it('honors custom maxLen', () => {
+    expect(sanitiseSegment('abcdefghij', 5)).toBe('abcde');
+  });
+});
+
+describe('customerLabel', () => {
+  it('prefers company_name over person name', () => {
+    expect(customerLabel({
+      company_name: 'ACME GmbH',
+      first_name: 'Luca', last_name: 'Bresch',
+    })).toBe('ACME-GmbH');
+  });
+
+  it('falls back to first + last when company_name is empty', () => {
+    expect(customerLabel({
+      company_name: '',
+      first_name: 'Luca', last_name: 'Bresch',
+    })).toBe('Luca-Bresch');
+  });
+
+  it('falls back to display_name when no company + no person', () => {
+    expect(customerLabel({
+      display_name: 'Luca B.',
+    })).toBe('Luca-B');
+  });
+
+  it('falls back to email local-part as a last resort', () => {
+    expect(customerLabel({
+      email: 'luca@bresch.cc',
+    })).toBe('luca');
+  });
+
+  it('uses "customer" when everything is missing', () => {
+    expect(customerLabel({})).toBe('customer');
+    expect(customerLabel(null)).toBe('customer');
+  });
+
+  it('trims whitespace before evaluating truthiness', () => {
+    // company_name = "   " should NOT trigger the company branch.
+    expect(customerLabel({
+      company_name: '   ',
+      first_name: 'Luca', last_name: 'Bresch',
+    })).toBe('Luca-Bresch');
+  });
+});
+
+describe('buildPdfFilename', () => {
+  const customer = { company_name: 'ACME GmbH' };
+
+  it('builds "<docNumber>_<customer>.pdf" for a regular invoice', () => {
+    expect(buildPdfFilename({
+      docNumber: 'R-2026-0001',
+      customer,
+    })).toBe('R-2026-0001_ACME-GmbH.pdf');
+  });
+
+  it('falls back to the fallback when docNumber is null (preview)', () => {
+    expect(buildPdfFilename({
+      docNumber: null,
+      customer,
+      fallback: 'invoice-preview',
+    })).toBe('invoice-preview_ACME-GmbH.pdf');
+  });
+
+  it('uses "document" when both docNumber + fallback are absent', () => {
+    expect(buildPdfFilename({ customer })).toBe('document_ACME-GmbH.pdf');
+  });
+
+  it('sanitises the customer half too', () => {
+    expect(buildPdfFilename({
+      docNumber: 'R-2026-0001',
+      customer: { company_name: 'Bad/Name:Inc.' },
+    })).toBe('R-2026-0001_Bad-Name-Inc.pdf');
+  });
+
+  it('always ends with .pdf', () => {
+    expect(buildPdfFilename({
+      docNumber: 'R-2026-0001',
+      customer: {},
+    })).toMatch(/\.pdf$/);
+  });
+});

backend/__tests__/utils/resolveLogoFile.test.js

@@ -0,0 +1,108 @@
+/**
+ * resolveLogoFile — verifies the path-priority chain + the
+ * unsupported-format guard. fs + appSettings + storage config are
+ * mocked so the test is fully deterministic.
+ */
+
+jest.mock('../../src/utils/appSettings', () => ({
+  getAppSetting: jest.fn(),
+}));
+jest.mock('../../src/config/storage', () => ({
+  getStoragePath: jest.fn(() => '/app/storage'),
+}));
+jest.mock('../../src/utils/logger', () => ({
+  info: jest.fn(),
+  warn: jest.fn(),
+  error: jest.fn(),
+}));
+
+const fs = require('fs');
+const { resolveLogoFile } = require('../../src/utils/resolveLogoFile');
+const { getAppSetting } = require('../../src/utils/appSettings');
+
+describe('resolveLogoFile', () => {
+  let existsSpy, statSpy;
+
+  beforeEach(() => {
+    existsSpy = jest.spyOn(fs, 'existsSync');
+    statSpy = jest.spyOn(fs, 'statSync');
+    existsSpy.mockReturnValue(false);
+    statSpy.mockImplementation(() => ({ isFile: () => true }));
+    getAppSetting.mockReset();
+  });
+
+  afterEach(() => {
+    existsSpy.mockRestore();
+    statSpy.mockRestore();
+  });
+
+  it('returns null when no sources are configured', async () => {
+    getAppSetting.mockResolvedValue(null);
+    const out = await resolveLogoFile({});
+    expect(out).toBeNull();
+  });
+
+  it('prefers business_profile.logo_path over branding fallbacks', async () => {
+    // The profile path exists, branding doesn't.
+    existsSpy.mockImplementation((p) => p === '/app/storage/uploads/logos/profile.png');
+    getAppSetting.mockResolvedValue('/uploads/logos/branding.png');
+    const out = await resolveLogoFile({
+      logo_path: 'uploads/logos/profile.png',
+    });
+    expect(out).toBe('/app/storage/uploads/logos/profile.png');
+  });
+
+  it('falls back to branding_logo_path when profile is empty', async () => {
+    existsSpy.mockImplementation((p) => p === '/app/storage/uploads/logos/branding.png');
+    getAppSetting.mockImplementation(async (key) => {
+      if (key === 'branding_logo_path') return '/app/storage/uploads/logos/branding.png';
+      return null;
+    });
+    const out = await resolveLogoFile({ logo_path: '' });
+    expect(out).toBe('/app/storage/uploads/logos/branding.png');
+  });
+
+  it('falls back to branding_logo_url when branding_logo_path is absent', async () => {
+    existsSpy.mockImplementation((p) => p === '/app/storage/uploads/logos/branding.png');
+    getAppSetting.mockImplementation(async (key) => {
+      if (key === 'branding_logo_url') return '/uploads/logos/branding.png';
+      return null;
+    });
+    const out = await resolveLogoFile({});
+    expect(out).toBe('/app/storage/uploads/logos/branding.png');
+  });
+
+  it('skips SVG (PDFKit cannot embed)', async () => {
+    existsSpy.mockImplementation((p) => p === '/app/storage/uploads/logos/logo.svg');
+    getAppSetting.mockResolvedValue(null);
+    const out = await resolveLogoFile({ logo_path: 'uploads/logos/logo.svg' });
+    expect(out).toBeNull();
+  });
+
+  it('also rejects WebP / GIF / TIFF', async () => {
+    for (const ext of ['webp', 'gif', 'tif', 'tiff']) {
+      existsSpy.mockReturnValue(true);
+      statSpy.mockImplementation(() => ({ isFile: () => true }));
+      existsSpy.mockImplementation((p) => p === `/app/storage/uploads/logos/logo.${ext}`);
+      getAppSetting.mockResolvedValue(null);
+      const out = await resolveLogoFile({ logo_path: `uploads/logos/logo.${ext}` });
+      expect(out).toBeNull();
+    }
+  });
+
+  it('accepts PNG and JPEG', async () => {
+    for (const ext of ['png', 'jpg', 'jpeg', 'PNG', 'JPG']) {
+      existsSpy.mockImplementation((p) => p === `/app/storage/uploads/logos/logo.${ext}`);
+      getAppSetting.mockResolvedValue(null);
+      const out = await resolveLogoFile({ logo_path: `uploads/logos/logo.${ext}` });
+      expect(out).toBe(`/app/storage/uploads/logos/logo.${ext}`);
+    }
+  });
+
+  it('treats absolute paths as-is when they exist', async () => {
+    existsSpy.mockImplementation((p) => p === '/abs/path/logo.png');
+    getAppSetting.mockResolvedValue(null);
+    const out = await resolveLogoFile({ logo_path: '/abs/path/logo.png' });
+    expect(out).toBe('/abs/path/logo.png');
+  });
+});

backend/__tests__/utils/spreadsheetSafe.test.js

@@ -0,0 +1,37 @@
+const { neutralizeSpreadsheetFormula } = require('../../src/utils/spreadsheetSafe');
+const { _internal } = require('../../src/services/ledgerService');
+
+describe('neutralizeSpreadsheetFormula — CSV/Banana formula-injection defence (PR #622 blocker 1)', () => {
+  it.each([
+    ['=', '=cmd|"/C calc"!A1'],
+    ['+', '+1+1'],
+    ['-', '-2+3'],
+    ['@', '@SUM(1+1)'],
+    ['tab', '\tSUM(A1)'],
+    ['carriage-return', '\rSUM(A1)'],
+  ])('prefixes a single quote when the cell starts with %s', (_label, payload) => {
+    const out = neutralizeSpreadsheetFormula(payload);
+    expect(out).toBe(`'${payload}`);
+    expect(out[0]).toBe("'");
+  });
+
+  it('leaves safe values untouched', () => {
+    expect(neutralizeSpreadsheetFormula('LBM-R-2026-0001')).toBe('LBM-R-2026-0001');
+    expect(neutralizeSpreadsheetFormula('Acme GmbH')).toBe('Acme GmbH');
+    expect(neutralizeSpreadsheetFormula('29.40')).toBe('29.40');
+    // A minus only mid-string is fine — only a LEADING risky char matters.
+    expect(neutralizeSpreadsheetFormula('Q-2026-0001')).toBe('Q-2026-0001');
+  });
+
+  it('coerces null/undefined to empty string', () => {
+    expect(neutralizeSpreadsheetFormula(null)).toBe('');
+    expect(neutralizeSpreadsheetFormula(undefined)).toBe('');
+  });
+
+  it('ledgerService.csvEscape applies the prefix AND the RFC-4180 quote wrap', () => {
+    // formula cell → prefixed then quote-wrapped
+    expect(_internal.csvEscape('=1+1')).toBe('"\'=1+1"');
+    // embedded quotes still doubled; safe value not prefixed
+    expect(_internal.csvEscape('a"b')).toBe('"a""b"');
+  });
+});

backend/__tests__/utils/whatsNew.test.js

@@ -0,0 +1,69 @@
+const { parseWhatsNew } = require('../../src/utils/whatsNew');
+
+describe('parseWhatsNew', () => {
+  it('prefers the curated <!-- whatsnew --> block', () => {
+    const body = [
+      '<!-- whatsnew -->',
+      '- Invoice drafts in list',
+      '- Bank transfer payments',
+      '<!-- /whatsnew -->',
+      '',
+      '### Features',
+      '* **invoices:** something long that should be ignored ([#1](http://x))',
+    ].join('\n');
+    expect(parseWhatsNew(body)).toEqual(['Invoice drafts in list', 'Bank transfer payments']);
+  });
+
+  it('falls back to the Features section, stripping scope + commit links', () => {
+    const body = [
+      '## [3.73.0-beta.0](http://x) (2026-06-29)',
+      '',
+      '### Features',
+      '',
+      '* **dashboard:** revenue tile toggles 365 days ([d1c9e02](http://c))',
+      '* **invoices:** surface monthly drafts in the Bills list ([e457656](http://c))',
+      '',
+      '### Bug Fixes',
+      '',
+      '* **invoices:** add bank transfer ([e96ef4c](http://c))',
+    ].join('\n');
+    expect(parseWhatsNew(body)).toEqual([
+      'revenue tile toggles 365 days',
+      'surface monthly drafts in the Bills list',
+    ]);
+  });
+
+  it('decodes HTML entities release-please escapes into changelog text', () => {
+    const body = '### Features\n* **gallery:** supports A &amp; B &lt;tags&gt; &quot;quoted&quot; ([#1](http://x))';
+    expect(parseWhatsNew(body)).toEqual(['supports A & B <tags> "quoted"']);
+  });
+
+  it('trims a trailing "— implementation detail" clause to the headline', () => {
+    const body = '### Features\n* **gallery:** branded URL shortener — /s/&lt;slug&gt; with OG injection ([#699](http://x))';
+    expect(parseWhatsNew(body)).toEqual(['branded URL shortener']);
+  });
+
+  it('leaves hyphenated words and dash-free bullets intact', () => {
+    const body = '### Features\n* **invoices:** mark-paid now supports bank transfer ([#2](http://x))';
+    expect(parseWhatsNew(body)).toEqual(['mark-paid now supports bank transfer']);
+  });
+
+  it('excludes Bug Fixes from the fallback', () => {
+    const body = '### Features\n* **a:** feature one\n### Bug Fixes\n* **b:** fix one';
+    expect(parseWhatsNew(body)).toEqual(['feature one']);
+  });
+
+  it('caps at 8 bullets and de-dups', () => {
+    const lines = Array.from({ length: 12 }, (_, i) => `- bullet ${i % 9}`);
+    const body = `<!-- whatsnew -->\n${lines.join('\n')}\n<!-- /whatsnew -->`;
+    const out = parseWhatsNew(body);
+    expect(out.length).toBe(8);
+    expect(new Set(out).size).toBe(8);
+  });
+
+  it('returns [] for empty / non-string input', () => {
+    expect(parseWhatsNew('')).toEqual([]);
+    expect(parseWhatsNew(null)).toEqual([]);
+    expect(parseWhatsNew(undefined)).toEqual([]);
+  });
+});

backend/__tests__/utils/whatsappBuildComponents.test.js

@@ -0,0 +1,136 @@
+/**
+ * Unit tests for the WhatsApp template-parameter selection (#647 follow-up).
+ *
+ * Pins:
+ *  - parseTemplateParams sanitizes unknown / non-string / duplicate keys,
+ *    and falls back to the default 5-slot shape on empty / malformed input.
+ *  - buildComponents emits ONLY the listed slots, in the listed order, so
+ *    a 2-parameter template (event_name + gallery_link) sends exactly 2
+ *    positional values — the reporter's exact case from issue #647.
+ *  - The legacy 5-slot default still works unchanged for installs that
+ *    haven't reconfigured.
+ */
+const {
+  buildComponents,
+  parseTemplateParams,
+  DEFAULT_TEMPLATE_PARAMS,
+} = require('../../src/services/whatsappProcessor');
+
+const baseData = {
+  customer_name: 'Aisha',
+  event_name: 'Wedding 2026',
+  gallery_link: 'https://picpeak.example/wedding-2026',
+  gallery_password: 'StrongPass!',
+  expiry_date: '2026-12-31T00:00:00Z',
+};
+
+describe('parseTemplateParams', () => {
+  test('returns the default 5-slot shape for empty / null / undefined input', () => {
+    expect(parseTemplateParams('')).toEqual(DEFAULT_TEMPLATE_PARAMS);
+    expect(parseTemplateParams(null)).toEqual(DEFAULT_TEMPLATE_PARAMS);
+    expect(parseTemplateParams(undefined)).toEqual(DEFAULT_TEMPLATE_PARAMS);
+  });
+
+  test('returns the default shape for malformed JSON', () => {
+    expect(parseTemplateParams('{not json')).toEqual(DEFAULT_TEMPLATE_PARAMS);
+  });
+
+  test('returns the default shape when JSON parses to a non-array', () => {
+    expect(parseTemplateParams('"event_name"')).toEqual(DEFAULT_TEMPLATE_PARAMS);
+    expect(parseTemplateParams('{"a":1}')).toEqual(DEFAULT_TEMPLATE_PARAMS);
+  });
+
+  test('preserves the reporter\'s 2-slot shape', () => {
+    const out = parseTemplateParams(JSON.stringify(['event_name', 'gallery_link']));
+    expect(out).toEqual(['event_name', 'gallery_link']);
+  });
+
+  test('drops unknown slot keys', () => {
+    const out = parseTemplateParams(JSON.stringify([
+      'event_name', 'unknown_slot', 'gallery_link', '__proto__',
+    ]));
+    expect(out).toEqual(['event_name', 'gallery_link']);
+  });
+
+  test('drops duplicate slot keys (first wins)', () => {
+    const out = parseTemplateParams(JSON.stringify([
+      'event_name', 'gallery_link', 'event_name',
+    ]));
+    expect(out).toEqual(['event_name', 'gallery_link']);
+  });
+
+  test('drops non-string entries', () => {
+    const out = parseTemplateParams(JSON.stringify([
+      'event_name', 42, null, { a: 1 }, 'gallery_link',
+    ]));
+    expect(out).toEqual(['event_name', 'gallery_link']);
+  });
+
+  test('falls back to default when every entry is invalid', () => {
+    const out = parseTemplateParams(JSON.stringify([
+      'unknown_a', 'unknown_b', null, 7,
+    ]));
+    expect(out).toEqual(DEFAULT_TEMPLATE_PARAMS);
+  });
+
+  test('also accepts an already-parsed array (defensive)', () => {
+    const out = parseTemplateParams(['event_name', 'gallery_link']);
+    expect(out).toEqual(['event_name', 'gallery_link']);
+  });
+});
+
+describe('buildComponents', () => {
+  test('legacy default shape emits 5 positional values, gallery_ready order', () => {
+    const out = buildComponents(baseData, 'en_US');
+    expect(out).toHaveLength(5);
+    expect(out[0]).toBe('Aisha');
+    expect(out[1]).toBe('Wedding 2026');
+    expect(out[2]).toBe('https://picpeak.example/wedding-2026');
+    expect(out[3]).toBe('🔒 Password: StrongPass!');
+    // expiry date is locale-formatted but always non-empty for a valid date
+    expect(out[4]).toMatch(/\d{2}/);
+  });
+
+  test('reporter\'s 2-slot shape — event_name + gallery_link, in that order', () => {
+    const out = buildComponents(baseData, 'ar', ['event_name', 'gallery_link']);
+    expect(out).toEqual(['Wedding 2026', 'https://picpeak.example/wedding-2026']);
+  });
+
+  test('reorder: gallery_link first, event_name second', () => {
+    const out = buildComponents(baseData, 'en_US', ['gallery_link', 'event_name']);
+    expect(out).toEqual(['https://picpeak.example/wedding-2026', 'Wedding 2026']);
+  });
+
+  test('empty slot list emits an empty components array (admin opted into nothing)', () => {
+    const out = buildComponents(baseData, 'en_US', []);
+    expect(out).toEqual([]);
+  });
+
+  test('password_line uses the locale-specific label when included', () => {
+    const out = buildComponents(baseData, 'ar', ['password_line']);
+    expect(out).toEqual(['🔒 كلمة المرور: StrongPass!']);
+  });
+
+  test('password_line is empty when no real password is set', () => {
+    const out = buildComponents(
+      { ...baseData, gallery_password: '' },
+      'en_US',
+      ['password_line'],
+    );
+    expect(out).toEqual(['']);
+  });
+
+  test('password_line is empty for the "No password required" sentinel', () => {
+    const out = buildComponents(
+      { ...baseData, gallery_password: 'No password required' },
+      'en_US',
+      ['password_line'],
+    );
+    expect(out).toEqual(['']);
+  });
+
+  test('omits expiry_date when omitted from the slot list', () => {
+    const out = buildComponents(baseData, 'en_US', ['event_name']);
+    expect(out).toEqual(['Wedding 2026']);
+  });
+});