Foundation for separating external supplier invoices from internal expenses,
per design review. This stage is additive + buildable; the service/route/UI
data rework follows in stage 2.
- Migration 126: incoming invoices own their payable on inbound_documents
(supplier_paid/at/method/ref + disposition + tax_treatment + booking event_id
+ category_id + re-bill markup/linkage); expenses gain kind (amount/mileage/
per_diem) + quantity + snapshotted rate_minor. Additive, hasColumn-guarded.
- Migration 127: seed `expenses` feature flag (default off) + accounting
app_settings (accounting_km_rate_minor=70, accounting_per_diem_rate_minor=0,
accounting_require_proof=false).
- Backend: `expenses` added to feature-flag known/defaults/dependency (forced
off when the accounting master is off); new PUT /admin/settings/accounting
(read via the generic GET /:type).
- Frontend: `expenses` flag (type + context + dependency); Features tab gets an
Expenses sub-card; the Expenses sub-nav + route now gate on `expenses` (not
incomingInvoices); AccountingIndex prefers inbox -> expenses -> tax.
- i18n: settings.features.expenses.* (EN + DE).
Verified: node -c; migration 124->126->127 harness (new columns, flag, settings
+ idempotency); en/de JSON valid; npm run build green.
Luca
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