fix: multiple improvements and CI/CD updates

Frontend fixes:
- Add missing translations for chunk upload (upload.uploadingChunks, common.chunk)
- Fix photo deletion visual bug by tracking deletion state per photo
- Prevent UI confusion when deleting photos in admin grid

Backend fixes:
- Add file existence checks before deleting thumbnails
- Prevent ENOENT errors for missing thumbnail files
- Improve error handling in photo deletion

CI/CD updates:
- Remove Gitea release creation from Drone pipeline
- Simplify GitHub mirror workflow (remove history rewriting, keep file removal)
- Add clean-git-history.sh script for manual history cleanup

These changes improve the admin photo management experience and streamline
the CI/CD process for better maintainability.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.drone.yml

@@ -108,52 +108,6 @@ steps:
         - VERSION=${DRONE_TAG}
         - VITE_API_URL=${VITE_API_URL:-/api}
 
-  # -------- NEW: Create Gitea Release --------
-  - name: gitea-release
-    image: plugins/gitea-release
-    when:
-      event: tag
-    settings:
-      api_key:
-        from_secret: GITEA_TOKEN
-      base_url: https://gitea.local.nothaft.cloud
-      files: []
-      title: PicPeak ${DRONE_TAG}
-      note: |
-        # PicPeak ${DRONE_TAG}
-
-        ## 🐳 Docker Images
-
-        This release includes Docker images published to local registry:
-
-        ```bash
-        # Backend
-        docker pull registry.local.nothaft.cloud/picpeak-backend:${DRONE_TAG}
-        docker pull registry.local.nothaft.cloud/picpeak-backend:latest
-
-        # Frontend
-        docker pull registry.local.nothaft.cloud/picpeak-frontend:${DRONE_TAG}
-        docker pull registry.local.nothaft.cloud/picpeak-frontend:latest
-        ```
-
-        ## 📦 What's New
-
-        See the [README](https://gitea.nothaft.cloud/paul/picpeak#readme) for features and documentation.
-
-        ## 🚀 Quick Start
-
-        ```bash
-        # Clone and deploy
-        git clone https://gitea.nothaft.cloud/paul/picpeak.git
-        cd picpeak
-
-        # Use the tagged version
-        docker-compose -f docker-compose.prod.yml up -d
-        ```
-
-        ---
-
-        For detailed deployment instructions, see the Deployment Guide in the repository.
 
 trigger:
   event: