- Add app/utils/ocr_language_manager.py: detects tessdata dir, downloads
missing .traineddata files via wget/curl from tessdata_fast GitHub repo,
pre-downloads EasyOCR models, exposes async background-thread helper
- TesseractOCRProvider.process() calls ensure_tesseract_languages() before
running pytesseract; raises clear error if languages remain unavailable
- EasyOCRProvider.process() logs informational message when models download
- app/main.py: calls ensure_ocr_languages_async() at startup
- app/utils/settings_sync.py: triggers language re-check after every
settings reload so UI changes take effect without container restart
- app/api/settings.py: adds POST /api/settings/install-ocr-languages
endpoint for on-demand language installation from the admin UI
- Dockerfile: adds wget for runtime tessdata downloads
- docs/ConfigurationGuide.md: documents automatic language download
- tests/test_ocr_language_manager.py: 29 unit tests
Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
A) Per-option Save Button
- Add per-setting Save button in settings.html (visible only when value changed)
- Button calls POST /api/settings/{key} directly; existing bulk Save retained
- Add Audit Log link in settings page header
B) Immediate Worker Sync
- New app/utils/settings_sync.py with notify_settings_updated() (Redis version key)
and register_settings_reload_signal() (Celery task_prerun handler)
- Register signal in celery_worker.py at startup
- All API write paths call notify_settings_updated() after successful saves
C) Audit Log
- Add SettingsAuditLog model (key, old_value, new_value, changed_by, changed_at, action)
- save_setting_to_db / delete_setting_from_db accept changed_by and write audit entries
- New get_audit_log() service function (masks sensitive values)
- New GET /api/settings/audit-log endpoint (admin-only)
- New GET /admin/settings/audit-log view + audit_log.html template
- Visible to all admins (per clarified requirement)
D) Config Rollback / History
- New get_setting_history() and rollback_setting() service functions
- New GET /api/settings/{key}/history endpoint
- New POST /api/settings/{key}/rollback/{history_id} endpoint
- Rollback buttons in audit_log.html with confirmation dialog
- Tests: 25 new tests covering audit log, rollback, worker sync helpers, and API endpoints
Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>