Merge branch 'main' into copilot/fix-mailbox-parameter-editing

docs/TODO.md

@@ -17,6 +17,7 @@ Comprehensive task breakdown for repository improvements and production readines
 - [ ] Enable rate limiting per user/tier
 - [x] Fix bare exception handlers throughout codebase
 - [x] Update datetime usage to timezone-aware (`DateTime(timezone=True)` columns and `lambda: datetime.now(timezone.utc)` defaults; fixes `DBAPIError` from asyncpg on timezone-naive columns)
+- [x] Fix `Exception terminating connection` in Celery workers: call `await engine.dispose()` inside task coroutine so pooled asyncpg connections are closed before the event loop is torn down
 - [ ] Validate redirect_uri to prevent open redirect vulnerabilities
 - [ ] Add per-user random salt for encryption (currently deterministic)
 
@@ -185,6 +186,7 @@ Comprehensive task breakdown for repository improvements and production readines
 - [x] Gmail API one-click OAuth grant flow with token refresh and revocation handling
 - [x] Unified Google OAuth flow: sign-in requests all Gmail scopes; single `/auth/callback` redirect URI needed in Google Console
 - [x] Message deduplication (POP3 UIDL + IMAP \Seen flag + DB tracking)
+- [x] **Debug email**: "Send Debug Email" button in Settings injects a test message (from christian@docuelevate.org, dated today, labelled `test` + `imported`, placed in inbox) to verify end-to-end Gmail API delivery
 - [ ] Implement GDPR data export endpoint
 - [ ] Complete notification service integration (Apprise)
 - [ ] Add advanced email filtering