- Fix endpoint path: users now provide full base URL (e.g. https://nas:5001/photo)
- Add OTP/2FA field for Synology login
- Add skip SSL verification option (DB column + checkbox UI)
- Add device ID (synology_did) column for session tracking
- Trigger in-app notification when Synology session is cleared
- Show disconnection banner in MemoriesPanel
- Add URL hint in provider settings
- Map Synology API error codes to human-readable messages
- Update i18n for all locales