- Separated logo upload form from main settings form (fixes nested forms)
- Excluded /uploads/ from ServiceWorker cache (fixes logo not showing)
- Added cache busting to logo URLs
- Enhanced UI with prominent logo display and preview
- Added error handling and logging
- Created cache clearing utility at /admin/clear-cache
- Added 18 comprehensive tests
- Created troubleshooting documentation
Fixes: Logo not visible after upload, settings form not saving