- Document background polling and on-demand mode in README
- Add POLL_INTERVAL to all config examples (Docker, Compose, .env)
- New 'Background Polling' section in Features
- Sanitize leaked credentials in .env.example
- Fix seriesMap key (use Sonarr internal id, not tvdbId)
- Fix Sonarr tag resolution (use tag map like Radarr)
- Use sourceTitle for history record matching
- Fall back to embedded movie/series objects when API timeouts
- Add includeMovie/includeSeries params to queue/history API calls
- Add coverArt field to all download responses (TMDB poster URLs)
- Add cover art display to frontend download cards
- Fix user-summary route to use instance config and tag maps
