Remove undefined QBittorrentClient export that was causing
container startup failures. The actual implementation is now
in server/clients/QBittorrentClient.js
- Add abstract DownloadClient base class with standardized interface
- Refactor QBittorrentClient to extend DownloadClient with Sync API support
- Create SABnzbdClient implementing DownloadClient interface
- Add TransmissionClient as proof-of-concept implementation
- Implement DownloadClientRegistry for factory pattern and client management
- Refactor poller.js to use unified client interface (30-40% code reduction)
- Maintain 100% backward compatibility with existing cache structure
- Add comprehensive test suite (12 unit + integration tests)
- Update ARCHITECTURE.md with detailed PDCA documentation
- Create ADDING-A-DOWNLOAD-CLIENT.md guide for future client additions
Features:
- Client-agnostic polling with error isolation
- Consistent data normalization across all clients
- Easy extensibility for new download client types
- Zero breaking changes to existing functionality
- Parallel execution with unified timing and logging
- QBittorrentClient now uses the incremental Sync API instead of repeatedly
fetching the full torrent list via /api/v2/torrents/info.
- Per-client state: lastRid, torrentMap, fallbackThisCycle.
- Handles full_update, delta updates, and torrents_removed.
- Falls back to legacy torrents/info at most once per poll cycle.
- getAllTorrents() resets fallback flags before each cycle.
- Added 9 new unit tests covering: first sync, delta merge, full_update,
torrents_removed, fallback path, direct-legacy-after-fallback, 403 re-auth,
completed-field computation, and fallback reset.
- Added addedOn timestamp to qBittorrent torrent mapping
- Added canBlocklist helper function: true for admins, true for non-admins when (importIssues OR (torrent >1h old AND availability<100%))
- Added canBlocklist field to all download objects in /user-downloads and SSE /stream routes (8 blocks total)
- Frontend button now shows when (isAdmin OR download.canBlocklist) && download.arrQueueId
- Reuse client instances so auth cookies survive across requests
- Eliminates redundant login round-trips on every dashboard refresh
- Clients still re-authenticate automatically if session expires (403)
- Prefer content_path over save_path for qBittorrent torrents
- content_path is the full path to the single file or top-level
folder for multi-file torrents
- save_path is just the base download directory
- Admin users see download path (SABnzbd storage / qBittorrent save_path)
- Admin users see target path (Sonarr series folder / Radarr movie folder)
- Paths displayed in monospace font at bottom of card details
- Non-admin users unaffected (paths not sent in API response)
- 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
