chore: bump to v1.3.0; update CHANGELOG, README, ARCHITECTURE docs

README.md

@@ -9,6 +9,7 @@
 sofarr connects to your media stack and shows you a personalized view of:
 - **Active Downloads** - See what's currently downloading from Usenet (SABnzbd) and BitTorrent (qBittorrent)
 - **Progress Tracking** - Real-time progress bars with speed, ETA, and completion estimates
+- **Recently Completed** - History tab showing imported and failed downloads from Sonarr/Radarr with deduplication and upgrade-awareness
 - **User Matching** - Downloads are matched to you based on tags in Sonarr/Radarr
 - **Multi-Instance Support** - Connect to multiple instances of each service
 
@@ -279,6 +280,10 @@ sofarr polls all configured services in the background and caches the results. D
 - `GET /api/dashboard/user-summary` — Per-user download counts (admin)
 - `GET /api/dashboard/status` — Server / polling / cache status (admin)
 - `GET /api/dashboard/cover-art` — Proxied cover art image
+- `POST /api/dashboard/blocklist-search` — Blocklist a release and trigger a new search (admin)
+
+### History
+- `GET /api/history/recent` — Recently completed downloads from Sonarr/Radarr history
 
 ### Service APIs (proxy to your services)
 - `GET /api/sabnzbd/*` — SABnzbd API proxy
@@ -323,7 +328,7 @@ npm run test:coverage   # with V8 coverage report (outputs to coverage/)
 npm run test:ui         # interactive Vitest UI
 ```
 
-115 tests across 8 test files covering the security-critical paths: auth middleware, CSRF protection, secret sanitization, config parsing, token store, and qBittorrent utilities. See [`tests/README.md`](tests/README.md) for design decisions and coverage targets.
+145 tests across 10 test files covering the security-critical paths: auth middleware, CSRF protection, secret sanitization, config parsing, token store, qBittorrent utilities, and history deduplication/classification. See [`tests/README.md`](tests/README.md) for design decisions and coverage targets.
 
 ## Development