v0.1.3: Added NZB support, Prowlarr indexer, Docker PUID/PGID fixes
- Added SABnzbd and NZBGet download clients (experimental) — closes #8
- Added Prowlarr, NZBHydra2, and Newznab/Torznab indexer support — closes #6
- Added real search probe to indexer test_connection() with capabilities cache
- Added 7-day disk cache for indexer capability detection
- Fixed entrypoint.sh to handle pre-existing GID/UID gracefully — closes #5
- Fixed password length validation to return explicit "too long" error — closes #7
- Fixed ABS sync pagination and JSON serialization errors — closes #4
- Fixed Werkzeug RuntimeError allow_unsafe_werkzeug on startup — closes #1
- Fixed Docker volume path documentation (/import not /imports) — closes #2