Send Prowlarr search results directly to qBittorrent from the modal.
Backend authenticates via SID cookie (login + add torrent endpoints).
- Backend: qbittorrent module with add and test endpoints
- Migration: add qbittorrent settings (url, username, password)
- Settings UI: qBittorrent config card with test connection
- ProwlarrSearchModal: send-to-qBittorrent button per result row
with spinner/checkmark state progression
- Button only shown when qBittorrent is configured
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
