Allow switching category automatically to make torrents linked

[StirlingMouse]

Summary by CodeRabbit

• New Features

  • Auto-adjust qBittorrent categories for ignored torrents; new cover redirect endpoint; server-side pagination for search, lists, and selected torrents; MaM metadata provider and preview/apply flow; revamped metadata edit UI and torrent detail sidebar/actions.

• Refactor

  • Routing and metadata access updated; many UI components reorganized for clearer rendering and pagination.

• Style

  • New/external stylesheet and numerous UI layout/visual improvements (details, pills, icons, comma-separated lists).

• Tests

  • Added unit and e2e tests covering metadata, mapping, pagination, and UI flows.