Highlight existing, seeding, and cross-seeded torrents in search results

[zotabee]

Is your feature request related to a problem? Please describe.

When performing a search across indexers in QUI, the results list returns all matching releases indiscriminately.

Currently, there is no visual indicator to quickly see if a release returned by an indexer is already present and active (seeding/downloading) in the connected client(s) (e.g., qBittorrent) or if it is already cross-seeded across other trackers. Users have to manually double-check their active torrent list to avoid redundant downloads.

Describe the solution you'd like

1. Visual State Indicators in Search Results:

   • Highlight or badge results that match torrents currently active/seeding in the client.
   • Display a distinct badge/tag (e.g., Seeding, In Client, or a checkmark icon) directly on the row.

2. Cross-Seed Detection / Indicators:

   • If a search result is an exact match / cross-seed candidate of an existing local torrent (same file tree / data hash), indicate this with a dedicated badge (e.g., Cross-seed match or Cross-seeding).

3. Filtering Options (Optional/Nice-to-have):

   • Add a quick filter toggle in the search interface (e.g., Hide Seeding or Show only unacquired) to quickly clean up the view.

Describe alternatives you've considered

• Manually copying the release title and searching the torrent list in QUI / qBittorrent before grabbing.

Additional context

• A subtle row color tint or a small colored tag would make scanning search results much faster and prevent duplicate grabbing across trackers.

[zotabee]

Slightly related discussion : "Show cross-seedable releases when selecting downloads" : #2349