New repair job that scans each artist in the library, fetches their
full discography from metadata sources, and creates findings for any
tracks not already owned. Users review findings and click "Add to
Wishlist" to queue missing tracks for download.
Respects content filters (live/remix/acoustic/instrumental/compilation)
and release type filters (album/EP/single). Opt-in, disabled by default,
runs weekly, processes up to 50 artists per run with rate limiting.
