feat: search and grab — music release names, a quality ladder, a paced search schedule and one live grab per want (M502 #5521)

- internal/release: reads a release name (format, bitrate, bit depth and
  sample rate, source, year, video, discography) and judges it against the
  album wanted: the artist and title must be in it; video rips,
  discographies, other versions (drumless, instrumental, karaoke, remix,
  live unless the album is live…) and singles or EPs for an album are
  refused. Quality tiers on Lidarr's ladder; a .torrent's file list is read
  for format, video files and a track count short of the album.
- internal/acquire: fan-out across every search source with a narrowed
  search kept, a process-wide pacer per source, every candidate judged and
  kept with its reasons, and the grab: one live grab per want, tie-broken
  (a person's grab beats the schedule's; a better release replaces a worse
  one unless it is nearly done). Each download lands in its own folder
  under the client's downloads folder.
- internal/wanted: the search schedule, every ten minutes, never-searched
  first, then requests, missing files and followed artists, taking the
  best release when auto-grab is on (the default).
- Migration 0082: acquisition_settings (auto-grab, interval, allowed
  qualities seeded from Lidarr's "Any"), want search columns,
  want_candidates, grabs, release_blocks.
- Web: the Wanted page shows each want's last search, a Search button and
  every release found with its verdict (Grab, Grab anyway, Never this one,
  Allow again). Integrations gains "Searching and grabbing".

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/src/lib/api/queries.ts

@@ -45,6 +45,9 @@ export const qk = {
   adminFollows:          () => ['adminFollows'] as const,
   adminFollow:           (artistMbid: string) => ['adminFollow', artistMbid] as const,
   releaseProfiles:       () => ['releaseProfiles'] as const,
+  // Search and grab (M502 #5521).
+  wantCandidates:        (wantId: string) => ['wantCandidates', wantId] as const,
+  searchSettings:        () => ['searchSettings'] as const,
   myQuarantine:           ()              => ['myQuarantine'] as const,
   adminQuarantine:        ()              => ['adminQuarantine'] as const,
   adminQuarantineActions: (limit?: number) =>