feat: Minstrel no longer talks to Lidarr: its connection, Delete via Lidarr and the unmonitor options are gone, and the track reports are plain quarantine (M502 #5525)

Migration 0091 drops lidarr_config and renames the quarantine tables, types,
indexes and the history column off the Lidarr name. The Integrations Lidarr
card, the Reports "Delete via Lidarr" action, the merge and remove-track
unmonitor options, the Lidarr audit actions and error codes go, on the
server, web and Android. The README describes acquisition as it is now.

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

web/csp.go

@@ -26,8 +26,8 @@ var srcAttrRe = regexp.MustCompile(`(?i)\bsrc\s*=`)
 // The rest:
 //   - style-src allows inline styles: Svelte transitions and style:
 //     directives write them, and inline style is not a script vector.
-//   - img-src admits https:/http: because Lidarr suggestion art is a remote
-//     poster URL. Images cannot run code.
+//   - img-src admits https:/http: because catalogue search art is a remote
+//     URL. Images cannot run code.
 //   - media-src/connect-src stay on our own origin: streams, the API and the
 //     SSE stream are all same-origin. blob: covers Web Audio and object URLs.
 func contentSecurityPolicy(indexHTML []byte) string {