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>

internal/library/duplicate_resolve_test.go

@@ -93,9 +93,8 @@ func autoMergeAudit(t *testing.T, pool *pgxpool.Pool, groupID pgtype.UUID) (n in
 }
 
 // One album holding a song twice: the extra copy goes, the copy whose name and
-// tags fit the album stays, and the merge is recorded as the resolver's. No
-// Lidarr is asked (M502 #5517): Minstrel is the only program writing the
-// library.
+// tags fit the album stays, and the merge is recorded as the resolver's
+// (M502 #5517): Minstrel is the only program writing the library.
 func TestResolveDuplicates_MergesASameReleaseCopy_Integration(t *testing.T) {
 	f := newResolveFixture(t)
 	res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", true)
@@ -192,8 +191,7 @@ func newCrossReleaseRipFixture(t *testing.T) crossReleaseRipFixture {
 }
 
 // A video rip on one release with the clean copy on another: the rip is no
-// release's copy, so it goes and the album cut stays (#5439, now without
-// Lidarr).
+// release's copy, so it goes and the album cut stays (#5439).
 func TestResolveDuplicates_MergesARipAcrossReleases_Integration(t *testing.T) {
 	f := newCrossReleaseRipFixture(t)
 	res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", true)