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/playlists/service_test.go

@@ -459,7 +459,7 @@ func TestSnapshotPersistsAfterUpstreamTrackDelete(t *testing.T) {
 	pl, _ := svc.Create(context.Background(), user.ID, "Test", "", false)
 	_ = svc.AppendTracks(context.Background(), user.ID, pl.ID, []pgtype.UUID{tk.ID})
 
-	// Delete the track row directly (simulating Lidarr re-import / file removal).
+	// Delete the track row directly (simulating a re-import / file removal).
 	if _, err := pool.Exec(context.Background(), `DELETE FROM tracks WHERE id = $1`, tk.ID); err != nil {
 		t.Fatalf("delete track: %v", err)
 	}

internal/playlists/system_test.go

@@ -42,11 +42,11 @@ func seedPlayEvent(t *testing.T, pool *pgxpool.Pool, userID, trackID pgtype.UUID
 	}
 }
 
-// seedQuarantine inserts a lidarr_quarantine row for (user, track).
+// seedQuarantine inserts a quarantine row for (user, track).
 func seedQuarantine(t *testing.T, pool *pgxpool.Pool, userID, trackID pgtype.UUID) {
 	t.Helper()
 	_, err := pool.Exec(context.Background(), `
-		INSERT INTO lidarr_quarantine (user_id, track_id, reason)
+		INSERT INTO quarantine (user_id, track_id, reason)
 		VALUES ($1, $2, 'other')
 	`, userID, trackID)
 	if err != nil {