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/api/file_remove_error_test.go

@@ -15,7 +15,7 @@ import (
 const removeTestPath = "/music/Moe Shop/WWW (2020)/01 - WWW.mp3"
 
 // removeFailure builds the error a delete service returns when the file would
-// not go, wrapped the way lidarrquarantine.DeleteFile and tracks.RemoveTrack
+// not go, wrapped the way quarantine.DeleteFile and tracks.RemoveTrack
 // wrap it — the mapping has to see through that.
 func removeFailure(errno syscall.Errno) error {
 	return fmt.Errorf("delete file: %w", &library.FileRemoveError{