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/importer/name.go

@@ -20,9 +20,8 @@ type Placement struct {
 	Recording string
 }
 
-// Plan names every file's destination under root the way Lidarr named the
-// library Minstrel took over (note #5527), so new arrivals sit beside what
-// is there:
+// Plan names every file's destination under root the way the library is
+// already named (note #5527), so new arrivals sit beside what is there:
 //
 //	{Artist}/{Album} ({Year})/{Artist} - {Album} - {track:00} - {Title}.ext
 //
@@ -83,11 +82,11 @@ const segmentMax = 200
 
 var illegal = strings.NewReplacer(
 	`\`, "+", "/", "+", "<", "", ">", "", "?", "!", "*", "-", "|", "", `"`, "",
-	// Lidarr's default "smart" colon: "Title: Subtitle" reads "Title - Subtitle".
+	// The "smart" colon: "Title: Subtitle" reads "Title - Subtitle".
 	": ", " - ", ":", "-",
 )
 
-// Segment makes a name safe as one path segment, the way Lidarr and Sonarr
+// Segment makes a name safe as one path segment, the way the *arr programs
 // clean file names: their illegal-character mapping, no leading or trailing
 // spaces or dots, at most segmentMax bytes, never "" or "..".
 func Segment(s string) string {