feat: a wanted list — follow artists on release-type profiles; requests and re-acquisition become wants (M502 #5520)

Minstrel keeps its own list of what it is to get, keyed by MusicBrainz
release group. A want comes from an approved request, a new release by a
followed artist, or an album whose files went missing, and is held once the
library has a full edition of it.

- Migration 0081: release_type_profiles (Standard seeded: Album, EP,
  Single, studio only), follows, follow_seen_groups and wants.
  lidarr_requests becomes requests with plain *_mbid columns; approved
  album and track requests move onto the wanted list, approved artist
  requests become follows, and the library's album artists start out
  followed. missing_reacquisitions and the retry settings go.
- internal/wanted: follows are checked against MusicBrainz discographies
  daily. The first check sets a baseline, and only releases after it are
  wanted unless the follow asked for what already exists. Profiles filter
  by primary and secondary type, so live recordings stay out unless a
  profile ticks Live.
- internal/requests (was lidarrrequests): approving puts the request on
  the wanted list, and an artist request can be approved on a chosen
  profile. A request completes when its want is held.
- The re-acquisition sweeper wants a missing album back instead of asking
  Lidarr; searching for it is the search schedule's (#5521).
- Web: an admin Wanted page (Wanted, Missing files, Held, Following), a
  follow control on artist pages, a release-type profiles card on
  Integrations, "Approve on a profile" on Requests, and want state on
  Missing files. The artist detail API returns the artist's MBID.
- Android: the request body sends artist_mbid, album_mbid and track_mbid.

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

internal/api/admin_reacquisition.go

@@ -13,18 +13,14 @@ import (
 // reacquisitionSettingsResp is the admin card's payload (milestone #290).
 //
 // Carries more than the stored settings: [UnnameableAlbums] is the count of
-// albums with missing files that can never be auto-requested because neither
-// they nor their artist has an MBID. The card states that number rather than
-// leaving the operator to wonder why some rows never get a request — a
-// feature that silently does nothing for part of its input reads as broken.
+// albums with missing files that can never be wanted automatically because
+// neither they nor their artist has an MBID. The card states that number
+// rather than leaving the operator to wonder why some rows never get wanted —
+// a feature that silently does nothing for part of its input reads as broken.
 type reacquisitionSettingsResp struct {
-	Enabled          bool  `json:"enabled"`
-	GraceHours       int32 `json:"grace_hours"`
-	BackoffBaseHours int32 `json:"backoff_base_hours"`
-	BackoffMaxHours  int32 `json:"backoff_max_hours"`
-	MaxAttempts      int32 `json:"max_attempts"`
-	MaxPerPass       int32 `json:"max_per_pass"`
-	AutoApprove      bool  `json:"auto_approve"`
+	Enabled    bool  `json:"enabled"`
+	GraceHours int32 `json:"grace_hours"`
+	MaxPerPass int32 `json:"max_per_pass"`
 
 	UnnameableAlbums int64 `json:"unnameable_albums"`
 }
@@ -42,13 +38,9 @@ func (h *handlers) handleUpdateReacquisitionSettings(w http.ResponseWriter, r *h
 		return
 	}
 	_, err := h.reacqSettings.Set(r.Context(), reacquisition.Settings{
-		Enabled:          req.Enabled,
-		GraceHours:       req.GraceHours,
-		BackoffBaseHours: req.BackoffBaseHours,
-		BackoffMaxHours:  req.BackoffMaxHours,
-		MaxAttempts:      req.MaxAttempts,
-		MaxPerPass:       req.MaxPerPass,
-		AutoApprove:      req.AutoApprove,
+		Enabled:    req.Enabled,
+		GraceHours: req.GraceHours,
+		MaxPerPass: req.MaxPerPass,
 	})
 	if err != nil {
 		// The Go-side validation mirrors migration 0056's CHECKs so the
@@ -69,13 +61,9 @@ func (h *handlers) handleUpdateReacquisitionSettings(w http.ResponseWriter, r *h
 func (h *handlers) reacquisitionPayload(r *http.Request) reacquisitionSettingsResp {
 	cur := h.reacqSettings.Get()
 	out := reacquisitionSettingsResp{
-		Enabled:          cur.Enabled,
-		GraceHours:       cur.GraceHours,
-		BackoffBaseHours: cur.BackoffBaseHours,
-		BackoffMaxHours:  cur.BackoffMaxHours,
-		MaxAttempts:      cur.MaxAttempts,
-		MaxPerPass:       cur.MaxPerPass,
-		AutoApprove:      cur.AutoApprove,
+		Enabled:    cur.Enabled,
+		GraceHours: cur.GraceHours,
+		MaxPerPass: cur.MaxPerPass,
 	}
 	// Best-effort: the settings are the point of this endpoint, and failing
 	// the whole card because a count query hiccuped would be the wrong trade.