feat: duplicates resolve themselves without Lidarr (M502 #5517)

Lidarr is off, and with it the resolver had stopped merging: it only
merged when Lidarr had said which copies it mapped. Minstrel is now the
only program writing the library, so the rule is about the copies:

- A song held twice on one album: the extra copies merge into the one
  whose tags fit best (then lossless, larger, older).
- Across releases or under another title: when every copy but one is a
  video rip (held back, or named like one and not marked fine), the rips
  merge into the one that is not.
- Clean copies on different releases are linked as one song, as before.
- Anything else waits for the operator.

Gone with Lidarr: release switches and their settle window, the
unmapped-file read, the rip search, the merge guard and its 409/503,
lidarr.Client's release methods, and duplicate_group_members.lidarr_state
(migration 0078). The duplicates page drops the per-copy Lidarr badge
and the blocked-merge notice; past release changes stay in its history.

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

cmd/minstrel/main.go

@@ -325,18 +325,12 @@ func run() error {
 	library.SetNotifier(notifier)
 	go lidarrReconciler.Run(ctx)
 
-	// Duplicate resolver (M498): classifies the sweep's groups and, with the
-	// operator's auto-resolve on, merges copies Lidarr does not map and moves a
-	// Lidarr release that lists songs twice. Started after SetNotifier so its
-	// summaries reach admins. See internal/library/duplicate_resolve.go.
-	resolverLidarr := func() library.LidarrLibrary {
-		if c := lidarrClientFn(); c != nil {
-			return c
-		}
-		return nil // a nil *lidarr.Client must not become a non-nil interface
-	}
+	// Duplicate resolver (M498, M502): classifies the sweep's groups and, with
+	// the operator's auto-resolve on, merges the copies that are safe to merge.
+	// Started after SetNotifier so its summaries reach admins. See
+	// internal/library/duplicate_resolve.go.
 	go library.NewDuplicateResolveWorker(pool, logger.With("component", "duplicate_resolve"),
-		cfg.Storage.DataDir, fpSettings, resolverLidarr).Run(ctx)
+		cfg.Storage.DataDir, fpSettings).Run(ctx)
 
 	// Missing-file re-acquisition (milestone #290). Turns albums whose files
 	// have been gone longer than the grace window into Lidarr requests, on an

internal/api/admin_duplicates.go

@@ -14,7 +14,6 @@ import (
 	"git.fabledsword.com/bvandeusen/minstrel/internal/audit"
 	"git.fabledsword.com/bvandeusen/minstrel/internal/db/dbq"
 	"git.fabledsword.com/bvandeusen/minstrel/internal/library"
-	"git.fabledsword.com/bvandeusen/minstrel/internal/tracks"
 )
 
 // duplicateMemberView is one copy in a proposed duplicate group. LikeCount and
@@ -33,12 +32,8 @@ type duplicateMemberView struct {
 	AddedAt     string `json:"added_at"`
 	LikeCount   int64  `json:"like_count"`
 	PlayCount   int64  `json:"play_count"`
-	// LidarrState is Lidarr's view of the file as of the resolver's last pass
-	// (M498): "tracked" (mapped to a track, so it cannot be removed without
-	// Lidarr downloading it again), "unmapped", or null when not asked.
-	LidarrState *string `json:"lidarr_state"`
-	DiscNumber  *int32  `json:"disc_number"`
-	TrackNumber *int32  `json:"track_number"`
+	DiscNumber  *int32 `json:"disc_number"`
+	TrackNumber *int32 `json:"track_number"`
 }
 
 // duplicateGroupView is one proposal. SurvivorTrackID and SurvivorReason are
@@ -291,14 +286,12 @@ func foldDuplicateGroups(rows []dbq.ListPendingDuplicateGroupMembersRow) []dupli
 			AddedAt:     formatTimestamp(row.AddedAt),
 			LikeCount:   row.LikeCount,
 			PlayCount:   row.PlayCount,
-			LidarrState: row.LidarrState,
 			DiscNumber:  row.DiscNumber,
 			TrackNumber: row.TrackNumber,
 		})
 		candidates[n] = append(candidates[n], library.SurvivorCandidate{
 			TrackID: trackID, FileFormat: row.FileFormat, FileSize: row.FileSize, AddedAt: row.AddedAt.Time,
-			LidarrTracked: row.LidarrState != nil && *row.LidarrState == "tracked",
-			TagFit:        library.TagFitScore(row.TrackNumber != nil, row.PositionClash, row.FilePath, row.HasMbid),
+			TagFit: library.TagFitScore(row.TrackNumber != nil, row.PositionClash, row.FilePath, row.HasMbid),
 		})
 	}
 	for i := range groups {
@@ -398,10 +391,6 @@ const mergeRequestBodyLimit = 1 << 16
 // Errors:
 //   - 409 library_not_writable / 500 file_delete_failed when a file could not be
 //     removed — nothing was changed (fileRemoveAPIError)
-//   - 409 copy_tracked_by_lidarr when a copy to remove is one Lidarr maps to a
-//     track: removing it would make Lidarr download it again (M498)
-//   - 503 lidarr_unavailable when Lidarr is on but did not answer, so that
-//     cannot be checked
 //   - 404 duplicate_group_not_pending when the group was already resolved
 //   - 400 survivor_not_in_group, invalid_id, invalid_body
 func (h *handlers) handleMergeDuplicateGroup(w http.ResponseWriter, r *http.Request) {
@@ -439,11 +428,6 @@ func (h *handlers) handleMergeDuplicateGroup(w http.ResponseWriter, r *http.Requ
 			writeAdminJSONErr(w, http.StatusNotFound, "duplicate_group_not_pending")
 		case errors.Is(err, library.ErrSurvivorNotInGroup):
 			writeAdminJSONErr(w, http.StatusBadRequest, "survivor_not_in_group")
-		case errors.Is(err, library.ErrCopyTrackedByLidarr):
-			writeAdminJSONErr(w, http.StatusConflict, "copy_tracked_by_lidarr")
-		case errors.Is(err, tracks.ErrLidarrUnavailable):
-			h.logger.Warn("admin: merge duplicate group: lidarr unavailable", "group_id", uuidToString(groupID), "err", err)
-			writeAdminJSONErr(w, http.StatusServiceUnavailable, "lidarr_unavailable")
 		default:
 			h.logger.Error("admin: merge duplicate group", "group_id", uuidToString(groupID), "err", err)
 			writeAdminJSONErr(w, http.StatusInternalServerError, "server_error")

internal/api/admin_duplicates_test.go

@@ -65,27 +65,26 @@ func TestFoldDuplicateGroups(t *testing.T) {
 }
 
 // M498: the proposal shown beside a group follows the resolver's rule. The copy
-// Lidarr tracks is proposed even when the other is lossless, because removing
-// the tracked one would make Lidarr download it again.
-func TestFoldDuplicateGroups_ProposesTheCopyLidarrTracks(t *testing.T) {
+// whose tags fit the album is proposed even when the other is lossless.
+func TestFoldDuplicateGroups_ProposesTheCopyWhoseTagsFit(t *testing.T) {
 	at := time.Date(2025, 1, 1, 0, 0, 0, 0, time.UTC)
-	tracked, unmapped := "tracked", "unmapped"
 	class := "same_release"
+	three := int32(3)
 	rows := []dbq.ListPendingDuplicateGroupMembersRow{
 		{GroupID: dupUUID(3), Tier: "acoustic", DetectedAt: dupTS(at), TrackID: dupUUID(30), Class: &class,
-			Title: "Song", FileFormat: "flac", FileSize: 30_000_000, AddedAt: dupTS(at), LidarrState: &unmapped},
+			Title: "Song", FileFormat: "flac", FileSize: 30_000_000, AddedAt: dupTS(at)},
 		{GroupID: dupUUID(3), Tier: "acoustic", DetectedAt: dupTS(at), TrackID: dupUUID(31), Class: &class,
-			Title: "Song", FileFormat: "mp3", FileSize: 9_000_000, AddedAt: dupTS(at), LidarrState: &tracked},
+			Title: "Song", FileFormat: "mp3", FileSize: 9_000_000, AddedAt: dupTS(at), TrackNumber: &three, HasMbid: true},
 	}
 	got := foldDuplicateGroups(rows)
 	if len(got) != 1 {
 		t.Fatalf("folded %d groups, want 1", len(got))
 	}
 	g := got[0]
-	if g.SurvivorTrackID != uuidToString(dupUUID(31)) || g.SurvivorReason != "the copy Lidarr tracks" {
-		t.Errorf("survivor = (%s, %q), want the tracked mp3", g.SurvivorTrackID, g.SurvivorReason)
+	if g.SurvivorTrackID != uuidToString(dupUUID(31)) || g.SurvivorReason != "tags fit the album" {
+		t.Errorf("survivor = (%s, %q), want the tagged mp3", g.SurvivorTrackID, g.SurvivorReason)
 	}
-	if g.Class == nil || *g.Class != "same_release" || g.Members[1].LidarrState == nil || *g.Members[1].LidarrState != "tracked" {
-		t.Errorf("class or lidarr state not carried: %+v", g)
+	if g.Class == nil || *g.Class != "same_release" {
+		t.Errorf("class not carried: %+v", g)
 	}
 }

internal/db/dbq/duplicates.sql.go

@@ -210,32 +210,6 @@ func (q *Queries) GetLatestFingerprintComputedAt(ctx context.Context) (pgtype.Ti
 	return latest, err
 }
 
-const listAlbumPresentTrackTitles = `-- name: ListAlbumPresentTrackTitles :many
-SELECT title FROM tracks WHERE album_id = $1 AND missing_since IS NULL
-`
-
-// The titles an album has on disk, for choosing the Lidarr release that covers
-// them best (M498 #5437).
-func (q *Queries) ListAlbumPresentTrackTitles(ctx context.Context, albumID pgtype.UUID) ([]string, error) {
-	rows, err := q.db.Query(ctx, listAlbumPresentTrackTitles, albumID)
-	if err != nil {
-		return nil, err
-	}
-	defer rows.Close()
-	var items []string
-	for rows.Next() {
-		var title string
-		if err := rows.Scan(&title); err != nil {
-			return nil, err
-		}
-		items = append(items, title)
-	}
-	if err := rows.Err(); err != nil {
-		return nil, err
-	}
-	return items, nil
-}
-
 const listDismissedDuplicateMemberSets = `-- name: ListDismissedDuplicateMemberSets :many
 SELECT g.id, array_agg(m.track_id ORDER BY m.track_id)::uuid[] AS track_ids
   FROM duplicate_groups g
@@ -343,6 +317,7 @@ SELECT g.id                  AS group_id,
        t.id                  AS track_id,
        t.album_id,
        t.title,
+       t.source_verdict,
        artists.name          AS artist_name,
        t.file_path,
        t.file_format,
@@ -351,8 +326,6 @@ SELECT g.id                  AS group_id,
        t.disc_number,
        t.track_number,
        (t.mbid IS NOT NULL)::boolean AS has_mbid,
-       albums.release_group_mbid,
-       albums.title          AS album_title,
        EXISTS (SELECT 1 FROM tracks o
                 WHERE o.album_id = t.album_id AND o.id <> t.id AND o.missing_since IS NULL
                   AND t.track_number IS NOT NULL
@@ -361,7 +334,6 @@ SELECT g.id                  AS group_id,
   FROM duplicate_groups g
   JOIN duplicate_group_members m ON m.group_id = g.id
   JOIN tracks t   ON t.id = m.track_id
-  JOIN albums     ON albums.id = t.album_id
   JOIN artists    ON artists.id = t.artist_id
  WHERE g.status = 'pending'
    AND t.missing_since IS NULL
@@ -369,29 +341,29 @@ SELECT g.id                  AS group_id,
 `
 
 type ListDuplicateGroupsForResolveRow struct {
-	GroupID          pgtype.UUID
-	Tier             string
-	TrackID          pgtype.UUID
-	AlbumID          pgtype.UUID
-	Title            string
-	ArtistName       string
-	FilePath         string
-	FileFormat       string
-	FileSize         int64
-	AddedAt          pgtype.Timestamptz
-	DiscNumber       *int32
-	TrackNumber      *int32
-	HasMbid          bool
-	ReleaseGroupMbid *string
-	AlbumTitle       string
-	PositionClash    bool
+	GroupID       pgtype.UUID
+	Tier          string
+	TrackID       pgtype.UUID
+	AlbumID       pgtype.UUID
+	Title         string
+	SourceVerdict *string
+	ArtistName    string
+	FilePath      string
+	FileFormat    string
+	FileSize      int64
+	AddedAt       pgtype.Timestamptz
+	DiscNumber    *int32
+	TrackNumber   *int32
+	HasMbid       bool
+	PositionClash bool
 }
 
 // Every pending group's present copies, for the resolver (M498 #5435): what it
 // needs to classify the group and to choose the copy to keep. One row per copy,
 // grouped by group. position_clash is true when another present track on the
 // same album claims the same disc and track number: tags that do not fit the
-// album, which the survivor rule weighs against a copy.
+// album, which the survivor rule weighs against a copy. source_verdict says
+// whether the copy is a video rip ('suspect') or one the operator kept ('fine').
 func (q *Queries) ListDuplicateGroupsForResolve(ctx context.Context) ([]ListDuplicateGroupsForResolveRow, error) {
 	rows, err := q.db.Query(ctx, listDuplicateGroupsForResolve)
 	if err != nil {
@@ -407,6 +379,7 @@ func (q *Queries) ListDuplicateGroupsForResolve(ctx context.Context) ([]ListDupl
 			&i.TrackID,
 			&i.AlbumID,
 			&i.Title,
+			&i.SourceVerdict,
 			&i.ArtistName,
 			&i.FilePath,
 			&i.FileFormat,
@@ -415,8 +388,6 @@ func (q *Queries) ListDuplicateGroupsForResolve(ctx context.Context) ([]ListDupl
 			&i.DiscNumber,
 			&i.TrackNumber,
 			&i.HasMbid,
-			&i.ReleaseGroupMbid,
-			&i.AlbumTitle,
 			&i.PositionClash,
 		); err != nil {
 			return nil, err
@@ -487,7 +458,6 @@ SELECT p.id                  AS group_id,
        p.detected_at,
        p.class,
        p.resolve_note,
-       m.lidarr_state,
        t.disc_number,
        t.track_number,
        (t.mbid IS NOT NULL)::boolean AS has_mbid,
@@ -529,7 +499,6 @@ type ListPendingDuplicateGroupMembersRow struct {
 	DetectedAt        pgtype.Timestamptz
 	Class             *string
 	ResolveNote       *string
-	LidarrState       *string
 	DiscNumber        *int32
 	TrackNumber       *int32
 	HasMbid           bool
@@ -552,8 +521,7 @@ type ListPendingDuplicateGroupMembersRow struct {
 // newest first, flattened to one row per member so the handler folds them
 // without a query per group. What each copy carries — likes and plays from
 // every user — is here because it is what the operator weighs when deciding
-// which copy to keep; Lidarr's view of it, because a copy Lidarr tracks cannot
-// be removed without Lidarr downloading it again.
+// which copy to keep.
 func (q *Queries) ListPendingDuplicateGroupMembers(ctx context.Context, arg ListPendingDuplicateGroupMembersParams) ([]ListPendingDuplicateGroupMembersRow, error) {
 	rows, err := q.db.Query(ctx, listPendingDuplicateGroupMembers, arg.View, arg.PageOffset, arg.PageLimit)
 	if err != nil {
@@ -570,7 +538,6 @@ func (q *Queries) ListPendingDuplicateGroupMembers(ctx context.Context, arg List
 			&i.DetectedAt,
 			&i.Class,
 			&i.ResolveNote,
-			&i.LidarrState,
 			&i.DiscNumber,
 			&i.TrackNumber,
 			&i.HasMbid,
@@ -632,30 +599,6 @@ func (q *Queries) SetDuplicateGroupClasses(ctx context.Context, arg SetDuplicate
 	return err
 }
 
-const setDuplicateMemberLidarrStates = `-- name: SetDuplicateMemberLidarrStates :exec
-UPDATE duplicate_group_members m
-   SET lidarr_state = NULLIF(v.state, '')
-  FROM (SELECT unnest($1::uuid[]) AS group_id,
-               unnest($2::uuid[]) AS track_id,
-               unnest($3::text[])    AS state) v
- WHERE m.group_id = v.group_id
-   AND m.track_id = v.track_id
-   AND m.lidarr_state IS DISTINCT FROM NULLIF(v.state, '')
-`
-
-type SetDuplicateMemberLidarrStatesParams struct {
-	GroupIds []pgtype.UUID
-	TrackIds []pgtype.UUID
-	States   []string
-}
-
-// Lidarr's view of each copy as of this pass; an empty state clears it (Lidarr
-// not consulted). Unchanged rows are left alone.
-func (q *Queries) SetDuplicateMemberLidarrStates(ctx context.Context, arg SetDuplicateMemberLidarrStatesParams) error {
-	_, err := q.db.Exec(ctx, setDuplicateMemberLidarrStates, arg.GroupIds, arg.TrackIds, arg.States)
-	return err
-}
-
 const startDuplicateSweep = `-- name: StartDuplicateSweep :one
 INSERT INTO duplicate_sweeps DEFAULT VALUES RETURNING id, started_at
 `

internal/db/dbq/models.go

@@ -337,9 +337,8 @@ type DuplicateGroup struct {
 }
 
 type DuplicateGroupMember struct {
-	GroupID     pgtype.UUID
-	TrackID     pgtype.UUID
-	LidarrState *string
+	GroupID pgtype.UUID
+	TrackID pgtype.UUID
 }
 
 type DuplicateSweep struct {

internal/db/dbq/tracks.sql.go

@@ -405,78 +405,6 @@ func (q *Queries) GetTracksByIDs(ctx context.Context, dollar_1 []pgtype.UUID) ([
 	return items, nil
 }
 
-const listAlbumsWithSoleCopyRips = `-- name: ListAlbumsWithSoleCopyRips :many
-SELECT a.id                  AS album_id,
-       a.release_group_mbid::text AS release_group_mbid,
-       a.title               AS album_title,
-       ar.name               AS artist_name,
-       count(*)::bigint      AS rips
-  FROM tracks t
-  JOIN albums  a  ON a.id  = t.album_id
-  JOIN artists ar ON ar.id = a.artist_id
- WHERE t.source_verdict = 'suspect'
-   AND t.missing_since IS NULL
-   AND a.release_group_mbid IS NOT NULL
-   AND NOT EXISTS (
-       SELECT 1 FROM tracks c
-        WHERE c.song_key = t.song_key AND c.id <> t.id
-          AND c.missing_since IS NULL AND c.source_verdict IS DISTINCT FROM 'suspect')
-   AND NOT EXISTS (
-       SELECT 1 FROM duplicate_group_members m
-         JOIN duplicate_groups g ON g.id = m.group_id AND g.status = 'pending'
-         JOIN duplicate_group_members m2 ON m2.group_id = g.id AND m2.track_id <> t.id
-         JOIN tracks c ON c.id = m2.track_id
-        WHERE m.track_id = t.id
-          AND c.missing_since IS NULL AND c.source_verdict IS DISTINCT FROM 'suspect')
-   AND NOT EXISTS (
-       SELECT 1 FROM audit_log l
-        WHERE l.action = 'lidarr_rip_search'
-          AND l.metadata->>'album_id' = a.id::text
-          AND l.created_at > now() - interval '7 days')
- GROUP BY a.id, a.release_group_mbid, a.title, ar.name
- ORDER BY count(*) DESC, a.id
- LIMIT $1
-`
-
-type ListAlbumsWithSoleCopyRipsRow struct {
-	AlbumID          pgtype.UUID
-	ReleaseGroupMbid string
-	AlbumTitle       string
-	ArtistName       string
-	Rips             int64
-}
-
-// Albums holding a held-back video rip that is the only copy of its song
-// (#5447): no present copy that is not a rip shares its song, and no pending
-// duplicate group pairs it with one. Lidarr counts such a track fulfilled, so
-// the resolver asks it to search the album for a better release. Albums
-// searched within the last week are left out, most rips first.
-func (q *Queries) ListAlbumsWithSoleCopyRips(ctx context.Context, pageLimit int32) ([]ListAlbumsWithSoleCopyRipsRow, error) {
-	rows, err := q.db.Query(ctx, listAlbumsWithSoleCopyRips, pageLimit)
-	if err != nil {
-		return nil, err
-	}
-	defer rows.Close()
-	var items []ListAlbumsWithSoleCopyRipsRow
-	for rows.Next() {
-		var i ListAlbumsWithSoleCopyRipsRow
-		if err := rows.Scan(
-			&i.AlbumID,
-			&i.ReleaseGroupMbid,
-			&i.AlbumTitle,
-			&i.ArtistName,
-			&i.Rips,
-		); err != nil {
-			return nil, err
-		}
-		items = append(items, i)
-	}
-	if err := rows.Err(); err != nil {
-		return nil, err
-	}
-	return items, nil
-}
-
 const listArtistTracksForUser = `-- name: ListArtistTracksForUser :many
 SELECT t.id, t.title, t.album_id, t.artist_id, t.track_number, t.disc_number, t.duration_ms, t.file_path, t.file_size, t.file_format, t.bitrate, t.mbid, t.genre, t.added_at, t.updated_at, t.tag_source, t.tag_sources_version, t.tag_read_version, t.missing_since, t.mbid_source, t.song_id, t.song_key, t.source_verdict, t.source_verdict_at,
        albums.title AS album_title,

internal/db/migrations/0078_drop_duplicate_lidarr_state.down.sql

@@ -0,0 +1,3 @@
+ALTER TABLE duplicate_group_members ADD COLUMN lidarr_state text;
+ALTER TABLE duplicate_group_members ADD CONSTRAINT duplicate_group_members_lidarr_state_check
+    CHECK (lidarr_state IN ('tracked', 'unmapped'));

internal/db/migrations/0078_drop_duplicate_lidarr_state.up.sql

@@ -0,0 +1,9 @@
+-- 0078_drop_duplicate_lidarr_state.up.sql — the duplicate resolver works
+-- without Lidarr (Scribe milestone #502, #5517).
+--
+-- 0075 recorded Lidarr's view of each duplicate copy (tracked or unmapped)
+-- because a copy Lidarr mapped could not be removed without Lidarr downloading
+-- it again. Lidarr is gone: Minstrel is the only program writing the library,
+-- so no copy is anyone else's to keep, and the column has nothing to say.
+ALTER TABLE duplicate_group_members DROP CONSTRAINT IF EXISTS duplicate_group_members_lidarr_state_check;
+ALTER TABLE duplicate_group_members DROP COLUMN IF EXISTS lidarr_state;

internal/db/queries/duplicates.sql

@@ -131,8 +131,7 @@ SELECT count(*)::bigint
 -- newest first, flattened to one row per member so the handler folds them
 -- without a query per group. What each copy carries — likes and plays from
 -- every user — is here because it is what the operator weighs when deciding
--- which copy to keep; Lidarr's view of it, because a copy Lidarr tracks cannot
--- be removed without Lidarr downloading it again.
+-- which copy to keep.
 WITH page AS (
     SELECT g.id, g.tier, g.worst_bit_error_rate, g.detected_at, g.class, g.resolve_note
       FROM duplicate_groups g
@@ -151,7 +150,6 @@ SELECT p.id                  AS group_id,
        p.detected_at,
        p.class,
        p.resolve_note,
-       m.lidarr_state,
        t.disc_number,
        t.track_number,
        (t.mbid IS NOT NULL)::boolean AS has_mbid,
@@ -201,12 +199,14 @@ SELECT count(*)::bigint
 -- needs to classify the group and to choose the copy to keep. One row per copy,
 -- grouped by group. position_clash is true when another present track on the
 -- same album claims the same disc and track number: tags that do not fit the
--- album, which the survivor rule weighs against a copy.
+-- album, which the survivor rule weighs against a copy. source_verdict says
+-- whether the copy is a video rip ('suspect') or one the operator kept ('fine').
 SELECT g.id                  AS group_id,
        g.tier,
        t.id                  AS track_id,
        t.album_id,
        t.title,
+       t.source_verdict,
        artists.name          AS artist_name,
        t.file_path,
        t.file_format,
@@ -215,8 +215,6 @@ SELECT g.id                  AS group_id,
        t.disc_number,
        t.track_number,
        (t.mbid IS NOT NULL)::boolean AS has_mbid,
-       albums.release_group_mbid,
-       albums.title          AS album_title,
        EXISTS (SELECT 1 FROM tracks o
                 WHERE o.album_id = t.album_id AND o.id <> t.id AND o.missing_since IS NULL
                   AND t.track_number IS NOT NULL
@@ -225,7 +223,6 @@ SELECT g.id                  AS group_id,
   FROM duplicate_groups g
   JOIN duplicate_group_members m ON m.group_id = g.id
   JOIN tracks t   ON t.id = m.track_id
-  JOIN albums     ON albums.id = t.album_id
   JOIN artists    ON artists.id = t.artist_id
  WHERE g.status = 'pending'
    AND t.missing_since IS NULL
@@ -244,22 +241,5 @@ UPDATE duplicate_groups g
    AND g.status = 'pending'
    AND (g.class IS DISTINCT FROM v.class OR g.resolve_note IS DISTINCT FROM NULLIF(v.note, ''));
 
--- name: SetDuplicateMemberLidarrStates :exec
--- Lidarr's view of each copy as of this pass; an empty state clears it (Lidarr
--- not consulted). Unchanged rows are left alone.
-UPDATE duplicate_group_members m
-   SET lidarr_state = NULLIF(v.state, '')
-  FROM (SELECT unnest(sqlc.arg(group_ids)::uuid[]) AS group_id,
-               unnest(sqlc.arg(track_ids)::uuid[]) AS track_id,
-               unnest(sqlc.arg(states)::text[])    AS state) v
- WHERE m.group_id = v.group_id
-   AND m.track_id = v.track_id
-   AND m.lidarr_state IS DISTINCT FROM NULLIF(v.state, '');
-
 -- name: MarkDuplicateGroupResolvedAutomatically :exec
 UPDATE duplicate_groups SET resolved_automatically = true WHERE id = sqlc.arg(id);
-
--- name: ListAlbumPresentTrackTitles :many
--- The titles an album has on disk, for choosing the Lidarr release that covers
--- them best (M498 #5437).
-SELECT title FROM tracks WHERE album_id = sqlc.arg(album_id) AND missing_since IS NULL;

internal/db/queries/tracks.sql

@@ -334,40 +334,3 @@ UPDATE tracks
    SET source_verdict = sqlc.arg(verdict)::text, source_verdict_at = now()
  WHERE id = sqlc.arg(id)
    AND source_verdict IS NOT NULL;
-
--- name: ListAlbumsWithSoleCopyRips :many
--- Albums holding a held-back video rip that is the only copy of its song
--- (#5447): no present copy that is not a rip shares its song, and no pending
--- duplicate group pairs it with one. Lidarr counts such a track fulfilled, so
--- the resolver asks it to search the album for a better release. Albums
--- searched within the last week are left out, most rips first.
-SELECT a.id                  AS album_id,
-       a.release_group_mbid::text AS release_group_mbid,
-       a.title               AS album_title,
-       ar.name               AS artist_name,
-       count(*)::bigint      AS rips
-  FROM tracks t
-  JOIN albums  a  ON a.id  = t.album_id
-  JOIN artists ar ON ar.id = a.artist_id
- WHERE t.source_verdict = 'suspect'
-   AND t.missing_since IS NULL
-   AND a.release_group_mbid IS NOT NULL
-   AND NOT EXISTS (
-       SELECT 1 FROM tracks c
-        WHERE c.song_key = t.song_key AND c.id <> t.id
-          AND c.missing_since IS NULL AND c.source_verdict IS DISTINCT FROM 'suspect')
-   AND NOT EXISTS (
-       SELECT 1 FROM duplicate_group_members m
-         JOIN duplicate_groups g ON g.id = m.group_id AND g.status = 'pending'
-         JOIN duplicate_group_members m2 ON m2.group_id = g.id AND m2.track_id <> t.id
-         JOIN tracks c ON c.id = m2.track_id
-        WHERE m.track_id = t.id
-          AND c.missing_since IS NULL AND c.source_verdict IS DISTINCT FROM 'suspect')
-   AND NOT EXISTS (
-       SELECT 1 FROM audit_log l
-        WHERE l.action = 'lidarr_rip_search'
-          AND l.metadata->>'album_id' = a.id::text
-          AND l.created_at > now() - interval '7 days')
- GROUP BY a.id, a.release_group_mbid, a.title, ar.name
- ORDER BY count(*) DESC, a.id
- LIMIT sqlc.arg(page_limit);

internal/library/duplicate_classify.go

@@ -13,11 +13,11 @@ import (
 // 498's body) splits into four shapes:
 //
 //   - same_release: every copy is on one album. An album holds a song once, so
-//     the extra copies are the ones to fold away — when Lidarr does not need
-//     them (the resolver checks).
+//     the extra copies are the ones to fold away.
 //   - cross_release: the copies are on different albums under one title. A
 //     single and the album it came from, a deluxe edition and the standard one:
-//     each copy fulfils its own release in Lidarr, so none is deleted.
+//     each copy belongs to its own release, so none is deleted (unless it is a
+//     video rip; the resolver decides).
 //   - mismatch: byte-identical audio on different albums under different
 //     titles. One file carries another song's tags — a wrong-file import.
 //   - review: anything else. The operator decides.
@@ -123,13 +123,6 @@ func MatchTitleKey(title, artist string) string {
 	return alnumKey(title)
 }
 
-// ReleaseTitleKey is the lighter comparison for asking whether one release
-// lists a song twice: case, "&" and punctuation only. Every word stays, so a
-// box set's "Song" and "Song (demo)" are two songs, as the release means them.
-func ReleaseTitleKey(title string) string {
-	return alnumKey(title)
-}
-
 // alnumKey lowercases, reads "&" as "and", and keeps only letters and digits.
 func alnumKey(s string) string {
 	s = strings.ReplaceAll(strings.ToLower(s), "&", " and ")

internal/library/duplicate_classify_test.go

@@ -59,13 +59,3 @@ func TestMatchTitleKey(t *testing.T) {
 		}
 	}
 }
-
-// The release check keeps every word: a box set's demo is its own song.
-func TestReleaseTitleKey(t *testing.T) {
-	if ReleaseTitleKey("Song (demo)") == ReleaseTitleKey("Song") {
-		t.Error("ReleaseTitleKey collapsed a demo into the song")
-	}
-	if ReleaseTitleKey("Hallelujah Money") != ReleaseTitleKey("hallelujah money!") {
-		t.Error("ReleaseTitleKey kept case or punctuation")
-	}
-}

internal/library/duplicate_merge.go

@@ -25,16 +25,6 @@ var ErrDuplicateGroupNotPending = errors.New("library: duplicate group is not pe
 // ErrSurvivorNotInGroup means the copy chosen to keep is not a member of the group.
 var ErrSurvivorNotInGroup = errors.New("library: survivor is not a member of the group")
 
-// ErrCopyTrackedByLidarr means a copy the merge would remove is one Lidarr maps
-// to a track of the release it monitors (M498). Removing it would open a hole
-// that Lidarr fills by downloading the song again, so the merge refuses and
-// changes nothing.
-var ErrCopyTrackedByLidarr = errors.New("library: a copy to remove is tracked by Lidarr")
-
-// RemovableFunc reports whether the file at filePath may be removed. A merge
-// asks it about every copy it would remove, before touching anything.
-type RemovableFunc func(filePath string) bool
-
 // MergedCopy is one copy a merge kept or removed.
 type MergedCopy struct {
 	TrackID   pgtype.UUID
@@ -85,17 +75,6 @@ type MergeResult struct {
 func MergeDuplicateGroup(
 	ctx context.Context, pool *pgxpool.Pool, logger *slog.Logger, dataDir string,
 	groupID, survivorID pgtype.UUID,
-) (MergeResult, error) {
-	return MergeDuplicateGroupGuarded(ctx, pool, logger, dataDir, groupID, survivorID, nil)
-}
-
-// MergeDuplicateGroupGuarded is MergeDuplicateGroup with a check on what it may
-// remove: when removable says no to any copy that would go, the merge returns
-// ErrCopyTrackedByLidarr (wrapped with the path) and changes nothing. A nil
-// removable allows every copy.
-func MergeDuplicateGroupGuarded(
-	ctx context.Context, pool *pgxpool.Pool, logger *slog.Logger, dataDir string,
-	groupID, survivorID pgtype.UUID, removable RemovableFunc,
 ) (MergeResult, error) {
 	if logger == nil {
 		logger = slog.Default()
@@ -130,13 +109,6 @@ func MergeDuplicateGroupGuarded(
 		return MergeResult{}, err
 	}
 
-	if removable != nil {
-		for _, l := range losers {
-			if !removable(l.FilePath) {
-				return MergeResult{}, fmt.Errorf("%w: %s", ErrCopyTrackedByLidarr, l.FilePath)
-			}
-		}
-	}
 	for _, l := range losers {
 		if err := removeTrackFileOnDisk(l.FilePath); err != nil {
 			return MergeResult{}, err

internal/library/duplicate_resolve.go

@@ -2,12 +2,9 @@ package library
 
 import (
 	"context"
-	"encoding/json"
 	"errors"
 	"fmt"
 	"log/slog"
-	"sort"
-	"strings"
 	"time"
 
 	"github.com/jackc/pgx/v5"
@@ -16,100 +13,46 @@ import (
 
 	"git.fabledsword.com/bvandeusen/minstrel/internal/audit"
 	"git.fabledsword.com/bvandeusen/minstrel/internal/db/dbq"
-	"git.fabledsword.com/bvandeusen/minstrel/internal/lidarr"
 	"git.fabledsword.com/bvandeusen/minstrel/internal/notifications"
 	syncpkg "git.fabledsword.com/bvandeusen/minstrel/internal/sync"
 )
 
-// Duplicate resolver (M498 #5435, #5437).
+// Duplicate resolver (M498 #5435, #5437; without Lidarr since M502 #5517).
 //
 // The sweep proposes duplicate groups; the resolver decides what each one is
-// and settles the ones that are safe to settle without asking. Safety is
-// Lidarr's to define: Lidarr maps one file to each track of the release it
-// monitors, and re-downloads any mapped file that disappears. So:
+// and settles the ones that are safe to settle without asking. Minstrel is the
+// only program writing the library, so no copy is kept because something else
+// depends on it. What decides is what the copies are:
 //
-//   - A copy Lidarr maps is never removed.
-//   - On one album, copies Lidarr does not map are merged into the copy it does
-//     (or, when it maps none, into the best by ProposeSurvivor).
-//   - When Lidarr maps every copy on one album, the release it monitors lists
-//     the song twice: the Humanz box set, 14 vinyl sides then the digital
-//     medium. The resolver moves Lidarr to a release of that album that lists
-//     each song once. Lidarr then rescans the folder, maps one copy and leaves
-//     the rest unmapped, and the next pass merges them.
-//
-// The release change has a fixed point (lesson #4183): it happens only while
-// the monitored release repeats a title, and the release it chooses repeats
-// none, so the next pass finds nothing to change.
-
-// LidarrLibrary is the part of Lidarr's API the resolver uses. *lidarr.Client
-// satisfies it.
-type LidarrLibrary interface {
-	ListUnmappedTrackFiles(ctx context.Context) ([]lidarr.TrackFile, error)
-	LookupAlbumByMBID(ctx context.Context, mbid string) (lidarr.LidarrAlbum, error)
-	ListAlbumTracks(ctx context.Context, albumID int) ([]lidarr.ReleaseTrack, error)
-	GetAlbumReleases(ctx context.Context, albumID int) ([]lidarr.AlbumRelease, error)
-	ListReleaseTracks(ctx context.Context, releaseID int) ([]lidarr.ReleaseTrack, error)
-	SetMonitoredRelease(ctx context.Context, albumID, releaseID int) error
-	SearchAlbums(ctx context.Context, albumIDs []int) error
-}
+//   - On one album, a song is held once: the extra copies are merged into the
+//     best by ProposeSurvivor.
+//   - Across releases, each copy belongs to its own release (a single and its
+//     album): nothing is removed, and the copies are linked as one song.
+//   - Except that a video rip is no release's copy. When every copy but one is
+//     a rip, across releases or under another title, the rips are merged into
+//     the one that is not.
+//   - Anything else waits for the operator.
 
 const (
 	// resolveMergeCap bounds the merges one pass makes. The first pass after
-	// deploy meets the whole backlog (433 groups measured on 2026-10-09); a
-	// cap spreads it over a few hours, each pass short.
+	// deploy meets the whole backlog; a cap spreads it over a few hours, each
+	// pass short.
 	resolveMergeCap = 200
-	// resolveReleaseCap bounds the Lidarr release changes one pass makes. Each
-	// makes Lidarr rescan an artist folder.
-	resolveReleaseCap = 10
-	// releaseChangeSettle is how long after a release change the resolver
-	// leaves that album's groups alone. Lidarr unmaps every file of the album
-	// and rescans; until the rescan lands, every copy reads as unmapped, and a
-	// merge then could remove the very file Lidarr is about to map.
-	releaseChangeSettle = 24 * time.Hour
 	// duplicateResolveTick is how often the worker runs a pass.
 	duplicateResolveTick = time.Hour
 )
 
-const (
-	lidarrStateTracked  = "tracked"
-	lidarrStateUnmapped = "unmapped"
-)
-
-// ReleaseChange is one Lidarr release the resolver switched.
-type ReleaseChange struct {
-	AlbumTitle string
-	ArtistName string
-	From, To   lidarr.AlbumRelease
-}
-
 // DuplicateResolveResult tallies one pass.
 type DuplicateResolveResult struct {
-	Groups          int
-	Classes         map[DuplicateClass]int
-	LidarrConsulted bool
-	Merged          int
-	MergeFailed     int
-	ReleaseChanges  []ReleaseChange
+	Groups      int
+	Classes     map[DuplicateClass]int
+	Merged      int
+	MergeFailed int
 	// SongsLinked counts cross-release groups newly linked as one song.
 	SongsLinked int
 	// HeldBack counts tracks newly held back from radio and the mixes as video
 	// rips; Released counts held-back tracks whose name no longer says so.
 	HeldBack, Released int64
-	// RipSearches counts albums Lidarr was asked to search for a better copy
-	// of a rip that has no clean copy (#5447).
-	RipSearches int
-}
-
-// LidarrPathKey is the part of a path Minstrel and Lidarr agree on: the last
-// three components (artist folder, album folder, file). Both see the library
-// under their own mount; on the operator's deploy both happen to say /music,
-// and the key keeps the match from depending on that.
-func LidarrPathKey(p string) string {
-	parts := strings.Split(strings.Trim(p, "/"), "/")
-	if len(parts) > 3 {
-		parts = parts[len(parts)-3:]
-	}
-	return strings.Join(parts, "/")
 }
 
 // resolveGroup is one pending group and its present copies.
@@ -119,53 +62,52 @@ type resolveGroup struct {
 	members []dbq.ListDuplicateGroupsForResolveRow
 	class   DuplicateClass
 	note    string
-	states  []string // per member: tracked, unmapped, or "" when Lidarr was not asked
 }
 
-// autoMergeable says whether the resolver may merge the group on its own: when
-// every copy it would remove is one Lidarr does not map (D-a rule 1). On one
-// album that is any group with at most one mapped copy. Across releases each
-// mapped copy fulfils its own release (D-b), so only a group with exactly one
-// mapped copy qualifies: the others fulfil nothing — a rip beside the clean
-// copy on another release, or a wrong-file import Lidarr holds unmapped
-// (#5439) — and the mapped copy is the clear one to keep.
-func autoMergeable(g *resolveGroup) bool {
+// isRip says whether a copy is a video rip: held back as one, or named like
+// one and not kept by the operator. The name is read as well as the verdict
+// because a pass reads the groups before it flags new rips.
+func isRip(m dbq.ListDuplicateGroupsForResolveRow) bool {
+	if m.SourceVerdict != nil {
+		return *m.SourceVerdict == "suspect"
+	}
+	return len(SourceMarkersFor(m.FilePath)) > 0
+}
+
+// lone returns the index of the group's only copy that is not a rip, or -1
+// when there is none or more than one.
+func (g *resolveGroup) lone() int {
+	at := -1
+	for i, m := range g.members {
+		if isRip(m) {
+			continue
+		}
+		if at >= 0 {
+			return -1
+		}
+		at = i
+	}
+	return at
+}
+
+// mergePlan says whether the resolver may merge the group on its own, and into
+// which copy (an index into members; -1 means ProposeSurvivor decides).
+func mergePlan(g *resolveGroup) (ok bool, survivor int) {
 	switch g.class {
 	case ClassSameRelease:
-		return g.tracked() <= 1
+		return true, -1
 	case ClassCrossRelease, ClassMismatch:
-		return g.tracked() == 1
-	default:
-		return false
-	}
-}
-
-// settling says whether any of the group's albums had its Lidarr release
-// changed recently, so Lidarr may still be remapping its files.
-func (g *resolveGroup) settling(albums map[string]bool) bool {
-	for _, m := range g.members {
-		if albums[syncpkg.FormatUUID(m.AlbumID)] {
-			return true
+		if i := g.lone(); i >= 0 {
+			return true, i
 		}
 	}
-	return false
+	return false, -1
 }
 
-func (g *resolveGroup) tracked() int {
-	n := 0
-	for _, s := range g.states {
-		if s == lidarrStateTracked {
-			n++
-		}
-	}
-	return n
-}
-
-// ResolveDuplicates runs one pass. lid is nil when Lidarr is disabled; act is
-// the operator's auto-resolve setting. Without Lidarr, or with act off, the
-// pass only classifies: nothing is removed when Lidarr cannot say what is safe.
+// ResolveDuplicates runs one pass. act is the operator's auto-resolve setting;
+// with it off, the pass only classifies.
 func ResolveDuplicates(
-	ctx context.Context, pool *pgxpool.Pool, logger *slog.Logger, dataDir string, lid LidarrLibrary, act bool,
+	ctx context.Context, pool *pgxpool.Pool, logger *slog.Logger, dataDir string, act bool,
 ) (DuplicateResolveResult, error) {
 	if logger == nil {
 		logger = slog.Default()
@@ -180,32 +122,10 @@ func ResolveDuplicates(
 	groups := foldResolveGroups(rows)
 	res.Groups = len(groups)
 
-	var unmapped map[string]bool
-	if lid != nil {
-		files, err := lid.ListUnmappedTrackFiles(ctx)
-		if err != nil {
-			logger.Warn("duplicate resolve: Lidarr's unmapped files unavailable; classifying only", "err", err)
-		} else {
-			unmapped = make(map[string]bool, len(files))
-			for _, f := range files {
-				unmapped[LidarrPathKey(f.Path)] = true
-			}
-			res.LidarrConsulted = true
-		}
-	}
-
 	for _, g := range groups {
 		cm := make([]ClassifyMember, len(g.members))
-		g.states = make([]string, len(g.members))
 		for i, m := range g.members {
 			cm[i] = ClassifyMember{AlbumID: syncpkg.FormatUUID(m.AlbumID), Title: m.Title, ArtistName: m.ArtistName}
-			if res.LidarrConsulted {
-				if unmapped[LidarrPathKey(m.FilePath)] {
-					g.states[i] = lidarrStateUnmapped
-				} else {
-					g.states[i] = lidarrStateTracked
-				}
-			}
 		}
 		g.class = ClassifyDuplicateGroup(g.tier, cm)
 		g.note = resolveNote(g)
@@ -219,31 +139,15 @@ func ResolveDuplicates(
 		return res, nil
 	}
 
-	// Holding rips back and linking songs remove nothing and need nothing from
-	// Lidarr.
 	if res.HeldBack, err = q.FlagSuspectSourceTracks(ctx, SuspectSourcePattern); err != nil {
 		return res, fmt.Errorf("hold back video rips: %w", err)
 	}
 	if res.Released, err = q.ClearStaleSuspectSourceTracks(ctx, SuspectSourcePattern); err != nil {
 		return res, fmt.Errorf("release renamed tracks: %w", err)
 	}
-	linked, err := linkCrossRelease(ctx, pool, logger, groups)
-	res.SongsLinked = linked
-	if err != nil {
-		return res, err
-	}
 
-	if !res.LidarrConsulted {
-		return res, nil
-	}
-
-	settling, err := recentlyChangedAlbums(ctx, q, time.Now())
-	if err != nil {
-		return res, err
-	}
-
-	// Merges first, on the state Lidarr reported at the start of the pass.
-	removable := func(p string) bool { return unmapped[LidarrPathKey(p)] }
+	// Merges before links, so a rip merged away is not linked first.
+	merged := map[pgtype.UUID]bool{}
 	for _, g := range groups {
 		if res.Merged >= resolveMergeCap {
 			break
@@ -251,35 +155,29 @@ func ResolveDuplicates(
 		if ctx.Err() != nil {
 			return res, ctx.Err()
 		}
-		if !autoMergeable(g) || g.settling(settling) {
+		ok, survivor := mergePlan(g)
+		if !ok {
 			continue
 		}
-		if err := autoMerge(ctx, pool, logger, dataDir, g, removable); err != nil {
+		if err := autoMerge(ctx, pool, logger, dataDir, g, survivor); err != nil {
 			res.MergeFailed++
 			logger.Warn("duplicate resolve: merge failed", "group_id", syncpkg.FormatUUID(g.id), "err", err)
 			continue
 		}
+		merged[g.id] = true
 		res.Merged++
 	}
 
-	// Then release changes, for albums where Lidarr maps every copy.
-	changes, err := changeRepeatingReleases(ctx, q, pool, logger, lid, groups, settling)
-	res.ReleaseChanges = changes
+	linked, err := linkCrossRelease(ctx, pool, logger, groups, merged)
+	res.SongsLinked = linked
 	if err != nil {
 		return res, err
 	}
 
-	// Last, rips with no clean copy anywhere: ask Lidarr for something better.
-	searched, err := searchSoleCopyRips(ctx, q, pool, logger, lid)
-	res.RipSearches = searched
-	if err != nil {
-		logger.Warn("duplicate resolve: rip search failed", "err", err)
-	}
-
-	if res.Merged > 0 || len(changes) > 0 {
+	if res.Merged > 0 {
 		notifyAdmins(ctx, notifications.KindDuplicatesResolved, notifications.Payload{
-			Count:  int64(res.Merged + len(changes)),
-			Detail: resolvedDetail(res.Merged, changes),
+			Count:  int64(res.Merged),
+			Detail: fmt.Sprintf("Merged %d duplicate %s.", res.Merged, pluralWord(res.Merged, "copy", "copies")),
 		})
 	}
 	return res, nil
@@ -287,13 +185,15 @@ func ResolveDuplicates(
 
 // linkCrossRelease links each cross-release group's copies as one song
 // (#5438): a like on one is a like on all, and the Liked list, shuffle and the
-// mixes count the song once. Linking an already-linked group changes nothing,
+// mixes count the song once. A group the pass merged has nothing left to link. Linking an already-linked group changes nothing,
 // so this runs every pass; likes are shared only when a link is new, since a
 // like made after it reaches every copy as it is made.
-func linkCrossRelease(ctx context.Context, pool *pgxpool.Pool, logger *slog.Logger, groups []*resolveGroup) (int, error) {
+func linkCrossRelease(
+	ctx context.Context, pool *pgxpool.Pool, logger *slog.Logger, groups []*resolveGroup, merged map[pgtype.UUID]bool,
+) (int, error) {
 	linked := 0
 	for _, g := range groups {
-		if g.class != ClassCrossRelease {
+		if g.class != ClassCrossRelease || merged[g.id] {
 			continue
 		}
 		if ctx.Err() != nil {
@@ -345,61 +245,6 @@ func linkSong(ctx context.Context, pool *pgxpool.Pool, ids []pgtype.UUID) (bool,
 	return true, tx.Commit(ctx)
 }
 
-// ripSearchCap bounds the albums one pass asks Lidarr to search, so the first
-// pass after deploy does not queue the whole backlog of rips at once.
-const ripSearchCap = 10
-
-// searchSoleCopyRips asks Lidarr to search each album holding a video rip that
-// is the only copy of its song (#5447, operator's choice: option 2). While
-// Lidarr maps the rip it counts the track fulfilled, so nothing else asks for
-// better. An album search grabs only when the quality profile allows an
-// upgrade, so this removes nothing and may change nothing: the rip stays held
-// back either way. An album is searched at most once a week (the query reads
-// the audit log), and an album Lidarr does not hold is skipped.
-func searchSoleCopyRips(
-	ctx context.Context, q *dbq.Queries, pool *pgxpool.Pool, logger *slog.Logger, lid LidarrLibrary,
-) (int, error) {
-	albums, err := q.ListAlbumsWithSoleCopyRips(ctx, ripSearchCap)
-	if err != nil {
-		return 0, fmt.Errorf("list albums with sole-copy rips: %w", err)
-	}
-	type found struct {
-		row      dbq.ListAlbumsWithSoleCopyRipsRow
-		lidarrID int
-	}
-	var targets []found
-	for _, a := range albums {
-		la, err := lid.LookupAlbumByMBID(ctx, a.ReleaseGroupMbid)
-		if errors.Is(err, lidarr.ErrNotFound) {
-			continue
-		}
-		if err != nil {
-			return 0, fmt.Errorf("look up %s: %w", a.ReleaseGroupMbid, err)
-		}
-		targets = append(targets, found{row: a, lidarrID: la.ID})
-	}
-	if len(targets) == 0 {
-		return 0, nil
-	}
-	ids := make([]int, len(targets))
-	for i, t := range targets {
-		ids[i] = t.lidarrID
-	}
-	if err := lid.SearchAlbums(ctx, ids); err != nil {
-		return 0, fmt.Errorf("search albums: %w", err)
-	}
-	for _, t := range targets {
-		audit.WriteOrLog(ctx, pool, logger, pgtype.UUID{}, pgtype.UUID{}, audit.ActionLidarrRipSearch, map[string]any{
-			"album_id":        syncpkg.FormatUUID(t.row.AlbumID),
-			"album_title":     t.row.AlbumTitle,
-			"artist_name":     t.row.ArtistName,
-			"lidarr_album_id": t.lidarrID,
-			"rips":            t.row.Rips,
-		})
-	}
-	return len(targets), nil
-}
-
 func foldResolveGroups(rows []dbq.ListDuplicateGroupsForResolveRow) []*resolveGroup {
 	var groups []*resolveGroup
 	for _, r := range rows {
@@ -419,16 +264,14 @@ func foldResolveGroups(rows []dbq.ListDuplicateGroupsForResolveRow) []*resolveGr
 	return out
 }
 
-// resolveNote is what the report says beside a group the resolver leaves for
-// the operator, when there is something to say.
+// resolveNote is what the report says beside a group, when there is something
+// to say.
 func resolveNote(g *resolveGroup) string {
 	switch g.class {
-	case ClassSameRelease:
-		if g.tracked() > 1 {
-			return "Lidarr tracks every copy as its own track, so removing one would make Lidarr download it again."
-		}
 	case ClassCrossRelease:
-		return "Each copy belongs to its own release, and Lidarr keeps each one. Nothing is removed; they count as one song."
+		if g.lone() < 0 {
+			return "Each copy belongs to its own release, so none is removed; they count as one song."
+		}
 	case ClassMismatch:
 		return "Identical audio filed under different titles: one file carries another song's tags."
 	}
@@ -437,16 +280,10 @@ func resolveNote(g *resolveGroup) string {
 
 func writeResolveVerdicts(ctx context.Context, q *dbq.Queries, groups []*resolveGroup) error {
 	classes := dbq.SetDuplicateGroupClassesParams{}
-	states := dbq.SetDuplicateMemberLidarrStatesParams{}
 	for _, g := range groups {
 		classes.GroupIds = append(classes.GroupIds, g.id)
 		classes.Classes = append(classes.Classes, string(g.class))
 		classes.Notes = append(classes.Notes, g.note)
-		for i, m := range g.members {
-			states.GroupIds = append(states.GroupIds, g.id)
-			states.TrackIds = append(states.TrackIds, m.TrackID)
-			states.States = append(states.States, g.states[i])
-		}
 	}
 	if len(classes.GroupIds) == 0 {
 		return nil
@@ -454,9 +291,6 @@ func writeResolveVerdicts(ctx context.Context, q *dbq.Queries, groups []*resolve
 	if err := q.SetDuplicateGroupClasses(ctx, classes); err != nil {
 		return fmt.Errorf("write duplicate classes: %w", err)
 	}
-	if err := q.SetDuplicateMemberLidarrStates(ctx, states); err != nil {
-		return fmt.Errorf("write lidarr states: %w", err)
-	}
 	return nil
 }
 
@@ -465,29 +299,31 @@ func survivorCandidates(g *resolveGroup) []SurvivorCandidate {
 	cands := make([]SurvivorCandidate, len(g.members))
 	for i, m := range g.members {
 		cands[i] = SurvivorCandidate{
-			TrackID:       syncpkg.FormatUUID(m.TrackID),
-			FileFormat:    m.FileFormat,
-			FileSize:      m.FileSize,
-			AddedAt:       m.AddedAt.Time,
-			LidarrTracked: g.states[i] == lidarrStateTracked,
-			TagFit:        TagFitScore(m.TrackNumber != nil, m.PositionClash, m.FilePath, m.HasMbid),
+			TrackID:    syncpkg.FormatUUID(m.TrackID),
+			FileFormat: m.FileFormat,
+			FileSize:   m.FileSize,
+			AddedAt:    m.AddedAt.Time,
+			TagFit:     TagFitScore(m.TrackNumber != nil, m.PositionClash, m.FilePath, m.HasMbid),
 		}
 	}
 	return cands
 }
 
-// autoMerge merges one group into the copy ProposeSurvivor picks, which is the
-// copy Lidarr tracks when there is one. removable is the guard: a copy Lidarr
-// maps can never be among those removed, whatever the survivor rule said.
+// autoMerge merges one group into the copy at index survivor, or the copy
+// ProposeSurvivor picks when survivor is -1, and records the merge as the
+// resolver's.
 func autoMerge(
-	ctx context.Context, pool *pgxpool.Pool, logger *slog.Logger, dataDir string, g *resolveGroup, removable RemovableFunc,
+	ctx context.Context, pool *pgxpool.Pool, logger *slog.Logger, dataDir string, g *resolveGroup, survivor int,
 ) error {
 	survivorKey, reason := ProposeSurvivor(survivorCandidates(g))
+	if survivor >= 0 {
+		survivorKey, reason = syncpkg.FormatUUID(g.members[survivor].TrackID), "the copy that is not a video rip"
+	}
 	var survivorID pgtype.UUID
 	if err := survivorID.Scan(survivorKey); err != nil {
 		return fmt.Errorf("parse survivor id: %w", err)
 	}
-	res, err := MergeDuplicateGroupGuarded(ctx, pool, logger, dataDir, g.id, survivorID, removable)
+	res, err := MergeDuplicateGroup(ctx, pool, logger, dataDir, g.id, survivorID)
 	if err != nil {
 		return err
 	}
@@ -515,294 +351,6 @@ func autoMerge(
 	return nil
 }
 
-// recentlyChangedAlbums is the Minstrel albums whose Lidarr release the
-// resolver changed within releaseChangeSettle, read from the audit log so a
-// restart does not forget them.
-func recentlyChangedAlbums(ctx context.Context, q *dbq.Queries, now time.Time) (map[string]bool, error) {
-	rows, err := q.ListAuditLogByActions(ctx, dbq.ListAuditLogByActionsParams{
-		Actions: []string{string(audit.ActionLidarrReleaseChange)}, SystemOnly: true,
-		PageLimit: 200, PageOffset: 0,
-	})
-	if err != nil {
-		return nil, fmt.Errorf("read recent release changes: %w", err)
-	}
-	out := map[string]bool{}
-	for _, r := range rows {
-		if now.Sub(r.CreatedAt.Time) > releaseChangeSettle {
-			break // newest first
-		}
-		var meta struct {
-			AlbumID string `json:"album_id"`
-		}
-		if json.Unmarshal(r.Metadata, &meta) == nil && meta.AlbumID != "" {
-			out[meta.AlbumID] = true
-		}
-	}
-	return out, nil
-}
-
-// repeatingAlbum is a Minstrel album where Lidarr maps more than one copy of a
-// song, and the groups that showed it.
-type repeatingAlbum struct {
-	albumID          pgtype.UUID
-	releaseGroupMbid string
-	title, artist    string
-	groups           []*resolveGroup
-}
-
-func changeRepeatingReleases(
-	ctx context.Context, q *dbq.Queries, pool *pgxpool.Pool, logger *slog.Logger,
-	lid LidarrLibrary, groups []*resolveGroup, settling map[string]bool,
-) ([]ReleaseChange, error) {
-	albums := map[string]*repeatingAlbum{}
-	for _, g := range groups {
-		if g.class != ClassSameRelease || g.tracked() < 2 {
-			continue
-		}
-		m := g.members[0]
-		key := syncpkg.FormatUUID(m.AlbumID)
-		if settling[key] || m.ReleaseGroupMbid == nil || *m.ReleaseGroupMbid == "" {
-			continue
-		}
-		a := albums[key]
-		if a == nil {
-			a = &repeatingAlbum{albumID: m.AlbumID, releaseGroupMbid: *m.ReleaseGroupMbid, title: m.AlbumTitle, artist: m.ArtistName}
-			albums[key] = a
-		}
-		a.groups = append(a.groups, g)
-	}
-	keys := make([]string, 0, len(albums))
-	for k := range albums {
-		keys = append(keys, k)
-	}
-	sort.Strings(keys)
-
-	var changes []ReleaseChange
-	for _, k := range keys {
-		if len(changes) >= resolveReleaseCap {
-			break
-		}
-		if ctx.Err() != nil {
-			return changes, ctx.Err()
-		}
-		a := albums[k]
-		change, note, err := changeRelease(ctx, q, lid, a)
-		if err != nil {
-			logger.Warn("duplicate resolve: Lidarr release check failed", "album", a.title, "err", err)
-			continue
-		}
-		if change != nil {
-			changes = append(changes, *change)
-			audit.WriteOrLog(ctx, pool, logger, pgtype.UUID{}, pgtype.UUID{}, audit.ActionLidarrReleaseChange, map[string]any{
-				"automatic":    true,
-				"album_id":     k,
-				"album_title":  a.title,
-				"artist_name":  a.artist,
-				"from_release": releaseLabel(change.From),
-				"to_release":   releaseLabel(change.To),
-			})
-		}
-		if note != "" {
-			if err := setGroupNotes(ctx, q, a.groups, note); err != nil {
-				return changes, err
-			}
-		}
-	}
-	return changes, nil
-}
-
-// changeRelease checks one album's monitored release and, when it lists a
-// song twice, moves Lidarr to the release that lists each song once and best
-// covers what is on disk. It returns the change made (nil when none) and the
-// note for the album's groups.
-func changeRelease(
-	ctx context.Context, q *dbq.Queries, lid LidarrLibrary, a *repeatingAlbum,
-) (*ReleaseChange, string, error) {
-	la, err := lid.LookupAlbumByMBID(ctx, a.releaseGroupMbid)
-	if errors.Is(err, lidarr.ErrNotFound) {
-		return nil, "Lidarr does not hold this album, so its copies are left for you.", nil
-	}
-	if err != nil {
-		return nil, "", err
-	}
-	current, err := lid.ListAlbumTracks(ctx, la.ID)
-	if err != nil {
-		return nil, "", err
-	}
-	if !releaseRepeats(current) {
-		return nil, "Lidarr maps each copy to a different track of this album, so none can go without a download.", nil
-	}
-	releases, err := lid.GetAlbumReleases(ctx, la.ID)
-	if err != nil {
-		return nil, "", err
-	}
-	titles, err := q.ListAlbumPresentTrackTitles(ctx, a.albumID)
-	if err != nil {
-		return nil, "", fmt.Errorf("list album titles: %w", err)
-	}
-	onDisk := map[string]bool{}
-	for _, t := range titles {
-		if k := ReleaseTitleKey(t); k != "" {
-			onDisk[k] = true
-		}
-	}
-
-	var from lidarr.AlbumRelease
-	var candidates []releaseCandidate
-	for _, r := range releases {
-		if r.Monitored {
-			from = r
-			continue
-		}
-		tracks, err := lid.ListReleaseTracks(ctx, r.ID)
-		if err != nil {
-			return nil, "", err
-		}
-		if len(tracks) == 0 || releaseRepeats(tracks) {
-			continue
-		}
-		candidates = append(candidates, releaseCandidate{release: r, coverage: coverage(tracks, onDisk)})
-	}
-	best, ok := pickRelease(candidates, coverage(current, onDisk))
-	if !ok {
-		return nil, "Lidarr's release of this album lists songs twice, and no other release lists each once while keeping what is on disk.", nil
-	}
-	if err := lid.SetMonitoredRelease(ctx, la.ID, best.ID); err != nil {
-		// Lidarr's album update unlinks the album's files and queues the rescan
-		// before it answers, and on a large album that outlasts the client's
-		// timeout while the change still lands (Cracker Island on the first
-		// deploy pass). An unanswered PUT is read back: when the release did
-		// change, it is recorded like any other, so the album gets its settle
-		// window and the report shows it.
-		if !errors.Is(err, lidarr.ErrUnreachable) || !releaseMonitored(ctx, lid, la.ID, best.ID) {
-			return nil, "", err
-		}
-	}
-	note := fmt.Sprintf("Lidarr now monitors the %s release, which lists each song once. The extra copies are merged once Lidarr has rescanned.", releaseLabel(best))
-	return &ReleaseChange{AlbumTitle: a.title, ArtistName: a.artist, From: from, To: best}, note, nil
-}
-
-// releaseMonitored reads whether the album's monitored release is now
-// releaseID. A failed read answers false: the change is not assumed.
-func releaseMonitored(ctx context.Context, lid LidarrLibrary, albumID, releaseID int) bool {
-	releases, err := lid.GetAlbumReleases(ctx, albumID)
-	if err != nil {
-		return false
-	}
-	for _, r := range releases {
-		if r.ID == releaseID {
-			return r.Monitored
-		}
-	}
-	return false
-}
-
-type releaseCandidate struct {
-	release  lidarr.AlbumRelease
-	coverage int
-}
-
-// pickRelease chooses among releases that list each song once: the one
-// covering most of the titles on disk, then the fewest tracks (the plainest
-// edition that holds them), then a digital one, then the lowest id so the
-// choice is stable. It refuses a release covering fewer titles on disk than
-// the current one does: the change must not drop a song Lidarr now keeps.
-func pickRelease(cands []releaseCandidate, currentCoverage int) (lidarr.AlbumRelease, bool) {
-	if len(cands) == 0 {
-		return lidarr.AlbumRelease{}, false
-	}
-	sort.SliceStable(cands, func(i, j int) bool {
-		a, b := cands[i], cands[j]
-		if a.coverage != b.coverage {
-			return a.coverage > b.coverage
-		}
-		if a.release.TrackCount != b.release.TrackCount {
-			return a.release.TrackCount < b.release.TrackCount
-		}
-		if da, db := isDigital(a.release), isDigital(b.release); da != db {
-			return da
-		}
-		return a.release.ID < b.release.ID
-	})
-	if cands[0].coverage < currentCoverage {
-		return lidarr.AlbumRelease{}, false
-	}
-	return cands[0].release, true
-}
-
-func isDigital(r lidarr.AlbumRelease) bool {
-	return strings.Contains(strings.ToLower(r.Format), "digital")
-}
-
-// releaseRepeats reports whether a release lists one title more than once.
-func releaseRepeats(tracks []lidarr.ReleaseTrack) bool {
-	seen := map[string]bool{}
-	for _, t := range tracks {
-		k := ReleaseTitleKey(t.Title)
-		if k == "" {
-			continue
-		}
-		if seen[k] {
-			return true
-		}
-		seen[k] = true
-	}
-	return false
-}
-
-// coverage counts the distinct titles on disk that the release lists.
-func coverage(tracks []lidarr.ReleaseTrack, onDisk map[string]bool) int {
-	hit := map[string]bool{}
-	for _, t := range tracks {
-		if k := ReleaseTitleKey(t.Title); onDisk[k] {
-			hit[k] = true
-		}
-	}
-	return len(hit)
-}
-
-func releaseLabel(r lidarr.AlbumRelease) string {
-	label := r.Format
-	if label == "" {
-		label = r.Title
-	}
-	if r.Disambiguation != "" {
-		label = r.Disambiguation + ", " + label
-	}
-	return fmt.Sprintf("%s (%d tracks)", label, r.TrackCount)
-}
-
-func setGroupNotes(ctx context.Context, q *dbq.Queries, groups []*resolveGroup, note string) error {
-	p := dbq.SetDuplicateGroupClassesParams{}
-	for _, g := range groups {
-		g.note = note
-		p.GroupIds = append(p.GroupIds, g.id)
-		p.Classes = append(p.Classes, string(g.class))
-		p.Notes = append(p.Notes, note)
-	}
-	if err := q.SetDuplicateGroupClasses(ctx, p); err != nil {
-		return fmt.Errorf("write duplicate notes: %w", err)
-	}
-	return nil
-}
-
-func resolvedDetail(merged int, changes []ReleaseChange) string {
-	var parts []string
-	if merged > 0 {
-		parts = append(parts, fmt.Sprintf("Merged %d %s Lidarr does not need.", merged, pluralWord(merged, "copy", "copies")))
-	}
-	switch len(changes) {
-	case 0:
-	case 1:
-		c := changes[0]
-		parts = append(parts, fmt.Sprintf("Lidarr now monitors the %s release of %s by %s, which lists each song once.",
-			releaseLabel(c.To), c.AlbumTitle, c.ArtistName))
-	default:
-		parts = append(parts, fmt.Sprintf("Lidarr now monitors a release that lists each song once for %d albums.", len(changes)))
-	}
-	return strings.Join(parts, " ")
-}
-
 func pluralWord(n int, one, many string) string {
 	if n == 1 {
 		return one
@@ -816,20 +364,14 @@ type DuplicateResolveWorker struct {
 	logger   *slog.Logger
 	dataDir  string
 	settings *FingerprintSettingsService
-	lidarr   func() LidarrLibrary
 	tick     time.Duration
 }
 
 // NewDuplicateResolveWorker builds a worker with the production cadence.
-// lidarrFn is asked each pass, so a Lidarr setting saved in admin takes effect
-// without a restart; it returns nil while Lidarr is disabled.
 func NewDuplicateResolveWorker(
-	pool *pgxpool.Pool, logger *slog.Logger, dataDir string,
-	settings *FingerprintSettingsService, lidarrFn func() LidarrLibrary,
+	pool *pgxpool.Pool, logger *slog.Logger, dataDir string, settings *FingerprintSettingsService,
 ) *DuplicateResolveWorker {
-	return &DuplicateResolveWorker{
-		pool: pool, logger: logger, dataDir: dataDir, settings: settings, lidarr: lidarrFn, tick: duplicateResolveTick,
-	}
+	return &DuplicateResolveWorker{pool: pool, logger: logger, dataDir: dataDir, settings: settings, tick: duplicateResolveTick}
 }
 
 // Run blocks until ctx is cancelled, running a pass at start and then each tick.
@@ -865,16 +407,11 @@ func (w *DuplicateResolveWorker) tickOnce(ctx context.Context) {
 		}
 		return
 	}
-	var lid LidarrLibrary
-	if w.lidarr != nil {
-		lid = w.lidarr()
-	}
-	res, err := ResolveDuplicates(ctx, w.pool, w.logger, w.dataDir, lid, w.settings.Get().AutoResolve)
+	res, err := ResolveDuplicates(ctx, w.pool, w.logger, w.dataDir, w.settings.Get().AutoResolve)
 	if err != nil && ctx.Err() == nil {
 		w.logger.Warn("duplicate resolve: pass failed", "err", err)
 	}
 	w.logger.Info("duplicate resolve complete",
-		"groups", res.Groups, "lidarr", res.LidarrConsulted, "merged", res.Merged,
-		"merge_failed", res.MergeFailed, "release_changes", len(res.ReleaseChanges), "songs_linked", res.SongsLinked,
-		"held_back", res.HeldBack, "released", res.Released, "rip_searches", res.RipSearches)
+		"groups", res.Groups, "merged", res.Merged, "merge_failed", res.MergeFailed,
+		"songs_linked", res.SongsLinked, "held_back", res.HeldBack, "released", res.Released)
 }

internal/library/duplicate_resolve_test.go

@@ -2,8 +2,6 @@ package library
 
 import (
 	"context"
-	"errors"
-	"fmt"
 	"os"
 	"path/filepath"
 	"testing"
@@ -12,128 +10,9 @@ import (
 	"github.com/jackc/pgx/v5/pgxpool"
 
 	"git.fabledsword.com/bvandeusen/minstrel/internal/db/dbq"
-	"git.fabledsword.com/bvandeusen/minstrel/internal/lidarr"
 	syncpkg "git.fabledsword.com/bvandeusen/minstrel/internal/sync"
 )
 
-func TestLidarrPathKey(t *testing.T) {
-	// Minstrel and Lidarr see the library under different mounts; the key is
-	// what they agree on.
-	a := LidarrPathKey("/music/Gorillaz/Humanz (2017)/Gorillaz - Humanz - 01 - Ascension.mp3")
-	b := LidarrPathKey("/data/media/music/Gorillaz/Humanz (2017)/Gorillaz - Humanz - 01 - Ascension.mp3")
-	if a != b || a != "Gorillaz/Humanz (2017)/Gorillaz - Humanz - 01 - Ascension.mp3" {
-		t.Errorf("keys differ or are wrong: %q, %q", a, b)
-	}
-	if LidarrPathKey("/music/Gorillaz/Humanz (2017)/a.mp3") == LidarrPathKey("/music/Gorillaz/Demon Days (2005)/a.mp3") {
-		t.Error("two albums' files share a key")
-	}
-}
-
-func rt(titles ...string) []lidarr.ReleaseTrack {
-	out := make([]lidarr.ReleaseTrack, len(titles))
-	for i, title := range titles {
-		out[i] = lidarr.ReleaseTrack{ID: i + 1, Title: title}
-	}
-	return out
-}
-
-func TestReleaseRepeats(t *testing.T) {
-	if !releaseRepeats(rt("Ascension", "Strobelite", "Ascension")) {
-		t.Error("the box set lists Ascension twice, but no repeat was found")
-	}
-	if releaseRepeats(rt("Charger", "Charger (demo)")) {
-		t.Error("a demo was read as a repeat of the song")
-	}
-}
-
-// The Humanz releases as Lidarr lists them (2026-10-09): the box set is
-// monitored, and the 40-track digital release is the one that lists each song
-// once and covers what is on disk.
-func TestPickRelease(t *testing.T) {
-	digital40 := lidarr.AlbumRelease{ID: 10149, Format: "Digital Media", TrackCount: 40}
-	deluxe26 := lidarr.AlbumRelease{ID: 10150, Format: "CD", TrackCount: 26}
-	standard20 := lidarr.AlbumRelease{ID: 10151, Format: "Digital Media", TrackCount: 20}
-
-	got, ok := pickRelease([]releaseCandidate{
-		{release: standard20, coverage: 20}, {release: deluxe26, coverage: 26}, {release: digital40, coverage: 34},
-	}, 34)
-	if !ok || got.ID != digital40.ID {
-		t.Errorf("picked %+v (ok=%v), want the 40-track digital release", got, ok)
-	}
-
-	// Equal coverage: the plainer edition, then digital.
-	cd := lidarr.AlbumRelease{ID: 1, Format: "CD", TrackCount: 26}
-	web := lidarr.AlbumRelease{ID: 2, Format: "Digital Media", TrackCount: 26}
-	if got, _ := pickRelease([]releaseCandidate{{release: cd, coverage: 26}, {release: web, coverage: 26}}, 26); got.ID != web.ID {
-		t.Errorf("picked %+v, want the digital one of two equal releases", got)
-	}
-
-	// Never a release that keeps fewer of the songs on disk than the current one.
-	if got, ok := pickRelease([]releaseCandidate{{release: deluxe26, coverage: 26}}, 34); ok {
-		t.Errorf("picked %+v, which covers fewer songs on disk than the current release", got)
-	}
-}
-
-// fakeLidarr is one Lidarr album with several releases. Switching the
-// monitored release changes what ListAlbumTracks answers, as in Lidarr.
-type fakeLidarr struct {
-	unmapped      []string
-	unmappedErr   error
-	album         lidarr.LidarrAlbum
-	releases      []lidarr.AlbumRelease
-	releaseTracks map[int][]lidarr.ReleaseTrack
-	setCalls      [][2]int
-	searchCalls   [][]int
-	// setErr is what SetMonitoredRelease answers after applying the change:
-	// Lidarr timing out on a change that landed.
-	setErr error
-}
-
-func (f *fakeLidarr) ListUnmappedTrackFiles(context.Context) ([]lidarr.TrackFile, error) {
-	out := make([]lidarr.TrackFile, len(f.unmapped))
-	for i, p := range f.unmapped {
-		out[i] = lidarr.TrackFile{ID: i + 1, Path: p}
-	}
-	return out, f.unmappedErr
-}
-
-func (f *fakeLidarr) LookupAlbumByMBID(_ context.Context, mbid string) (lidarr.LidarrAlbum, error) {
-	if f.album.ForeignAlbumID != mbid {
-		return lidarr.LidarrAlbum{}, lidarr.ErrNotFound
-	}
-	return f.album, nil
-}
-
-func (f *fakeLidarr) ListAlbumTracks(context.Context, int) ([]lidarr.ReleaseTrack, error) {
-	for _, r := range f.releases {
-		if r.Monitored {
-			return f.releaseTracks[r.ID], nil
-		}
-	}
-	return nil, nil
-}
-
-func (f *fakeLidarr) GetAlbumReleases(context.Context, int) ([]lidarr.AlbumRelease, error) {
-	return append([]lidarr.AlbumRelease(nil), f.releases...), nil
-}
-
-func (f *fakeLidarr) ListReleaseTracks(_ context.Context, releaseID int) ([]lidarr.ReleaseTrack, error) {
-	return f.releaseTracks[releaseID], nil
-}
-
-func (f *fakeLidarr) SearchAlbums(_ context.Context, albumIDs []int) error {
-	f.searchCalls = append(f.searchCalls, albumIDs)
-	return nil
-}
-
-func (f *fakeLidarr) SetMonitoredRelease(_ context.Context, albumID, releaseID int) error {
-	f.setCalls = append(f.setCalls, [2]int{albumID, releaseID})
-	for i := range f.releases {
-		f.releases[i].Monitored = f.releases[i].ID == releaseID
-	}
-	return f.setErr
-}
-
 // resolveFixture is the Humanz shape: one album, one song twice, both copies on
 // disk under an artist/album folder, in one pending exact-tier group.
 type resolveFixture struct {
@@ -178,7 +57,6 @@ func newResolveFixture(t *testing.T) resolveFixture {
 		}
 	}
 	exec(`UPDATE tracks SET title = 'Saturnz Barz' WHERE id = $1`, f.clean.ID)
-	exec(`UPDATE albums SET release_group_mbid = 'rg-humanz' WHERE id = $1`, album.ID)
 	if err := pool.QueryRow(ctx,
 		`INSERT INTO duplicate_groups (member_key, tier) VALUES ('resolve-fixture', 'exact') RETURNING id`,
 	).Scan(&f.groupID); err != nil {
@@ -188,9 +66,6 @@ func newResolveFixture(t *testing.T) resolveFixture {
 	return f
 }
 
-// lidarrPath is where Lidarr, mounted elsewhere, sees a fixture file.
-func lidarrPath(p string) string { return "/music/" + LidarrPathKey(p) }
-
 func (f resolveFixture) group(t *testing.T) (status string, class *string, note *string, auto bool) {
 	t.Helper()
 	if err := f.pool.QueryRow(context.Background(),
@@ -203,18 +78,32 @@ func (f resolveFixture) group(t *testing.T) (status string, class *string, note
 
 func exists(p string) bool { _, err := os.Stat(p); return err == nil }
 
-// Lidarr maps the clean copy and holds the rip unmapped: the rip goes, the
-// clean copy stays, and the merge is recorded as the resolver's.
-func TestResolveDuplicates_MergesTheUnmappedCopy_Integration(t *testing.T) {
-	f := newResolveFixture(t)
-	lid := &fakeLidarr{unmapped: []string{lidarrPath(f.ripPath)}}
+// autoMergeAudit reads the resolver's audit row for a group: how many there
+// are, and the reason the last one gave for its survivor.
+func autoMergeAudit(t *testing.T, pool *pgxpool.Pool, groupID pgtype.UUID) (n int, reason string) {
+	t.Helper()
+	if err := pool.QueryRow(context.Background(),
+		`SELECT count(*), coalesce(max(metadata->>'survivor_reason'), '') FROM audit_log
+		  WHERE action = 'duplicate_merge' AND actor_id IS NULL
+		    AND metadata->>'group_id' = $1 AND (metadata->>'automatic')::boolean`,
+		syncpkg.FormatUUID(groupID)).Scan(&n, &reason); err != nil {
+		t.Fatal(err)
+	}
+	return n, reason
+}
 
-	res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", lid, true)
+// 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.
+func TestResolveDuplicates_MergesASameReleaseCopy_Integration(t *testing.T) {
+	f := newResolveFixture(t)
+	res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", true)
 	if err != nil {
 		t.Fatalf("resolve: %v", err)
 	}
-	if res.Merged != 1 || !res.LidarrConsulted {
-		t.Fatalf("result = %+v, want one merge with Lidarr consulted", res)
+	if res.Merged != 1 || res.Classes[ClassSameRelease] != 1 {
+		t.Fatalf("result = %+v, want the same-release group merged", res)
 	}
 	if exists(f.ripPath) || !exists(f.cleanPath) {
 		t.Errorf("rip exists=%v clean exists=%v; want only the clean copy left", exists(f.ripPath), exists(f.cleanPath))
@@ -223,138 +112,24 @@ func TestResolveDuplicates_MergesTheUnmappedCopy_Integration(t *testing.T) {
 	if status != "merged" || class == nil || *class != string(ClassSameRelease) || !auto {
 		t.Errorf("group = (%s, %v, auto=%v), want merged same_release by the resolver", status, class, auto)
 	}
-	var audits int
-	if err := f.pool.QueryRow(context.Background(),
-		`SELECT count(*) FROM audit_log WHERE action = 'duplicate_merge' AND actor_id IS NULL
-		    AND metadata->>'group_id' = $1 AND (metadata->>'automatic')::boolean`,
-		syncpkg.FormatUUID(f.groupID)).Scan(&audits); err != nil {
-		t.Fatal(err)
-	}
-	if audits != 1 {
-		t.Errorf("automatic merge audit rows = %d, want 1", audits)
+	if n, _ := autoMergeAudit(t, f.pool, f.groupID); n != 1 {
+		t.Errorf("automatic merge audit rows = %d, want 1", n)
 	}
 }
 
-// Lidarr maps both copies, and its release lists the song twice: nothing is
-// deleted, the release moves to the one listing each song once, and the next
-// pass leaves it there (lesson #4183's fixed point).
-func TestResolveDuplicates_ChangesARepeatingRelease_Integration(t *testing.T) {
+// With auto-resolve off, the pass classifies and removes nothing.
+func TestResolveDuplicates_ClassifiesOnlyWithoutPermission_Integration(t *testing.T) {
 	f := newResolveFixture(t)
-	lid := &fakeLidarr{
-		album: lidarr.LidarrAlbum{ID: 4723, ForeignAlbumID: "rg-humanz", Title: "Humanz"},
-		releases: []lidarr.AlbumRelease{
-			{ID: 10148, Format: "14x12\" Vinyl, Digital Media", TrackCount: 4, Monitored: true},
-			{ID: 10149, Format: "Digital Media", TrackCount: 2},
-		},
-		releaseTracks: map[int][]lidarr.ReleaseTrack{
-			10148: rt("Saturnz Barz", "Ascension", "Saturnz Barz", "Ascension"),
-			10149: rt("Saturnz Barz", "Ascension"),
-		},
-	}
-
-	res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", lid, true)
-	if err != nil {
-		t.Fatalf("resolve: %v", err)
-	}
-	if res.Merged != 0 || !exists(f.ripPath) || !exists(f.cleanPath) {
-		t.Fatalf("merged %d; a copy Lidarr maps was touched", res.Merged)
-	}
-	if len(lid.setCalls) != 1 || lid.setCalls[0] != [2]int{4723, 10149} {
-		t.Fatalf("release changes = %v, want album 4723 to release 10149", lid.setCalls)
-	}
-	status, _, note, _ := f.group(t)
-	if status != "pending" || note == nil || *note == "" {
-		t.Errorf("group = (%s, note %v), want pending with a note saying what changed", status, note)
-	}
-
-	// The next pass: Lidarr has not rescanned yet, so both copies still read
-	// as tracked. The album is settling, so nothing changes.
-	if _, err := ResolveDuplicates(context.Background(), f.pool, nil, "", lid, true); err != nil {
-		t.Fatalf("second resolve: %v", err)
-	}
-	if len(lid.setCalls) != 1 {
-		t.Errorf("release changed again: %v", lid.setCalls)
-	}
-	// And once it has settled, the check itself finds nothing to do: the
-	// release it chose lists each song once.
-	change, _, err := changeRelease(context.Background(), dbq.New(f.pool), lid,
-		&repeatingAlbum{albumID: f.clean.AlbumID, releaseGroupMbid: "rg-humanz"})
-	if err != nil || change != nil || len(lid.setCalls) != 1 {
-		t.Errorf("after the change, changeRelease = (%+v, %v) with %d calls; want no change", change, err, len(lid.setCalls))
-	}
-}
-
-// After a release change Lidarr unmaps every file of the album until it has
-// rescanned. A pass in that window must not read "every copy unmapped" as
-// licence to merge: the copy it would remove may be the one Lidarr maps next.
-func TestResolveDuplicates_LeavesAnAlbumAloneWhileLidarrRescans_Integration(t *testing.T) {
-	f := newResolveFixture(t)
-	lid := &fakeLidarr{
-		album: lidarr.LidarrAlbum{ID: 4723, ForeignAlbumID: "rg-humanz"},
-		releases: []lidarr.AlbumRelease{
-			{ID: 10148, TrackCount: 2, Monitored: true}, {ID: 10149, TrackCount: 1},
-		},
-		releaseTracks: map[int][]lidarr.ReleaseTrack{10148: rt("Saturnz Barz", "Saturnz Barz"), 10149: rt("Saturnz Barz")},
-	}
-	if _, err := ResolveDuplicates(context.Background(), f.pool, nil, "", lid, true); err != nil {
-		t.Fatal(err)
-	}
-	lid.unmapped = []string{lidarrPath(f.cleanPath), lidarrPath(f.ripPath)}
-	res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", lid, true)
+	res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", false)
 	if err != nil {
 		t.Fatal(err)
 	}
-	if res.Merged != 0 || !exists(f.ripPath) || !exists(f.cleanPath) {
-		t.Errorf("merged %d during the rescan window", res.Merged)
+	if res.Merged != 0 || !exists(f.ripPath) {
+		t.Errorf("merged %d", res.Merged)
 	}
-}
-
-// Without Lidarr, or with auto-resolve off, the pass classifies and removes
-// nothing.
-func TestResolveDuplicates_ClassifiesOnlyWithoutLidarrOrPermission_Integration(t *testing.T) {
-	for name, run := range map[string]func(resolveFixture) (DuplicateResolveResult, error){
-		"lidarr disabled": func(f resolveFixture) (DuplicateResolveResult, error) {
-			return ResolveDuplicates(context.Background(), f.pool, nil, "", nil, true)
-		},
-		"lidarr unreachable": func(f resolveFixture) (DuplicateResolveResult, error) {
-			return ResolveDuplicates(context.Background(), f.pool, nil, "", &fakeLidarr{unmappedErr: errors.New("timeout")}, true)
-		},
-		"auto-resolve off": func(f resolveFixture) (DuplicateResolveResult, error) {
-			lid := &fakeLidarr{unmapped: []string{lidarrPath(f.ripPath)}}
-			return ResolveDuplicates(context.Background(), f.pool, nil, "", lid, false)
-		},
-	} {
-		t.Run(name, func(t *testing.T) {
-			f := newResolveFixture(t)
-			res, err := run(f)
-			if err != nil {
-				t.Fatal(err)
-			}
-			if res.Merged != 0 || !exists(f.ripPath) {
-				t.Errorf("merged %d", res.Merged)
-			}
-			status, class, _, _ := f.group(t)
-			if status != "pending" || class == nil || *class != string(ClassSameRelease) {
-				t.Errorf("group = (%s, %v), want pending and classified", status, class)
-			}
-		})
-	}
-}
-
-// The guard itself: a merge asked to remove a copy the check refuses changes
-// nothing, file or row.
-func TestMergeDuplicateGroupGuarded_RefusesATrackedCopy_Integration(t *testing.T) {
-	f := newResolveFixture(t)
-	refuse := func(p string) bool { return p != f.ripPath }
-	_, err := MergeDuplicateGroupGuarded(context.Background(), f.pool, nil, "", f.groupID, f.clean.ID, refuse)
-	if !errors.Is(err, ErrCopyTrackedByLidarr) {
-		t.Fatalf("err = %v, want ErrCopyTrackedByLidarr", err)
-	}
-	if !exists(f.ripPath) {
-		t.Error("the refused copy's file was removed")
-	}
-	if status, _, _, _ := f.group(t); status != "pending" {
-		t.Errorf("group status = %s, want pending", status)
+	status, class, _, _ := f.group(t)
+	if status != "pending" || class == nil || *class != string(ClassSameRelease) {
+		t.Errorf("group = (%s, %v), want pending and classified", status, class)
 	}
 }
 
@@ -416,12 +191,12 @@ func newCrossReleaseRipFixture(t *testing.T) crossReleaseRipFixture {
 	return f
 }
 
-// The rip fulfils nothing in Lidarr while the clean copy on the album does:
-// the rip goes and the album copy stays (#5439, D-a rule 1).
-func TestResolveDuplicates_MergesAnUnmappedRipAcrossReleases_Integration(t *testing.T) {
+// 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).
+func TestResolveDuplicates_MergesARipAcrossReleases_Integration(t *testing.T) {
 	f := newCrossReleaseRipFixture(t)
-	lid := &fakeLidarr{unmapped: []string{lidarrPath(f.ripPath)}}
-	res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", lid, true)
+	res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", true)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -431,21 +206,65 @@ func TestResolveDuplicates_MergesAnUnmappedRipAcrossReleases_Integration(t *test
 	if exists(f.ripPath) || !exists(f.cleanPath) {
 		t.Errorf("rip exists %v, clean exists %v; want only the clean copy", exists(f.ripPath), exists(f.cleanPath))
 	}
+	if _, reason := autoMergeAudit(t, f.pool, f.groupID); reason != "the copy that is not a video rip" {
+		t.Errorf("survivor reason %q, want the rip rule", reason)
+	}
 }
 
-// When Lidarr maps both copies, each fulfils its own release: nothing is
-// removed, and the copies are linked as one song instead.
-func TestResolveDuplicates_KeepsCopiesLidarrMapsOnTwoReleases_Integration(t *testing.T) {
+// Copies on two releases that are both clean each belong to their release:
+// nothing is removed, and they are linked as one song. A rip the operator
+// marked fine counts as clean.
+func TestResolveDuplicates_KeepsCleanCopiesOnTwoReleases_Integration(t *testing.T) {
+	for name, prepare := range map[string]func(f crossReleaseRipFixture) (string, []any){
+		"renamed": func(f crossReleaseRipFixture) (string, []any) {
+			return `UPDATE tracks SET title = 'Feel Good Inc.', file_path = $2 WHERE id = $1`,
+				[]any{f.rip.ID, filepath.Join(filepath.Dir(f.ripPath), "01 - Feel Good Inc.mp3")}
+		},
+		"kept as fine": func(f crossReleaseRipFixture) (string, []any) {
+			return `UPDATE tracks SET source_verdict = 'fine' WHERE id = $1`, []any{f.rip.ID}
+		},
+	} {
+		t.Run(name, func(t *testing.T) {
+			f := newCrossReleaseRipFixture(t)
+			sql, args := prepare(f)
+			if _, err := f.pool.Exec(context.Background(), sql, args...); err != nil {
+				t.Fatal(err)
+			}
+			res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", true)
+			if err != nil {
+				t.Fatal(err)
+			}
+			if res.Merged != 0 || !exists(f.ripPath) {
+				t.Errorf("merged %d; want both copies kept", res.Merged)
+			}
+			if res.SongsLinked != 1 {
+				t.Errorf("linked %d, want the pair linked as one song", res.SongsLinked)
+			}
+		})
+	}
+}
+
+// Identical audio under two titles on two albums, neither a rip: which tags
+// are wrong is the operator's call, so nothing is merged or linked.
+func TestResolveDuplicates_LeavesAMismatchForTheOperator_Integration(t *testing.T) {
 	f := newCrossReleaseRipFixture(t)
-	res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", &fakeLidarr{}, true)
+	ctx := context.Background()
+	if _, err := f.pool.Exec(ctx, `UPDATE duplicate_groups SET tier = 'exact' WHERE id = $1`, f.groupID); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := f.pool.Exec(ctx, `UPDATE tracks SET title = 'DARE', file_path = $2 WHERE id = $1`,
+		f.rip.ID, filepath.Join(filepath.Dir(f.ripPath), "01 - DARE.mp3")); err != nil {
+		t.Fatal(err)
+	}
+	res, err := ResolveDuplicates(ctx, f.pool, nil, "", true)
 	if err != nil {
 		t.Fatal(err)
 	}
-	if res.Merged != 0 || !exists(f.ripPath) {
-		t.Errorf("merged %d; want both copies kept", res.Merged)
+	if res.Classes[ClassMismatch] != 1 || res.Merged != 0 || res.SongsLinked != 0 {
+		t.Fatalf("classes %v, merged %d, linked %d; want a mismatch left alone", res.Classes, res.Merged, res.SongsLinked)
 	}
-	if res.SongsLinked != 1 {
-		t.Errorf("linked %d, want the pair linked as one song", res.SongsLinked)
+	if status, _, note, _ := (resolveFixture{pool: f.pool, groupID: f.groupID}).group(t); status != "pending" || note == nil || *note == "" {
+		t.Errorf("group = (%s, note %v), want pending with a note", status, note)
 	}
 }
 
@@ -455,6 +274,11 @@ func TestResolveDuplicates_HoldsBackRips_Integration(t *testing.T) {
 	f := newCrossReleaseRipFixture(t)
 	ctx := context.Background()
 	q := dbq.New(f.pool)
+	// Without its group the rip has no clean copy to merge into, so it stays
+	// on disk and only its verdict changes.
+	if _, err := f.pool.Exec(ctx, `DELETE FROM duplicate_groups WHERE id = $1`, f.groupID); err != nil {
+		t.Fatal(err)
+	}
 	verdict := func(id pgtype.UUID) *string {
 		t.Helper()
 		var v *string
@@ -465,7 +289,7 @@ func TestResolveDuplicates_HoldsBackRips_Integration(t *testing.T) {
 	}
 	resolve := func() DuplicateResolveResult {
 		t.Helper()
-		res, err := ResolveDuplicates(ctx, f.pool, nil, "", &fakeLidarr{}, true)
+		res, err := ResolveDuplicates(ctx, f.pool, nil, "", true)
 		if err != nil {
 			t.Fatal(err)
 		}
@@ -512,123 +336,3 @@ func TestResolveDuplicates_HoldsBackRips_Integration(t *testing.T) {
 		t.Errorf("set on an unflagged track: %d, %v; want 0 rows", n, err)
 	}
 }
-
-// A rip that is the only copy of its song: Lidarr is asked to search its album
-// for a better release (#5447), once a week at most, and the rip is not touched.
-// A rip with a clean copy elsewhere is not searched for.
-func TestResolveDuplicates_SearchesForASoleCopyRip_Integration(t *testing.T) {
-	f := newCrossReleaseRipFixture(t)
-	ctx := context.Background()
-	exec := func(sql string, args ...any) {
-		t.Helper()
-		if _, err := f.pool.Exec(ctx, sql, args...); err != nil {
-			t.Fatalf("exec %q: %v", sql, err)
-		}
-	}
-	// The single's rip has a clean copy on the album: never searched for.
-	exec(`UPDATE albums SET release_group_mbid = 'rg-single' WHERE id = $1`, f.rip.AlbumID)
-	lid := &fakeLidarr{album: lidarr.LidarrAlbum{ID: 77, ForeignAlbumID: "rg-single"}}
-	if _, err := ResolveDuplicates(ctx, f.pool, nil, "", lid, true); err != nil {
-		t.Fatal(err)
-	}
-	if len(lid.searchCalls) != 0 {
-		t.Fatalf("searched %v while a clean copy exists", lid.searchCalls)
-	}
-
-	// Without the group and the song link, the rip is the only copy.
-	exec(`DELETE FROM duplicate_groups WHERE id = $1`, f.groupID)
-	exec(`UPDATE tracks SET song_id = NULL WHERE id IN ($1, $2)`, f.rip.ID, f.clean.ID)
-	res, err := ResolveDuplicates(ctx, f.pool, nil, "", lid, true)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if res.RipSearches != 1 || len(lid.searchCalls) != 1 || len(lid.searchCalls[0]) != 1 || lid.searchCalls[0][0] != 77 {
-		t.Fatalf("rip searches %d, calls %v; want album 77 searched once", res.RipSearches, lid.searchCalls)
-	}
-	if !exists(f.ripPath) {
-		t.Error("the rip was removed; a search must not touch it")
-	}
-
-	// The next pass, inside the week, leaves the album alone.
-	if res, err := ResolveDuplicates(ctx, f.pool, nil, "", lid, true); err != nil || res.RipSearches != 0 {
-		t.Errorf("second pass searched %d (%v), want 0", res.RipSearches, err)
-	}
-	var searchedAt pgtype.Timestamptz
-	rows, err := dbq.New(f.pool).ListSuspectSourceTracks(ctx, dbq.ListSuspectSourceTracksParams{
-		Pattern: SuspectSourcePattern, PageLimit: 10,
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-	for _, r := range rows {
-		if r.ID == f.rip.ID {
-			searchedAt = r.SearchedAt
-		}
-	}
-	if !searchedAt.Valid {
-		t.Error("the suspect-sources report doesn't show the search")
-	}
-}
-
-// Lidarr applies the release change but the PUT times out (Cracker Island on
-// the first deploy pass). The change is read back and recorded, so the album
-// settles; when it did not land, the error stands and nothing is recorded.
-func TestResolveDuplicates_RecordsAReleaseChangeLidarrDidNotAnswer_Integration(t *testing.T) {
-	for name, landed := range map[string]bool{"landed": true, "did not land": false} {
-		t.Run(name, func(t *testing.T) {
-			f := newResolveFixture(t)
-			lid := &fakeLidarr{
-				album: lidarr.LidarrAlbum{ID: 4706, ForeignAlbumID: "rg-humanz", Title: "Cracker Island"},
-				releases: []lidarr.AlbumRelease{
-					{ID: 1, Format: "Digital Media", TrackCount: 4, Monitored: true},
-					{ID: 2, Format: "Digital Media", TrackCount: 2},
-				},
-				releaseTracks: map[int][]lidarr.ReleaseTrack{
-					1: rt("Saturnz Barz", "Ascension", "Saturnz Barz", "Ascension"),
-					2: rt("Saturnz Barz", "Ascension"),
-				},
-				setErr: fmt.Errorf("%w: context deadline exceeded", lidarr.ErrUnreachable),
-			}
-			if !landed {
-				lid.setErr = fmt.Errorf("%w: connection refused", lidarr.ErrUnreachable)
-			}
-			// ResetDB keeps audit_log, so other tests' release changes are
-			// still in it: count what this pass adds.
-			audited := func() (n int) {
-				t.Helper()
-				if err := f.pool.QueryRow(context.Background(),
-					`SELECT count(*) FROM audit_log WHERE action = 'lidarr_release_change'`).Scan(&n); err != nil {
-					t.Fatal(err)
-				}
-				return n
-			}
-			before := audited()
-			res, err := ResolveDuplicates(context.Background(), f.pool, nil, "", &undoingLidarr{fakeLidarr: lid, undo: !landed}, true)
-			if landed {
-				if err != nil || len(res.ReleaseChanges) != 1 {
-					t.Fatalf("changes %d (%v), want the landed change recorded", len(res.ReleaseChanges), err)
-				}
-			} else if len(res.ReleaseChanges) != 0 {
-				t.Fatalf("recorded %d changes that did not land", len(res.ReleaseChanges))
-			}
-			if got, want := audited()-before, map[bool]int{true: 1, false: 0}[landed]; got != want {
-				t.Errorf("audited %d release changes, want %d", got, want)
-			}
-		})
-	}
-}
-
-// undoingLidarr is a Lidarr whose release change fails without landing when
-// undo is set: the PUT never reached it.
-type undoingLidarr struct {
-	*fakeLidarr
-	undo bool
-}
-
-func (u *undoingLidarr) SetMonitoredRelease(ctx context.Context, albumID, releaseID int) error {
-	if !u.undo {
-		return u.fakeLidarr.SetMonitoredRelease(ctx, albumID, releaseID)
-	}
-	u.setCalls = append(u.setCalls, [2]int{albumID, releaseID})
-	return u.setErr
-}

internal/library/duplicate_survivor.go

@@ -14,10 +14,6 @@ type SurvivorCandidate struct {
 	FileSize   int64
 	AddedAt    time.Time
 
-	// LidarrTracked: Lidarr maps this file to a track of the release it
-	// monitors. Removing it opens a hole Lidarr downloads again (M498), so a
-	// tracked copy outranks everything else. False when Lidarr was not asked.
-	LidarrTracked bool
 	// TagFit is TagFitScore: how well the copy's tags and name fit the album.
 	TagFit int
 }
@@ -56,9 +52,9 @@ var losslessFormats = map[string]bool{"flac": true, "wav": true}
 // the report shows it and the merge (#3911) lets the operator choose another.
 //
 // In order:
-//  0. the copy Lidarr maps, then the copy whose tags fit the album best
-//     (TagFitScore). Both are zero for every copy when the caller does not
-//     know them, and the order falls through to the quality rules below
+//  0. the copy whose tags fit the album best (TagFitScore). It is zero for
+//     every copy when the caller does not know it, and the order falls through
+//     to the quality rules below
 //  1. lossless over lossy — the one difference no later step can recover
 //  2. the larger file — for one recording at one duration that is the higher
 //     bitrate. The scanner does not record bitrate (tracks.bitrate is never
@@ -81,8 +77,6 @@ func ProposeSurvivor(cands []SurvivorCandidate) (trackID, reason string) {
 	// runner-up — the rule that actually decided, not every rule it passed.
 	next := ranked[1]
 	switch {
-	case best.LidarrTracked != next.LidarrTracked:
-		return best.TrackID, "the copy Lidarr tracks"
 	case best.TagFit != next.TagFit:
 		return best.TrackID, "tags fit the album"
 	case isLossless(best) != isLossless(next):
@@ -97,9 +91,6 @@ func ProposeSurvivor(cands []SurvivorCandidate) (trackID, reason string) {
 }
 
 func survivorBefore(a, b SurvivorCandidate) bool {
-	if a.LidarrTracked != b.LidarrTracked {
-		return a.LidarrTracked
-	}
 	if a.TagFit != b.TagFit {
 		return a.TagFit > b.TagFit
 	}

internal/library/duplicate_survivor_test.go

@@ -90,11 +90,10 @@ func TestProposeSurvivor_ReasonIsTheDecidingRule(t *testing.T) {
 	}
 }
 
-// M498 #5436: the copy Lidarr maps outranks everything, then the copy whose
-// tags fit the album; quality decides only between copies equal on both. Each
-// case is built so the older rules would choose the other copy, so a reorder
-// that drops the new rules fails.
-func TestProposeSurvivor_LidarrThenTagFit(t *testing.T) {
+// M498 #5436: the copy whose tags fit the album outranks quality, which decides
+// only between copies whose tags fit equally. Each case is built so the quality
+// rules would choose the other copy, so a reorder that drops tag fit fails.
+func TestProposeSurvivor_TagFitFirst(t *testing.T) {
 	at := time.Date(2025, 1, 1, 0, 0, 0, 0, time.UTC)
 	cases := []struct {
 		name       string
@@ -103,12 +102,12 @@ func TestProposeSurvivor_LidarrThenTagFit(t *testing.T) {
 		wantReason string
 	}{
 		{
-			name: "tracked beats lossless and better tags",
+			name: "tag fit beats lossless",
 			cands: []SurvivorCandidate{
-				{TrackID: "flac", FileFormat: "flac", FileSize: 40_000_000, AddedAt: at, TagFit: 3},
-				{TrackID: "tracked", FileFormat: "mp3", FileSize: 5_000_000, AddedAt: at, TagFit: 1, LidarrTracked: true},
+				{TrackID: "flac", FileFormat: "flac", FileSize: 40_000_000, AddedAt: at, TagFit: 1},
+				{TrackID: "fits", FileFormat: "mp3", FileSize: 5_000_000, AddedAt: at, TagFit: 3},
 			},
-			wantID: "tracked", wantReason: "the copy Lidarr tracks",
+			wantID: "fits", wantReason: "tags fit the album",
 		},
 		{
 			// The Humanz shape: two rips a few bytes apart, one carrying a

internal/library/song_link_test.go

@@ -78,7 +78,7 @@ func TestCrossReleaseCopiesCountAsOneSong_Integration(t *testing.T) {
 	q := dbq.New(pool)
 	f := newSongLinkFixture(t, pool)
 
-	res, err := ResolveDuplicates(ctx, pool, nil, "", nil, true)
+	res, err := ResolveDuplicates(ctx, pool, nil, "", true)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -118,7 +118,7 @@ func TestCrossReleaseCopiesCountAsOneSong_Integration(t *testing.T) {
 	}
 
 	// A second pass changes nothing.
-	if res, err := ResolveDuplicates(ctx, pool, nil, "", nil, true); err != nil || res.SongsLinked != 0 {
+	if res, err := ResolveDuplicates(ctx, pool, nil, "", true); err != nil || res.SongsLinked != 0 {
 		t.Errorf("second pass linked %d (%v), want 0", res.SongsLinked, err)
 	}
 
@@ -155,7 +155,7 @@ func TestCrossReleaseLinkNeedsAutoResolve_Integration(t *testing.T) {
 	ctx := context.Background()
 	q := dbq.New(pool)
 	f := newSongLinkFixture(t, pool)
-	if _, err := ResolveDuplicates(ctx, pool, nil, "", nil, false); err != nil {
+	if _, err := ResolveDuplicates(ctx, pool, nil, "", false); err != nil {
 		t.Fatal(err)
 	}
 	keys := songKeys(t, q, f.single.ID, f.albumCut.ID)

internal/lidarr/releases.go

@@ -1,175 +0,0 @@
-package lidarr
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"net/url"
-	"strconv"
-)
-
-// What Lidarr holds on disk and how it maps it (Scribe milestone #498).
-//
-// Lidarr maps one file to each track of the ONE release it monitors per album.
-// A file it holds but maps to no track is "unmapped": removing it opens no hole.
-// Removing a mapped file does, and Lidarr fills the hole by downloading again —
-// which is why Minstrel's duplicate resolver asks before it deletes anything.
-
-// TrackFile is a file Lidarr holds on disk.
-type TrackFile struct {
-	ID      int    `json:"id"`
-	Path    string `json:"path"`
-	AlbumID int    `json:"albumId"`
-}
-
-// ListUnmappedTrackFiles hits GET /api/v1/trackfile?unmapped=true: files under
-// Lidarr's root folders that it has scanned but matched to no track.
-func (c *Client) ListUnmappedTrackFiles(ctx context.Context) ([]TrackFile, error) {
-	resp, err := c.get(ctx, "/api/v1/trackfile", url.Values{"unmapped": {"true"}})
-	if err != nil {
-		return nil, err
-	}
-	defer func() { _ = resp.Body.Close() }()
-	var out []TrackFile
-	if err := json.NewDecoder(resp.Body).Decode(&out); err != nil {
-		return nil, fmt.Errorf("%w: decode unmapped track files: %v", ErrInvalidPayload, err)
-	}
-	return out, nil
-}
-
-// AlbumRelease is one edition of an album as Lidarr knows it: the 14×12" vinyl
-// box set, the 2×CD deluxe, the digital standard. Exactly one is Monitored.
-type AlbumRelease struct {
-	ID             int    `json:"id"`
-	Title          string `json:"title"`
-	Disambiguation string `json:"disambiguation"`
-	Format         string `json:"format"`
-	TrackCount     int    `json:"trackCount"`
-	MediumCount    int    `json:"mediumCount"`
-	Monitored      bool   `json:"monitored"`
-}
-
-// ReleaseTrack is one track of a release.
-type ReleaseTrack struct {
-	ID           int    `json:"id"`
-	Title        string `json:"title"`
-	MediumNumber int    `json:"mediumNumber"`
-	TrackFileID  int    `json:"trackFileId"`
-}
-
-// GetAlbumReleases hits GET /api/v1/album/{id} and returns the album's releases.
-func (c *Client) GetAlbumReleases(ctx context.Context, albumID int) ([]AlbumRelease, error) {
-	resp, err := c.get(ctx, "/api/v1/album/"+strconv.Itoa(albumID), nil)
-	if err != nil {
-		return nil, err
-	}
-	defer func() { _ = resp.Body.Close() }()
-	var album struct {
-		Releases []AlbumRelease `json:"releases"`
-	}
-	if err := json.NewDecoder(resp.Body).Decode(&album); err != nil {
-		return nil, fmt.Errorf("%w: decode album: %v", ErrInvalidPayload, err)
-	}
-	return album.Releases, nil
-}
-
-// ListAlbumTracks hits GET /api/v1/track?albumId= : the tracks of the release
-// Lidarr monitors for that album.
-func (c *Client) ListAlbumTracks(ctx context.Context, albumID int) ([]ReleaseTrack, error) {
-	return c.listTracks(ctx, url.Values{"albumId": {strconv.Itoa(albumID)}})
-}
-
-// ListReleaseTracks hits GET /api/v1/track?albumReleaseId= : the tracks of one
-// release, monitored or not.
-func (c *Client) ListReleaseTracks(ctx context.Context, releaseID int) ([]ReleaseTrack, error) {
-	return c.listTracks(ctx, url.Values{"albumReleaseId": {strconv.Itoa(releaseID)}})
-}
-
-func (c *Client) listTracks(ctx context.Context, q url.Values) ([]ReleaseTrack, error) {
-	resp, err := c.get(ctx, "/api/v1/track", q)
-	if err != nil {
-		return nil, err
-	}
-	defer func() { _ = resp.Body.Close() }()
-	var out []ReleaseTrack
-	if err := json.NewDecoder(resp.Body).Decode(&out); err != nil {
-		return nil, fmt.Errorf("%w: decode tracks: %v", ErrInvalidPayload, err)
-	}
-	return out, nil
-}
-
-// SetMonitoredRelease makes releaseID the album's monitored release.
-//
-// It is the round trip Lidarr's own "edit album" makes: GET the album resource,
-// flip `monitored` on its releases, PUT the whole resource back. Lidarr's
-// UpdateAlbum publishes AlbumEditedEvent, and when the monitored release changed,
-// AlbumEditedService unlinks the album's track files and queues
-// RescanFoldersCommand for the artist's folder, which maps the files on disk to
-// the new release's tracks. Files the new release has no track for come out of
-// that rescan unmapped. (Lidarr source, develop: Music/Services/
-// AlbumEditedService.cs and AlbumService.UpdateAlbum.)
-//
-// The resource is kept as raw JSON so every field Lidarr sent goes back
-// unchanged; only the releases' monitored flags differ. Returns ErrNotFound when
-// the album has no release with that id.
-func (c *Client) SetMonitoredRelease(ctx context.Context, albumID, releaseID int) error {
-	path := "/api/v1/album/" + strconv.Itoa(albumID)
-	resp, err := c.get(ctx, path, nil)
-	if err != nil {
-		return err
-	}
-	var album map[string]any
-	err = json.NewDecoder(resp.Body).Decode(&album)
-	_ = resp.Body.Close()
-	if err != nil {
-		return fmt.Errorf("%w: decode album: %v", ErrInvalidPayload, err)
-	}
-
-	releases, _ := album["releases"].([]any)
-	found := false
-	for _, r := range releases {
-		rel, ok := r.(map[string]any)
-		if !ok {
-			continue
-		}
-		id, _ := rel["id"].(float64)
-		match := int(id) == releaseID
-		rel["monitored"] = match
-		found = found || match
-	}
-	if !found {
-		return fmt.Errorf("%w: release %d on album %d", ErrNotFound, releaseID, albumID)
-	}
-
-	body, err := json.Marshal(album)
-	if err != nil {
-		return fmt.Errorf("%w: marshal album: %v", ErrInvalidPayload, err)
-	}
-	putResp, err := c.put(ctx, path, body)
-	if err != nil {
-		return err
-	}
-	_ = putResp.Body.Close()
-	return nil
-}
-
-// SearchAlbums asks Lidarr to search its indexers for the albums
-// (POST /api/v1/command, AlbumSearch). Lidarr grabs a release only when it
-// beats the files the album already has under the quality profile, so for an
-// album whose tracks are all present this is an upgrade search: harmless when
-// nothing better exists. The command is queued; the call does not wait for it.
-func (c *Client) SearchAlbums(ctx context.Context, albumIDs []int) error {
-	if len(albumIDs) == 0 {
-		return nil
-	}
-	body, err := json.Marshal(map[string]any{"name": "AlbumSearch", "albumIds": albumIDs})
-	if err != nil {
-		return fmt.Errorf("%w: marshal command: %v", ErrInvalidPayload, err)
-	}
-	resp, err := c.post(ctx, "/api/v1/command", body)
-	if err != nil {
-		return err
-	}
-	_ = resp.Body.Close()
-	return nil
-}

internal/lidarr/releases_test.go

@@ -1,138 +0,0 @@
-package lidarr
-
-import (
-	"context"
-	"encoding/json"
-	"errors"
-	"io"
-	"net/http"
-	"testing"
-)
-
-func TestListUnmappedTrackFiles(t *testing.T) {
-	c, srv := newTestClient(func(w http.ResponseWriter, r *http.Request) {
-		if r.URL.Path != "/api/v1/trackfile" || r.URL.Query().Get("unmapped") != "true" {
-			t.Errorf("request = %s?%s, want /api/v1/trackfile?unmapped=true", r.URL.Path, r.URL.RawQuery)
-		}
-		_, _ = w.Write([]byte(`[{"id":7,"path":"/music/A/B (2017)/A - B - 02 - X.mp3","albumId":0}]`))
-	})
-	defer srv.Close()
-
-	got, err := c.ListUnmappedTrackFiles(context.Background())
-	if err != nil {
-		t.Fatalf("ListUnmappedTrackFiles: %v", err)
-	}
-	if len(got) != 1 || got[0].ID != 7 || got[0].Path != "/music/A/B (2017)/A - B - 02 - X.mp3" {
-		t.Errorf("got %+v", got)
-	}
-}
-
-func TestReleaseReads(t *testing.T) {
-	c, srv := newTestClient(func(w http.ResponseWriter, r *http.Request) {
-		switch {
-		case r.URL.Path == "/api/v1/album/4723":
-			_, _ = w.Write([]byte(`{"id":4723,"releases":[
-				{"id":10148,"title":"Humanz","format":"14x12\" Vinyl, Digital Media","trackCount":68,"mediumCount":15,"monitored":true},
-				{"id":10149,"title":"Humanz","format":"Digital Media","trackCount":40,"mediumCount":1,"monitored":false}]}`))
-		case r.URL.Path == "/api/v1/track" && r.URL.Query().Get("albumId") == "4723":
-			_, _ = w.Write([]byte(`[{"id":1,"title":"Ascension","mediumNumber":1,"trackFileId":9}]`))
-		case r.URL.Path == "/api/v1/track" && r.URL.Query().Get("albumReleaseId") == "10149":
-			_, _ = w.Write([]byte(`[{"id":2,"title":"Ascension","mediumNumber":1,"trackFileId":0}]`))
-		default:
-			t.Errorf("unexpected request %s?%s", r.URL.Path, r.URL.RawQuery)
-			w.WriteHeader(http.StatusNotFound)
-		}
-	})
-	defer srv.Close()
-	ctx := context.Background()
-
-	rels, err := c.GetAlbumReleases(ctx, 4723)
-	if err != nil {
-		t.Fatalf("GetAlbumReleases: %v", err)
-	}
-	if len(rels) != 2 || !rels[0].Monitored || rels[0].MediumCount != 15 || rels[1].TrackCount != 40 {
-		t.Errorf("releases = %+v", rels)
-	}
-	tr, err := c.ListAlbumTracks(ctx, 4723)
-	if err != nil || len(tr) != 1 || tr[0].TrackFileID != 9 {
-		t.Errorf("ListAlbumTracks = %+v, %v", tr, err)
-	}
-	tr, err = c.ListReleaseTracks(ctx, 10149)
-	if err != nil || len(tr) != 1 || tr[0].Title != "Ascension" {
-		t.Errorf("ListReleaseTracks = %+v, %v", tr, err)
-	}
-}
-
-// The PUT carries the whole resource back, with only the releases' monitored
-// flags changed: exactly the chosen release is monitored, and a field Minstrel
-// does not model survives the round trip.
-func TestSetMonitoredRelease_RoundTripsTheResource(t *testing.T) {
-	var put map[string]any
-	c, srv := newTestClient(func(w http.ResponseWriter, r *http.Request) {
-		if r.URL.Path != "/api/v1/album/4723" {
-			t.Errorf("path = %q", r.URL.Path)
-		}
-		switch r.Method {
-		case http.MethodGet:
-			_, _ = w.Write([]byte(`{"id":4723,"anyReleaseOk":false,"secondaryTypes":["Studio"],"releases":[
-				{"id":10148,"monitored":true},{"id":10149,"monitored":false}]}`))
-		case http.MethodPut:
-			b, _ := io.ReadAll(r.Body)
-			if err := json.Unmarshal(b, &put); err != nil {
-				t.Errorf("PUT body: %v", err)
-			}
-			w.WriteHeader(http.StatusAccepted)
-		}
-	})
-	defer srv.Close()
-
-	if err := c.SetMonitoredRelease(context.Background(), 4723, 10149); err != nil {
-		t.Fatalf("SetMonitoredRelease: %v", err)
-	}
-	rels := put["releases"].([]any)
-	if m := rels[0].(map[string]any)["monitored"]; m != false {
-		t.Errorf("old release monitored = %v, want false", m)
-	}
-	if m := rels[1].(map[string]any)["monitored"]; m != true {
-		t.Errorf("new release monitored = %v, want true", m)
-	}
-	if st, _ := put["secondaryTypes"].([]any); len(st) != 1 || st[0] != "Studio" {
-		t.Errorf("secondaryTypes = %v, want it carried through unchanged", put["secondaryTypes"])
-	}
-}
-
-func TestSetMonitoredRelease_UnknownReleaseSendsNothing(t *testing.T) {
-	c, srv := newTestClient(func(w http.ResponseWriter, r *http.Request) {
-		if r.Method == http.MethodPut {
-			t.Error("PUT sent for a release the album does not have")
-		}
-		_, _ = w.Write([]byte(`{"id":4723,"releases":[{"id":10148,"monitored":true}]}`))
-	})
-	defer srv.Close()
-
-	if err := c.SetMonitoredRelease(context.Background(), 4723, 999); !errors.Is(err, ErrNotFound) {
-		t.Errorf("err = %v, want ErrNotFound", err)
-	}
-}
-
-func TestSearchAlbums_PostsTheCommand(t *testing.T) {
-	var got map[string]any
-	c, srv := newTestClient(func(w http.ResponseWriter, r *http.Request) {
-		if r.Method != http.MethodPost || r.URL.Path != "/api/v1/command" {
-			t.Errorf("request = %s %s, want POST /api/v1/command", r.Method, r.URL.Path)
-		}
-		b, _ := io.ReadAll(r.Body)
-		_ = json.Unmarshal(b, &got)
-		w.WriteHeader(http.StatusCreated)
-		_, _ = w.Write([]byte(`{"id":1,"name":"AlbumSearch"}`))
-	})
-	defer srv.Close()
-
-	if err := c.SearchAlbums(context.Background(), []int{4723, 12}); err != nil {
-		t.Fatalf("SearchAlbums: %v", err)
-	}
-	ids, _ := got["albumIds"].([]any)
-	if got["name"] != "AlbumSearch" || len(ids) != 2 || ids[0] != float64(4723) || ids[1] != float64(12) {
-		t.Errorf("command = %v", got)
-	}
-}

internal/server/server.go

@@ -57,17 +57,6 @@ func (a lidarrUnmonitorAdapter) UnmonitorTrack(ctx context.Context, trackMbid, a
 	return c.UnmonitorTrack(ctx, trackMbid, albumMbid)
 }
 
-// ListUnmappedTrackFiles lets the duplicate merge refuse to remove a copy
-// Lidarr maps (M498). tracks.ErrLidarrDisabled tells it there is no Lidarr to
-// protect.
-func (a lidarrUnmonitorAdapter) ListUnmappedTrackFiles(ctx context.Context) ([]lidarr.TrackFile, error) {
-	c := a.fn()
-	if c == nil {
-		return nil, tracks.ErrLidarrDisabled
-	}
-	return c.ListUnmappedTrackFiles(ctx)
-}
-
 // ScanTrigger is the subset of the scanner the HTTP handler needs. Kept as an
 // interface so tests can stub it without touching the DB. The progressCb
 // parameter (added in m7-scan-progress) lets the orchestrator drive partial-

internal/tracks/service.go

@@ -31,7 +31,6 @@ import (
 	"git.fabledsword.com/bvandeusen/minstrel/internal/audit"
 	"git.fabledsword.com/bvandeusen/minstrel/internal/db/dbq"
 	"git.fabledsword.com/bvandeusen/minstrel/internal/library"
-	"git.fabledsword.com/bvandeusen/minstrel/internal/lidarr"
 	syncpkg "git.fabledsword.com/bvandeusen/minstrel/internal/sync"
 )
 
@@ -41,22 +40,6 @@ import (
 // same pointer.
 var ErrNotFound = apierror.ErrNotFound
 
-// ErrLidarrDisabled is what a LidarrUnmonitorer that also lists Lidarr's
-// unmapped files returns when Lidarr is turned off: there is then no Lidarr
-// record a removal could break, and a merge goes ahead unguarded.
-var ErrLidarrDisabled = errors.New("tracks: lidarr disabled")
-
-// ErrLidarrUnavailable means Lidarr is on but did not answer, so a merge cannot
-// confirm the copies it would remove are ones Lidarr does not need (M498), and
-// refuses rather than guess.
-var ErrLidarrUnavailable = errors.New("tracks: lidarr did not answer")
-
-// lidarrFileLister is the optional part of the Lidarr dependency a merge uses to
-// learn which files Lidarr holds without mapping to any track.
-type lidarrFileLister interface {
-	ListUnmappedTrackFiles(ctx context.Context) ([]lidarr.TrackFile, error)
-}
-
 // LidarrUnmonitorer is the subset of *lidarr.Client RemoveTrack uses.
 // Defined as an interface so tests can stub without spinning up a Lidarr
 // httptest server. UnmonitorTrack failures are non-fatal at the service
@@ -168,9 +151,7 @@ func (s *Service) RemoveTrack(
 }
 
 // MergeDuplicates merges a duplicate group into the copy to keep
-// (library.MergeDuplicateGroupGuarded, refusing to remove a copy Lidarr maps:
-// library.ErrCopyTrackedByLidarr, or ErrLidarrUnavailable when Lidarr cannot
-// say), then — when asked — tells Lidarr to stop
+// (library.MergeDuplicateGroup), then — when asked — tells Lidarr to stop
 // monitoring the removed copies so it does not download them again, and records
 // the merge in the audit log.
 //
@@ -180,11 +161,7 @@ func (s *Service) RemoveTrack(
 func (s *Service) MergeDuplicates(
 	ctx context.Context, groupID, survivorID, actorID pgtype.UUID, unmonitor bool,
 ) (res library.MergeResult, lidarrUnmonitorFailed bool, err error) {
-	removable, err := s.lidarrRemovable(ctx)
-	if err != nil {
-		return res, false, err
-	}
-	res, err = library.MergeDuplicateGroupGuarded(ctx, s.pool, s.logger, s.dataDir, groupID, survivorID, removable)
+	res, err = library.MergeDuplicateGroup(ctx, s.pool, s.logger, s.dataDir, groupID, survivorID)
 	if err != nil {
 		return res, false, err
 	}
@@ -226,29 +203,6 @@ func (s *Service) MergeDuplicates(
 	return res, lidarrUnmonitorFailed, nil
 }
 
-// lidarrRemovable is the merge's guard (M498): only a copy Lidarr holds without
-// mapping it to a track may be removed, because removing a mapped one makes
-// Lidarr download it again. Nil, allowing everything, when Lidarr is disabled
-// or the dependency cannot list files.
-func (s *Service) lidarrRemovable(ctx context.Context) (library.RemovableFunc, error) {
-	lister, ok := s.lidarr.(lidarrFileLister)
-	if !ok {
-		return nil, nil
-	}
-	files, err := lister.ListUnmappedTrackFiles(ctx)
-	if errors.Is(err, ErrLidarrDisabled) {
-		return nil, nil
-	}
-	if err != nil {
-		return nil, fmt.Errorf("%w: %v", ErrLidarrUnavailable, err)
-	}
-	unmapped := make(map[string]bool, len(files))
-	for _, f := range files {
-		unmapped[library.LidarrPathKey(f.Path)] = true
-	}
-	return func(p string) bool { return unmapped[library.LidarrPathKey(p)] }, nil
-}
-
 // sameLidarrTrack reports whether two copies are the same Lidarr track: one
 // recording on one album. Lidarr monitors per album track, so when the removed
 // copy is a second file of the kept copy's own album track — the #3885 case —

web/src/lib/api/types.ts

@@ -479,10 +479,6 @@ export type AdminDuplicateMember = {
   added_at: string;
   like_count: number;
   play_count: number;
-  // Lidarr's view of the file as of the resolver's last pass (M498): tracked
-  // means Lidarr maps it to a track, so removing it would make Lidarr download
-  // it again. null when Lidarr wasn't asked.
-  lidarr_state: 'tracked' | 'unmapped' | null;
   disc_number: number | null;
   track_number: number | null;
 };

web/src/lib/components/FingerprintSettingsCard.svelte

@@ -120,10 +120,9 @@
       <span>
         <span class="text-sm text-text-primary">Resolve duplicates automatically</span>
         <span class="block text-xs text-text-secondary">
-          Merges copies Lidarr doesn't use into the one it does, and moves a Lidarr album off a
-          release that lists songs twice. A song kept on several releases counts as one song, and
-          video rips are kept out of radio and the mixes. A copy Lidarr uses is never removed.
-          Off, every group waits here for you.
+          Merges a song held twice on one album, and a video rip with a clean copy elsewhere, into
+          the copy that fits best. A song kept on several releases counts as one song, and video
+          rips are kept out of radio and the mixes. Off, every group waits here for you.
         </span>
       </span>
     </label>

web/src/lib/styles/error-copy.json

@@ -46,8 +46,6 @@
   "sweep_in_progress": "A duplicate sweep is already running.",
   "duplicate_group_not_pending": "That group has already been resolved.",
   "survivor_not_in_group": "That copy isn't part of this group any more.",
-  "copy_tracked_by_lidarr": "Lidarr uses a copy this would remove, and would download it again. Keep that copy instead.",
-  "lidarr_unavailable": "Lidarr didn't answer, so it isn't safe to remove a copy yet. Try again shortly.",
   "suspect_track_not_found": "That track isn't flagged any more. Refresh the list.",
   "invalid_verdict": "That isn't a choice for a flagged track.",
   "invalid_setting": "That setting is out of range.",

web/src/routes/admin/duplicates/+page.svelte

@@ -23,17 +23,17 @@
   import TabStrip from '#lib/components/TabStrip.svelte';
 
   // Tracks the duplicate sweep believes hold one recording (#3912). The
-  // resolver (M498) settles what is safe on its own: copies Lidarr doesn't use
-  // are merged into the one it does, and a Lidarr release that lists songs
-  // twice is changed. What is left comes in two tabs: groups that need the
-  // operator, and the same song on different releases, which is kept on
-  // purpose. A third tab lists what the resolver did.
+  // resolver (M498, M502) settles what is safe on its own: a song held twice on
+  // one album, and a video rip with a clean copy elsewhere. What is left comes
+  // in two tabs: groups that need the operator, and the same song on different
+  // releases, which is kept on purpose. A third tab lists what the resolver
+  // did.
   //
   // Dismissing a group says "these are not duplicates", and the sweep will not
   // propose that set again. On the cross-release tab it reads "Not the same
   // song" and also undoes the link that made the copies one song (#5438). Merging (#3911) keeps one copy, moves the others'
   // likes, plays and playlist entries onto it, and deletes their files, so it
-  // asks twice. The server refuses to remove a copy Lidarr uses.
+  // asks twice.
 
   type Tab = DuplicatesView | 'resolved';
   const fromUrl = page.url.searchParams.get('view');
@@ -108,13 +108,6 @@
     return keepChoice[group.id] ?? group.survivor_track_id;
   }
 
-  // Copies the merge would remove that Lidarr uses. The server refuses these,
-  // so the confirm says so before the click rather than after.
-  function trackedLosers(group: AdminDuplicateGroup): AdminDuplicateMember[] {
-    const keep = keeperOf(group);
-    return group.members.filter((m) => m.track_id !== keep && m.lidarr_state === 'tracked');
-  }
-
   function fileCountLabel(n: number): string {
     return n === 1 ? '1 file' : `${n} files`;
   }
@@ -223,8 +216,8 @@
       </button>
     </div>
     <p class="text-text-secondary">
-      Tracks that hold the same recording more than once. Copies Lidarr doesn't use are merged on
-      their own, and a copy Lidarr uses is never removed. What's left here needs you.
+      Tracks that hold the same recording more than once. A song held twice on one album is merged on
+      its own, and so is a video rip with a clean copy elsewhere. What's left here needs you.
     </p>
   </header>
 
@@ -265,7 +258,7 @@
         <Copy size={28} strokeWidth={1} class="mx-auto text-text-muted" />
         <p class="mt-3 text-text-primary">Nothing resolved automatically yet.</p>
         <p class="mt-1 text-sm text-text-secondary">
-          Merges and Lidarr release changes made on their own are listed here.
+          Merges made on their own are listed here.
         </p>
       </div>
     {:else}
@@ -279,7 +272,7 @@
                 {#if item.details.survivor_reason}
                   <span class="text-text-secondary">({item.details.survivor_reason})</span>
                 {/if}
-                and removed {fileCountLabel(removed.length)} Lidarr doesn't use.
+                and removed {fileCountLabel(removed.length)}.
               </p>
               {#each removed as r (r.track_id)}
                 <p class="truncate font-mono text-xs text-text-muted" title={r.file_path}>{r.file_path}</p>
@@ -354,7 +347,6 @@
     <ul class="space-y-4">
       {#each groups as group (group.id)}
         {@const titles = differingTitles(group)}
-        {@const blocked = trackedLosers(group)}
         <li class="overflow-hidden rounded-lg border border-border bg-surface" data-testid="duplicate-group">
           <div class="flex items-center justify-between gap-4 border-b border-border px-4 py-3">
             <div class="min-w-0">
@@ -373,7 +365,7 @@
               <button
                 type="button"
                 onclick={() => onMerge(group)}
-                disabled={merging === group.id || (confirmingMerge === group.id && blocked.length > 0)}
+                disabled={merging === group.id}
                 class="rounded-md px-3 py-1.5 text-sm disabled:opacity-50 {confirmingMerge === group.id
                   ? 'bg-action-destructive text-action-fg hover:opacity-90'
                   : 'border border-border text-text-primary hover:bg-surface-hover'}"
@@ -416,26 +408,18 @@
           {#if confirmingMerge === group.id}
             <!-- What the second click will do, said plainly before it is done. -->
             <div class="space-y-2 border-b border-border bg-surface-hover px-4 py-3 text-sm" data-testid="merge-confirm">
-              {#if blocked.length > 0}
-                <p class="text-error-fg" data-testid="merge-blocked">
-                  Lidarr uses {blocked.length === 1 ? 'a copy' : 'copies'} this would remove, and would
-                  download {blocked.length === 1 ? 'it' : 'them'} again. Keep the copy Lidarr uses, or
-                  leave this group as it is.
-                </p>
-              {:else}
-                <p class="text-text-primary">
-                  The copy marked Keep stays. The other {fileCountLabel(group.members.length - 1)} will be
-                  deleted from disk, and their likes, plays and playlist entries move to the copy kept.
-                </p>
-                <label class="flex items-center gap-2 text-text-secondary">
-                  <input
-                    type="checkbox"
-                    checked={unmonitorChoice[group.id] ?? false}
-                    onchange={(e) => (unmonitorChoice[group.id] = e.currentTarget.checked)}
-                  />
-                  Tell Lidarr to stop monitoring the removed copies, so it doesn't download them again
-                </label>
-              {/if}
+              <p class="text-text-primary">
+                The copy marked Keep stays. The other {fileCountLabel(group.members.length - 1)} will be
+                deleted from disk, and their likes, plays and playlist entries move to the copy kept.
+              </p>
+              <label class="flex items-center gap-2 text-text-secondary">
+                <input
+                  type="checkbox"
+                  checked={unmonitorChoice[group.id] ?? false}
+                  onchange={(e) => (unmonitorChoice[group.id] = e.currentTarget.checked)}
+                />
+                Tell Lidarr to stop monitoring the removed copies, so it doesn't download them again
+              </label>
               <button
                 type="button"
                 class="text-xs text-text-secondary underline hover:text-text-primary"
@@ -472,23 +456,6 @@
                         Keep · {group.survivor_reason}
                       </span>
                     {/if}
-                    {#if m.lidarr_state === 'tracked'}
-                      <span
-                        class="shrink-0 rounded-full border border-border px-2 py-0.5 text-xs text-text-secondary"
-                        data-testid="lidarr-state"
-                        title="Lidarr maps this file to a track. Removing it would make Lidarr download it again."
-                      >
-                        Lidarr uses this
-                      </span>
-                    {:else if m.lidarr_state === 'unmapped'}
-                      <span
-                        class="shrink-0 rounded-full border border-border px-2 py-0.5 text-xs text-text-muted"
-                        data-testid="lidarr-state"
-                        title="Lidarr holds this file but maps it to no track. Removing it opens no gap."
-                      >
-                        Lidarr doesn't use this
-                      </span>
-                    {/if}
                   </div>
                   <div class="truncate text-xs text-text-secondary">
                     {m.artist_name} · {m.album_title}{position(m) ? ` · ${position(m)}` : ''}

web/src/routes/admin/duplicates/duplicates.test.ts

@@ -66,7 +66,6 @@ function member(id: string, extra: Partial<AdminDuplicatesResponse['groups'][num
     added_at: ago(500 * HOUR),
     like_count: 0,
     play_count: 0,
-    lidarr_state: null,
     disc_number: null,
     track_number: null,
     ...extra
@@ -332,7 +331,9 @@ describe('admin duplicates', () => {
       expect(dismissDuplicateGroup).toHaveBeenCalledWith('g-1');
     });
 
-    test('Resolved automatically lists merges and release changes', async () => {
+    // Release changes stopped with Lidarr (M502), but the ones made before stay
+    // in the history.
+    test('Resolved automatically lists merges and past release changes', async () => {
       renderWith(response(), [
         {
           id: 'a-1',
@@ -340,7 +341,7 @@ describe('admin duplicates', () => {
           created_at: ago(HOUR),
           details: {
             survivor_path: '/music/Gorillaz/Humanz (2017)/03 - Saturnz Barz.mp3',
-            survivor_reason: 'the copy Lidarr tracks',
+            survivor_reason: 'the copy that is not a video rip',
             removed: [{ track_id: 't-2', file_path: '/music/Gorillaz/Humanz (2017)/03 - Saturnz Barz (Official Video).mp3' }]
           }
         },
@@ -358,47 +359,26 @@ describe('admin duplicates', () => {
       ]);
       await fireEvent.click(screen.getByRole('tab', { name: /resolved automatically/i }));
       const items = screen.getAllByTestId('resolved-item').map(text);
-      expect(items[0]).toContain('Kept 03 - Saturnz Barz.mp3 (the copy Lidarr tracks) and removed 1 file');
+      expect(items[0]).toContain('Kept 03 - Saturnz Barz.mp3 (the copy that is not a video rip) and removed 1 file.');
       expect(items[1]).toContain('Lidarr now monitors Digital Media (40 tracks) of Humanz by Gorillaz');
       expect(screen.queryByTestId('duplicate-group')).toBeNull();
     });
   });
 
-  describe("Lidarr's view of each copy", () => {
-    function tracked() {
+  describe("the resolver's note", () => {
+    test('shows above the group it explains', () => {
       const r = response();
-      r.groups[0] = {
-        ...r.groups[0],
-        resolve_note: 'Lidarr tracks every copy as its own track.',
-        members: [member('www-01', { lidarr_state: 'tracked' }), member('www-02', { lidarr_state: 'unmapped' })]
-      };
-      return r;
-    }
-
-    test('each copy says whether Lidarr uses it, and the resolver note shows', () => {
-      renderWith(tracked());
-      expect(screen.getAllByTestId('lidarr-state').map(text)).toEqual([
-        'Lidarr uses this',
-        "Lidarr doesn't use this"
-      ]);
-      expect(text(screen.getByTestId('resolve-note'))).toBe('Lidarr tracks every copy as its own track.');
+      r.groups[0] = { ...r.groups[0], resolve_note: 'Identical audio filed under different titles.' };
+      renderWith(r);
+      expect(text(screen.getByTestId('resolve-note'))).toBe('Identical audio filed under different titles.');
     });
 
-    // Keeping the unmapped copy would remove the one Lidarr uses. The server
-    // refuses that; the confirm says so first and offers no button to press.
-    test('a merge that would remove the copy Lidarr uses is blocked before it is sent', async () => {
-      renderWith(tracked());
+    test('a merge confirms and sends the copy chosen to keep', async () => {
+      renderWith(response());
       await fireEvent.click(screen.getAllByRole('radio')[1]);
       await fireEvent.click(screen.getByRole('button', { name: 'Merge…' }));
-      expect(text(screen.getByTestId('merge-blocked'))).toContain('Lidarr uses a copy this would remove');
-      const confirm = screen.getByRole('button', { name: 'Remove 1 file and merge' }) as HTMLButtonElement;
-      expect(confirm.disabled).toBe(true);
-
-      // Choosing the copy Lidarr uses clears it.
-      await fireEvent.click(screen.getAllByRole('radio')[0]);
-      expect(screen.queryByTestId('merge-blocked')).toBeNull();
       await fireEvent.click(screen.getByRole('button', { name: 'Remove 1 file and merge' }));
-      expect(mergeDuplicateGroup).toHaveBeenCalledWith('g-1', { survivor_track_id: 'www-01', unmonitor: false });
+      expect(mergeDuplicateGroup).toHaveBeenCalledWith('g-1', { survivor_track_id: 'www-02', unmonitor: false });
     });
   });
 });