fix(library): expose scan activity and failed analysis file details

services/api/internal/library/store.go

@@ -511,7 +511,7 @@ func (st *Store) Counts(ctx context.Context) (Counts, error) {
 	err := st.pool.QueryRow(ctx, `
 		SELECT (SELECT count(*) FROM artists), (SELECT count(*) FROM albums), (SELECT count(*) FROM tracks),
 			(SELECT count(*) FROM media_files), (SELECT count(*) FROM media_files WHERE missing_since IS NOT NULL),
-			(SELECT count(*) FROM media_files WHERE scan_error IS NOT NULL)`).
+			(SELECT count(*) FROM media_files WHERE scan_error IS NOT NULL AND missing_since IS NULL)`).
 		Scan(&c.Artists, &c.Albums, &c.Tracks, &c.Files, &c.Missing, &c.Errors)
 	if err != nil {
 		return Counts{}, fmt.Errorf("library: counts: %w", err)
@@ -531,7 +531,7 @@ type FileError struct {
 func (st *Store) FileErrors(ctx context.Context, after string, limit int) ([]FileError, error) {
 	rows, err := st.pool.Query(ctx, `
 		SELECT id, source_id, rel_path, scan_error FROM media_files
-		WHERE scan_error IS NOT NULL AND rel_path > $1 ORDER BY rel_path LIMIT $2`, after, limit)
+		WHERE scan_error IS NOT NULL AND missing_since IS NULL AND rel_path > $1 ORDER BY rel_path LIMIT $2`, after, limit)
 	if err != nil {
 		return nil, fmt.Errorf("library: file errors: %w", err)
 	}
@@ -624,7 +624,38 @@ func (st *Store) AnalysisCounts(ctx context.Context) (AnalysisCounts, error) {
 	return c, nil
 }
 
-// RetryFailedAnalysis возвращает неудавшиеся задачи анализа в очередь с нуля попыток.
+// AnalysisError is a failed analysis job with a known file path, when available.
+type AnalysisError struct {
+	TrackID    uuid.UUID
+	Title      string
+	SourceID   *uuid.UUID
+	SourceName *string
+	RelPath    *string
+	Error      string
+}
+
+// AnalysisErrors includes failed jobs even when their file is no longer available.
+func (st *Store) AnalysisErrors(ctx context.Context, after uuid.UUID, limit int) ([]AnalysisError, error) {
+	rows, err := st.pool.Query(ctx, `
+		SELECT t.id, t.title, f.source_id, s.name, f.rel_path, COALESCE(a.error, '')
+		FROM analysis_jobs a JOIN tracks t ON t.id = a.track_id
+		LEFT JOIN LATERAL (
+			SELECT mf.source_id, mf.rel_path FROM media_files mf WHERE mf.track_id = t.id
+			ORDER BY (mf.id = t.primary_file_id) DESC NULLS LAST, (mf.missing_since IS NULL) DESC, mf.id
+			LIMIT 1
+		) f ON true
+		LEFT JOIN library_sources s ON s.id = f.source_id
+		WHERE a.status = 'failed' AND t.id > $1 ORDER BY t.id LIMIT $2`, after, limit)
+	if err != nil {
+		return nil, fmt.Errorf("library: analysis errors: %w", err)
+	}
+	return pgx.CollectRows(rows, func(r pgx.CollectableRow) (AnalysisError, error) {
+		var e AnalysisError
+		return e, r.Scan(&e.TrackID, &e.Title, &e.SourceID, &e.SourceName, &e.RelPath, &e.Error)
+	})
+}
+
+// RetryFailedAnalysis returns failed jobs to the queue with attempts reset.
 func (st *Store) RetryFailedAnalysis(ctx context.Context) (int, error) {
 	tag, err := st.pool.Exec(ctx, `
 		UPDATE analysis_jobs SET status = 'queued', attempts = 0, error = NULL, updated_at = now()