fix: T16 verification cleanups

- golangci-lint: errcheck on resp.Body.Close in Lidarr client + revive
  unused-parameter in delete_test.go
- coverage: 2 error-branch tests added to lidarrquarantine.Service
  (DeleteFile + DeleteViaLidarr track-not-found paths) bring per-package
  coverage to 81.4% (target >=80%)
- search/tracks.test.ts: same TrackMenu name-collision fix T13 applied to
  TrackRow.test.ts — exact-string button match instead of regex

internal/lidarr/delete.go

@@ -64,6 +64,6 @@ func (c *Client) DeleteAlbum(ctx context.Context, lidarrAlbumID int, deleteFiles
 	if err != nil {
 		return err
 	}
-	resp.Body.Close()
+	_ = resp.Body.Close()
 	return nil
 }