feat: the library's folders are set in Admin › Library, and changing a folder moves its tracks with it, keeping their plays, likes and playlists (#6129)

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

internal/importer/importer_test.go

@@ -130,7 +130,7 @@ func newStack(t *testing.T, printer Printer) *stack {
 	}
 	s := &stack{pool: pool, q: q, client: &fakeClient{content: content}, scanner: &fakeScanner{},
 		library: t.TempDir(), want: w, grab: g}
-	s.im = New(pool, s.scanner, fakeCatalogue{}, printer, []string{s.library}, slog.New(slog.NewTextHandler(io.Discard, nil)))
+	s.im = New(pool, s.scanner, fakeCatalogue{}, printer, func() []string { return []string{s.library} }, slog.New(slog.NewTextHandler(io.Discard, nil)))
 	s.im.ClientFor = func(context.Context, string) (downloader.Driver, error) { return s.client, nil }
 	return s
 }