perf: batch label stats query + fix scoped thumb

web/src/lib/services/photoprism.ts

@@ -713,7 +713,9 @@ export async function listLabels(): Promise<PpLabel[]> {
 	const { data } = await sidecar.get<PpLabel[]>('/api/sidecar/labels', {
 		params: { count: 1000, order: 'count', all: true, perPage: 1000 }
 	});
-	return filterByUserPhotos(data, (l) => `label:${l.Slug}`);
+	// Sidecar already filters to the user's scope and sets correct counts +
+	// thumbs in one DB query — no need to probe each label individually.
+	return data;
 }
 
 // ── Subjects (people / face recognition) ────────────────────────────────────