update ui and remove mock data

src/features/stores/hooks/useSites.ts

@@ -0,0 +1,17 @@
+'use client';
+
+import {useResource} from '@/shared/hooks/useResource';
+import {siteRepository} from '@/features/stores/repositories/siteRepository';
+import type {Site} from '@/features/stores/types/site';
+import type {Resource} from '@/shared/hooks/useResource';
+
+/**
+ * The estate, from the platform.
+ *
+ * Unscoped on purpose — the site list is what the scope selector is FOR, so it
+ * cannot itself be filtered by the selection. That also means one fetch per
+ * session rather than one per store change.
+ */
+export function useSites(): Resource<Site[]> {
+  return useResource(siteRepository.list());
+}