chore: import upstream snapshot with attribution

apps/sim/app/workspace/[workspaceId]/files/prefetch.ts

@@ -0,0 +1,49 @@
+import type { QueryClient } from '@tanstack/react-query'
+import type { WorkspaceFileFolderApi } from '@/lib/api/contracts/workspace-file-folders'
+import type { ListWorkspaceFilesResponse } from '@/lib/api/contracts/workspace-files'
+import { prefetchInternalJson } from '@/app/workspace/[workspaceId]/lib/prefetch-internal-fetch'
+import {
+  WORKSPACE_FILE_FOLDERS_STALE_TIME,
+  workspaceFileFolderKeys,
+} from '@/hooks/queries/workspace-file-folders'
+import {
+  WORKSPACE_FILES_LIST_STALE_TIME,
+  workspaceFilesKeys,
+} from '@/hooks/queries/workspace-files'
+
+/**
+ * Prefetches the Files browser's two lists — workspace files and file folders —
+ * under the same query keys their client hooks (`useWorkspaceFiles`,
+ * `useWorkspaceFileFolders`) use (scope `active`), so the browser paints
+ * populated on first render.
+ *
+ * Both payloads carry `Date` fields, so they go through their routes and cache
+ * the serialized wire shape — see {@link prefetchInternalJson}.
+ */
+export async function prefetchFilesBrowser(
+  queryClient: QueryClient,
+  workspaceId: string
+): Promise<void> {
+  await Promise.all([
+    queryClient.prefetchQuery({
+      queryKey: workspaceFilesKeys.list(workspaceId, 'active'),
+      queryFn: async () => {
+        const data = await prefetchInternalJson<ListWorkspaceFilesResponse>(
+          `/api/workspaces/${workspaceId}/files?scope=active`
+        )
+        return data.success ? data.files : []
+      },
+      staleTime: WORKSPACE_FILES_LIST_STALE_TIME,
+    }),
+    queryClient.prefetchQuery({
+      queryKey: workspaceFileFolderKeys.list(workspaceId, 'active'),
+      queryFn: async () => {
+        const data = await prefetchInternalJson<{ folders?: WorkspaceFileFolderApi[] }>(
+          `/api/workspaces/${workspaceId}/files/folders?scope=active`
+        )
+        return data.folders ?? []
+      },
+      staleTime: WORKSPACE_FILE_FOLDERS_STALE_TIME,
+    }),
+  ])
+}