feat(scripts/data-resources): merge tree + add parent_path filter

- Backend: GET /api/v1/data-resources accepts parent_path; LIKE
  '{ws_id}/%/{escaped}/%' AND NOT LIKE '{ws_id}/%/{escaped}/%/%' on
  StorageObjects.object_key (workspace-wide, escapes _ and %, mirrors
  list_scripts parent_path semantics). 13 new tests in
  test_resources.py (helper unit / SQL compile / SQLite behavioral).
- Frontend: listResources gains parentPath arg, propagated through
  WorkspaceBoundApi + AuthContext binding. WorkspaceTreeGroup title
  count and ScriptExplorer header count now include dataResources.
  memberScriptGroups backfills data-only owners so users with only
  data resources still render a group. loadDataResources accepts an
  optional parentPath, default empty preserves prior behavior.

frontend/app/components/platform/ScriptExplorer.tsx

@@ -94,6 +94,14 @@ export function ScriptExplorer({
       byOwner.set(item.owner_user_id, list);
     }
 
+    // data-only owner(只有数据资源、没有 scripts 的用户)也要出现在分组里,
+    // 因为 data resources 与 scripts 共享同一棵目录树。
+    for (const ownerUserId of dataByOwner.keys()) {
+      if (!byOwner.has(ownerUserId)) {
+        byOwner.set(ownerUserId, []);
+      }
+    }
+
     const groups: {
       user: AuthUser | null;
       scripts: ScriptItem[];
@@ -143,7 +151,7 @@ export function ScriptExplorer({
       <div className="explorer__header">
         <div>
           <h2>脚本目录</h2>
-          <span>{scripts.length} 个工作副本</span>
+          <span>{scripts.length + dataResources.length} 个工作副本</span>
         </div>
         <div className="explorer__actions">
           <button

frontend/app/context/AuthContext.tsx

@@ -223,7 +223,8 @@ export function useApi(): WorkspaceBoundApi {
   return useMemo<WorkspaceBoundApi>(() => ({
    listScripts: (parentPath) => rawApi.listScripts(workspaceId, parentPath),
    countScripts: () => rawApi.countScripts(workspaceId),
-   listResources: (opts) => rawApi.listResources(workspaceId, opts),
+   listResources: (parentPath, opts) =>
+      rawApi.listResources(workspaceId, parentPath, opts),
    createScript: (input) => rawApi.createScript(workspaceId, input),
     uploadScript: (file, parentPath, visibility) =>
       rawApi.uploadScript(workspaceId, file, parentPath, visibility),

frontend/app/features/platform/WorkspaceTree.tsx

@@ -150,7 +150,7 @@ export function WorkspaceTreeGroup({
         <Icon name="chevron" size={14} />
         <Icon name="folder" size={17} />
         <span>{title}</span>
-        <em>{scripts.length}</em>
+        <em>{scripts.length + (dataResources ?? []).length}</em>
       </button>
       {open && (
         <div className="tree-group__items">

frontend/app/features/platform/state/scriptWorkspaceStore.ts

@@ -106,7 +106,7 @@ type State = {
  setKeyword: (keyword: string) => void;
  reset: () => void;
  load: (silent?: boolean) => Promise<void>;
-  loadDataResources: () => Promise<void>;
+  loadDataResources: (parentPath?: string) => Promise<void>;
  selectScript: (id: string | null) => void;
   openTab: (id: string) => void;
   closeTab: (id: string, event?: { stopPropagation: () => void }) => Promise<void>;
@@ -383,11 +383,11 @@ export const useScriptWorkspaceStore = create<State>((set, get) => {
       }
     },
 
-    loadDataResources: async () => {
+    loadDataResources: async (parentPath = "") => {
       const api = requireApi();
       set({ dataResourcesLoading: true });
       try {
-        const list = await api.listResources();
+        const list = await api.listResources(parentPath);
         set({ dataResources: Array.isArray(list) ? list : [] });
       } catch {
         set({ dataResources: [] });

frontend/app/services/api.ts

@@ -437,9 +437,14 @@ export type ResourceItem = {
 
 export async function listResources(
   workspaceId: string,
+  parentPath: string = "",
   opts?: { visibility?: string; keyword?: string },
 ): Promise<ResourceItem[]> {
+  // Empty parentPath omits the query string entirely so the backend's
+  // workspace-wide (root-level) filter is applied symmetrically with
+  // non-empty paths, matching listScripts.
   const parameters = new URLSearchParams();
+  if (parentPath) parameters.set("parent_path", parentPath);
   if (opts?.visibility) parameters.set("visibility", opts.visibility);
   if (opts?.keyword) parameters.set("keyword", opts.keyword);
   const query = parameters.toString();
@@ -1484,7 +1489,8 @@ export type WorkspaceBoundApi = {
   ) => Promise<ScriptItem[]>;
   countScripts: () => Promise<number>;
   listResources: (
-    opts?: Parameters<typeof listResources>[1],
+    parentPath?: Parameters<typeof listResources>[1],
+    opts?: Parameters<typeof listResources>[2],
   ) => Promise<ResourceItem[]>;
   createScript: (
     input: Parameters<typeof createScript>[1],