feat(mindspace): add achievements showcase with paginated management

Ship the M成果 page with list/delete UX, fix deletePage for incomplete page records, route /space/achievements, and add M成果 under the WeChat M空间 menu.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/api/client.ts

@@ -88,7 +88,9 @@ export {
   getMindSpacePage,
   getMindSpacePageDeletePreview,
   getMindSpacePageLiveRevision,
+  isMindSpacePageNotFoundError,
   listMindSpacePages,
+  listMindSpaceAchievementPages,
   openMindSpaceDraftPreviewWindow,
   regenerateMindSpacePageThumbnail,
   rewriteMindSpacePageDownloadLinks,

src/api/mindspace-pages.ts

@@ -29,6 +29,14 @@ export async function getMindSpacePageDeletePreview(
   return result.data;
 }
 
+export function isMindSpacePageNotFoundError(err: unknown): boolean {
+  return (
+    err instanceof ApiError &&
+    err.status === 404 &&
+    (err.code === 'page_not_found' || err.message === '页面不存在')
+  );
+}
+
 export async function deleteMindSpacePage(
   pageId: string,
   options?: { removeFromPlaza?: boolean },
@@ -61,6 +69,26 @@ export async function listMindSpacePages(options?: {
   return { items: result.data, page: result.page ?? {} };
 }
 
+export async function listMindSpaceAchievementPages(options?: {
+  status?: string;
+  limit?: number;
+  offset?: number;
+  categoryCode?: string;
+  includeStats?: boolean;
+}): Promise<{ items: MindSpacePage[]; page: MindSpaceListPage }> {
+  const params = new URLSearchParams();
+  if (options?.status) params.set('status', options.status);
+  if (options?.limit != null) params.set('limit', String(options.limit));
+  if (options?.offset != null) params.set('offset', String(options.offset));
+  if (options?.categoryCode) params.set('category_code', options.categoryCode);
+  if (options?.includeStats) params.set('include_stats', '1');
+  const query = params.toString() ? `?${params.toString()}` : '';
+  const result = await apiFetch<{ data: MindSpacePage[]; page?: MindSpaceListPage }>(
+    `/mindspace/v1/pages/achievements${query}`,
+  );
+  return { items: result.data, page: result.page ?? {} };
+}
+
 export async function getMindSpacePage(pageId: string): Promise<MindSpacePage> {
   const result = await apiFetch<{ data: MindSpacePage }>(
     `/mindspace/v1/pages/${encodeURIComponent(pageId)}`,