feat(learn): add family learning assistant API routes and public pages

Wire /learn static delivery, parent/child portal routes, and Tang page build scripts for 103 deploy.

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

server.mjs

@@ -119,6 +119,10 @@ import { attachAsrRoutes } from './asr-proxy.mjs';
 import { attachPageDataRoutes, isLegacyPageDataApiPath } from './page-data-routes.mjs';
 import { isPageDataPublicPath } from './page-data-public-service.mjs';
 import { attachShenmeiOpinionFormRoutes } from './shenmei-opinion-form-routes.mjs';
+import {
+  attachLearnAssistantParentRoutes,
+  attachLearnAssistantPublicRoutes,
+} from './learn-assistant-routes.mjs';
 import { isNativeH5ApiPath } from './policies.mjs';
 import {
   applyMemindRuntimeProfile,
@@ -820,6 +824,7 @@ app.use('/wiki-api', wikiApi);
 const api = express.Router();
 api.use(jsonUnlessMultipart);
 attachShenmeiOpinionFormRoutes(api, { rootDir: __dirname });
+attachLearnAssistantPublicRoutes(api, { rootDir: __dirname });
 
 api.use(createPortalApiAuthMiddleware({
   waitForUserAuthReady: () => userAuthReady,
@@ -841,6 +846,8 @@ api.use(createPortalApiAuthMiddleware({
   logger: console,
 }));
 
+attachLearnAssistantParentRoutes(api, { rootDir: __dirname });
+
 attachPortalImageMakeRuntimeConfigRoute(api, {
   getImageMakeAdminConfigService: () => imageMakeAdminConfigService,
 });