feat(health): wire H5 health page, WeChat channel, and observation API.

Expose /health and /api/health/observations behind MEMIND_HEALTH_ENABLED, redirect ordinary chat health intents without persisting, and run a dedicated WeChat menu flow with confirm-before-write semantics.

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

server.mjs

@@ -74,6 +74,9 @@ import { attachPortalUserMemoryRoutes } from './server/portal-user-memory-routes
 import { attachPortalUserModelRoutes } from './server/portal-user-model-routes.mjs';
 import { attachPortalTemporalRecallRoutes } from './server/portal-temporal-recall-routes.mjs';
 import { attachPortalGoalRunRoutes } from './server/portal-goal-run-routes.mjs';
+import { attachPortalHealthRoutes } from './server/portal-health-routes.mjs';
+import { createHealthChannelSessionStore } from './health-channel-session-store.mjs';
+import { createInMemoryHealthObservationStore } from './health-observation-store.mjs';
 import { assertMindSpaceRoute, mindspaceFlags } from './mindspace-flags.mjs';
 import { loadMindSpaceConfigCached } from './mindspace-config.mjs';
 import { createMindspaceSeoDiscoveryService } from './mindspace-seo-discovery-service.mjs';
@@ -322,6 +325,8 @@ let subscriptionService = null;
 let wechatPayClient = null;
 let wechatOAuthService = null;
 let wechatMpService = null;
+const healthObservationStore = createInMemoryHealthObservationStore();
+const healthChannelStore = createHealthChannelSessionStore();
 let notificationDispatcher = null;
 let scheduleService = null;
 let scheduledTaskService = null;
@@ -583,6 +588,8 @@ async function bootstrapUserAuth() {
         apiSecret: API_SECRET,
         mindSpacePages,
         mindSpacePageLiveEdit,
+        healthChannelStore,
+        healthObservationStore,
         logger: console,
       });
     wechatMpService =
@@ -905,6 +912,12 @@ attachPortalGoalRunRoutes(api, {
   env: process.env,
 });
 
+attachPortalHealthRoutes({
+  api,
+  observationStore: healthObservationStore,
+  env: process.env,
+});
+
 attachPortalMindSpaceSpaceRoutes(api, {
   getMindSpace: () => mindSpace,
   getScheduleService: () => scheduleService,