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>

src/components/ChatView.tsx

@@ -1,4 +1,5 @@
 import { useEffect, useMemo, useRef, useState } from 'react';
+import { useNavigate } from 'react-router-dom';
 import { useChat } from '../context/ChatProvider';
 import { INSUFFICIENT_BALANCE_NOTICE } from '../hooks/useTKMindChat';
 import { useGoalRunBanner } from '../hooks/useGoalRunBanner';
@@ -19,6 +20,10 @@ import { ChatHeaderMoreMenu } from './ChatHeaderMoreMenu';
 import { NotificationCenter } from './NotificationCenter';
 import { GoalRunAwaitingBanner } from './GoalRunAwaitingBanner';
 import type { MindSpaceSaveCategory } from '../types';
+import {
+  HEALTH_REDIRECT_COPY,
+  shouldRedirectOrdinaryChatToHealth,
+} from '../../health-intent-rules.mjs';
 
 function RecentSessionRail({
   sessions,
@@ -222,7 +227,9 @@ export function ChatView({
     uploadChatAttachment,
     followAgentRun,
     goalRunEnabled,
+    healthEnabled,
   } = useChat();
+  const navigate = useNavigate();
   const online = useNetworkStatus();
   const goalRunBanner = useGoalRunBanner({
     userId: user?.id,
@@ -312,6 +319,9 @@ export function ChatView({
     ...(onOpenAdmin
       ? [{ id: 'admin', label: '管理', onClick: () => onOpenAdmin() }]
       : []),
+    ...(healthEnabled
+      ? [{ id: 'health', label: '健康', onClick: () => navigate('/health') }]
+      : []),
     ...(onLogout
       ? [{ id: 'logout', label: '登出', onClick: () => onLogout(), danger: true }]
       : []),
@@ -409,6 +419,16 @@ export function ChatView({
                 管理
               </button>
             )}
+            {healthEnabled && (
+              <button
+                type="button"
+                className="ghost-btn"
+                data-analytics-action="open_health"
+                onClick={() => navigate('/health')}
+              >
+                健康
+              </button>
+            )}
             {onOpenSpace && (
               <button
                 ref={spaceButtonRef}
@@ -579,7 +599,12 @@ export function ChatView({
           onGrantedSkillsUpdate={onGrantedSkillsUpdate}
           onOpenRecharge={() => openRecharge(false)}
           taskLoadingTip={taskLoadingTip}
-          onSubmit={(text, imageUrls, previewImageUrls, options) =>
+          onSubmit={(text, imageUrls, previewImageUrls, options) => {
+            if (healthEnabled && shouldRedirectOrdinaryChatToHealth(text) && !options?.selectedChatSkill) {
+              window.alert(HEALTH_REDIRECT_COPY);
+              navigate('/health');
+              return;
+            }
             void submit(
               text,
               {
@@ -593,8 +618,8 @@ export function ChatView({
               },
               imageUrls,
               previewImageUrls,
-            )
-          }
+            );
+          }}
           onUploadImage={(file, onProgress, options) =>
             uploadChatImage(file, onProgress, { messageId: options?.messageId })
           }