fix(mp): Phase 3 品质打磨 — Loading优化+ErrorBoundary重试上限+登录安全+输入限制

- Loading 组件区分列表底部状态（无spinner）vs 加载中状态
- ErrorBoundary 添加 MAX_RETRIES=3 限制，超出提示重启
- login 页 IS_SIMULATOR 改为 === 'develop' 精确匹配
- login 密码输入 type 改为 safe-password 防截屏
- appointment/create 备注输入添加 maxlength=200
- GuestHome "查看全部" 导航到文章列表页

apps/miniprogram/src/components/ErrorBoundary/index.tsx

@@ -8,20 +8,24 @@ interface Props {
 
 interface State {
   hasError: boolean;
+  retryCount: number;
 }
 
+const MAX_RETRIES = 3;
+
 export default class ErrorBoundary extends Component<Props, State> {
   constructor(props: Props) {
     super(props);
-    this.state = { hasError: false };
+    this.state = { hasError: false, retryCount: 0 };
   }
 
-  static getDerivedStateFromError(): State {
+  static getDerivedStateFromError(): Partial<State> {
     return { hasError: true };
   }
 
   componentDidCatch(error: Error, info: React.ErrorInfo) {
     console.error('[ErrorBoundary]', error, info.componentStack);
+    this.setState((prev) => ({ retryCount: prev.retryCount + 1 }));
   }
 
   handleRetry = () => {
@@ -30,19 +34,24 @@ export default class ErrorBoundary extends Component<Props, State> {
 
   render() {
     if (this.state.hasError) {
+      const exceeded = this.state.retryCount >= MAX_RETRIES;
       return (
         <View className='error-boundary'>
           <View className='error-icon-wrap'>
             <Text className='error-icon-text'>!</Text>
           </View>
           <Text className='error-title'>页面出了点问题</Text>
-          <Text className='error-desc'>请返回重试</Text>
+          <Text className='error-desc'>
-          <View
+            {exceeded ? '请重启小程序' : '请返回重试'}
-            className='error-retry-btn'
+          </Text>
-            onClick={this.handleRetry}
+          {!exceeded && (
-          >
+            <View
-            <Text className='error-retry-text'>重新加载</Text>
+              className='error-retry-btn'
-          </View>
+              onClick={this.handleRetry}
+            >
+              <Text className='error-retry-text'>重新加载</Text>
+            </View>
+          )}
         </View>
       );
     }

apps/miniprogram/src/components/Loading/index.scss

@@ -28,3 +28,12 @@
   font-size: var(--tk-font-body-sm);
   color: var(--tk-text-secondary);
 }
+
+.loading-state--end {
+  padding: 24px 0;
+
+  .loading-state-text {
+    color: var(--tk-text-tertiary);
+    font-size: var(--tk-caption);
+  }
+}

apps/miniprogram/src/components/Loading/index.tsx

@@ -7,9 +7,10 @@ interface LoadingProps {
 }
 
 export default React.memo(function Loading({ text = '加载中...' }: LoadingProps) {
+  const isListEnd = text !== '加载中...' && !text.includes('加载');
   return (
-    <View className='loading-state'>
+    <View className={`loading-state ${isListEnd ? 'loading-state--end' : ''}`}>
-      <View className='loading-spinner' />
+      {!isListEnd && <View className='loading-spinner' />}
       <Text className='loading-state-text'>{text}</Text>
     </View>
   );

apps/miniprogram/src/pages/appointment/create/index.tsx

@@ -272,6 +272,7 @@ export default function AppointmentCreate() {
               className='form-input'
               placeholder='请简要描述症状'
               value={reason}
+              maxlength={200}
               onInput={(e) => setReason(e.detail.value)}
             />
           </View>

apps/miniprogram/src/pages/index/index.tsx

@@ -130,7 +130,7 @@ function GuestHome({ modeClass }: { modeClass: string }) {
           <Text className='guest-section-title'>健康资讯</Text>
           <Text
             className='guest-section-more'
-            onClick={() => Taro.switchTab({ url: '/pages/health/index' })}
+            onClick={() => safeNavigateTo('/pages/article/index')}
           >
             查看全部 ›
           </Text>

apps/miniprogram/src/pages/login/index.tsx

@@ -6,7 +6,7 @@ import { useAuthStore } from '../../stores/auth';
 import './index.scss';
 
 const IS_DEV = process.env.NODE_ENV !== 'production';
-const IS_SIMULATOR = typeof __wxConfig !== 'undefined' && (__wxConfig as any).envVersion !== 'release';
+const IS_SIMULATOR = typeof __wxConfig !== 'undefined' && (__wxConfig as any).envVersion === 'develop';
 
 export default function Login() {
   const [username, setUsername] = useState('');
@@ -158,7 +158,7 @@ export default function Login() {
           <View className="login-field">
             <Input
               className="login-input"
-              type="text"
+              type="safe-password"
               password={!showPassword}
               placeholder="请输入密码"
               placeholderClass="login-placeholder"