feat(mp): 小程序功能完善 — 服务层扩展 + 页面优化

- 新增 actionInbox 服务层（待办事项列表/线程查询）
- consultation 服务扩展（会话详情/发送消息）
- 多页面代码优化（profile/messages/health/article）
- 新增 navigate 工具函数

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

@@ -20,12 +20,12 @@ interface NotificationItem {
   read?: boolean;
 }
 
-const NOTIFY_ICONS: Record<string, { icon: string; bg: string; color: string }> = {
-  appointment: { icon: '约', bg: '#F0DDD4', color: '#C4623A' },
-  alert: { icon: '警', bg: '#FFF3E0', color: '#C4873A' },
-  followup: { icon: '随', bg: '#E8F0E8', color: '#5B7A5E' },
-  points: { icon: '分', bg: '#F0DDD4', color: '#C4623A' },
-  report: { icon: '报', bg: '#E8F0E8', color: '#5B7A5E' },
+const NOTIFY_ICONS: Record<string, { icon: string; cls: string }> = {
+  appointment: { icon: '约', cls: 'notify-type-appointment' },
+  alert: { icon: '警', cls: 'notify-type-alert' },
+  followup: { icon: '随', cls: 'notify-type-followup' },
+  points: { icon: '分', cls: 'notify-type-points' },
+  report: { icon: '报', cls: 'notify-type-report' },
 };
 
 export default function Messages() {
@@ -68,6 +68,7 @@ export default function Messages() {
       if (isRefresh) {
         if (tab === 'consultation') setSessions([]);
         else setNotifications([]);
+        Taro.showToast({ title: '加载失败，下拉重试', icon: 'none' });
       }
     } finally {
       setLoading(false);
@@ -202,8 +203,8 @@ export default function Messages() {
                 const isUnread = !n.read;
                 return (
                   <View key={n.id} className={`notify-card ${isUnread ? '' : 'notify-card-muted'}`}>
-                    <View className='notify-icon' style={`background:${cfg.bg};`}>
-                      <Text className='notify-icon-char' style={`color:${cfg.color};`}>{cfg.icon}</Text>
+                    <View className={`notify-icon ${cfg.cls}`}>
+                      <Text className={`notify-icon-char ${cfg.cls}`}>{cfg.icon}</Text>
                     </View>
                     <View className='notify-body'>
                       <View className='notify-row'>