fix(miniprogram): 修复多角色找茬测试 V3 发现的 8 个问题

1. EmptyState 默认 emoji 📭 → serif 首字圆形图标（影响 23 处使用）
2. 预约页英文副标题 "Appointment" 移除
3. consultation 页技术错误信息直接渲染到 UI → 用户友好提示
4. auth store restore() 增加 fallback：secureGet 失败时读 wx.getStorageSync
5. request.ts 新增 safeGet()：token/tenantId 读取容错
6. doctor/consultation useMemo 自引用死循环 → Math.ceil(total/20)
7. doctor/alerts 同样自引用 bug 修复
8. doctor/patients 死代码 totalPages + useMemo import 清理

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

@@ -8,11 +8,24 @@
   padding: 120px 40px;
 }
 
-.empty-state-icon {
-  font-size: 80px;
+.empty-state-icon-wrap {
+  width: 120px;
+  height: 120px;
+  border-radius: 50%;
+  background: $surface-alt;
+  display: flex;
+  align-items: center;
+  justify-content: center;
   margin-bottom: 24px;
 }
 
+.empty-state-icon-char {
+  font-family: Georgia, 'Times New Roman', serif;
+  font-size: 48px;
+  font-weight: 600;
+  color: $tx3;
+}
+
 .empty-state-text {
   font-size: 30px;
   color: $tx2;

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

@@ -11,15 +11,18 @@ interface EmptyStateProps {
 }
 
 export default React.memo(function EmptyState({
-  icon = '📭',
+  icon,
   text,
   hint,
   actionText,
   onAction,
 }: EmptyStateProps) {
+  const displayChar = icon || text.charAt(0);
   return (
     <View className='empty-state'>
-      <Text className='empty-state-icon'>{icon}</Text>
+      <View className='empty-state-icon-wrap'>
+        <Text className='empty-state-icon-char'>{displayChar}</Text>
+      </View>
       <Text className='empty-state-text'>{text}</Text>
       {hint && <Text className='empty-state-hint'>{hint}</Text>}
       {actionText && onAction && (