feat: 三端抽屉重构 + 配色系统更新 + 后台管理页精调 + 键盘抬起组件

## 抽屉重构
- admin_drawer / doctor_drawer / health_drawer 三端抽屉全部重做
- drawer_shell 增强

## 配色系统
- app_colors / app_module_visuals / app_theme 更新
- app.dart 启动流程调整

## 后台管理页
- admin_doctors_page 大幅重构(+251)
- admin_home / doctor_dashboard / doctor_reports / doctor_home / doctor_followups / doctor_settings 精调

## 患者端
- home_page / chat_messages_view / medication_list / notification_center / remaining_pages / exercise_plan / device / diet / consultation 微调

## 新增
- keyboard_lift.dart: 键盘抬起处理组件
- AGENTS.md: agent 指引文档

## 其他
- api_client IP 适配
- app_future_view 增强
- data_providers 调整
- secondary_page_visuals_test 更新

health_app/lib/pages/notifications/notification_center_page.dart

@@ -521,10 +521,19 @@ class _NotificationRow extends StatelessWidget {
                         width: 40,
                         height: 40,
                         decoration: BoxDecoration(
-                          color: visual.lightColor,
+                          color: visual.lightIconSurface
+                              ? AppColors.device
+                              : null,
+                          gradient: visual.lightIconSurface
+                              ? null
+                              : visual.gradient,
                           borderRadius: AppRadius.smBorder,
                         ),
-                        child: Icon(visual.icon, size: 21, color: visual.color),
+                        child: Icon(
+                          visual.icon,
+                          size: 21,
+                          color: visual.iconColor,
+                        ),
                       ),
                       const SizedBox(width: 11),
                       Expanded(
@@ -657,46 +666,66 @@ class _NotificationVisual {
   final IconData icon;
   final Color color;
   final Color lightColor;
+  final Gradient gradient;
+  final Color iconColor;
+  final bool lightIconSurface;
   final String label;
 
-  const _NotificationVisual(this.icon, this.color, this.lightColor, this.label);
+  const _NotificationVisual(
+    this.icon,
+    this.color,
+    this.lightColor,
+    this.gradient,
+    this.iconColor,
+    this.lightIconSurface,
+    this.label,
+  );
 
-  factory _NotificationVisual.fromModule(AppModuleVisual visual) {
+  factory _NotificationVisual.fromModule(
+    AppModuleVisual visual, {
+    Color iconColor = Colors.white,
+    bool lightIconSurface = false,
+  }) {
     return _NotificationVisual(
       visual.icon,
       visual.color,
       visual.lightColor,
+      visual.gradient,
+      iconColor,
+      lightIconSurface,
       visual.label,
     );
   }
 
   factory _NotificationVisual.of(InAppNotification item) {
-    final kind = item.actionType ?? item.type;
+    final kind = (item.actionType ?? item.type).toLowerCase();
     switch (kind) {
       case 'exercise':
+      case 'exercisereminder':
         return _NotificationVisual.fromModule(AppModuleVisuals.exercise);
       case 'health':
-        return item.severity == 'critical'
-            ? const _NotificationVisual(
-                LucideIcons.triangleAlert,
-                AppColors.errorText,
-                AppColors.errorLight,
-                '紧急',
-              )
-            : _NotificationVisual.fromModule(AppModuleVisuals.health);
+      case 'health_record_reminder':
+        return _NotificationVisual.fromModule(AppModuleVisuals.health);
       case 'report':
-        return item.severity == 'error'
-            ? const _NotificationVisual(
-                LucideIcons.fileWarning,
-                AppColors.errorText,
-                AppColors.errorLight,
-                '报告',
-              )
-            : _NotificationVisual.fromModule(AppModuleVisuals.report);
+        return _NotificationVisual.fromModule(AppModuleVisuals.report);
       case 'medication':
+      case 'medicationreminder':
         return _NotificationVisual.fromModule(AppModuleVisuals.medication);
       case 'diet':
         return _NotificationVisual.fromModule(AppModuleVisuals.diet);
+      case 'followup':
+      case 'follow_up_reminder':
+        return _NotificationVisual.fromModule(AppModuleVisuals.followup);
+      case 'doctor':
+      case 'consultation':
+        return _NotificationVisual.fromModule(AppModuleVisuals.doctor);
+      case 'device':
+      case 'bluetooth':
+        return _NotificationVisual.fromModule(
+          AppModuleVisuals.device,
+          iconColor: Colors.white,
+          lightIconSurface: true,
+        );
       default:
         return _NotificationVisual.fromModule(AppModuleVisuals.notification);
     }