feat: 饮食记录逻辑重构 + 通知管理分隔线修复 + 多页面 UI 调整

- 饮食: 新增 DietCommentaryPolicy + diet_record_logic, 饮食记录逻辑抽取复用
- 通知管理: 分隔线改为仿通知中心样式, 跳过图标区域只留文字下方
- 侧边栏: 对话记录操作栏浮层修复 + 常用功能间距收紧
- 智能体: 欢迎卡片去 400ms 延迟 + 胶囊去阴影
- 后端: AI 会话仓库新增方法 + 饮食评论策略 + 健康记录规则调整
- 其他: api_client IP 适配 + 多页面 UI 微调 + 新增测试

health_app/lib/pages/medication/medication_edit_page.dart

@@ -3,7 +3,6 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import '../../core/app_colors.dart';
 import '../../core/app_design_tokens.dart';
-import '../../core/app_module_visuals.dart';
 import '../../core/app_theme.dart';
 import '../../core/navigation_provider.dart';
 import '../../providers/data_providers.dart';
@@ -19,8 +18,6 @@ class MedicationEditPage extends ConsumerStatefulWidget {
 }
 
 class _MedicationEditPageState extends ConsumerState<MedicationEditPage> {
-  static const _visual = AppModuleVisuals.medication;
-
   final _nameCtrl = TextEditingController();
   final _dosageCtrl = TextEditingController();
   final _notesCtrl = TextEditingController();
@@ -202,7 +199,7 @@ class _MedicationEditPageState extends ConsumerState<MedicationEditPage> {
                   decoration: BoxDecoration(
                     color: Colors.white,
                     borderRadius: AppRadius.mdBorder,
-                    border: Border.all(color: _visual.borderColor, width: 1),
+                    border: Border.all(color: AppColors.border, width: 1),
                   ),
                   child: Text(
                     '${_times[i].hour.toString().padLeft(2, '0')}:${_times[i].minute.toString().padLeft(2, '0')}',
@@ -235,19 +232,9 @@ class _MedicationEditPageState extends ConsumerState<MedicationEditPage> {
           const SizedBox(height: 16),
           _field('备注', _notesCtrl, hint: '如：饭后服用、睡前'),
           const SizedBox(height: 32),
-          SizedBox(
-            width: double.infinity,
-            child: ElevatedButton(
-              onPressed: _loading ? null : _save,
-              style: ElevatedButton.styleFrom(
-                backgroundColor: Colors.white,
-                foregroundColor: _visual.color,
-                side: BorderSide(color: _visual.color, width: 1.5),
-                shape: RoundedRectangleBorder(borderRadius: AppRadius.lgBorder),
-                padding: const EdgeInsets.symmetric(vertical: 14),
-              ),
-              child: Text(_loading ? '保存中...' : '保存', style: AppTextStyles.button),
-            ),
+          _GradientOutlineButton(
+            onPressed: _loading ? null : _save,
+            label: _loading ? '保存中...' : '保存',
           ),
           const SizedBox(height: 20),
         ],
@@ -271,7 +258,7 @@ class _MedicationEditPageState extends ConsumerState<MedicationEditPage> {
               fillColor: AppTheme.surface,
               border: _inputBorder(AppColors.border),
               enabledBorder: _inputBorder(AppColors.border),
-              focusedBorder: _inputBorder(_visual.color),
+              focusedBorder: _inputBorder(AppColors.primary),
               contentPadding: const EdgeInsets.symmetric(
                 horizontal: 12,
                 vertical: 12,
@@ -377,6 +364,57 @@ class _PickerBox extends StatelessWidget {
   }
 }
 
+class _GradientOutlineButton extends StatelessWidget {
+  final VoidCallback? onPressed;
+  final String label;
+
+  const _GradientOutlineButton({required this.onPressed, required this.label});
+
+  @override
+  Widget build(BuildContext context) {
+    final enabled = onPressed != null;
+    return Container(
+      width: double.infinity,
+      decoration: BoxDecoration(
+        gradient: enabled ? AppColors.actionOutlineGradient : null,
+        color: enabled ? null : AppColors.border,
+        borderRadius: AppRadius.lgBorder,
+      ),
+      padding: const EdgeInsets.all(1.4),
+      child: Material(
+        color: Colors.white,
+        borderRadius: AppRadius.lgBorder,
+        child: InkWell(
+          onTap: onPressed,
+          borderRadius: AppRadius.lgBorder,
+          child: SizedBox(
+            height: 46,
+            child: Center(
+              child: enabled
+                  ? ShaderMask(
+                      shaderCallback: (bounds) =>
+                          AppColors.actionOutlineGradient.createShader(bounds),
+                      child: Text(
+                        label,
+                        style: AppTextStyles.button.copyWith(
+                          color: Colors.white,
+                        ),
+                      ),
+                    )
+                  : Text(
+                      label,
+                      style: AppTextStyles.button.copyWith(
+                        color: AppColors.textHint,
+                      ),
+                    ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
 String _displayDate(DateTime date) {
   return '${date.year}/${date.month.toString().padLeft(2, '0')}/${date.day.toString().padLeft(2, '0')}';
 }