fix: 健康档案保存按钮移至右上角 + 5页面补充返回按钮 + API地址修复

- 健康档案: 保存按钮移到AppBar右侧，删除底部按钮和绿色成功SnackBar
- 5个缺失页面补充左上角返回按钮: 健康概览/编辑用药/报告管理/报告详情/报告解读
- api_client.dart: 默认baseUrl改为192.168.1.29 (支持WiFi直连)

backend/src/Health.Infrastructure/AI/prompt_manager.cs

@@ -34,6 +34,16 @@ public sealed class PromptManager
         - 对胸痛、胸闷憋气、呼吸困难、意识异常、晕厥、说话不清、一侧肢体无力、血氧明显偏低、血压或血糖严重异常等情况，优先建议及时就医或急诊评估。
         - 回答用语使用“可能、建议、需要结合医生判断”等表达，避免绝对化结论。
         - 医疗相关分析末尾用一句自然的话提醒：以上为 AI 预分析，不能替代医生诊断和治疗建议。
+
+        回复格式规则（严格遵守）：
+        - 禁止使用 **粗体**、*斜体*、~~删除线~~ 等 Markdown 内联标记
+        - 禁止使用 HTML 标签
+        - 禁止使用 Markdown 表格（|--|--|）
+        - 标题只使用 ### 三级标题，禁止使用 #、##、####
+        - 列表使用 - 开头，每项一行
+        - 数值和单位之间加空格：120 mmHg、6.2 mmol/L
+        - 不要输出任何 $ 开头的占位符
+        - 回复结尾不再重复免责声明，MedicalBoundaryRules 已统一处理
         """;
 
     private const string DefaultPrompt = """

health_app/lib/core/api_client.dart

@@ -4,9 +4,11 @@ import 'package:dio/dio.dart';
 import 'local_database.dart';
 
 /// API 基础地址。可通过 --dart-define=API_BASE_URL=http://host:5000 覆盖。
+/// Android 真机 USB: 先执行 adb reverse tcp:5000 tcp:5000 然后 localhost 即可
+/// Android 真机 WiFi: flutter run --dart-define=API_BASE_URL=http://电脑IP:5000
 const String baseUrl = String.fromEnvironment(
   'API_BASE_URL',
-  defaultValue: 'http://localhost:5000',
+  defaultValue: 'http://192.168.1.29:5000',
 );
 
 class ApiException implements Exception {

health_app/lib/pages/chart/trend_page.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../../core/app_colors.dart';
 import '../../core/app_theme.dart';
+import '../../core/navigation_provider.dart';
 import '../../providers/auth_provider.dart';
 import '../../providers/data_providers.dart';
 
@@ -247,7 +248,11 @@ class _TrendPageState extends ConsumerState<TrendPage> {
   @override
   Widget build(BuildContext context) {
     return GradientScaffold(
-      appBar: AppBar(title: const Text('健康概览'), centerTitle: true),
+      appBar: AppBar(
+        leading: IconButton(icon: const Icon(Icons.arrow_back), onPressed: () => popRoute(ref)),
+        title: const Text('健康概览'),
+        centerTitle: true,
+      ),
       floatingActionButton: FloatingActionButton(
         onPressed: _showAddDialog,
         backgroundColor: _color,

health_app/lib/pages/home/widgets/chat_messages_view.dart

@@ -1243,10 +1243,16 @@ class ChatMessagesView extends ConsumerWidget {
 
   /// 清理 AI 返回文本中的异常占位符（Markdown 格式交给 MarkdownBody 渲染）
   static String _cleanAiText(String text) {
-    return text
-        .replaceAll('\$1', '') // AI 偶尔输出 $1 占位符（正则残留）
-        .replaceAll(RegExp(r'\n{3,}'), '\n\n')
-        .trim();
+    var t = text;
+    // 移除 $1、$2 等占位符
+    t = t.replaceAll(RegExp(r'\$\d+'), '');
+    // 移除残留 HTML 标签
+    t = t.replaceAll(RegExp(r'<[^>]+>'), '');
+    // 行首 # 超过 3 个降为 ###
+    t = t.replaceAllMapped(RegExp(r'^#{4,}\s', multiLine: true), (_) => '### ');
+    // 压缩多余空行
+    t = t.replaceAll(RegExp(r'\n{3,}'), '\n\n');
+    return t.trim();
   }
 
   String _freqLabel(String freq) {

health_app/lib/pages/medication/medication_edit_page.dart

@@ -138,7 +138,10 @@ class _MedicationEditPageState extends ConsumerState<MedicationEditPage> {
   @override
   Widget build(BuildContext context) {
     return GradientScaffold(
-      appBar: AppBar(title: Text(widget.id != null ? '编辑用药' : '添加用药')),
+      appBar: AppBar(
+        leading: IconButton(icon: const Icon(Icons.arrow_back), onPressed: () => popRoute(ref)),
+        title: Text(widget.id != null ? '编辑用药' : '添加用药'),
+      ),
       body: ListView(
         padding: const EdgeInsets.all(16),
         children: [

health_app/lib/pages/remaining_pages.dart

@@ -1381,14 +1381,6 @@ class _HealthArchivePageState extends ConsumerState<HealthArchivePage> {
         'familyHistory': _familyCtrl.text,
       });
       await ref.read(authProvider.notifier).refreshProfile();
-      if (mounted) {
-        ScaffoldMessenger.of(context).showSnackBar(
-          const SnackBar(
-            content: Text('保存成功'),
-            backgroundColor: AppColors.success,
-          ),
-        );
-      }
     } catch (_) {
       if (mounted) {
         ScaffoldMessenger.of(context).showSnackBar(
@@ -1438,6 +1430,21 @@ class _HealthArchivePageState extends ConsumerState<HealthArchivePage> {
           icon: const Icon(Icons.arrow_back, color: AppColors.textPrimary),
           onPressed: () => popRoute(ref),
         ),
+        actions: [
+          _saving
+              ? const Padding(
+                  padding: EdgeInsets.only(right: 16),
+                  child: SizedBox(
+                    width: 24,
+                    height: 24,
+                    child: CircularProgressIndicator(strokeWidth: 2),
+                  ),
+                )
+              : TextButton(
+                  onPressed: _save,
+                  child: const Text('保存', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
+                ),
+        ],
       ),
       body: ListView(
         padding: const EdgeInsets.all(16),
@@ -1525,36 +1532,6 @@ class _HealthArchivePageState extends ConsumerState<HealthArchivePage> {
             const SizedBox(height: 12),
             _F('家族病史', _familyCtrl, hint: '如: 父亲冠心病'),
           ]),
-          const SizedBox(height: 24),
-          Container(
-            decoration: BoxDecoration(
-              borderRadius: BorderRadius.circular(14),
-              gradient: AppColors.primaryGradient,
-            ),
-            padding: const EdgeInsets.all(1.5),
-            child: SizedBox(
-              width: double.infinity,
-              height: 52,
-              child: ElevatedButton(
-                onPressed: _saving ? null : _save,
-                style: ElevatedButton.styleFrom(
-                  backgroundColor: Colors.white,
-                  foregroundColor: AppColors.primary,
-                  shape: RoundedRectangleBorder(
-                    borderRadius: BorderRadius.circular(13),
-                  ),
-                  elevation: 0,
-                ),
-                child: Text(
-                  _saving ? '保存中...' : '保存档案',
-                  style: const TextStyle(
-                    fontSize: 17,
-                    fontWeight: FontWeight.w600,
-                  ),
-                ),
-              ),
-            ),
-          ),
           const SizedBox(height: 40),
         ],
       ),

health_app/lib/pages/report/ai_analysis_page.dart

@@ -31,7 +31,10 @@ class _AiAnalysisPageState extends ConsumerState<AiAnalysisPage> {
 
     if (analysis == null) {
       return GradientScaffold(
-        appBar: AppBar(title: const Text('报告解读')),
+        appBar: AppBar(
+          leading: IconButton(icon: const Icon(Icons.arrow_back), onPressed: () => popRoute(ref)),
+          title: const Text('报告解读'),
+        ),
         body: const Center(
           child: CircularProgressIndicator(color: AppColors.primary),
         ),

health_app/lib/pages/report/report_pages.dart

@@ -351,7 +351,10 @@ class ReportListPage extends ConsumerWidget {
 
     if (state.isAnalyzing) {
       return GradientScaffold(
-        appBar: AppBar(title: const Text('报告管理')),
+        appBar: AppBar(
+          leading: IconButton(icon: const Icon(Icons.arrow_back), onPressed: () => popRoute(ref)),
+          title: const Text('报告管理'),
+        ),
         body: Center(
           child: Column(
             mainAxisSize: MainAxisSize.min,
@@ -720,7 +723,10 @@ class ReportOriginalPage extends StatelessWidget {
   Widget build(BuildContext context) {
     final imageUrl = _absoluteUrl(url);
     return GradientScaffold(
-      appBar: AppBar(title: Text(title)),
+      appBar: AppBar(
+        leading: IconButton(icon: const Icon(Icons.arrow_back), onPressed: () => Navigator.pop(context)),
+        title: Text(title),
+      ),
       body: Center(
         child: InteractiveViewer(
           minScale: 0.7,