feat: 长辈模式（大字大按钮 + 偏好按账号隔离）+ 语音输入（按住说话 + 实时转写 + 后端代理 DashScope ASR + 患者端专用）+ 健康仪表盘背景渐变

health_app/test/audit_fix_guardrails_test.dart

@@ -53,8 +53,8 @@ void main() {
       source.indexOf('class _HeaderIconButton'),
     );
 
-    expect(buttonSource, contains('width: 44'));
-    expect(buttonSource, contains('height: 44'));
+    expect(buttonSource, contains('width: elderMode ? 54 : 44'));
+    expect(buttonSource, contains('height: elderMode ? 54 : 44'));
   });
 
   test('settings logout action is white with dark text', () {

health_app/test/elder_mode_page_test.dart

@@ -0,0 +1,113 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:health_app/core/app_theme.dart';
+import 'package:health_app/core/elder_mode_scope.dart';
+import 'package:health_app/pages/settings/elder_mode_page.dart';
+import 'package:health_app/providers/elder_mode_provider.dart';
+
+class _FakeElderModeNotifier extends ElderModeNotifier {
+  final bool initiallyEnabled;
+
+  _FakeElderModeNotifier(this.initiallyEnabled);
+
+  @override
+  ElderModeState build() => ElderModeState(
+    preferences: ElderModePreferences(enabled: initiallyEnabled),
+    isLoaded: true,
+  );
+
+  @override
+  Future<bool> enable() async {
+    state = state.copyWith(
+      preferences: state.preferences.copyWith(enabled: true),
+    );
+    return true;
+  }
+
+  @override
+  Future<bool> disable() async {
+    state = state.copyWith(
+      preferences: state.preferences.copyWith(enabled: false),
+    );
+    return true;
+  }
+
+  @override
+  Future<bool> setLargeTextEnabled(bool enabled) async {
+    state = state.copyWith(
+      preferences: state.preferences.copyWith(largeTextEnabled: enabled),
+    );
+    return true;
+  }
+
+  @override
+  Future<bool> setVoiceInputEnabled(bool enabled) async {
+    state = state.copyWith(
+      preferences: state.preferences.copyWith(voiceInputEnabled: enabled),
+    );
+    return true;
+  }
+}
+
+class _ElderModeHarness extends ConsumerWidget {
+  const _ElderModeHarness();
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final state = ref.watch(elderModeProvider);
+    final baseTheme = state.isEnabled
+        ? AppTheme.elderLightTheme
+        : AppTheme.lightTheme;
+    return MaterialApp(
+      debugShowCheckedModeBanner: false,
+      theme: baseTheme,
+      home: ElderModeScope(
+        enabled: state.isEnabled,
+        largeTextEnabled: state.isEnabled && state.preferences.largeTextEnabled,
+        child: const ElderModePage(),
+      ),
+    );
+  }
+}
+
+Future<void> _pumpPage(WidgetTester tester, {required bool enabled}) async {
+  tester.view.physicalSize = const Size(390, 844);
+  tester.view.devicePixelRatio = 1;
+  addTearDown(tester.view.resetPhysicalSize);
+  addTearDown(tester.view.resetDevicePixelRatio);
+
+  await tester.pumpWidget(
+    ProviderScope(
+      overrides: [
+        elderModeProvider.overrideWith(() => _FakeElderModeNotifier(enabled)),
+      ],
+      child: const _ElderModeHarness(),
+    ),
+  );
+  await tester.pumpAndSettle();
+}
+
+void main() {
+  testWidgets('长辈模式可立即开启并显示已开启状态', (tester) async {
+    await _pumpPage(tester, enabled: false);
+
+    expect(find.text('开启长辈模式，操作更清晰'), findsOneWidget);
+    expect(find.text('立即开启'), findsOneWidget);
+
+    await tester.tap(find.text('立即开启'));
+    await tester.pumpAndSettle();
+
+    expect(find.text('长辈模式已开启'), findsOneWidget);
+    expect(find.text('大图标和大按钮已启用'), findsOneWidget);
+    expect(tester.takeException(), isNull);
+  });
+
+  testWidgets('长辈模式页面在 390x844 下无布局溢出', (tester) async {
+    await _pumpPage(tester, enabled: true);
+
+    expect(find.text('关闭长辈模式'), findsOneWidget);
+    expect(find.byType(Switch), findsNWidgets(2));
+    expect(tester.takeException(), isNull);
+  });
+}

health_app/test/home_message_order_test.dart

@@ -139,11 +139,11 @@ void main() {
     ).readAsStringSync();
     final drawer = File('lib/widgets/health_drawer.dart').readAsStringSync();
 
-    expect(source, contains('width: 18'));
-    expect(source, contains('height: 18'));
+    expect(source, contains('width: elderMode ? 24 : 18'));
+    expect(source, contains('height: elderMode ? 24 : 18'));
     expect(source, contains('visual.icon,'));
-    expect(source, contains('size: 13'));
-    expect(source, contains('fontSize: 15'));
+    expect(source, contains('size: elderMode ? 17 : 13'));
+    expect(source, contains('fontSize: elderMode ? 17 : 15'));
     expect(source, contains('gradient: selected'));
     expect(source, contains('? AppColors.actionOutlineGradient'));
     expect(source, contains('selected ? null : Colors.transparent'));
@@ -165,9 +165,10 @@ void main() {
     expect(input, contains('LucideIcons.send'));
     expect(input, contains('border: InputBorder.none'));
     expect(input, contains('crossAxisAlignment: CrossAxisAlignment.center'));
+    // 文字模式：附件 / 麦克风 / 发送；语音模式：附件 / 键盘。全部用主渐变。
     expect(
       RegExp('gradient: AppColors.primaryGradient').allMatches(input).length,
-      2,
+      5,
     );
     expect(input, isNot(contains('Border.all(color: AppColors.borderLight)')));
     expect(source, isNot(contains('class _RoundToolButton')));

health_app/test/speech_input_test.dart

@@ -0,0 +1,39 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:health_app/providers/elder_mode_provider.dart';
+import 'package:health_app/services/realtime_speech_service.dart';
+
+void main() {
+  test('实时语音地址保留后端基础路径并切换为 WebSocket', () {
+    expect(
+      buildRealtimeSpeechEndpoint('http://192.168.1.34:5000').toString(),
+      'ws://192.168.1.34:5000/api/speech/realtime',
+    );
+    expect(
+      buildRealtimeSpeechEndpoint(
+        'https://erpapi.datalumina.cn/xiaomai/',
+      ).toString(),
+      'wss://erpapi.datalumina.cn/xiaomai/api/speech/realtime',
+    );
+  });
+
+  test('旧版长辈设置升级后默认启用语音输入', () {
+    final preferences = ElderModePreferences.fromJson({
+      'schemaVersion': 1,
+      'enabled': true,
+      'largeTextEnabled': true,
+    });
+
+    expect(preferences.voiceInputEnabled, isTrue);
+  });
+
+  test('长辈模式语音输入开关可以持久化', () {
+    const preferences = ElderModePreferences(
+      enabled: true,
+      voiceInputEnabled: false,
+    );
+    final restored = ElderModePreferences.fromJson(preferences.toJson());
+
+    expect(restored.enabled, isTrue);
+    expect(restored.voiceInputEnabled, isFalse);
+  });
+}