feat: 通知推送/免打扰偏好 + 饮食记录侧滑删除修复 + 聊天交互优化

- 通知: 新增推送开关/免打扰时段偏好持久化 + EF 迁移; 通知管线支持免打扰过滤
- 饮食: 侧滑删除 confirmDismiss 按方向放行(修复删不掉); 新增 diet_nutrition_widgets; 饮食录入页重构
- 聊天: 智能体胶囊点击锁防误触; 流式状态 select 优化; 卡片入场动画
- 主页: 消息列表提取 _HomeMessages + 侧滑手势打开抽屉
- 其他: api_client IP 适配; 通知/用药/饮食端点微调; 测试更新

health_app/lib/pages/diet/diet_nutrition_widgets.dart

@@ -0,0 +1,156 @@
+import 'dart:math' as math;
+
+import 'package:flutter/material.dart';
+
+import '../../core/app_colors.dart';
+
+class DietPalette {
+  DietPalette._();
+
+  static const primary = Color(0xFF6476E8);
+  static const primarySoft = Color(0xFFEEF0FF);
+  static const protein = Color(0xFF38A77B);
+  static const carbs = Color(0xFF4E91D8);
+  static const fat = Color(0xFFE58A76);
+  static const calorie = Color(0xFF6D6FEA);
+  static const gradient = LinearGradient(
+    begin: Alignment.topLeft,
+    end: Alignment.bottomRight,
+    colors: [Color(0xFF8FA7FF), primary],
+  );
+}
+
+class DietCalorieRing extends StatelessWidget {
+  final int calories;
+  final double size;
+
+  const DietCalorieRing({super.key, required this.calories, this.size = 116});
+
+  @override
+  Widget build(BuildContext context) {
+    final progress = (calories / 800).clamp(0.04, 1.0);
+    return Semantics(
+      label: '总热量 $calories 千卡',
+      child: SizedBox.square(
+        dimension: size,
+        child: CustomPaint(
+          painter: _CalorieRingPainter(progress),
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              Text(
+                '$calories',
+                style: const TextStyle(
+                  fontSize: 24,
+                  fontWeight: FontWeight.w800,
+                  color: AppColors.textPrimary,
+                ),
+              ),
+              const Text(
+                '千卡',
+                style: TextStyle(
+                  fontSize: 12,
+                  fontWeight: FontWeight.w600,
+                  color: AppColors.textHint,
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class DietMacroBar extends StatelessWidget {
+  final String label;
+  final int value;
+  final Color color;
+  final double reference;
+
+  const DietMacroBar({
+    super.key,
+    required this.label,
+    required this.value,
+    required this.color,
+    required this.reference,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final progress = (value / reference).clamp(0.0, 1.0);
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Row(
+          children: [
+            Text(
+              label,
+              style: const TextStyle(
+                fontSize: 14,
+                fontWeight: FontWeight.w600,
+                color: AppColors.textSecondary,
+              ),
+            ),
+            const Spacer(),
+            Text(
+              '$value g',
+              style: const TextStyle(
+                fontSize: 15,
+                fontWeight: FontWeight.w700,
+                color: AppColors.textPrimary,
+              ),
+            ),
+          ],
+        ),
+        const SizedBox(height: 6),
+        ClipRRect(
+          borderRadius: BorderRadius.circular(999),
+          child: LinearProgressIndicator(
+            minHeight: 5,
+            value: progress,
+            backgroundColor: color.withValues(alpha: 0.12),
+            valueColor: AlwaysStoppedAnimation(color),
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+class _CalorieRingPainter extends CustomPainter {
+  final double progress;
+
+  const _CalorieRingPainter(this.progress);
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    final center = size.center(Offset.zero);
+    final radius = size.shortestSide / 2 - 8;
+    final track = Paint()
+      ..color = DietPalette.primarySoft
+      ..style = PaintingStyle.stroke
+      ..strokeWidth = 9
+      ..strokeCap = StrokeCap.round;
+    final progressPaint = Paint()
+      ..shader = const LinearGradient(
+        colors: [Color(0xFF8FA7FF), DietPalette.calorie],
+      ).createShader(Offset.zero & size)
+      ..style = PaintingStyle.stroke
+      ..strokeWidth = 9
+      ..strokeCap = StrokeCap.round;
+
+    canvas.drawCircle(center, radius, track);
+    canvas.drawArc(
+      Rect.fromCircle(center: center, radius: radius),
+      -math.pi / 2,
+      math.pi * 2 * progress,
+      false,
+      progressPaint,
+    );
+  }
+
+  @override
+  bool shouldRepaint(covariant _CalorieRingPainter oldDelegate) =>
+      oldDelegate.progress != progress;
+}