feat: 蓝牙血压计基础架构 + UI配色体系升级

- 新增 AppColors 配色体系（紫蓝渐变 + 超大圆角 + 漂浮卡片）
- 新增 OmronBleService（BLE 扫描/连接/SFLOAT 协议解析）
- 新增 BpReading 数据模型 + 血压数据自动同步后端
- 新增 DeviceScanPage（血压计扫描绑定页）+ DeviceBindPage（已绑定管理页）
- 侧边栏新增"蓝牙设备"入口，ProfilePage 移除设备管理
- Android/iOS BLE 权限配置（BLUETOOTH_SCAN/CONNECT）
- AppTheme 升级：新阴影系统、新语义色、圆角放大

health_app/lib/core/app_theme.dart

@@ -2,65 +2,84 @@ import 'package:flutter/material.dart';
 import 'package:shadcn_ui/shadcn_ui.dart';
 import 'app_colors.dart';
 
-/// 健康管家 — 清爽紫蓝风
+/// 健康管家 —— 蚂蚁阿福风格：紫蓝渐变 + 超大圆角 + 漂浮卡片
 class AppTheme {
   AppTheme._();
 
   // ── 主色调 ──
-  static const Color primary      = AppColors.primaryPurple;
-  static const Color primaryLight = AppColors.iconBackground;
-  static const Color primaryDark  = AppColors.iconColor;
-  static const Color primaryGlow  = AppColors.purpleGradientStart;
+  static const Color primary = AppColors.primary;
+  static const Color primaryLight = AppColors.primaryLight;
+  static const Color primaryDark = AppColors.primaryDark;
+  static const Color primaryMid = AppColors.primaryMid;
+  static const Color accent = AppColors.accentCyan;
+  static const Color info = AppColors.accentCyan;
 
   // ── 中性色 ──
-  static const Color bg       = AppColors.backgroundSecondary;
-  static const Color surface  = AppColors.cardBackground;
-  static const Color text     = AppColors.textPrimary;
-  static const Color textSub  = AppColors.textSecondary;
+  static const Color bg = AppColors.background;
+  static const Color bgSoft = AppColors.backgroundSoft;
+  static const Color surface = AppColors.cardBackground;
+  static const Color surfaceInner = AppColors.cardInner;
+  static const Color text = AppColors.textPrimary;
+  static const Color textSub = AppColors.textSecondary;
   static const Color textHint = AppColors.textHint;
-  static const Color border   = AppColors.border;
-  static const Color divider  = AppColors.borderLight;
+  static const Color border = AppColors.border;
+  static const Color divider = AppColors.borderLight;
 
   // ── 语义色 ──
   static const Color success = AppColors.success;
-  static const Color error   = AppColors.error;
+  static const Color successLight = AppColors.successLight;
+  static const Color error = AppColors.error;
+  static const Color errorLight = AppColors.errorLight;
   static const Color warning = AppColors.warning;
-  static const Color accent  = AppColors.primaryBlue;
-  static const Color info    = AppColors.primaryBlue;
+  static const Color warningLight = AppColors.warningLight;
 
-  // ── 圆角 ──
-  static const double rXs  = 6;
-  static const double rSm  = 10;
-  static const double rMd  = 14;
-  static const double rLg  = 20;
-  static const double rXl  = 28;
+  // ── 圆角（阿福风格：超大圆角）──
+  static const double rXs = 8;
+  static const double rSm = 12;
+  static const double rMd = 18;
+  static const double rLg = 24;
+  static const double rXl = 32;
   static const double rPill = 999;
 
   // ── 间距 ──
-  static const double sXs  = 4;
-  static const double sSm  = 8;
-  static const double sMd  = 12;
-  static const double sLg  = 16;
-  static const double sXl  = 20;
+  static const double sXs = 4;
+  static const double sSm = 8;
+  static const double sMd = 12;
+  static const double sLg = 16;
+  static const double sXl = 20;
   static const double sXxl = 28;
 
-  // ── 阴影 ──
-  static BoxShadow get shadowCard =>
-      BoxShadow(color: primary.withAlpha(14), blurRadius: 20, offset: const Offset(0, 4));
-  static BoxShadow get shadowLight =>
-      BoxShadow(color: primary.withAlpha(8), blurRadius: 12, offset: const Offset(0, 2));
-  static BoxShadow get shadowElevated =>
-      BoxShadow(color: primary.withAlpha(20), blurRadius: 30, offset: const Offset(0, 8));
+  // ── 阴影（淡紫柔和阴影）──
+  static BoxShadow get shadowCard => BoxShadow(
+        color: AppColors.primary.withOpacity(0.08),
+        blurRadius: 24,
+        offset: const Offset(0, 8),
+      );
+  static BoxShadow get shadowLight => BoxShadow(
+        color: AppColors.primary.withOpacity(0.05),
+        blurRadius: 16,
+        offset: const Offset(0, 4),
+      );
+  static BoxShadow get shadowElevated => BoxShadow(
+        color: AppColors.primary.withOpacity(0.15),
+        blurRadius: 32,
+        offset: const Offset(0, 10),
+      );
+  static BoxShadow get shadowButton => BoxShadow(
+        color: AppColors.primary.withOpacity(0.25),
+        blurRadius: 16,
+        offset: const Offset(0, 6),
+      );
 
   // ── 智能体配色 ──
   static const Map<String, Color> agentColors = {
-    'default':      AppColors.iconBackground,
-    'consultation': Color(0xFFE0F0FF),
-    'health':       Color(0xFFE8FFE8),
-    'diet':         Color(0xFFFFF0E0),
-    'medication':   Color(0xFFFFE8EC),
-    'report':       Color(0xFFE8F0FF),
-    'exercise':     Color(0xFFF0E8FF),
+    'default': AppColors.primaryLight,
+    'consultation': Color(0xFFE0E7FF),
+    'health': Color(0xFFDCFCE7),
+    'diet': Color(0xFFFEF3C7),
+    'medication': Color(0xFFFCE7F3),
+    'report': Color(0xFFDBEAFE),
+    'exercise': Color(0xFFEDE9FE),
   };
 
   static Color agentLight(String? name) => agentColors[name] ?? primaryLight;
@@ -71,19 +90,26 @@ class AppTheme {
         colorScheme: ColorScheme.fromSeed(
           seedColor: primary,
           primary: primary,
-          surface: bg,
+          primaryContainer: primaryLight,
+          onPrimary: Colors.white,
+          secondary: accent,
+          surface: surface,
+          background: bg,
           brightness: Brightness.light,
         ),
         scaffoldBackgroundColor: bg,
+        splashColor: Colors.transparent,
+        highlightColor: Colors.transparent,
+        hoverColor: primaryLight.withOpacity(0.5),
         fontFamily: null,
 
-        appBarTheme: const AppBarTheme(
-          backgroundColor: surface,
+        appBarTheme: AppBarTheme(
+          backgroundColor: bg,
           foregroundColor: text,
           elevation: 0,
-          centerTitle: true,
+          centerTitle: false,
           scrolledUnderElevation: 0,
-          titleTextStyle: TextStyle(fontSize: 23, fontWeight: FontWeight.w600, color: text),
+          titleTextStyle: TextStyle(fontSize: 22, fontWeight: FontWeight.w700, color: text),
         ),
 
         cardTheme: CardThemeData(
@@ -95,7 +121,7 @@ class AppTheme {
 
         inputDecorationTheme: InputDecorationTheme(
           filled: true,
-          fillColor: bg,
+          fillColor: bgSoft,
           contentPadding: const EdgeInsets.symmetric(horizontal: sLg, vertical: 16),
           border: OutlineInputBorder(borderRadius: BorderRadius.circular(rMd), borderSide: BorderSide.none),
           enabledBorder: OutlineInputBorder(borderRadius: BorderRadius.circular(rMd), borderSide: BorderSide.none),
@@ -103,7 +129,7 @@ class AppTheme {
             borderRadius: BorderRadius.circular(rMd),
             borderSide: const BorderSide(color: primary, width: 2),
           ),
-          hintStyle: const TextStyle(color: textHint, fontSize: 20),
+          hintStyle: TextStyle(color: textHint, fontSize: 16),
         ),
 
         elevatedButtonTheme: ElevatedButtonThemeData(
@@ -112,28 +138,29 @@ class AppTheme {
             foregroundColor: Colors.white,
             minimumSize: const Size(double.infinity, 56),
             shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(rPill)),
-            textStyle: const TextStyle(fontSize: 21, fontWeight: FontWeight.w600),
+            textStyle: const TextStyle(fontSize: 17, fontWeight: FontWeight.w600),
             elevation: 0,
+            shadowColor: primary.withOpacity(0.3),
           ),
         ),
 
         dialogTheme: DialogThemeData(shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(rXl))),
 
         textTheme: const TextTheme(
-          headlineLarge: TextStyle(fontSize: 32, fontWeight: FontWeight.w700, color: text, letterSpacing: -0.5),
-          titleLarge:  TextStyle(fontSize: 23, fontWeight: FontWeight.w600, color: text),
-          titleMedium: TextStyle(fontSize: 21, fontWeight: FontWeight.w600, color: text),
-          bodyLarge:   TextStyle(fontSize: 21, color: text, height: 1.5),
-          bodyMedium:  TextStyle(fontSize: 20, color: textSub, height: 1.4),
-          labelMedium: TextStyle(fontSize: 18, color: textSub),
-          labelSmall:  TextStyle(fontSize: 16, color: textHint),
+          headlineLarge: TextStyle(fontSize: 28, fontWeight: FontWeight.w700, color: text, letterSpacing: -0.3),
+          titleLarge: TextStyle(fontSize: 22, fontWeight: FontWeight.w700, color: text),
+          titleMedium: TextStyle(fontSize: 20, fontWeight: FontWeight.w600, color: text),
+          bodyLarge: TextStyle(fontSize: 16, color: text, height: 1.5),
+          bodyMedium: TextStyle(fontSize: 14, color: textSub, height: 1.4),
+          labelMedium: TextStyle(fontSize: 13, color: textSub),
+          labelSmall: TextStyle(fontSize: 12, color: textHint),
         ),
       );
 
-  // ── Shadcn UI 主题 ──
+  // ── Shadcn UI 主题（紫蓝系） ──
   static ShadThemeData get shadTheme => ShadThemeData(
         brightness: Brightness.light,
-        colorScheme: const ShadVioletColorScheme.light(
+        colorScheme: ShadVioletColorScheme.light(
           background: bg,
           foreground: text,
           card: surface,
@@ -142,9 +169,9 @@ class AppTheme {
           popoverForeground: text,
           primary: primary,
           primaryForeground: Colors.white,
-          secondary: divider,
-          secondaryForeground: text,
-          muted: divider,
+          secondary: primaryLight,
+          secondaryForeground: primaryDark,
+          muted: bgSoft,
           mutedForeground: textSub,
           accent: accent,
           accentForeground: Colors.white,
@@ -153,7 +180,7 @@ class AppTheme {
           border: border,
           input: border,
           ring: primary,
-          selection: primaryGlow,
+          selection: primaryLight,
         ),
         radius: BorderRadius.circular(rMd),
       );