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/pubspec.lock

@@ -33,6 +33,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.13.1"
+  bluez:
+    dependency: transitive
+    description:
+      name: bluez
+      sha256: "61a7204381925896a374301498f2f5399e59827c6498ae1e924aaa598751b545"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.8.3"
   boolean_selector:
     dependency: transitive
     description:
@@ -270,6 +278,54 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.5.2"
+  flutter_blue_plus:
+    dependency: "direct main"
+    description:
+      name: flutter_blue_plus
+      sha256: "69a8c87c11fc792e8cf0f997d275484fbdb5143ac9f0ac4d424429700cb4e0ed"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.36.8"
+  flutter_blue_plus_android:
+    dependency: transitive
+    description:
+      name: flutter_blue_plus_android
+      sha256: "6f7fe7e69659c30af164a53730707edc16aa4d959e4c208f547b893d940f853d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.4"
+  flutter_blue_plus_darwin:
+    dependency: transitive
+    description:
+      name: flutter_blue_plus_darwin
+      sha256: "682982862c1d964f4d54a3fb5fccc9e59a066422b93b7e22079aeecd9c0d38f8"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.3"
+  flutter_blue_plus_linux:
+    dependency: transitive
+    description:
+      name: flutter_blue_plus_linux
+      sha256: "56b0c45edd0a2eec8f85bd97a26ac3cd09447e10d0094fed55587bf0592e3347"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.3"
+  flutter_blue_plus_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_blue_plus_platform_interface
+      sha256: "84fbd180c50a40c92482f273a92069960805ce324e3673ad29c41d2faaa7c5c2"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.0"
+  flutter_blue_plus_web:
+    dependency: transitive
+    description:
+      name: flutter_blue_plus_web
+      sha256: a1aceee753d171d24c0e0cdadb37895b5e9124862721f25f60bb758e20b72c99
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.0.2"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -685,6 +741,54 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.3.0"
+  permission_handler:
+    dependency: "direct main"
+    description:
+      name: permission_handler
+      sha256: "59adad729136f01ea9e35a48f5d1395e25cba6cea552249ddbe9cf950f5d7849"
+      url: "https://pub.dev"
+    source: hosted
+    version: "11.4.0"
+  permission_handler_android:
+    dependency: transitive
+    description:
+      name: permission_handler_android
+      sha256: d3971dcdd76182a0c198c096b5db2f0884b0d4196723d21a866fc4cdea057ebc
+      url: "https://pub.dev"
+    source: hosted
+    version: "12.1.0"
+  permission_handler_apple:
+    dependency: transitive
+    description:
+      name: permission_handler_apple
+      sha256: e20daf680eef1ca62ffe8c8c526b778cc386d50137c77ac71c8ec9c88c13fb9d
+      url: "https://pub.dev"
+    source: hosted
+    version: "9.4.9"
+  permission_handler_html:
+    dependency: transitive
+    description:
+      name: permission_handler_html
+      sha256: "38f000e83355abb3392140f6bc3030660cfaef189e1f87824facb76300b4ff24"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.1.3+5"
+  permission_handler_platform_interface:
+    dependency: transitive
+    description:
+      name: permission_handler_platform_interface
+      sha256: eb99b295153abce5d683cac8c02e22faab63e50679b937fa1bf67d58bb282878
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.3.0"
+  permission_handler_windows:
+    dependency: transitive
+    description:
+      name: permission_handler_windows
+      sha256: "1a790728016f79a41216d88672dbc5df30e686e811ad4e698bfc51f76ad91f1e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.1"
   petitparser:
     dependency: transitive
     description:
@@ -741,6 +845,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.2.1"
+  rxdart:
+    dependency: transitive
+    description:
+      name: rxdart
+      sha256: "5c3004a4a8dbb94bd4bf5412a4def4acdaa12e12f269737a5751369e12d1a962"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.28.0"
   serial_csv:
     dependency: transitive
     description: