feat: 集成 Apple Sign-In + iOS 上线准备

- 后端新增 Apple 登录端点 /api/auth/apple-login
- 新增 AppleTokenValidator 验证 IdentityToken
- User 实体添加 AppleUserId 字段，Phone 改为可空
- 前端添加 sign_in_with_apple 依赖和 Apple 登录按钮
- 统一 Bundle ID 为 com.datalumina.YYA，显示名称为小脉健康
- 配置 DEVELOPMENT_TEAM 和 Sign in with Apple Entitlements
- 补充 NSCamera/NSPhotoLibrary 权限描述
- 生产 API 地址改为 https://erpapi.datalumina.cn/xiaomai
- Flutter 升级至 3.44.6 / Dart 3.12.2

Co-Authored-By: Claude <noreply@anthropic.com>

health_app/ios/Runner.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -0,0 +1,59 @@
+{
+  "pins" : [
+    {
+      "identity" : "dkcamera",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/zhangao0086/DKCamera",
+      "state" : {
+        "branch" : "master",
+        "revision" : "5c691d11014b910aff69f960475d70e65d9dcc96"
+      }
+    },
+    {
+      "identity" : "dkimagepickercontroller",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/zhangao0086/DKImagePickerController",
+      "state" : {
+        "branch" : "4.3.9",
+        "revision" : "0bdfeacefa308545adde07bef86e349186335915"
+      }
+    },
+    {
+      "identity" : "dkphotogallery",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/zhangao0086/DKPhotoGallery",
+      "state" : {
+        "branch" : "master",
+        "revision" : "311c1bc7a94f1538f82773a79c84374b12a2ef3d"
+      }
+    },
+    {
+      "identity" : "sdwebimage",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/SDWebImage/SDWebImage",
+      "state" : {
+        "revision" : "2de3a496eaf6df9a1312862adcfd54acd73c39c0",
+        "version" : "5.21.7"
+      }
+    },
+    {
+      "identity" : "swiftygif",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/kirualex/SwiftyGif.git",
+      "state" : {
+        "revision" : "4430cbc148baa3907651d40562d96325426f409a",
+        "version" : "5.4.5"
+      }
+    },
+    {
+      "identity" : "tocropviewcontroller",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/TimOliver/TOCropViewController",
+      "state" : {
+        "revision" : "d4a6d8100f4b886fdbc8ae399bf144ff3e9afb7e",
+        "version" : "2.8.0"
+      }
+    }
+  ],
+  "version" : 2
+}