feat: 添加用户登录和法律协议页面

- 新增登录页面，支持 Apple 登录和游客登录功能
- 添加用户协议和隐私政策页面，用户需同意后才能登录
- 更新首页逻辑，首次进入时自动跳转到登录页面
- 修改个人信息页面，移除单位选择功能，统一使用 kg 和 cm
- 更新依赖，添加 expo-apple-authentication 库以支持 Apple 登录
- 更新布局以适应新功能的展示和交互

ios/Podfile.lock

@@ -33,6 +33,8 @@ PODS:
     - ReactCommon/turbomodule/bridging
     - ReactCommon/turbomodule/core
     - Yoga
+  - ExpoAppleAuthentication (6.4.2):
+    - ExpoModulesCore
   - ExpoAsset (11.1.7):
     - ExpoModulesCore
   - ExpoBlur (14.1.5):
@@ -2156,6 +2158,7 @@ DEPENDENCIES:
   - EXConstants (from `../node_modules/expo-constants/ios`)
   - EXImageLoader (from `../node_modules/expo-image-loader/ios`)
   - Expo (from `../node_modules/expo`)
+  - ExpoAppleAuthentication (from `../node_modules/expo-apple-authentication/ios`)
   - ExpoAsset (from `../node_modules/expo-asset/ios`)
   - ExpoBlur (from `../node_modules/expo-blur/ios`)
   - ExpoFileSystem (from `../node_modules/expo-file-system/ios`)
@@ -2273,6 +2276,8 @@ EXTERNAL SOURCES:
     :path: "../node_modules/expo-image-loader/ios"
   Expo:
     :path: "../node_modules/expo"
+  ExpoAppleAuthentication:
+    :path: "../node_modules/expo-apple-authentication/ios"
   ExpoAsset:
     :path: "../node_modules/expo-asset/ios"
   ExpoBlur:
@@ -2465,6 +2470,7 @@ SPEC CHECKSUMS:
   EXConstants: 98bcf0f22b820f9b28f9fee55ff2daededadd2f8
   EXImageLoader: 4d3d3284141f1a45006cc4d0844061c182daf7ee
   Expo: a40d525c930dd1c8a158e082756ee071955baccb
+  ExpoAppleAuthentication: 8a661b6f4936affafd830f983ac22463c936dad5
   ExpoAsset: ef06e880126c375f580d4923fdd1cdf4ee6ee7d6
   ExpoBlur: 3c8885b9bf9eef4309041ec87adec48b5f1986a9
   ExpoFileSystem: 7f92f7be2f5c5ed40a7c9efc8fa30821181d9d63

ios/digitalpilates.xcodeproj/project.pbxproj

@@ -21,7 +21,7 @@
 		13B07FB51A68108700A75B9A /* Images.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; name = Images.xcassets; path = digitalpilates/Images.xcassets; sourceTree = "<group>"; };
 		13B07FB61A68108700A75B9A /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = Info.plist; path = digitalpilates/Info.plist; sourceTree = "<group>"; };
 		4D6B8E20DD8E5677F8B2EAA1 /* Pods-digitalpilates.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-digitalpilates.debug.xcconfig"; path = "Target Support Files/Pods-digitalpilates/Pods-digitalpilates.debug.xcconfig"; sourceTree = "<group>"; };
-		7EC44F9488C227087AA8DF97 /* PrivacyInfo.xcprivacy */ = {isa = PBXFileReference; includeInIndex = 1; name = PrivacyInfo.xcprivacy; path = digitalpilates/PrivacyInfo.xcprivacy; sourceTree = "<group>"; };
+		7EC44F9488C227087AA8DF97 /* PrivacyInfo.xcprivacy */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xml; name = PrivacyInfo.xcprivacy; path = digitalpilates/PrivacyInfo.xcprivacy; sourceTree = "<group>"; };
 		83D1B5F0EC906D7A2F599549 /* ExpoModulesProvider.swift */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = sourcecode.swift; name = ExpoModulesProvider.swift; path = "Pods/Target Support Files/Pods-digitalpilates/ExpoModulesProvider.swift"; sourceTree = "<group>"; };
 		AA286B85B6C04FC6940260E9 /* SplashScreen.storyboard */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = file.storyboard; name = SplashScreen.storyboard; path = digitalpilates/SplashScreen.storyboard; sourceTree = "<group>"; };
 		BB2F792C24A3F905000567C9 /* Expo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = Expo.plist; sourceTree = "<group>"; };
@@ -73,7 +73,6 @@
 				4D6B8E20DD8E5677F8B2EAA1 /* Pods-digitalpilates.debug.xcconfig */,
 				EA6A757B2DE1747F7B3664B4 /* Pods-digitalpilates.release.xcconfig */,
 			);
-			name = Pods;
 			path = Pods;
 			sourceTree = "<group>";
 		};
@@ -340,6 +339,7 @@
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = digitalpilates/digitalpilates.entitlements;
 				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = 756WVXJ6MT;
 				ENABLE_BITCODE = NO;
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"$(inherited)",
@@ -376,6 +376,7 @@
 				CLANG_ENABLE_MODULES = YES;
 				CODE_SIGN_ENTITLEMENTS = digitalpilates/digitalpilates.entitlements;
 				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = 756WVXJ6MT;
 				INFOPLIST_FILE = digitalpilates/Info.plist;
 				IPHONEOS_DEPLOYMENT_TARGET = 15.1;
 				LD_RUNPATH_SEARCH_PATHS = (

ios/digitalpilates/digitalpilates.entitlements

@@ -1,10 +1,14 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
-  <dict>
-    <key>com.apple.developer.healthkit</key>
-    <true/>
-    <key>com.apple.developer.healthkit.access</key>
-    <array/>
-  </dict>
-</plist>
+<dict>
+	<key>com.apple.developer.applesignin</key>
+	<array>
+		<string>Default</string>
+	</array>
+	<key>com.apple.developer.healthkit</key>
+	<true/>
+	<key>com.apple.developer.healthkit.access</key>
+	<array/>
+</dict>
+</plist>