feat: 国际化(i18n) en/ja/ko + App 内语言切换

主体:多语言支持(简体中文源 + 英/日/韩)
- 基础设施:Localizable.xcstrings(String Catalog,sourceLanguage=zh-Hans)
  + pbxproj developmentRegion/knownRegions 注册 en/ja/ko
- 全部硬编码 Locale("zh_CN") → Locale.current;中文 dateFormat → Date.FormatStyle(跟随系统)
- UI 中文字面量统一为 String(appLoc:)(显式绑定所选语言 bundle+locale,即时切换)
  Text 字面量走环境 \.locale + Bundle 重定向
- 549 个 catalog key 全部 en/ja/ko 翻译完成(0 未翻译)
- App 内语言切换:我的 → 语言(LanguageManager + 即时生效,无需重启)
- 双用预设(症状/监测指标/慢病)本地化:static→computed 避免缓存

注:本提交为 WIP,一并打包了并行进行的功能模块
(HealthExport 健康导出、Security/Face ID 锁、DiaryAssist 日记 AI 辅助)
及 App 图标、CLAUDE.md、docs/scripts。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

康康.xcodeproj/project.pbxproj

@@ -199,11 +199,14 @@
 				};
 			};
 			buildConfigurationList = 5E463CF42FC403BB0089145B /* Build configuration list for PBXProject "康康" */;
-			developmentRegion = en;
+			developmentRegion = "zh-Hans";
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
 				Base,
+				"zh-Hans",
+				ja,
+				ko,
 			);
 			mainGroup = 5E463CF02FC403BB0089145B;
 			minimizedProjectReferenceProxies = 1;
@@ -413,6 +416,10 @@
 				ENABLE_PREVIEWS = YES;
 				ENABLE_USER_SELECTED_FILES = readonly;
 				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_KEY_NSCameraUsageDescription = "康康需要使用相机来扫描你的体检/化验报告。识别全程在本地完成,图片不会上传。";
+				INFOPLIST_KEY_NSFaceIDUsageDescription = "用于解锁你的健康档案,数据始终保留在本机。";
+				INFOPLIST_KEY_NSPhotoLibraryAddUsageDescription = "康康会把识别后的报告原图加密保存到 App 沙盒,不会写入你的相册。";
+				INFOPLIST_KEY_NSPhotoLibraryUsageDescription = "康康需要读取你已有的体检/化验报告照片用于本地识别,不会上传。";
 				"INFOPLIST_KEY_UIApplicationSceneManifest_Generation[sdk=iphoneos*]" = YES;
 				"INFOPLIST_KEY_UIApplicationSceneManifest_Generation[sdk=iphonesimulator*]" = YES;
 				"INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents[sdk=iphoneos*]" = YES;
@@ -458,6 +465,10 @@
 				ENABLE_PREVIEWS = YES;
 				ENABLE_USER_SELECTED_FILES = readonly;
 				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_KEY_NSCameraUsageDescription = "康康需要使用相机来扫描你的体检/化验报告。识别全程在本地完成,图片不会上传。";
+				INFOPLIST_KEY_NSFaceIDUsageDescription = "用于解锁你的健康档案,数据始终保留在本机。";
+				INFOPLIST_KEY_NSPhotoLibraryAddUsageDescription = "康康会把识别后的报告原图加密保存到 App 沙盒,不会写入你的相册。";
+				INFOPLIST_KEY_NSPhotoLibraryUsageDescription = "康康需要读取你已有的体检/化验报告照片用于本地识别,不会上传。";
 				"INFOPLIST_KEY_UIApplicationSceneManifest_Generation[sdk=iphoneos*]" = YES;
 				"INFOPLIST_KEY_UIApplicationSceneManifest_Generation[sdk=iphonesimulator*]" = YES;
 				"INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents[sdk=iphoneos*]" = YES;