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/Features/Monitor/MonitorMetric.swift

@@ -19,12 +19,12 @@ enum MonitorMetric: String, CaseIterable, Identifiable {
 
     var displayName: String {
         switch self {
-        case .bloodPressure:       return "血压"
-        case .fastingGlucose:      return "空腹血糖"
-        case .postprandialGlucose: return "餐后血糖"
-        case .temperature:         return "体温"
-        case .heartRate:           return "心率"
-        case .spo2:                return "血氧"
+        case .bloodPressure:       return String(appLoc: "血压")
+        case .fastingGlucose:      return String(appLoc: "空腹血糖")
+        case .postprandialGlucose: return String(appLoc: "餐后血糖")
+        case .temperature:         return String(appLoc: "体温")
+        case .heartRate:           return String(appLoc: "心率")
+        case .spo2:                return String(appLoc: "血氧")
         }
     }
 
@@ -45,43 +45,43 @@ enum MonitorMetric: String, CaseIterable, Identifiable {
         case .bloodPressure:
             return [
                 Field(seriesKey: "bp.systolic",
-                      label: "收缩压",
+                      label: String(appLoc: "收缩压"),
                       unit: "mmHg",
                       placeholder: "120",
                       baseRange: 90...140),
                 Field(seriesKey: "bp.diastolic",
-                      label: "舒张压",
+                      label: String(appLoc: "舒张压"),
                       unit: "mmHg",
                       placeholder: "80",
                       baseRange: 60...90),
             ]
         case .fastingGlucose:
             return [Field(seriesKey: "glucose.fasting",
-                          label: "空腹血糖",
+                          label: String(appLoc: "空腹血糖"),
                           unit: "mmol/L",
                           placeholder: "5.0",
                           baseRange: 3.9...6.1)]
         case .postprandialGlucose:
             return [Field(seriesKey: "glucose.postprandial",
-                          label: "餐后 2h",
+                          label: String(appLoc: "餐后 2h"),
                           unit: "mmol/L",
                           placeholder: "6.5",
                           baseRange: 0...7.8)]
         case .temperature:
             return [Field(seriesKey: "temperature",
-                          label: "体温",
+                          label: String(appLoc: "体温"),
                           unit: "°C",
                           placeholder: "36.5",
                           baseRange: 36.0...37.2)]
         case .heartRate:
             return [Field(seriesKey: "heart_rate",
-                          label: "心率",
+                          label: String(appLoc: "心率"),
                           unit: "bpm",
                           placeholder: "72",
                           baseRange: 60...100)]
         case .spo2:
             return [Field(seriesKey: "spo2",
-                          label: "血氧",
+                          label: String(appLoc: "血氧"),
                           unit: "%",
                           placeholder: "98",
                           baseRange: 95...100)]
@@ -101,7 +101,7 @@ extension MonitorMetric {
 
         /// 给 IndicatorRecordSheet 显示在数值旁的「90-140 mmHg」字样。
         func rangeText(_ range: ClosedRange<Double>?) -> String {
-            guard let r = range else { return "无参考范围" }
+            guard let r = range else { return String(appLoc: "无参考范围") }
             let lower = format(r.lowerBound)
             let upper = format(r.upperBound)
             // 餐后血糖 baseRange 是 0...7.8,显示成「<7.8」