Add English localization (device-language based)

Add English as an overlay localization following the device language,
keeping Simplified Chinese as the base/development language. Untranslated
strings fall back to Chinese automatically.

- project.yml: set developmentLanguage zh-Hans and knownRegions (zh-Hans/en/Base)
- Resources/en.lproj/{Localizable,InfoPlist}.strings: ~230 English strings
- Resources/zh-Hans.lproj/InfoPlist.strings: Chinese permission prompts
- Restructure ternary Text/Label and String-typed UI messages so they
  localize (String(localized:), LocalizedStringKey helper params); replace
  a .contains("通过") success check with a dedicated flag
- Localize user-facing model/coordinator/error messages across App and Shared

Internal RuntimeLogger logs and diagnostic/report bodies remain in Chinese.

Shared/ProxyRuntimeMode.swift

@@ -8,8 +8,8 @@ enum ProxyRuntimeMode: String, CaseIterable, Codable, Identifiable {
 
     var displayName: String {
         switch self {
-        case .localWiFi: return "APP模式"
-        case .thirdParty: return "第三方代理模式"
+        case .localWiFi: return String(localized: "APP模式")
+        case .thirdParty: return String(localized: "第三方代理模式")
         }
     }
 }

Shared/ThirdPartyProxyManager.swift

@@ -25,25 +25,25 @@ enum ThirdPartyProxyError: LocalizedError, Equatable {
     var errorDescription: String? {
         switch self {
         case .invalidResponse:
-            return "第三方代理返回了无法识别的数据"
+            return String(localized: "第三方代理返回了无法识别的数据")
         case .moduleNotIntercepted:
-            return "请求未被第三方代理模块拦截，请检查模块、MITM 和代理连接"
+            return String(localized: "请求未被第三方代理模块拦截，请检查模块、MITM 和代理连接")
         case .rejected(let message):
             return message
         case .coordinateMismatch:
-            return "第三方代理保存的坐标与当前选点不一致"
+            return String(localized: "第三方代理保存的坐标与当前选点不一致")
         case .network(let message):
-            return "第三方代理请求失败：\(message)"
+            return String(localized: "第三方代理请求失败：\(message)")
         }
     }
 
     var recoverySuggestion: String {
-        return "检查模块、MITM、证书和代理/VPN连接"
+        return String(localized: "检查模块、MITM、证书和代理/VPN连接")
     }
 
     static func recoverySuggestion(for error: Error) -> String {
         (error as? Self)?.recoverySuggestion
-            ?? "检查模块、MITM、证书和代理/VPN连接"
+            ?? String(localized: "检查模块、MITM、证书和代理/VPN连接")
     }
 }
 
@@ -106,7 +106,7 @@ final class ThirdPartyProxyManager: ObservableObject {
             randomRadius: RandomRadiusStore.shared.isEnabled ? RandomRadiusStore.shared.radius : 0
         ))
         guard response.success else {
-            throw ThirdPartyProxyError.rejected(response.error ?? "第三方代理拒绝保存坐标")
+            throw ThirdPartyProxyError.rejected(response.error ?? String(localized: "第三方代理拒绝保存坐标"))
         }
         guard let latitude = response.latitude,
               let longitude = response.longitude,
@@ -127,7 +127,7 @@ final class ThirdPartyProxyManager: ObservableObject {
     func clear() async throws {
         let response = try await perform(action: .clear)
         guard response.success else {
-            throw ThirdPartyProxyError.rejected(response.error ?? "第三方代理清除坐标失败")
+            throw ThirdPartyProxyError.rejected(response.error ?? String(localized: "第三方代理清除坐标失败"))
         }
         activeSettings = nil
         connectionState = .connected(active: false)
@@ -143,7 +143,7 @@ final class ThirdPartyProxyManager: ObservableObject {
         if response.error?.contains("无已保存") == true {
             return false
         }
-        throw ThirdPartyProxyError.rejected(response.error ?? "第三方代理查询失败")
+        throw ThirdPartyProxyError.rejected(response.error ?? String(localized: "第三方代理查询失败"))
     }
 
     private enum Action {
@@ -154,7 +154,7 @@ final class ThirdPartyProxyManager: ObservableObject {
 
     private func perform(action: Action) async throws -> ThirdPartyProxySettingsResponse {
         guard !isRequesting else {
-            throw ThirdPartyProxyError.rejected("已有第三方代理请求正在执行")
+            throw ThirdPartyProxyError.rejected(String(localized: "已有第三方代理请求正在执行"))
         }
         isRequesting = true
         defer { isRequesting = false }
@@ -224,7 +224,7 @@ enum ThirdPartyProxyClient: String, CaseIterable, Identifiable {
     }
 
     var verificationText: String? {
-        self == .shadowrocket ? nil : "配置已提供，尚未验证"
+        self == .shadowrocket ? nil : String(localized: "配置已提供，尚未验证")
     }
 
     var moduleFileName: String {

Shared/VerificationResult.swift

@@ -26,4 +26,18 @@ enum VerificationResult: Equatable, Identifiable {
 
     var isSuccess: Bool { self == .success }
 
+    /// Localized, user-facing title. `id` stays stable for routing/equality.
+    var localizedTitle: String {
+        switch self {
+        case .success: return String(localized: "成功")
+        case .proxyNotRunning: return String(localized: "代理未运行")
+        case .verificationInProgress: return String(localized: "已有验证正在进行")
+        case .verificationSuperseded: return String(localized: "验证已被新位置取代")
+        case .certNotTrusted: return String(localized: "证书未信任")
+        case .wifiProxyNotConfigured: return String(localized: "WiFi代理未配置")
+        case .coordinateWriteFailed: return String(localized: "坐标写入失败")
+        case .patchFailed: return String(localized: "改写验证失败")
+        }
+    }
+
 }