fix: 修复 Copilot 作为 Claude 时 OpenAI 模型的 Responses 分流 (#1735)

* fix: route copilot claude openai models to responses

* fix(i18n): add copilotProxyHint translation key for all locales

The copilotProxyHint message was using inline defaultValue with Chinese
text, which would show Chinese to English and Japanese users. Added
proper translation keys in zh/en/ja locale files and removed the
hardcoded defaultValue fallback.

---------

Co-authored-by: Jason <farion1231@gmail.com>

src/hooks/useProviderActions.ts

@@ -139,18 +139,20 @@ export function useProviderActions(activeApp: AppId, isProxyRunning?: boolean) {
   // 切换供应商
   const switchProvider = useCallback(
     async (provider: Provider) => {
+      const isCopilotProvider =
+        activeApp === "claude" &&
+        provider.meta?.providerType === "github_copilot";
       const requiresProxyForSwitch =
         !isProxyRunning &&
         provider.category !== "official" &&
         ((activeApp === "claude" &&
-          (provider.meta?.isFullUrl ||
+          (isCopilotProvider ||
+            provider.meta?.isFullUrl ||
             provider.meta?.apiFormat === "openai_chat" ||
             provider.meta?.apiFormat === "openai_responses")) ||
           (activeApp === "codex" && provider.meta?.isFullUrl));
 
-      if (
-        requiresProxyForSwitch
-      ) {
+      if (requiresProxyForSwitch) {
         toast.warning(
           t("notifications.proxyRequiredForSwitch", {
             defaultValue: "此供应商需要代理服务，请先启动代理",
@@ -178,15 +180,15 @@ export function useProviderActions(activeApp: AppId, isProxyRunning?: boolean) {
         if (
           activeApp === "claude" &&
           provider.category !== "official" &&
-          (provider.meta?.apiFormat === "openai_chat" ||
+          (isCopilotProvider ||
+            provider.meta?.apiFormat === "openai_chat" ||
             provider.meta?.apiFormat === "openai_responses")
         ) {
           // OpenAI format provider: show proxy hint
           toast.info(
-            t("notifications.openAIFormatHint", {
-              defaultValue:
-                "此供应商使用 OpenAI 兼容格式，需要开启代理服务才能正常使用",
-            }),
+            isCopilotProvider
+              ? t("notifications.copilotProxyHint")
+              : t("notifications.openAIFormatHint"),
             {
               duration: 5000,
               closeButton: true,