merge(main): integrate copilot provider support and streaming responses

Merge main into hyper header-case-preservation branch.
Conflicts resolved:
- forwarder.rs: keep ProxyResponse return type (branch core refactor)
- useProviderActions.ts: combine fine-grained proxy reasons (HEAD) with
  Copilot provider detection (main), add proxyReasonCopilot
- i18n (en/zh/ja): retain both reason keys and hint keys, add Copilot
  reason translations

src/config/opencodeProviderPresets.ts

@@ -453,10 +453,10 @@ export const opencodeProviderPresets: OpenCodeProviderPreset[] = [
     websiteUrl: "https://www.kimi.com/coding/docs/",
     apiKeyUrl: "https://platform.moonshot.cn/console/api-keys",
     settingsConfig: {
-      npm: "@ai-sdk/openai-compatible",
+      npm: "@ai-sdk/anthropic",
       name: "Kimi For Coding",
       options: {
-        baseURL: "https://api.kimi.com/v1",
+        baseURL: "https://api.kimi.com/coding/v1",
         apiKey: "",
         setCacheKey: true,
       },
@@ -470,8 +470,8 @@ export const opencodeProviderPresets: OpenCodeProviderPreset[] = [
     templateValues: {
       baseURL: {
         label: "Base URL",
-        placeholder: "https://api.kimi.com/v1",
-        defaultValue: "https://api.kimi.com/v1",
+        placeholder: "https://api.kimi.com/coding/v1",
+        defaultValue: "https://api.kimi.com/coding/v1",
         editorValue: "",
       },
       apiKey: {

src/hooks/useProviderActions.ts

@@ -139,10 +139,18 @@ 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";
+
       // Determine why this provider requires the proxy
       let proxyRequiredReason: string | null = null;
       if (!isProxyRunning && provider.category !== "official") {
-        if (
+        if (isCopilotProvider) {
+          proxyRequiredReason = t("notifications.proxyReasonCopilot", {
+            defaultValue: "使用 GitHub Copilot 作为 Claude 供应商",
+          });
+        } else if (
           provider.meta?.apiFormat === "openai_chat" &&
           activeApp === "claude"
         ) {
@@ -192,8 +200,27 @@ export function useProviderActions(activeApp: AppId, isProxyRunning?: boolean) {
           );
         }
 
-        // OpenCode/OpenClaw: show "added to config" message instead of "switched"
-        {
+        // 根据供应商类型显示不同的成功提示
+        if (
+          activeApp === "claude" &&
+          provider.category !== "official" &&
+          (isCopilotProvider ||
+            provider.meta?.apiFormat === "openai_chat" ||
+            provider.meta?.apiFormat === "openai_responses")
+        ) {
+          // OpenAI format provider: show proxy hint
+          toast.info(
+            isCopilotProvider
+              ? t("notifications.copilotProxyHint")
+              : t("notifications.openAIFormatHint"),
+            {
+              duration: 5000,
+              closeButton: true,
+            },
+          );
+        } else {
+          // 普通供应商：显示切换成功
+          // OpenCode/OpenClaw: show "added to config" message instead of "switched"
           const isMultiProviderApp =
             activeApp === "opencode" || activeApp === "openclaw";
           const messageKey = isMultiProviderApp

src/i18n/locales/en.json

@@ -175,9 +175,12 @@
     "settingsSaved": "Settings saved",
     "settingsSaveFailed": "Failed to save settings: {{error}}",
     "proxyRequiredForSwitch": "This provider {{reason}}, requires the proxy service to work properly. Start the proxy first.",
+    "proxyReasonCopilot": "uses GitHub Copilot as a Claude provider",
     "proxyReasonOpenAIChat": "uses OpenAI Chat API format",
     "proxyReasonOpenAIResponses": "uses OpenAI Responses API format",
     "proxyReasonFullUrl": "has full URL connection mode enabled",
+    "openAIFormatHint": "This provider uses OpenAI-compatible format and requires the proxy service to be enabled",
+    "copilotProxyHint": "GitHub Copilot as a Claude provider always requires the local proxy; the proxy automatically selects Chat Completions or Responses based on the current model.",
     "openLinkFailed": "Failed to open link",
     "openclawModelsRegistered": "Models have been registered to /model list",
     "openclawDefaultModelSet": "Set as default model",

src/i18n/locales/ja.json

@@ -175,9 +175,12 @@
     "settingsSaved": "設定を保存しました",
     "settingsSaveFailed": "設定の保存に失敗しました: {{error}}",
     "proxyRequiredForSwitch": "このプロバイダーは{{reason}}、プロキシサービスが必要です。先にプロキシを起動してください",
+    "proxyReasonCopilot": "GitHub Copilot を Claude プロバイダーとして使用しており",
     "proxyReasonOpenAIChat": "OpenAI Chat API フォーマットを使用しており",
     "proxyReasonOpenAIResponses": "OpenAI Responses API フォーマットを使用しており",
     "proxyReasonFullUrl": "完全 URL 接続モードが有効になっており",
+    "openAIFormatHint": "このプロバイダーは OpenAI 互換フォーマットを使用しており、プロキシサービスの有効化が必要です",
+    "copilotProxyHint": "GitHub Copilot を Claude プロバイダーとして使用する場合、ローカルプロキシが常に必要です。プロキシは現在のモデルに応じて Chat Completions または Responses を自動的に選択します。",
     "openLinkFailed": "リンクを開けませんでした",
     "openclawModelsRegistered": "モデルが /model リストに登録されました",
     "openclawDefaultModelSet": "デフォルトモデルに設定しました",

src/i18n/locales/zh.json

@@ -175,9 +175,12 @@
     "settingsSaved": "设置已保存",
     "settingsSaveFailed": "保存设置失败：{{error}}",
     "proxyRequiredForSwitch": "此供应商{{reason}}，需要代理服务才能正常使用，请先启动代理",
+    "proxyReasonCopilot": "使用 GitHub Copilot 作为 Claude 供应商",
     "proxyReasonOpenAIChat": "使用 OpenAI Chat 接口格式",
     "proxyReasonOpenAIResponses": "使用 OpenAI Responses 接口格式",
     "proxyReasonFullUrl": "开启了完整 URL 连接模式",
+    "openAIFormatHint": "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",
+    "copilotProxyHint": "GitHub Copilot 作为 Claude 供应商时始终需要本地代理；代理会根据当前模型自动选择 Chat Completions 或 Responses。",
     "openLinkFailed": "链接打开失败",
     "openclawModelsRegistered": "模型已注册到 /model 列表",
     "openclawDefaultModelSet": "已设为默认模型",