feat(hooks): improve proxy requirement warnings with specific reasons

- Remove redundant OpenAI format hint toast messages
- Add detailed reason detection for proxy requirements (OpenAI Chat, OpenAI Responses, full URL mode)
- Update i18n files with new reason-specific keys

src/hooks/useProviderActions.ts

@@ -139,21 +139,41 @@ export function useProviderActions(activeApp: AppId, isProxyRunning?: boolean) {
   // 切换供应商
   const switchProvider = useCallback(
     async (provider: Provider) => {
-      const requiresProxyForSwitch =
-        !isProxyRunning &&
-        provider.category !== "official" &&
-        ((activeApp === "claude" &&
-          (provider.meta?.isFullUrl ||
-            provider.meta?.apiFormat === "openai_chat" ||
-            provider.meta?.apiFormat === "openai_responses")) ||
-          (activeApp === "codex" && provider.meta?.isFullUrl));
-
+      // Determine why this provider requires the proxy
+      let proxyRequiredReason: string | null = null;
       if (
-        requiresProxyForSwitch
+        !isProxyRunning &&
+        provider.category !== "official"
       ) {
+        if (
+          provider.meta?.apiFormat === "openai_chat" &&
+          (activeApp === "claude")
+        ) {
+          proxyRequiredReason = t("notifications.proxyReasonOpenAIChat", {
+            defaultValue: "使用 OpenAI Chat 接口格式",
+          });
+        } else if (
+          provider.meta?.apiFormat === "openai_responses" &&
+          (activeApp === "claude")
+        ) {
+          proxyRequiredReason = t("notifications.proxyReasonOpenAIResponses", {
+            defaultValue: "使用 OpenAI Responses 接口格式",
+          });
+        } else if (
+          provider.meta?.isFullUrl &&
+          (activeApp === "claude" || activeApp === "codex")
+        ) {
+          proxyRequiredReason = t("notifications.proxyReasonFullUrl", {
+            defaultValue: "开启了完整 URL 连接模式",
+          });
+        }
+      }
+
+      if (proxyRequiredReason) {
         toast.warning(
           t("notifications.proxyRequiredForSwitch", {
-            defaultValue: "此供应商需要代理服务，请先启动代理",
+            reason: proxyRequiredReason,
+            defaultValue: "此供应商{{reason}}，需要代理服务才能正常使用，请先启动代理",
           }),
         );
         return;
@@ -174,27 +194,8 @@ export function useProviderActions(activeApp: AppId, isProxyRunning?: boolean) {
           );
         }
 
-        // 根据供应商类型显示不同的成功提示
-        if (
-          activeApp === "claude" &&
-          provider.category !== "official" &&
-          (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",
-            }),
-            {
-              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"
+        // OpenCode/OpenClaw: show "added to config" message instead of "switched"
+        {
           const isMultiProviderApp =
             activeApp === "opencode" || activeApp === "openclaw";
           const messageKey = isMultiProviderApp

src/i18n/locales/en.json

@@ -174,9 +174,10 @@
     "deleteFailed": "Failed to delete provider: {{error}}",
     "settingsSaved": "Settings saved",
     "settingsSaveFailed": "Failed to save settings: {{error}}",
-    "openAIChatFormatHint": "This provider uses OpenAI Chat format and requires the proxy service to be enabled",
-    "openAIFormatHint": "This provider uses OpenAI-compatible format and requires the proxy service to be enabled",
-    "proxyRequiredForSwitch": "This provider requires the proxy service. Start the proxy first.",
+    "proxyRequiredForSwitch": "This provider {{reason}}, requires the proxy service to work properly. Start the proxy first.",
+    "proxyReasonOpenAIChat": "uses OpenAI Chat API format",
+    "proxyReasonOpenAIResponses": "uses OpenAI Responses API format",
+    "proxyReasonFullUrl": "has full URL connection mode enabled",
     "openLinkFailed": "Failed to open link",
     "openclawModelsRegistered": "Models have been registered to /model list",
     "openclawDefaultModelSet": "Set as default model",

src/i18n/locales/ja.json

@@ -174,9 +174,10 @@
     "deleteFailed": "プロバイダーの削除に失敗しました: {{error}}",
     "settingsSaved": "設定を保存しました",
     "settingsSaveFailed": "設定の保存に失敗しました: {{error}}",
-    "openAIChatFormatHint": "このプロバイダーは OpenAI Chat 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",
-    "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",
-    "proxyRequiredForSwitch": "このプロバイダーには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",
+    "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",
+    "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",
     "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

@@ -174,9 +174,10 @@
     "deleteFailed": "删除供应商失败：{{error}}",
     "settingsSaved": "设置已保存",
     "settingsSaveFailed": "保存设置失败：{{error}}",
-    "openAIChatFormatHint": "此供应商使用 OpenAI Chat 格式，需要开启代理服务才能正常使用",
-    "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",
-    "proxyRequiredForSwitch": "此供应商需要代理服务，请先启动代理",
+    "proxyRequiredForSwitch": "此供应商{{reason}}，需要代理服务才能正常使用，请先启动代理",
+    "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",
     "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",