feat: add official subscription quota display for Gemini

- Read Gemini OAuth credentials from macOS Keychain (gemini-cli-oauth)
  or legacy file (~/.gemini/oauth_creds.json)
- Auto-refresh expired access tokens using refresh_token (Google OAuth
  tokens expire in ~1h, unlike Claude/Codex)
- Two-step API: loadCodeAssist for project ID, then retrieveUserQuota
  for per-model quota buckets
- Classify models into Pro/Flash/Flash Lite categories, show min
  remaining fraction as utilization percentage
- Extend isOfficialProvider() for Gemini (no API key + no base URL)
- Parameterize expiredHint i18n key with tool name for all three apps

src/components/SubscriptionQuotaFooter.tsx

@@ -16,6 +16,10 @@ const TIER_I18N_KEYS: Record<string, string> = {
   seven_day: "subscription.sevenDay",
   seven_day_opus: "subscription.sevenDayOpus",
   seven_day_sonnet: "subscription.sevenDaySonnet",
+  // Gemini 模型分类
+  gemini_pro: "subscription.geminiPro",
+  gemini_flash: "subscription.geminiFlash",
+  gemini_flash_lite: "subscription.geminiFlashLite",
 };
 
 /** 根据使用百分比返回颜色 class */
@@ -123,7 +127,7 @@ const SubscriptionQuotaFooter: React.FC<SubscriptionQuotaFooterProps> = ({
             <div>
               <span className="font-medium">{t("subscription.expired")}</span>
               <span className="ml-2 text-amber-500/70 dark:text-amber-400/70">
-                {t("subscription.expiredHint")}
+                {t("subscription.expiredHint", { tool: appId })}
               </span>
             </div>
           </div>

src/components/providers/ProviderCard.tsx

@@ -68,6 +68,15 @@ function isOfficialProvider(provider: Provider, appId: AppId): boolean {
     const apiKey = config?.auth?.OPENAI_API_KEY;
     return !apiKey || (typeof apiKey === "string" && apiKey.trim() === "");
   }
+  if (appId === "gemini") {
+    // 无 GEMINI_API_KEY 且无 GOOGLE_GEMINI_BASE_URL → Google OAuth 官方模式
+    const apiKey = config?.env?.GEMINI_API_KEY;
+    const baseUrl = config?.env?.GOOGLE_GEMINI_BASE_URL;
+    return (
+      (!apiKey || (typeof apiKey === "string" && apiKey.trim() === "")) &&
+      (!baseUrl || (typeof baseUrl === "string" && baseUrl.trim() === ""))
+    );
+  }
   return false;
 }
 

src/i18n/locales/en.json

@@ -2283,11 +2283,14 @@
     "sevenDay": "7-Day",
     "sevenDayOpus": "7-Day (Opus)",
     "sevenDaySonnet": "7-Day (Sonnet)",
+    "geminiPro": "Pro",
+    "geminiFlash": "Flash",
+    "geminiFlashLite": "Flash Lite",
     "utilization": "{{value}}%",
     "resetsIn": "Resets in {{time}}",
     "extraUsage": "Extra Usage",
     "expired": "Session expired",
-    "expiredHint": "Run the claude command to refresh your login",
+    "expiredHint": "Run the {{tool}} command to refresh your login",
     "queryFailed": "Query failed",
     "refresh": "Refresh"
   }

src/i18n/locales/ja.json

@@ -2283,11 +2283,14 @@
     "sevenDay": "7日間",
     "sevenDayOpus": "7日間(Opus)",
     "sevenDaySonnet": "7日間(Sonnet)",
+    "geminiPro": "Pro",
+    "geminiFlash": "Flash",
+    "geminiFlashLite": "Flash Lite",
     "utilization": "{{value}}%",
     "resetsIn": "{{time}}後にリセット",
     "extraUsage": "超過使用量",
     "expired": "セッション期限切れ",
-    "expiredHint": "claudeコマンドを実行してログインを更新してください",
+    "expiredHint": "{{tool}}コマンドを実行してログインを更新してください",
     "queryFailed": "クエリに失敗しました",
     "refresh": "更新"
   }

src/i18n/locales/zh.json

@@ -2283,11 +2283,14 @@
     "sevenDay": "7天",
     "sevenDayOpus": "7天(Opus)",
     "sevenDaySonnet": "7天(Sonnet)",
+    "geminiPro": "Pro",
+    "geminiFlash": "Flash",
+    "geminiFlashLite": "Flash Lite",
     "utilization": "{{value}}%",
     "resetsIn": "{{time}}后重置",
     "extraUsage": "超额用量",
     "expired": "会话已过期",
-    "expiredHint": "请运行 claude 命令刷新登录",
+    "expiredHint": "请运行 {{tool}} 命令刷新登录",
     "queryFailed": "查询失败",
     "refresh": "刷新"
   }