账户页 Telegram 区块仅付费用户可见，移除过期的频道升级通知和市场监控链接

frontend/components/account/AccountCenter.tsx

@@ -240,8 +240,6 @@ const TELEGRAM_GROUP_URL = String(
 const TELEGRAM_BOT_URL = String(
   process.env.NEXT_PUBLIC_TELEGRAM_BOT_URL || "https://t.me/WeatherQuant_bot",
 ).trim();
-const TELEGRAM_MARKET_CHANNEL_URL = "https://t.me/+hGAk7JsjtdhiOTUx";
-const TELEGRAM_TOPICS_GROUP_URL = "https://t.me/+8vel7rwjZagxODUx";
 const SUBSCRIPTION_HELP_HREF = "/subscription-help";
 const PAYMENT_RECOVERY_STORAGE_KEY = "polyweather:lastPaymentRecovery";
 const PAYMENT_RECOVERY_TTL_MS = 6 * 60 * 60 * 1000;
@@ -731,16 +729,6 @@ export function AccountCenter() {
       telegramHint: isEn
         ? "Send the command below to the polyweather bot to sync notifications and access."
         : "将下方命令发送给polyweather机器人，实现全平台气象查询与权限同步。",
-      telegramUpgradeTitle: isEn
-        ? "Channel Upgrade: New Topics Group Live"
-        : "频道升级通知：新话题群组已上线",
-      telegramUpgradeBody: isEn
-        ? "Real-time airport temperature pushes are migrating to the new PolyWeather Topics group, organized by city for better tracking. Current channel will stop updating and be deleted in 3 days — please join the new group now."
-        : "为了更好地按城市分类推送，后续实时机场温度推送将迁移至新的 PolyWeather Topics 群组。当前频道将在 3 天后停止更新并删除，请及时迁移。",
-      telegramUpgradeFeatures: isEn
-        ? "Independent city topics:"
-        : "支持独立城市话题订阅：",
-      telegramUpgradeJoin: isEn ? "Join New Group" : "加入新群",
       paymentManualSupport: isEn
         ? "If payment succeeds but Pro is still not activated, email yhrsc30@gmail.com. This project is currently maintained by one developer, so manual recovery may be needed in edge cases."
         : "如果付款成功后 Pro 仍未开通，请发邮件到 yhrsc30@gmail.com。当前项目由我一人维护，极少数边缘情况可能需要人工补开。给你带来的不便，敬请谅解！",
@@ -748,9 +736,6 @@ export function AccountCenter() {
         ? "Open Bot (@WeatherQuant_bot)"
         : "打开机器人 (@WeatherQuant_bot)",
       telegramGroupLink: isEn ? "Join Telegram Group" : "加入 Telegram 群组",
-      telegramMarketChannelLink: isEn
-        ? "Join Market Monitor Channel"
-        : "加入市场监控频道",
       copyCommand: isEn ? "Copy command" : "复制命令",
       paymentMgmt: isEn ? "Payment Management" : "支付管理",
       paymentToken: isEn ? "Payment Token" : "支付币种",
@@ -2959,8 +2944,8 @@ export function AccountCenter() {
           )}
         </div>
 
-        {/* Telegram Bot Section */}
-        {showSecondarySections ? (
+        {/* Telegram Bot Section — paid users only */}
+        {showSecondarySections && isSubscribed ? (
           <div className="lg:col-span-12 grid grid-cols-1 md:flex gap-6">
             <section className="flex-1 bg-white/5 border border-white/10 rounded-[2rem] p-8 relative overflow-hidden group">
               <Bot
@@ -2990,33 +2975,6 @@ export function AccountCenter() {
                   </div>
                 ) : null}
 
-                {/* Channel Upgrade / Migration Notice — Pro users only */}
-                {isSubscribed ? (
-                  <div className="mb-6 rounded-2xl border border-cyan-400/30 bg-gradient-to-br from-cyan-500/12 to-blue-500/8 px-5 py-4">
-                    <h4 className="text-sm font-bold text-cyan-300 mb-2 flex items-center gap-1.5">
-                      <Sparkles size={15} /> {copy.telegramUpgradeTitle}
-                    </h4>
-                    <p className="text-slate-300 text-xs leading-relaxed mb-3">
-                      {copy.telegramUpgradeBody}
-                    </p>
-                    <p className="text-slate-400 text-[11px] font-semibold mb-1.5">
-                      {copy.telegramUpgradeFeatures}
-                    </p>
-                    <p className="text-slate-300 text-xs leading-relaxed mb-3">
-                      🇯🇵 Tokyo · 🇰🇷 Seoul · 🇰🇷 Busan · 🇨🇳 Beijing · 🇨🇳 Shanghai · 🇨🇳 Guangzhou · 🇨🇳 Chengdu · 🇨🇳 Wuhan · 🇭🇰 Hong Kong · 🇹🇼 Taipei · 🇸🇬 Singapore · 🇹🇷 Istanbul · 🇫🇮 Helsinki · 🇳🇱 Amsterdam · 🇫🇷 Paris · 🇺🇸 New York · 🇺🇸 Los Angeles · 🇺🇸 Chicago
-                    </p>
-                    <Link
-                      href={TELEGRAM_TOPICS_GROUP_URL}
-                      target="_blank"
-                      rel="noreferrer"
-                      className="inline-flex min-h-9 items-center gap-1.5 rounded-lg border border-cyan-400/40 bg-cyan-500/15 px-4 py-2 text-xs font-bold text-cyan-200 hover:bg-cyan-500/25 transition-colors"
-                    >
-                      {copy.telegramUpgradeJoin}
-                      <ExternalLink size={12} />
-                    </Link>
-                  </div>
-                ) : null}
-
                 <div className="mb-4 flex flex-wrap gap-2">
                   {TELEGRAM_BOT_URL ? (
                     <Link
@@ -3029,17 +2987,6 @@ export function AccountCenter() {
                       <ExternalLink size={12} />
                     </Link>
                   ) : null}
-                  {TELEGRAM_MARKET_CHANNEL_URL ? (
-                    <Link
-                      href={TELEGRAM_MARKET_CHANNEL_URL}
-                      target="_blank"
-                      rel="noreferrer"
-                      className="inline-flex min-h-9 items-center gap-1 rounded-lg border border-emerald-400/30 bg-emerald-500/10 px-3 py-2 text-xs font-semibold text-emerald-200 hover:bg-emerald-500/20"
-                    >
-                      {copy.telegramMarketChannelLink}
-                      <ExternalLink size={12} />
-                    </Link>
-                  ) : null}
                   {TELEGRAM_GROUP_URL ? (
                     <Link
                       href={TELEGRAM_GROUP_URL}