@

统一月付价格为 10 USDC 并清理所有 trial 文案

- 默认月付 fallback 从 5U 改为 10U（contract_checkout.py、AccountCenter.tsx）
- 移除 LoginClient / HeaderBar / AccountCenter / UnlockProOverlay 中的试用推广文案
- VPS 同步: PLAN_CATALOG_JSON、GROUP_MEMBER_PRICE_USDC 更新为 10
- SIGNUP_TRIAL_ENABLED=false 保持关闭
@

frontend/components/auth/LoginClient.tsx

@@ -72,9 +72,6 @@ export function LoginClient({ nextPath }: LoginClientProps) {
     signupCheckEmail: isEn
       ? "Sign-up successful. Please verify your email before signing in."
       : "注册成功，请检查邮箱并完成验证后登录。",
-    trialPromo: isEn
-      ? "New users unlock a free 3-day Pro trial after sign-up."
-      : "新用户注册后可免费体验 3 天 Pro。",
     reset: isEn ? "Forgot password?" : "忘记密码？",
     resetSent: isEn
       ? "Reset link sent. Check your inbox."
@@ -231,9 +228,6 @@ export function LoginClient({ nextPath }: LoginClientProps) {
           </div>
           <h1 className="text-3xl font-bold tracking-tight text-white">PolyWeather</h1>
           <p className="mt-2 text-sm text-slate-400">{copy.subtitle}</p>
-          <div className="mt-4 inline-flex items-center rounded-full border border-cyan-400/30 bg-cyan-400/10 px-4 py-1.5 text-xs font-semibold text-cyan-200 shadow-[0_0_20px_rgba(34,211,238,0.08)]">
-            {copy.trialPromo}
-          </div>
         </div>
 
         <button