fix(chat): place browser hint between header actions

src/app/chat/chat-screen.tsx

@@ -11,7 +11,6 @@ import { ROUTES } from "@/router/routes";
 import { MobileShell } from "@/app/_components/core";
 
 import {
-  BrowserHintOverlay,
   ChatArea,
   ChatHeader,
   ChatInputBar,
@@ -216,6 +215,7 @@ export function ChatScreen() {
           {/* isGuest 派生自 auth.loginStatus */}
           <ChatHeader
             isGuest={isGuest}
+            showBrowserHint={shouldShowBrowserHint}
             offerBanner={
               <FirstRechargeOfferBanner
                 visible={firstRechargeOfferBanner.visible}
@@ -252,9 +252,6 @@ export function ChatScreen() {
           )}
         </div>
 
-        {/* 浏览器提示（应用内浏览器检测） */}
-        {shouldShowBrowserHint ? <BrowserHintOverlay forceShow /> : null}
-
         {/* PWA 安装提示触发器（聊天消息数量达到阈值后才允许弹出） */}
         <PwaInstallOverlay enabled={shouldShowPwaInstall} />