fix：splash 界面重定向界面问题

src/app/splash/components/splash-button.tsx

@@ -15,8 +15,8 @@
  *
  * 跳转时序：
  *   1. 派发事件（如 `AuthGuestLoginSubmitted`）
- *   2. auth machine 进 loading state → API 调用 → onDone → state.isSuccess = true
- *   3. useEffect 监听到 isSuccess → 调 chat/user store 初始化 + router.replace("/chat")
+ *   2. auth machine 进 loading state → API 调用 → onDone → loginStatus 更新
+ *   3. useEffect 监听到 isSuccess (= loginStatus !== "notLoggedIn") → 调 chat/user store 初始化 + router.replace("/chat")
  */
 import { useRouter } from "next/navigation";
 import { useEffect, useRef } from "react";
@@ -47,17 +47,10 @@ export function SplashButton() {
 
   // 邮箱/OAuth/游客登录成功跳 /chat + 通知 chat/user 初始化
   useEffect(() => {
-    // DEBUG：isSuccess 状态透明化
-    console.log("[splash-button] useEffect state.isSuccess", {
-      isSuccess: state.isSuccess,
-      wasSuccess: wasSuccess.current,
-      willRedirect: state.isSuccess && !wasSuccess.current,
-    });
     if (state.isSuccess && !wasSuccess.current) {
       wasSuccess.current = true;
       chatDispatch({ type: "ChatAuthStatusChanged" });
       userDispatch({ type: "UserInit" });
-      console.log("[splash-button] useEffect → router.replace(/chat) [via isSuccess]");
       router.replace(ROUTES.chat);
     }
   }, [state.isSuccess, chatDispatch, userDispatch, router]);

src/app/splash/components/splash-screen.tsx

@@ -22,9 +22,6 @@ export function SplashScreen() {
   //   - 都没有 → 留在 splash（**不**自动创建游客账号 —— 见 auth-machine.ts 的 checkAuthStatusActor）
   //
   // proxy 读不到 localStorage（Edge runtime），所以这条 fallback 必须在 Client 侧。
-  //
-  // DEBUG：client 端**不**用 Logger（pino 引入会爆 client bundle），改用 console.log
-  //   临时调试，bug 修完即删。
   useEffect(() => {
     let cancelled = false;
     void (async () => {
@@ -40,15 +37,7 @@ export function SplashScreen() {
         (loginTok != null && loginTok.length > 0) ||
         (guestTok != null && guestTok.length > 0);
 
-      console.log("[splash] useEffect token check", {
-        loginToken: loginTok ? `${loginTok.slice(0, 8)}...` : null,
-        guestToken: guestTok ? `${guestTok.slice(0, 8)}...` : null,
-        hasAny,
-        willRedirect: hasAny && !cancelled,
-      });
-
       if (!cancelled && hasAny) {
-        console.log("[splash] useEffect → router.replace(/chat)");
         router.replace(ROUTES.chat);
       }
     })();