refactor(router): introduce app navigation manager

src/stores/sync/chat-auth-sync.tsx

@@ -8,22 +8,14 @@
  * 不再承担全局状态同步职责。
  */
 import { useEffect, useRef } from "react";
-import { usePathname, useRouter } from "next/navigation";
 
 import { AuthStorage } from "@/data/storage/auth";
 import { useAuthState } from "@/stores/auth/auth-context";
 import { useChatDispatch } from "@/stores/chat/chat-context";
-import { PROTECTED_ROUTES, ROUTES, type StaticRoute } from "@/router/routes";
-
-function isProtectedPath(pathname: string): boolean {
-  return PROTECTED_ROUTES.some((route: StaticRoute) => pathname === route);
-}
 
 export function ChatAuthSync() {
   const authState = useAuthState();
   const chatDispatch = useChatDispatch();
-  const pathname = usePathname();
-  const router = useRouter();
   const prevSessionKeyRef = useRef<string | null>(null);
 
   useEffect(() => {
@@ -35,9 +27,6 @@ export function ChatAuthSync() {
 
     if (authState.loginStatus === "notLoggedIn") {
       chatDispatch({ type: "ChatLogout" });
-      if (isProtectedPath(pathname)) {
-        router.replace(ROUTES.splash);
-      }
       return;
     }
 
@@ -65,8 +54,6 @@ export function ChatAuthSync() {
     authState.isLoading,
     authState.loginStatus,
     chatDispatch,
-    pathname,
-    router,
   ]);
 
   return null;