fix(console): fix stuck authentication check and add reliable redirect to /console/login

- Add immediate redirection to /console/login when unauthenticated in AdminLayout
- Add timeout (4000ms) with AbortController in adminApi.ts to prevent infinite pending fetch
- Provide explicit sign-in link in layout fallback view

refer_landing_page/app/console/layout.tsx

@@ -13,14 +13,17 @@ export default function AdminLayout({ children }: { children: React.ReactNode })
 
   useEffect(() => {
     let isMounted = true;
+
     async function checkAuth() {
+      if (pathname === "/console/login") {
+        if (isMounted) setIsAuthenticated(false);
+        return;
+      }
+
       const token = getClientToken();
       if (!token) {
-        if (pathname !== "/console/login") {
-          router.push("/console/login");
-        } else {
-          setIsAuthenticated(false);
-        }
+        if (isMounted) setIsAuthenticated(false);
+        router.replace("/console/login");
         return;
       }
 
@@ -29,11 +32,8 @@ export default function AdminLayout({ children }: { children: React.ReactNode })
 
       if (!isValid) {
         removeClientToken();
-        if (pathname !== "/console/login") {
-          router.push("/console/login");
-        } else {
-          setIsAuthenticated(false);
-        }
+        setIsAuthenticated(false);
+        router.replace("/console/login");
       } else {
         setIsAuthenticated(true);
       }
@@ -51,8 +51,28 @@ export default function AdminLayout({ children }: { children: React.ReactNode })
 
   if (isAuthenticated === null) {
     return (
-      <div className="min-h-screen bg-ivory text-ink flex items-center justify-center">
+      <div className="min-h-screen bg-ivory text-ink flex flex-col items-center justify-center space-y-4">
         <div className="text-sm text-ink/70">Checking authentication...</div>
+        <Link
+          href="/console/login"
+          className="text-xs text-cobalt underline hover:text-cobalt/80 font-mono"
+        >
+          Click here to sign in
+        </Link>
+      </div>
+    );
+  }
+
+  if (isAuthenticated === false) {
+    return (
+      <div className="min-h-screen bg-ivory text-ink flex flex-col items-center justify-center space-y-4">
+        <div className="text-sm text-ink/70">Redirecting to login...</div>
+        <Link
+          href="/console/login"
+          className="px-4 py-2 bg-cobalt text-white rounded text-sm font-medium hover:bg-cobalt/90"
+        >
+          Go to Sign In Page
+        </Link>
       </div>
     );
   }

refer_landing_page/lib/adminApi.ts

@@ -153,23 +153,32 @@ async function request<T>(
 
   const baseUrl = getAdminApiBaseUrl();
   const url = `${baseUrl}${endpoint}`;
-  const response = await fetch(url, {
-    ...options,
-    headers,
-    cache: "no-store",
-  });
+  
+  const controller = new AbortController();
+  const timeoutId = setTimeout(() => controller.abort(), 4000);
 
-  if (response.status === 204) {
-    return {} as T;
+  try {
+    const response = await fetch(url, {
+      ...options,
+      headers,
+      signal: controller.signal,
+      cache: "no-store",
+    });
+
+    if (response.status === 204) {
+      return {} as T;
+    }
+
+    const json = await response.json().catch(() => ({}));
+    if (!response.ok) {
+      const errorMsg = json?.error?.message || `Request failed with status ${response.status}`;
+      throw new Error(errorMsg);
+    }
+
+    return json.data;
+  } finally {
+    clearTimeout(timeoutId);
   }
-
-  const json = await response.json().catch(() => ({}));
-  if (!response.ok) {
-    const errorMsg = json?.error?.message || `Request failed with status ${response.status}`;
-    throw new Error(errorMsg);
-  }
-
-  return json.data;
 }
 
 // 0. Auth Verification