Fix admin login: redirect path, add logout, remove unused code

- Fix redirect from /admin/login to /admin-login
- Add DELETE endpoint for logout
- Connect logout button to API
- Remove unused admin state/localStorage

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/app/admin/layout.tsx

@@ -25,7 +25,6 @@ export default function AdminLayout({ children }: { children: React.ReactNode })
   const router = useRouter();
   const pathname = usePathname();
   const [sidebarOpen, setSidebarOpen] = useState(true);
-  const [admin, setAdmin] = useState<{ username: string; role: string } | null>(null);
 
   // Check if this is the login page - don't show sidebar
   const isLoginPage = pathname === "/admin-login";
@@ -36,19 +35,16 @@ export default function AdminLayout({ children }: { children: React.ReactNode })
 
     const token = document.cookie.match(/tia_admin_session=([^;]+)/)?.[1];
     if (!token) {
-      router.push("/admin/login");
+      router.push("/admin-login");
       return;
     }
-    const stored = localStorage.getItem("admin_user");
-    if (stored) {
-      setAdmin(JSON.parse(stored));
-    }
   }, [router, isLoginPage]);
 
-  const handleLogout = () => {
-    localStorage.removeItem("admin_token");
-    localStorage.removeItem("admin_user");
-    router.push("/admin/login");
+  const handleLogout = async () => {
+    try {
+      await fetch("/api/admin/auth", { method: "DELETE" });
+    } catch (e) {}
+    router.push("/admin-login");
   };
 
   // Login page - render without sidebar
@@ -98,12 +94,6 @@ export default function AdminLayout({ children }: { children: React.ReactNode })
 
         {/* Footer */}
         <div className="mt-auto p-4 border-t border-gray-700">
-          {sidebarOpen && admin && (
-            <div className="mb-3">
-              <div className="text-sm font-medium">{admin.username}</div>
-              <div className="text-xs text-gray-400">{admin.role}</div>
-            </div>
-          )}
           <button
             onClick={handleLogout}
             className="w-full px-3 py-2 bg-gray-700 text-gray-400 hover:text-white rounded-lg text-sm"

src/app/api/admin/auth/route.ts

@@ -118,6 +118,25 @@ export async function POST(request: Request) {
   }
 }
 
+// DELETE - Logout (clear session)
+export async function DELETE(request: Request) {
+  try {
+    const cookieStore = await cookies();
+    const sessionToken = cookieStore.get("tia_admin_session")?.value;
+
+    if (sessionToken) {
+      await sql`DELETE FROM admin_sessions WHERE session_token = ${sessionToken}`;
+    }
+
+    const response = NextResponse.json({ success: true });
+    response.cookies.set("tia_admin_session", "", { maxAge: 0, path: "/" });
+    return response;
+  } catch (error) {
+    console.error("Admin logout error:", error);
+    return NextResponse.json({ error: String(error) }, { status: 500 });
+  }
+}
+
 // GET - Check current session
 export async function GET(request: Request) {
   try {