feat(auth): add frontend login and route protection

frontend/athena/middleware.ts

@@ -0,0 +1,18 @@
+import { NextRequest, NextResponse } from "next/server";
+
+export function middleware(request: NextRequest) {
+  const token = request.cookies.get("access_token");
+
+  if (!token) {
+    return NextResponse.redirect(new URL("/login", request.url));
+  }
+
+  return NextResponse.next();
+}
+
+export const config = {
+  matcher: [
+    "/dashboard/:path*",
+    "/users/:path*",
+  ],
+};