Add authenticated login and SSO protection

app/api/auth/callback/route.ts

@@ -0,0 +1,11 @@
+import { completeAuthorizationCallback, redirectToLoginWithError } from "@/lib/server/auth/oauth";
+
+export const runtime = "nodejs";
+
+export async function GET(request: Request) {
+  try {
+    return await completeAuthorizationCallback(request);
+  } catch {
+    return redirectToLoginWithError(request, "callback_failed");
+  }
+}