debug: add error catching to compare getSession

src/app/api/compare/route.ts

@@ -24,7 +24,13 @@ function slugify(text: string): string {
 // const ratelimit = new Ratelimit({ redis, limiter: slidingWindow(5, "1m") })
 
 export async function POST(request: Request) {
-  const session = await auth.api.getSession({ headers: request.headers });
+  let session;
+  try {
+    session = await auth.api.getSession({ headers: request.headers });
+  } catch (e) {
+    console.error("[compare] getSession error:", e);
+    return Response.json({ error: "Session lookup failed", detail: String(e) }, { status: 500 });
+  }
   if (!session?.user) {
     return Response.json({ error: "Authentication required" }, { status: 401 });
   }