's'

app/api/vip/check-by-user/route.ts

@@ -13,6 +13,7 @@ import {
 type PayjsVipResult = {
   vip: boolean;
   email?: string;
+  linkedUserId?: string;
 };
 
 const inflightUserChecks = new Map<string, Promise<PayjsVipResult | null>>();
@@ -108,6 +109,10 @@ async function checkVipFromPayjsapi(
         typeof data?.email === "string" && data.email.trim()
           ? data.email.trim().toLowerCase()
           : undefined,
+      linkedUserId:
+        typeof data?.linked_user_id === "string" && data.linked_user_id.trim()
+          ? data.linked_user_id.trim()
+          : undefined,
     };
     console.log(
       "[check-by-user] payjsapi response user_id=%s vip=%s email=%s",
@@ -214,6 +219,7 @@ export async function POST(request: NextRequest) {
         if (payjsResult?.vip) {
           vip = true;
           email = payjsResult.email ?? null;
+          linkedUserId = payjsResult.linkedUserId;
           vipSource = "payjsapi";
         }
       }