debug: log full API response to diagnose empty subscription results

chat/server.js

@@ -12220,7 +12220,8 @@ async function handleAccountSettingsUpdate(req, res) {
             id: s.subscription_id || s.id,
             status: s.status,
             productId: s.product_id
-          }))
+          })),
+          fullResponse: JSON.stringify(allSubscriptions).substring(0, 1000)
         });
         
         if (allSubscriptions?.items && allSubscriptions.items.length > 0) {