React debug rescue
A compact sample for turning a vague broken-app report into a first fix plan: reproduce, isolate state/API/render behavior, patch one path, and verify before expanding scope.
Highpriority
6hfirst pass
Mediumrepo risk
Likely root cause
Coupon response and optimistic cart state are racing. The UI trusts stale derived totals before the server-confirmed cart snapshot lands.
First fix path
Paid diagnostic slice
One broken path, safe preflight, concise fix or root-cause report.
$200