I can now replay any AI agent stream from...

I can now replay any AI agent stream from production. Here's how. In my last post, I wrote about the four SSE bugs that break AI agent UIs at 2am — chunk boundary splits, missing token batching, hanging done states, and retry logic that retries the wrong things. There's a fifth problem I didn't cover, because the fix didn't exist yet. What do you do the morning after something broke? The stream is gone. The event sequence that caused the bug evaporated the moment the connection closed. You have