A rate-limited model now says so, instead of dumping HTTP headers into your thread

Sometimes a round dies because the model deployment refuses it: it is out of quota, or the provider itself is faulting. Until now the thread showed you the provider's raw failure — the status line, the JSON body, and the complete block of HTTP response headers, in English, whatever your language. It was the least readable thing on the page, and it was the only account you had of what went wrong.

A refused round now ends with a sentence: the model is out of quota (or the provider returned an error), in your language, naming the model that actually ran. The raw transport detail hasn't been thrown away — it moves to the log, where an operator can still see every byte of it, together with the status and both model names.

There is a second half to this, and it is the one that used to be genuinely confusing. If the model you picked has no usable credentials, your round is quietly moved onto one that has — so the failure you were shown named a model you never selected, with nothing anywhere saying why. When a substituted round fails, it now says so in one sentence: which model you chose, and which one was used instead.

Errors that aren't the provider's are untouched. If a round fails because of a bug or a tool, its own message still comes through word for word — that message is the diagnosis, and replacing it with something tidier would only hide it.