Independent verification found the first cut had swapped one bug for a
worse one. The budgets were split by "did we send a request", so a 429
attempt counted as productive — but 429 is exempt from the retry budget,
so its time burned neither budget. Against a queueing gateway that holds
the request for the full timeout before answering 429, a call could hang
for 301 attempts / 25.2 hours, measured, versus 301 seconds before the
change.
The split is now by which budget the time consumes: time that burns
max_attempts is excluded from stall, time that does not (429 attempts
included) belongs to stall. Measured again: back to one attempt / 301s.
Only the chat loop needs this — embedding and ocr count 429 against
max_attempts unconditionally, so the gap never existed there. The stall
verdict moved into _stalled(), which both call sites had duplicated, to
keep __call__ under the complexity gate.
iomgaa
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