Free plan - production deploys blocked by stale "credit usage exceeded" flag

CLI deploys fail with “JSONHTTPError: Forbidden”.

netlify status shows the correct user and the folder is linked.
Running with --debug shows the 403 raised in callMethod at
deploy.js:1017, so it fails on an API call before any file upload
begins. Deploy size is not the cause: the publish directory is now
~50 MB and it fails identically at that size.

Draft deploy (netlify deploy, without --prod): [SUCCEEDED / FAILED
with the same 403 - delete whichever does not apply]

Team: espace
Site: espace-cabinet-generator
Site ID: 3a428475-3af7-4012-b98e-337e4c77ca9e

Billing shows credits available. Please check and reset the
credit-usage flag on this account.