Review fixes on the failure span. Check the HTTP class before the body so a
gateway's HTML page counts as api_4xx / api_5xx with its code. Treat a 2xx
whose body is not a JSON object carrying uuid and status as invalid_response
and exit cleanly, instead of emitting a success span and crashing in the
display step. Recognise archive failures by a dedicated ArchiveError
(a ValueError) raised from create_project_zip, so the git helpers' own
ValueErrors no longer read as zip_error; a failed ZIP write is wrapped and
its partial file removed.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>