conventions_ci_gate built a git repository and ran check_conventions.py
as a subprocess for each of its 35 checks, and took 40.57 s in the
Windows relinker CI job 122160160306. CONTRIBUTING.md requires every
test to finish in 30 s and to be shrunk when it gets close. The test now
commits each case as its own workflow file in one repository, runs one
real Check.workflows() in process and asserts each file's findings. Two
subprocess runs keep the end-to-end path: the repository's workflows
and one job without a gate.
roboterspinne
34de2385aa