Both were already Python, so these are moves rather than rewrites, and both
produce byte-identical output to their originals on the live tree with the same
exit codes.
The E402 debt evaporated on contact, which is the first concrete evidence for
T-1274's premise. check-systems-db-stamp reached generator_sources through a
sys.path.insert and a noqa suppression, because tooling/ was not a package. It
now imports as `from tooling import generator_sources` — no hack, no
suppression.
The stamp gate's six failure modes are preserved as a StampState enum rather
than collapsed into pass/fail, because they carry different remedies and one
carries a different exit code: UNSTAMPED exits 2 while every other failure
exits 1, and the pre-push hook has relied on that distinction since T-857.
One deliberate behavioural difference, flagged rather than hidden: the old
stamp script was silent on success unless given --verbose, and the new one
always prints its verdict. No fact is lost, so parity holds, and it makes the
gate consistent with client-version and dataflow-graph which both always print
— the old script was the odd one out. Its per-command --verbose gives way to
the global one, which is the consolidation this initiative is for.
Also corrects a claim in the ticket itself: check-dataflow-graph.py does not
parse git output, it globs the filesystem. Only check-canvas-version parses
git, so only that fixture needs a real repo.
Still open and recorded as such: check-canvas-version, and parity tests for
these two — both were verified side by side on the live tree, which proves the
happy path and nothing else.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 5
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