Defame1297 1d40544075 fix(gates): hold skill versions above main's tip as well as the merge-base ...

Why: two branches that both bump a skill 1.0.0 -> 1.0.1 with different
content merge without a conflict, and each passed the gate against its own
merge-base, so main could ship two changes under one version.

Implementation Notes:
- check-skill-version-bump requires the pushed version to exceed both the
  merge-base and the main tip; failures name the baseline they missed.
- Presence is read from the tree, so a blob missing from a partial clone is
  a read failure instead of a silently exempt "new" skill.
- A leading UTF-8 BOM no longer reads as a missing version.
- Version parts reject leading zeros in all three validators
  (check-skill-version-bump, skill-size-check, factory-audit).
- New tests cover equal bumps, moved files, major/minor ordering, bad refs,
  unreadable blobs, mode-only changes, symlinks and tag peeling.

Impact: ADR-0022 amended (reverses "not main's current tip"); gates.md
updated to match, including pre-commit 4.6.1's exact ref selection.

ADR: 0022
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

2026-09-16 11:24:08 +00:00

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