Deterministic, free, per-PR keystone for the token-reduction era. For every
interactive (tier>=2) skill, asserts the full AskUserQuestion decision-brief
format (ELI10/Recommendation/Pros-cons/checks/Net/(recommended)/Stakes/
self-check) lives in the always-loaded SKILL.md skeleton, NOT only in an
on-demand section. Plus a roster guard (a carve can't silently drop the block)
and per-skill rule survival in the skeleton+sections union. 51 cases + a
negative control. Fails the instant a future carve strands AUQ-governing text
where it won't be loaded when a question fires.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Garry Tan