mrwulf f47663b890 S5.3 drill (2nd pass): anchor refactor-equivalence provenance to git history ...

The previous drill's equivalence theorems were only as strong as their
RHS matching the ACTUAL historical base (not a from-memory
reconstruction) and 'nothing else changed' being true. Both now verified
against the repository itself: git show cfde9b2 confirms the RHS forms
verbatim; git diff cfde9b2..8795e82 confirms the refactor is base-only
(eight lines). Provenance recorded in Refactor.lean's header so the
argument is self-contained: unchanged remainder (git) + equal base
(kernel) => whole-function equality. 26 certs green. LTL untouched.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-11 19:55:38 +02:00

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