R6-B1 (Claude, executed end-to-end): provenness was decided by a
WHOLE-OUTPUT 'no axioms' sentence, so an axiom-free certificate whose
line was entirely absent still scored proven+clean ([]==[]). The
reviewer drove a doctored 60-line output through the real gate and got
61/61 with domsep never audited. Classification is now extracted into
classify_certificates(): proven iff the certificate's OWN anchor was
parsed (axiom-free anchors populate []); absent certs are
unknown/failed + not_checked — never clean. This also fail-closes the
typo'd-future-cert case (R6-C2).
GPT §6: parse_axiom_output is now RECORD-scoped — anchors delimit
records, a cone bracket is accepted only inside its own record, missing
or truncated brackets yield MISSING (fail closed) instead of borrowing
the next certificate's bracket, and cones may wrap arbitrarily (the
old fixed 16-line window was a latent overflow for the 11-axiom
ed25519 apex cones on this estate). Anchor names are captured between
the exact quotes Lean prints.
Six new regression tests (absent-axiom-free-not-clean, missing-bracket
no-steal, truncated cone, >16-line wrap, duplicate anchor, interleaved
diagnostics). Suite: 114 passed / 0 failed.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Found by the entry-13 rehearsal (the accumulator corpus is the first
subject with axiom-free certificates — every fork certificate carries
at least the boundary axiom, so this path was never exercised):
- an axiom-free certificate ('X' does not depend on any axioms) was
parsed by opening a 16-line window and taking the first bracket in
it — which belongs to the NEXT certificate. domsep/Hash/
instDecidableEqHash/take_append_drop were reported with their
neighbors' cones and flagged dirty.
- certificate names were matched as bare substrings, so 'Foo' could
anchor on the line for 'Foo_bar'. Now anchored on the exact quoted
name Lean prints.
The no-axioms decision is now made on the anchor line itself, before
any window. Two regression tests added (steal-next-cone, exact-name);
suite 108 passed / 0 failed.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
