The brief pack referenced `teaching/audit_evidence.py` in 3 spots
(A2 schema field, A2 read-required list, B2 algorithm step 3a). The
actual module on main is `teaching/math_evidence.py` (carries
`MathReaderRefusalEvidence` per ADR-0167).
Sonnet (A2 / PR #380) discovered the discrepancy and correctly used
the real module. This patch corrects the brief so Wave B operators
(B1 / B2) do not hit the same gap on dispatch.
No runtime change. Pure docs.
3aea5a1fa8