Three doc-only housekeeping items from Dav1d's de-novo reconciliation
of the architecture stack (no code changes; the active build is
#000061 cold-pack work, which is unaffected by this review):
1. Accepted-error formula. Dav1d corrected p_raw × (1-d)(1-r) to
p_raw × (1 - dr) where r is conditional on detection. Searched
docs/ and arborist/ — the wrong form does NOT appear in this
tree (it lives in the external recursive-truth-maintenance / RCO
manuscripts Dav1d cited). Nothing to fix here; recorded for the
manuscript authors.
2. #000060 H-ABCDEFG split. Folded the M/C/X axis split into the
harness scope: M (mechanism — does the substrate's plumbing work),
C (capability — does it improve task performance), X (external
adversarial — does it generalize outside author-designed fixtures).
ACCEPT requires clearing all three. Without X, the harness risks
self-validating benchmark theology — passing tests its own designers
picked. Tagged at fixture-definition time; aggregator emits per-axis
pass rates + combined ACCEPT verdict. Doesn't change the existing
BatteryResult row schema.
3. #000062 Mechanistic Witness — new scaffold-only ticket. Specifies
a content-addressed MechanisticWitnessRoot over (model_config,
capture_policy, contrastive_prompts, features/neurons, intervention
result, behavioral delta, safety policy) as a DIAGNOSTIC sidecar
feeding SelfModel + benchmark fixtures. Four hard guardrails:
diagnostic-only by default; sandbox intervention only; no production
steering without governance ACCEPT via #000060 M+C+X; feature labels
never become semantic proof. No code until a real falsifier use case
exists + guardrails are CLAUDE.md rules + #000060 harness gates
promotion. The dual-use risk (Pan et al. 2025: 0.1% MLP ablation
breaks refusal in 72B models) makes governance-first framing
load-bearing.
Next ID bumped to 000063.
No code change to arborist/. The in-flight v3 SPV corpus pack
(bmq47x6t3) continues unaffected.
russell@unturf.com
eba08beb61