Discharges the post-merge obligation from CLAUDE.md's board-hygiene rule: a merged PR owes a PR_ARC_INVENTORY entry and a LATEST_STATE record. PR_ARC_INVENTORY (prepend) — the full Added / Locked / Deferred / Docs / Confidence entry for #971 (merge commit 2cbe62d, head d627f5c), covering all four stages: the maturity gate + four kernel carves, the corrected Stage-2.5 census, Stage-2.6a V3 invariance, and the CE64 <-> V3 losslessness gate. The entry is long because six of its items are corrections the arc made to its own record, and each is worth more than the result it corrected: the audit example was pinning the defect it tested; the consumer filter tested a predicate that could not matter (which inverted the published headline from 0/5760 to 1098/5760); the report hardcoded its own conclusion as a literal; a coarse label certified a component it never looked at; the Stage-2.6 brief's premise was false and was re-scoped; and InferenceType was rewriting half the mantissa state space on every conversion. Confidence is graded per claim rather than for the PR -- notably MEDIUM on moves_confidence()'s 34 hand-written declarations, because the matrix they are pinned against is a sample. LATEST_STATE (prepend) — the merged-PR record: a four-row stage index over the five dated sections already in the file, plus the one finding a future session should not have to rediscover (InferenceType is lossy on 8 of 16 states, carry the raw nibble; the tail fields cross as raw ordinals and preservation is not a provenance upgrade), plus the four items left open as Stage-3 inputs. Diff is 172 insertions and 0 deletions -- the structural append-only audit for these files. This PR's entire content is board hygiene for a prior PR. Per CLAUDE.md's termination clause it therefore generates NONE of the merged-PR row's obligations: no arc entry and no LATEST_STATE update are owed for it. It is discharged by the entries it wrote. Do not open a follow-up.

Commits

Commits on Aug 20, 2026

Board hygiene for merged #971