From b61a38911cf3e0660855a827995c652231f4008f Mon Sep 17 00:00:00 2001
From: mrwulf <mrwulf.cleaner@gmail.com>
Date: Thu, 16 Jul 2026 19:20:00 +0200
Subject: [PATCH] Runbook: drift-tolerant producer pin (Fable drill on the Opus
 Phase-B batch)
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The drill caught: committing the paper outline advanced the pacta
working tree 8b1a325→84e0eb8, so the release tuple's exact-SHA
PACTA_COMMIT=8b1a325 was already stale and B1b's 'HEAD==PACTA_COMMIT'
would have falsely aborted. Verified 8b1a325..84e0eb8 touches ONLY
paper/ (zero producer code). Fixed the invariant to pin the producer
CODE (PACTA_CODE_BASE=8b1a325, git diff -- src provider must be empty),
tolerating doc-only commits above it — the correct thing to pin is the
reviewed producer code, not an ephemeral HEAD.

Drill also re-confirmed by execution (not from Opus-session logs):
operational append base pristine (12 entries, root bcd15f9d, max index
11, mtimes Jul 7 — uncontaminated by any rehearsal); B1 clean-room exit
0 + ATTESTATION GREEN with fidelity; live log 12/bcd15f9d; producer
suite 115/115.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 ATTESTATION-RUNBOOK.md | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/ATTESTATION-RUNBOOK.md b/ATTESTATION-RUNBOOK.md
index c01c5e4..54ccaa2 100644
--- a/ATTESTATION-RUNBOOK.md
+++ b/ATTESTATION-RUNBOOK.md
@@ -28,13 +28,15 @@ them; any mismatch aborts. Filled from the round-6 rehearsal
 
 ```
 SUBJECT_COMMIT   = 172a1d0653f489d5b7cb73ac7942a57cbb496532   # corpus (round-5 freeze, reviewed r6)
-PACTA_COMMIT     = <the pacta commit containing ALL of: the round-6 parser
-                    hardening + fail-closed classifier (87ef2a1), the leaf
-                    `scope` block (d937a94), and examples/repos.yaml's
-                    ltl-accumulator-verified entry (0f5906c). The GREEN 12→13
-                    rehearsal ran at d937a9438218eea537ed47fef8c206375bd9e400;
-                    use the current pacta HEAD that contains it —
-                    re-confirm clean + suite-green on the day (B1b)>
+PACTA_CODE_BASE  = 8b1a325caaef6d3993d63d4c730eab03065e936b   # round-6-hardened
+                    producer: parser hardening + fail-closed classifier +
+                    leaf `scope` block + examples/repos.yaml entry + dead-code
+                    cleanup. The 12→13 rehearsal ran green on this producer.
+PACTA_COMMIT     = <the pacta working-tree HEAD at B2 time — MUST have
+                    `git diff PACTA_CODE_BASE HEAD -- src provider` EMPTY
+                    (producer code identical to the reviewed base; doc-only
+                    commits above it, e.g. paper/, are fine). Record the exact
+                    HEAD in the B6 evidence.>
 EXPECTED_OLD_SIZE= 12
 EXPECTED_OLD_ROOT= bcd15f9d7ea1c9e5bd0a9e64fa8d846208b1e29ee167d4f1eac19b30e6913ee9
 KEY_FINGERPRINT  = 874c8a008a607021528b2493fa1caf059f9d5c123d29193dfabc09a6d1e7a56a