The parity gate has been exercised: nine-pass investigation, fixes, two prod reparses, and an after-report at 504/511 candidate coverage with agreement unchanged. What remains of workstream A is the activation itself (step c, the post-approval fundamental_data refresh — not yet implemented) and A6 decommissioning, both now specified in a handoff section with the caveats the next implementer must carry (KLAC splits, BRK-B, FITB, the 25% guard, CIK overrides, reparse-after-parser-changes). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>