Distillation

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<observations> Date: Aug 7, 2026 * 🟡 (15:58) GitHub state check on PR #865: mergeable=MERGEABLE, mergeStateStatus=BLOCKED, state=OPEN, reviewDecision=CHANGES_REQUESTED. BYK's latest review is now COMMENTED (previously CHANGES_REQUESTED; that review was on an outdated commit). * 🟡 (15:58) Diagnosis of the BLOCKED gate: `reviewDecision` still reads CHANGES_REQUESTED even though BYK's latest review is COMMENTED — GitHub caches the reviewDecision from the prior CHANGES_REQUESTED review and only refreshes it when the reviewer submits a new review or dismisses the old one. BYK is now back in requested_reviewers, so the merge gate clears only if BYK approves or posts a fresh review. * 🟡 (15:58) Assistant planned next steps: check whether the reviewer re-request auto-clears the merge gate (some setups do), wait then re-check the state, and investigate whether the stale review can be dismissed.