MESH.md 7d.3 amended while the plan was written: first and next in place of find by type; sleep is woken by a message coming, not by one being there; operation 10, room. 7d.4: room for a text's answer is kept on the wire back. 7d.9: a ping across hops, thought about and not ruled. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>