A node stores a word to offer on any of its ports and fetches the wait: it is blocked until a word comes for it or one of its offers is taken, and the fabric does the handing over in one step. The port block moves in the nucleus's map to make room for the new addresses. Nothing uses it yet. MESH.md 7c; plan step 6d task 1. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>