MESH.md 7b: no message is lost without its sender being told, and no node waits for ever. What v3 does, from the code, and what could not be established. A refusal travels back as a NACK; Hera ends a wait on a stuck node by killing it and tells the others it is gone; a line from the console breaks a wait. Step 6c has the acceptance. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>