The reception protocol is ten steps and this cycle builds two. The rest, once the seam exists: orient via the librarian catalogue, which the hub tells us to query BEFORE assuming a capability is missing or building our own; private memory via memory search and add; report back via nightshift claim and complete; contribute; and hand off. The handoff carries a scar worth keeping - a plain contribution lands in a shared idea box the recipient never sees in their own inbox, so it must carry to_agent or it is lost, and this broke a real credential handoff. Never inline a secret in the text.