Open a work session the way the vault contract requires — read vault/Home.md, the newest session note and the mission being served, check the session registry for live lines, declare this session, and state the single next move before touching code. Use at the start of every interactive Claude Code session in this repo (not in a lane worker, whose report is its trail), or when the user says "start", "pick up where we left off", or "/session-open".
