buildlisted

# compass:build Execute the locked `plan.md` step by step. Loop = **Build → Test → Verify**; verify is adversarial (try to prove the step WRONG). ## Step 0 — own this build, then gate **FIRST, unconditionally (fresh OR resumed/direct entry), before the gate:** `compass.sh own <slug> --session "$CLAUDE_CODE_SESSION_ID"`. This binds the build's owner to THIS session so the Stop hook guards *your* session — and only yours — from the very first edit (a resumed build entered in a new terminal must be owned before any work, never guarded only after the first step). v0.9.0: the Stop hook blocks the owning session of a mid-build and stays quiet for every other session, build, and project — so parallel builds never contaminate each other. Then run `compass.sh gate "$(compass.sh state-root)/<slug>" review-plan`. **Non-zero → STOP** (plan not LOCKED), offer `compass:review-plan`. Also: if the INDEX line is a terminal status, STOP and ask which build this is. **Never improvise a build from the contract or prompt.** `plan.md` checkboxes are the AUTHORITATIVE progress record. **Parallel-build gate (when `compass.sh active-builds` shows >1):** - `compass.sh assert-worktree <slug>` — **non-zero → STOP**; you are in the wrong directory. `cd` to this build's worktree; all build work happens there (a commit from the main checkout would contaminate a sibling). - `compass.sh claim <slug> <plan touches globs> --from <new-files-list>` then `compass.sh check-overlap <slug>` — re-run as scope gro