Copy-on-write worktrees with memory that survives them. This glossary fixes the words the tool uses for the things it moves: worktrees, the refs they came from, and the record of what happened to them.
Lane: A copy-on-write worktree together with the branch checked out inside it. Avoid: workspace, branch — a branch is not a lane, and a lane outlives the branch it lands.
Base: The ref a lane branched from and rebases onto. Chosen once when the lane is created and recorded against it thereafter. Avoid: trunk, parent, target, upstream — upstream is the remote-tracking ref, a different thing.
Trunk: The repository's default branch. Only ever a fallback, used when a lane has no recorded base. Avoid: main, master, mainline — the default branch is frequently none of these.
Landing record: A marker in the lane's own git directory, written when a lane is prepared, holding the lane id and the branch tip. Never committed. It records that a landing was prepared, not that one arrived; the tip is what makes work added afterwards countable. Avoid: merge marker, landing commit — it is worktree state, not history.
Open: A lane whose work is not on the remote and not in its base.
Pushed: A lane whose branch is on the remote at exactly its local tip. Committing again returns it to open, because the remote no longer has everything.
Landed: A marked lane whose branch its remote retired, or whose work its base already contains. Collectable by prune once nothing has been added since the landing.