What problem does it solve? Parallel agent or developer work in one repository causes branch collisions, shared runtime state, and leaked artifacts. This Skill enforces workspace hygiene: one worktree per job, one isolated runtime stack per worktree, and per-run artifact tags that never outlive the run. ## Core Features & Use Cases - Workspace creation (/open): Creates a job's isolated workspace — a git worktree on its own branch per the committed naming profile, ephemeral local config carried over, and a namespaced runtime provisioned. - Safety-gated teardown (/close): Refuses to close on uncommitted work or an unmerged branch, then stops the runtime, removes the worktree, and deletes the branch. - Per-run artifact tagging: Ships a POSIX sh run-tag script that prints a fresh run-<12 hex> tag per invocation, so verification runs build every artifact under one ephemeral tag. - Use Case: An agent starting a feature job runs /open to get an isolated worktree and runtime, verifies changes under a fresh run tag, then runs /close which blocks teardown until work is committed and merged. ## Quick Start Ask the assistant to open a new isolated workspace for the current job using the /open command.