Code Autonomous

Harness-aware execution engine: decides planning depth, resolves doubts, dispatches multi-agent work, and closes the loop with a review gate — either as a standalone pipeline or as another skill's execution engine.

Isolation invariant (non-negotiable)

This skill never writes application code on the main product checkout, and never commits to main/master (or any base/SOURCE_BRANCH), unless the human has explicitly instructed "do not create a new branch / work in place on the current branch" for this run.

• Standalone and Engine mode both require an isolated WORK_BRANCH + WORKTREE_ROOT before any implementation edit.
• If worktree creation fails, or CWD/branch is still the main checkout / base branch → stop. Do not "continue on main to unlock the plan".
• Sandbox restrictions (Operation not permitted, Cursor agent runtime paths under .cursor/) are not permission to violate this invariant.

Harness discovery

See ../nextstage-harness/references/harness-discovery.md.

Routing (read first)