The witness template previously instructed using raw git commands: - git worktree remove polecats/<name> - git branch -d polecat/<name> This failed because git worktree operations must run from the repo that created the worktree (mayor/rig or .repo.git), not the rig root. Now uses `gt polecat nuke` which handles repo base detection via the repoBase() function and properly cleans up worktrees. Fixes gt-gp6i 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>