When polecat branches have .beads/ tracked from previous bd sync operations, those files would contaminate the new worktree. Now setupSharedBeads(): 1. Removes any existing .beads/ contents before creating redirect 2. Points redirect directly to mayor/rig/.beads (matches crew workers) Also adds sling-design.md documenting the gt sling command design. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>