Adds --prefix as a forgiving alias to --rig flag. Accepts: - Exact prefix: bd-, gt- - Prefix without hyphen: bd, gt - Rig name: beads, gastown All resolve to the correct rig via routes.jsonl lookup. This matches agents' mental model of prefix-based routing. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>