Adds a new subcommand `gt hook show <agent>` that displays what work
is on any agent's hook in a compact one-line format:
gastown/polecats/nux: gt-abc123 'Fix the widget bug' [hooked]
Use cases:
- Mayor checking what polecats are working on
- Witness checking polecat status
- Debugging coordination issues
- Quick status overview
Also supports --json flag for machine-readable output.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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