- ZshTool now includes full DAG functionality (serial, parallel, graph)
- Single "zsh" command for all shell operations
- Usage: zsh("ls") or zsh(["cmd1", "cmd2"]) or zsh([...], parallel=True)
- DagTool kept in codebase for backwards compatibility
- Removed DagTool from default TOOLS list
- Bump hanzo-tools-shell to v0.3.1