cli v0.3.0

Added

• Agent scaffolds now include the canonical layout, Dockerfile, and disabled browser MCP configuration.

Fixed

• monkeybot chat no longer adopts a stale gateway on a busy port: it refuses to spawn when the port is already in use (suggesting /bye, stopping monkeybot run, or --attach), and wait_for_health rejects a /health 200 if the child process has already exited.