dsh-crew: Run Claude Code and Codex terminal panes side-by-side in dsh Web UI

`dsh-crew` is an MIT-licensed DSH plugin released by `dshworks`, designed to integrate Claude Code and Codex as real-time terminal panes into the DSH Web UI to enable human-machine split-screen collaboration. It allows users to intuitively monitor AI execution processes within a real PTY environment and supports inputting, interrupting, or broadcasting messages at any time. The plugin provides DSH agents with tools such as `crew_list`, `crew_seat`, `crew_send`, `crew_peek`, and `crew_dismiss`, enabling agents to manage member seating assignments, send tasks, read current screen content, and terminate processes. The `crew_send` function waits for the screen to stabilize before returning only new content, supporting...