async fn handle_shell_create(
__arg0: State<AppState>,
__arg1: Json<ShellCreateRequest>,
) -> impl IntoResponseExpand description
POST /api/v1/shell/create — start a persistent background shell.
Called by agentmux-mcp’s Shell tool. Returns immediately with a
shell_id; the ShellNodeRunner streams stdout/stderr to the frontend
as shell_chunk WPS events without blocking the agent.