`transport="stream_json"` puts them on `claude -p` with piped stdin
instead of a pseudo-tty. The pi is the machine the PTY path hurt most:
seconds per spawn waiting for an Ink render loop to settle — which is
why `startup_delay` had crept to 60s — and the occasional prompt lost to
a swallowed paste. Neither failure mode has an analogue on a pipe.
`include_partial_messages` comes with it, so Anthropic-API clients get
token-level SSE rather than one delta per finished block.
Drops `--remote-control`: it only means anything for an interactive
session, and the transport would strip it anyway.