Minimal MCP (Model Context Protocol) server over stdio.
Reads line-delimited JSON-RPC 2.0 from stdin and writes responses to stdout. Exposes tools for par-term ACP integrations:
config_update: writes configuration changes to a file for the main app to pick upterminal_screenshot: requests a live terminal screenshot from the app via a file-based IPC handshake (with an optional fallback image path for non-GUI test harnesses)