Universal transport library for 5 CLI AI agents (Claude Code, Codex, Gemini, Cursor, OpenCode). Pipe and PTY transports. TransportSession is a thin router over PipeSession.
//! OpenCode PTY stubs.
//!//! OpenCode is pipe-only — it has no PTY OutputParser or PromptSubmitter.
//! The PTY factory falls back to the Claude parser/submitter for OpenCode.
//! This module exists as a placeholder for future PTY support.