portable-pty (agent spawning)

Spawn pseudoterminals across Windows, macOS, and Linux to bridge local processes with remote agent shells.

Portable-pty (agent spawning) solves the headache of inconsistent terminal behavior across OS kernels. By leveraging node-pty or similar low-level bindings, you can spawn interactive shells (bash, zsh, powershell.exe) that behave like real physical terminals rather than simple pipes. This is critical for remote agents: it ensures proper handling of escape sequences, window resizing (SIGWINCH), and interactive prompts. Whether you are building a web-based IDE or a headless automation bot, this tech provides the TTY layer needed to run tools like vim or top without the output turning into a garbled mess.

https://github.com/microsoft/node-pty