Show HN: Cosh – An open-source AI agent orchestrator

Cosh is a general-purpose coding agent for the terminal with software engineering and computer tools that let it interact with graphical applications. It offers a multi-agent mode (/agents) for running external agents such as Gemini, Claude, Codex and Cline alongside the main agent in split panes, and reads graphical interfaces via an accessibility tree, falling back to screenshots only when needed. It is installed via a curl/bash or PowerShell script, is tested on Linux and Windows (macOS untested), and is released under Apache-2.0.