Show HN: Halyard – Mac and iPhone app for AI agents in tmux, nothing to install

Halyard is a Mac, iPhone and iPad app that opens tmux sessions on your own servers over SSH, so AI coding agents like Claude Code, Codex and Gemini keep running when you close the lid or lose connectivity. The Mac app renders with libghostty on the GPU, supports full tmux history search, SFTP file browsing and Keychain-stored keys, and connects directly with no relay or account. It requires a reachable SSH server with tmux, macOS 15 or later, and iOS/iPadOS 17 or later, with a 14-day trial and Halyard Pro at $24.99.