herdr

A terminal multiplexer that works like tmux (docs): a persistent server holds running sessions so a client can detach and reattach without losing state. Relevant here as the thing reached over Tailscale from a phone — the session persistence is what makes a mobile connection worth keeping.

Session model

• The herdr server is persistent. Disconnect and reattach later lands back in the same session — the tmux property that survives a dropped or backgrounded mobile link.
• Named sessions: herdr <name> opens a separate runtime namespace, giving one persistent session per project instead of one shared default.

Running it

• On the host: SSH in and run herdr there. It rides on whatever SSH session it finds itself in and needs no herdr-specific server config.
• As a thin client: herdr --remote <host> attaches from the local machine instead (agent guide, remote section).

Mobile access pattern

herdr does nothing special for mobile — the mobile story is the tmux story: SSH into the host, then run herdr. Tailscale supplies the stable private IP (100.x.y.z, or a MagicDNS name) so a phone SSH client reaches the Mac mini from any network with no port forwarding, and macOS Remote Login answers port 22. Full walkthrough: Reaching a herdr Session from Mobile over Tailscale.