RunKit is a browser based tmux manager that works great on a phone over Tailscale. I created it to be able to run several AI agents in parallel, after trying out several existing tools. There's no database (state is read live from tmux).
Right now, its the first thing I install on any server, and from there on RunKit becomes the management cock-pit for that server.
Also, for running several agents in parallel, RunKit has been a lifesaver. It shows the status of all running agent on the left panel, and sends you a notification anytime an agent is stuck.
Please try it out, and let me know if works for you.