This sounds like a mashup of of several things I've been playing with lately...
- pi-web (https://pi-web.dev/): a web frontend for the Pi coding harness which can multiplex pi sessions across multiple machines
- herdr (https://herdr.dev/): a fairly polished agentic multiplexer TUI, can easily spawn or destroy windows based on subagent activity
- firstmate (https://github.com/kunchenguid/firstmate): a meta environment for coding harnesses - more naturally handles spawning and communicating with subagents, managing worktrees, and other SDLC functions, and has a fairly large number of constraints thru bash scripts to ensure better results with less intelligent models
Since you seem curious about these types of tools, might I interest you in ouijit https://ouijit.com/ https://github.com/ouijit/ouijit
Its intended as a terminal agent orchestrator aimed at power users who want a little more design than what I like to call 'hackerman' UXes.
While not terminal-only, I've been using Orca (https://github.com/stablyai/orca) for the past week and it's been a great experience
I've been working on collie[1] a plugin for herdr that runs a web app on the herdr host which can then be served via tailscale for example. This has made accessing my agents on the go a lot easier, paired with session persistence from herdr it's been quite nice to work with.
[1] https://github.com/AltanS/collie