Add toad support

[dwt]

Is your feature request related to a problem? Please describe.

https://github.com/batrachianai/toad is a new open source coding agent (acp harness)

Describe the solution you'd like

package it so it is easy to try out

Describe alternatives you've considered

installing myself, sure, but I would like to have it in this repo.

[Mic92]

Have you tested it? Is this some sort of agent multi-plexer?

[dwt]

yes, my understanding is that it uses ACP to drive other agents, and provide a nicer TUI on top. It's still early days, but the stuff that already works is really nice. For example, the terminal emulation (i.e. running interactive terminal l apps inside it) is much nicer than other agents I have tested.