fix: install compatible OpenTUI dependencies

[linellazatin]

Fixes#602.

Install the OpenTUI 0.4.x runtime dependencies required by the TUI entrypoint, matching OpenCode 1. This prevents npm from selecting incompatible OpenTUI 0.5.x releases.

Verified with type checking, 87 tests, package validation, a clean tarball install, and direct TUI module loading.

[baroque-cat]

It looks like the project has effectively been abandoned. I wonder if anyone will create a separate fork and maintain it instead?

[jakoss]

It looks like the project has effectively been abandoned. I wonder if anyone will create a separate fork and maintain it instead?

The aforementioned ACP seems like pretty much it - it's not fork per se, but it looks like direct continuation of the concept. So far works great for me

[Tarquinen]

Apologies friends I've had a very busy couple weeks, working this and a bunch of other issues tonight!