[FEATURE]: Easier Access to Code Snippets Output

[silentjay]

Feature hasn't been suggested before.

• [x] I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

I use OpenCode in Neovim, mostly in plan mode as a pure AI assistant, avoiding build mode when possible. Because of this, I often have to manually copy code snippets when needed from the message output using the terminal shortcuts ctrl-\ and ctrl-n, which feels clunky.

It would be extremely useful to have a way to jump directly into the result buffer within OpenCode itself, allowing users to access and copy code snippets — either in their entirety or through visual selection.

A good example of this behavior done well can be seen in Elia https://github.com/darrenburns/elia