Configurable or larger width of filename previews when using '@' file tagging in agent view

[juliarvalenti]

I work in a monorepo with a lot of deeply nested project directories. When I use the AI agent '@' context tagging, the directory structure easily overflows the box size and makes it impossible to tell files apart.

From a UX perspective, I could see this being improved in a few possible ways:

1. Allow this width to be adjustable via some config param
2. Allow this window to be scrollable side-to-side with shift-scroll
3. Show the full path of the currently hovered item in some sort of popout preview if it overflows
4. Allow the full path to be shown and don't place a max-width on the size of the window at all