[Feature]: Support for file viewer on right side like Opencode.

[basilk15]

Before submitting

• I searched existing issues and did not find a duplicate.
• I am describing a concrete problem or use case, not just a vague idea.

Area

apps/desktop

Problem or use case

Hey, wondering if there could be the feature to view the files in this T3 code desktop app, the same way opencode allows to view the file tree on the right side?
I volunteer myself to do that if Theo wants though xD. But this is a legit feature which should be there.

Proposed solution

just make a right side clickable button with icon of file manager, user clicks it and the file tree is displayed for that project.

Why this matters

Provides the view of file tree and files in the app itself instead of user opening it again and again in the file manager separately to see what changes did the agent made, and other path issues too etc.

Smallest useful scope

the feature itself

Alternatives considered

yeah i have to open the file manager again and again just in order to be sure oh ok agent made this change and added the file in the correct path

Risks or tradeoffs

none i believe its easy

Examples or references

opencode does that

Contribution

• I would be open to helping implement this.