Add Syntax Highlightnig for Apex Code

What version of the Codex App are you using (From “About Codex” dialog)?

Version 26.406.31014 (1395)

What subscription do you have?

Enterprise

What platform is your computer?

Darwin 25.4.0 arm64 arm

What issue are you seeing?

In Codex App in diff panel Salesforce Apex code lacks syntax highlighting.
Sorry if this should be a feature Request.

<img width="937" height="1059" alt="Image" src="https://github.com/user-attachments/assets/52c9c3bb-c5ae-4ecc-9a69-bcf7a67b5284" />

What steps can reproduce the bug?

1. Open Codex App
2. Open A Salesforce DX Project
3. Ask for changes to Some Apex Class Or Trigger

What is the expected behavior?

Code Should have syntax highlightning

Additional information

_No response_