Closes #4381
Before:
<img width="394" height="176" alt="before"
src="https://github.com/user-attachments/assets/7b34b448-9fbc-4a69-abaf-8b621d22ef1e"
/>

After:
<img width="394" height="176" alt="after"
src="https://github.com/user-attachments/assets/388f997c-ca02-4fb4-b8db-4d6f7e9cd302"
/>

Release Notes:

- Added highlighting for Go directives