Fundamentals button refreshes page instead of opening detailed docs panel

[helloAmulya]

Description:
Clicking the "Fundamentals" button refreshes the page instead of opening the detailed docs panel (same behavior as the title link).

Expected:
Button should open the detailed panel without page reload.

Proposed fix:
Make button trigger panel open action; prevent default navigation.

Video:

Screen.Recording.2025-08-16.at.3.06.11.AM.mov