docs: Fix v6.1.0 release notes accuracy

CHANGELOG.md

@@ -6,25 +6,15 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [6.1.0] - 2025-11-19
 
-## New Features
+## Viewer UI: Responsive Layout Improvements
 
-### Responsive Mobile Navigation
+The viewer UI now handles narrow screens better with responsive breakpoints:
 
-Implemented a Discord-style mobile navigation system that reorganizes controls at smaller breakpoints:
+- Community button relocates to sidebar below 600px width
+- Projects dropdown relocates to sidebar below 480px width
+- Sidebar constrained to 400px max width
 
-- **Community button** relocates to sidebar at 600px breakpoint
+Makes the viewer usable on phones and narrow browser windows.
-- **Projects dropdown** relocates to sidebar at 480px breakpoint
-- **Sidebar width constraints** added (100% width, 400px max-width)
-- **Full-height layout** fixes for proper flex behavior
-
-This creates an intuitive mobile experience where the sidebar becomes the primary navigation container, similar to Discord's mobile UI pattern.
-
-## Technical Details
-
-- Clean separation between header and sidebar navigation responsibilities
-- Responsive breakpoints at 600px and 480px
-- Proper width constraints prevent excessive sidebar width on larger screens
-- Consistent layout behavior across all screen sizes
 
 ## [6.0.9] - 2025-11-17