docs(changelog): add build number toggle feature entry

Documents the new ability for users to view build numbers in the About window by clicking the version number text to toggle between version and build information.

This improves transparency and makes it easier for users and support teams to identify specific builds during troubleshooting.

Author: dannystewart

CHANGELOG.md

@@ -8,6 +8,10 @@ The format is based on [Keep a Changelog], and this project adheres to [Semantic
 
 ## [3.1.1] (2026-01-04)
 
+### Changed
+
+- Adds build number to the About window, accessible by clicking the version number text to alternate between version and build.
+
 ### Fixed
 
 - Adds another fix for HUD window interaction with Mission Control and Show Desktop by removing `.stationary` window behavior.