Add global UI scale setting and zoom shortcuts (#3862) - #3864

Bugbot Analysis Progress (24m 20s elapsed)

✅ Gathered PR context (6s)
✅ Completed bug detection (24m 14s)
✅ Posted analysis results (1s)

Final Result: Bugbot completed review - no issues found! ✅

Request ID: serverGenReqId_10e1c31c-ebf6-4f22-b219-03030841ee15