Settings > Appearance > UI Scale (appearance.uiScale, 75-200 %, default 100)
scales the whole interface on top of the display's own scaling, live as it is
chosen; Cancel puts it back, OK saves it and a saved scale applies from the
first frame. The Settings dialog's choice rows show a number setting with
choices as its text. Automation id: settings.appearance.uiScale.
egui's own Ctrl+= / Ctrl+- / Ctrl+0 zoom is off now: Ctrl+0 (Window > Project)
also reset the zoom behind the app's back, and the scale is a setting.
Test: engine tests_settings ui_scale_is_a_percentage_from_75_to_200; ui_panels
ui_scale_setting_sizes_the_interface.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>