glass_intensity_slider
                        Liquid Glass intensity slider (iOS 27-style)
glass_preset_input      Light / dark / auto preset select input
glass_resolved_preset   Resolved light or dark appearance
glass_theme             Liquid Glass theme for 'shiny'
glass_theme_toggle      Light / dark / auto theme toggle buttons
observe_glass_intensity
                        Keep session intensity in sync with
                        'glass_intensity_slider()'
observe_glass_preset_input
                        Observe 'glass_preset_input()' on the server
observe_glass_theme_toggle
                        Observe 'glass_theme_toggle()' buttons on the
                        server
update_glass_theme      Update glass theme options in a running app
