Add inhibition-mode legend above per-mode table

Switch to dark theme — dark boxes with light text

Force light backgrounds + dark text together (fix dark-mode invisibility)

Force readable text colors with hardcoded values + dark-mode media query

Force text colors via Gradio theme variables (fix invisible white-on-white)

Drop ASCII pipeline + architecture image; keep concise input/validation text

UI overhaul: architecture diagram, dark-readable theme, formatted Ki cards

Initial SugarKi public UI