New brand caduceus (vector mark, cyan #08EBF1->#3889FD) on a radial-depth navy
badge. Favicon family regenerated (svg/ico/png/apple-touch). Titlebar and
empty-state logos now use the self-contained navy badge so they render correctly
on every theme (light + dark) without washing out. Removed 5 per-skin CSS rules
that force-filled the titlebar icon to a flat accent color (they assumed the old
monochrome caduceus).
nesquena-hermes
