DrylTheme

A complete DRYL theme. A theme only carries <em>seed</em> values — the brand accent, an optional separate AI accent, and optional semantic and chart-palette overrides. Everything else (soft fills, accent lines, glows, the AI aura) is <em>derived</em> from these seeds in <c>dryl.css</c> via <c>color-mix()</c>, so a theme can never drift out of visual coherence.