{# No-flash theme setter. Runs synchronously high in , before bundle.css, so `data-theme` is on before first paint and the page never flashes the wrong theme (FOUC / flash of inaccurate theme). Behavior: - reads the persisted preference from localStorage ('theme'), defaulting to 'system'; - resolves 'system' against `prefers-color-scheme` and writes both `data-theme` (the concrete light/dark theme DaisyUI renders) and `data-theme-mode` (the chosen system/light/dark mode) on ; - exposes `window.cycleTheme()` cycling system -> light -> dark; - live-updates `data-theme` when the OS theme changes while in 'system'. Nonced so it survives a strict `script-src` CSP. Projects that want different theming logic can override just this partial. -#}