Function handler

ui/src/composables/useDarkMode.ts:56–60

()

    const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
    const handler = () => {
      if (theme.value === "auto") {
        applyTheme("auto");
      }
    };

    mediaQuery.addEventListener("change", handler);
    return () => mediaQuery.removeEventListener("change", handler);