First Commit. Duplicate bunext-sqlite preset

src/components/general/theme-init-script.tsx

@@ -0,0 +1,24 @@
+/**
+ * Applies the saved color scheme to `<html>` before first paint, so pages
+ * never flash light before twui's `ColorSchemeSelector` mounts. Mirrors the
+ * selector's resolution order: `localStorage.theme`, then the OS preference.
+ */
+const ThemeInitScriptSource = `(function () {
+    try {
+        var theme = localStorage.getItem("theme");
+        if (theme !== "dark" && theme !== "light") {
+            theme = window.matchMedia("(prefers-color-scheme: dark)").matches
+                ? "dark"
+                : "light";
+        }
+        var root = document.documentElement;
+        root.classList.remove("dark", "light");
+        root.classList.add(theme);
+    } catch (e) {}
+})();`;
+
+export default function ThemeInitScript() {
+    return (
+        <script dangerouslySetInnerHTML={{ __html: ThemeInitScriptSource }} />
+    );
+}