feat: fullscreen hydration

src/hooks/useFullscreenAvailability.ts

@@ -0,0 +1,11 @@
+import { useLayoutEffect, useState } from 'react';
+
+export function useFullscreenAvailability() {
+  const [available, setAvailable] = useState(false);
+
+  useLayoutEffect(() => {
+    setAvailable(document.fullscreenEnabled);
+  }, []);
+
+  return available;
+}