feat(intro): polish loading transition

src/components/ui/intro/FadeToVideoOverlay.tsx

@@ -0,0 +1,14 @@
+export function FadeToVideoOverlay(): React.JSX.Element {
+  return (
+    <div
+      aria-hidden="true"
+      style={{
+        position: "fixed",
+        inset: 0,
+        zIndex: 29,
+        background: "#000",
+        pointerEvents: "none",
+      }}
+    />
+  );
+}

src/components/ui/intro/index.ts

@@ -1,3 +1,4 @@
+export { FadeToVideoOverlay } from "./FadeToVideoOverlay";
 export { IntroVideoPlayer } from "./IntroVideoPlayer";
 export { IntroDialogueOverlay } from "./IntroDialogueOverlay";
 export { IntroRevealOverlay } from "./IntroRevealOverlay";