update flow

src/App.tsx

@@ -2,6 +2,7 @@ import { Suspense } from "react";
 import { Canvas } from "@react-three/fiber";
 import { Crosshair } from "@/components/ui/Crosshair";
 import { InteractPrompt } from "@/components/ui/InteractPrompt";
+import { IntroUI, BienvenueDisplay } from "@/components/ui/IntroUI";
 import { DebugPerf } from "@/utils/debug/DebugPerf";
 import { World } from "@/world/World";
 
@@ -16,6 +17,8 @@ function App(): React.JSX.Element {
       </Canvas>
       <Crosshair />
       <InteractPrompt />
+      <IntroUI />
+      <BienvenueDisplay />
     </>
   );
 }