feat(nds): add help button with hints for all physical buttons

app/stores/gallery.ts

@@ -35,6 +35,7 @@ export const useGalleryStore = defineStore("gallery", {
       this.isOutro = false;
 
       const app = useAppStore();
+      app.disallowHints();
 
       // Intro: Fade starts first (at 0), camera starts after with overlap
       const cameraDelay =
@@ -157,6 +158,7 @@ export const useGalleryStore = defineStore("gallery", {
       setTimeout(() => {
         this.isOutro = false;
         app.navigateTo("home");
+        app.allowHints();
       }, ANIMATION.NAVIGATE_DELAY);
     },
   },