feat(gallery): transition to and from the nds

app/stores/app.ts

@@ -1,4 +1,5 @@
 import { z } from "zod/mini";
+import type * as THREE from "three";
 
 const STORAGE_ID = "app_settings";
 
@@ -29,6 +30,7 @@ export const useAppStore = defineStore("app", {
       booted: false,
       settings,
       screen: "home" as AppScreen,
+      camera: null as THREE.Camera | null,
     };
   },
 
@@ -41,6 +43,10 @@ export const useAppStore = defineStore("app", {
       this.screen = screen;
     },
 
+    setCamera(camera: THREE.Camera) {
+      this.camera = camera;
+    },
+
     save() {
       localStorage.setItem(STORAGE_ID, JSON.stringify(this.settings));
     },