fix: add disposal on unmount in SkyModel and SimpleModel

src/components/three/world/SkyModel.tsx

@@ -1,8 +1,9 @@
 import { useFrame, useThree } from "@react-three/fiber";
 import { useGLTF } from "@react-three/drei";
-import { Component, useMemo, useRef, type ReactNode } from "react";
+import { Component, useEffect, useMemo, useRef, type ReactNode } from "react";
 import * as THREE from "three";
 import { useLoggedGLTF } from "@/hooks/three/useLoggedGLTF";
+import { disposeObject3D } from "@/utils/three/dispose";
 
 interface SkyModelProps {
   modelPath: string;
@@ -80,6 +81,12 @@ function SkyModelContent({
   });
   const model = useMemo(() => createSkyModel(scene), [scene]);
 
+  useEffect(() => {
+    return () => {
+      disposeObject3D(model);
+    };
+  }, [model]);
+
   useFrame(() => {
     groupRef.current?.position.copy(camera.position);
   });
@@ -122,5 +129,5 @@ function createSkyMaterial<T extends THREE.Material>(material: T): T {
   return skyMaterial as T;
 }
 
-useGLTF.preload("/models/skybox/skybox.gltf");
+useGLTF.preload("/models/skybox/model.gltf");
 useGLTF.preload(LEGACY_SKY_MODEL_PATH);