chore: 移除已废弃的 InteractiveModel 及相关资源依赖 (#24)

## Summary by Sourcery

移除已弃用的 InteractiveModel 组件及其相关的 3D 后期处理依赖。

改进：
- 从 `package.json` 中清理未使用的 3D 渲染和后期处理依赖。

维护：
- 删除已弃用的 InteractiveModel 组件以及在 lockfile 中对应的条目。

<details>
<summary>Original summary in English</summary>

## Summary by Sourcery

Remove the deprecated InteractiveModel component and its associated 3D
post-processing dependencies.

Enhancements:
- Clean up unused 3D rendering and post-processing dependencies from
package.json.

Chores:
- Delete the deprecated InteractiveModel component and corresponding
entries from the lockfile.

</details>

Author: Aliothmoon

app/components/InteractiveModel.tsx

@@ -15,15 +15,13 @@
   "dependencies": {
     "@react-three/drei": "^10.7.7",
     "@react-three/fiber": "^9.4.0",
-    "@react-three/postprocessing": "^3.0.4",
     "baseline-browser-mapping": "^2.9.19",
     "clsx": "^2.1.1",
     "framer-motion": "^12.23.24",
     "i18next": "^25.7.1",
     "lucide-react": "^0.555.0",
-    "next": "16.0.7",
+    "next": "16.1.5",
     "next-themes": "^0.4.6",
-    "postprocessing": "^6.38.2",
     "react": "19.2.0",
     "react-dom": "19.2.0",
     "react-i18next": "^16.4.0",