chore(phase0): deepfield 파티클 잔재 3파일 + three/@types/three 의존성 제거

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

package.json

@@ -28,15 +28,13 @@
     "remark-gfm": "^4.0.0",
     "resend": "^6.9.1",
     "solarlunar": "^2.0.7",
-    "tailwind-merge": "^3.5.0",
-    "three": "^0.184.0"
+    "tailwind-merge": "^3.5.0"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4",
     "@types/node": "^20",
     "@types/react": "^19",
     "@types/react-dom": "^19",
-    "@types/three": "^0.184.1",
     "eslint": "^9",
     "eslint-config-next": "16.1.6",
     "tailwindcss": "^4",