refactor: set auth token to environment variable

Author: DaleSeo

.github/workflows/publication.yml

@@ -14,12 +14,6 @@ jobs:
         with:
           ref: ${{ github.event.release.tag_name }}
 
-      - name: Setup Bun
-        uses: oven-sh/setup-bun@v2
-
-      - name: Install dependencies
-        run: bun install --frozen-lockfile
-
       - name: Verify tag matches package.json
         run: |
           TAG_NAME="${{ github.event.release.tag_name }}"
@@ -34,16 +28,18 @@ jobs:
           fi
           echo "✅ 버전 일치 확인: ${TAG_VERSION}"
 
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+
       - name: Build package
         run: |
+          bun install --frozen-lockfile
           bun run prepare
           bun run build:lib
 
       - name: Publish to npm
         env:
-          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+          NPM_CONFIG_TOKEN: ${{ secrets.NPM_TOKEN }}
         run: |
-          echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" > .npmrc
-
           bun publish
           echo "npm 배포가 완료되었습니다."