Refactor: use Bun in CI

.github/workflows/BUILD.yml

@@ -1,13 +1,13 @@
 on: workflow_call
-jobs:  
-  npm-build-push:    
+jobs:
+  npm-build-push:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
         with:
           token: ${{secrets.GITHUB_TOKEN}}
-      - uses: actions/setup-node@v6
+      - uses: oven-sh/setup-bun@v2
         with:
-          node-version: 24
-      - run: npm install && npm run build
+          bun-version: latest
+      - run: bun install && bun run build
       - run: git config user.name github-actions[bot] && git config user.email 41898282+github-actions[bot]@users.noreply.github.com && git add . && git commit -m "This build was committed by a bot." && git push