Update deploy.yml to include permissions

Added permissions for GitHub Actions to allow pushing to branches.

.github/workflows/deploy.yml

@@ -2,22 +2,21 @@ name: Deploy site to GitHub Pages
 on:
   push:
     branches:
-      - main  # or your default branch
+      - main
+
+permissions:
+  contents: write    # ✅ allow pushing to branches
 
 jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-
       - uses: actions/setup-node@v3
         with:
           node-version: '22'
-
       - run: npm install
-
       - run: npm run build
-
       - name: Deploy to GitHub Pages
         uses: peaceiris/actions-gh-pages@v3
         with: