Use npm to install Claude Code CLI instead of curl script

### 🔧 Improvements
- Changed Claude Code CLI installation to use npm package @anthropic-ai/claude-code
- Simpler and more reliable than curl-based installation script
- Leverages existing Node.js environment in GitHub Actions

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/version-and-publish.yml

@@ -100,8 +100,7 @@ jobs:
       - name: Install Claude Code CLI
         run: |
           echo "🤖 Installing Claude Code CLI..."
-          curl -fsSL https://claude.ai/cli/install.sh | sh
-          echo "$HOME/.local/bin" >> $GITHUB_PATH
+          npm install -g @anthropic-ai/claude-code
 
       - name: Generate changelog with Claude
         id: changelog