fix: add NPM authentication verification to publish workflow

- Added npm whoami verification step to check token validity
- Added verbose flag to npm publish for better debugging
- Added informational messages for troubleshooting

This helps diagnose authentication issues with both classic and fine-grained NPM tokens

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

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

Author: PaulDuvall

.github/workflows/npm-publish-simple.yml

@@ -49,11 +49,17 @@ jobs:
         run: |
           echo "//registry.npmjs.org/:_authToken=${{ inputs.npm_token }}" >> ~/.npmrc
           echo "::add-mask::${{ inputs.npm_token }}"
+          
+      - name: Verify NPM Authentication
+        run: |
+          echo "Verifying NPM authentication..."
+          npm whoami || echo "⚠️ Not authenticated - token may be invalid"
       
       - name: Publish
         run: |
           cd claude-dev-toolkit
-          npm publish --access public
+          echo "Publishing @paulduvall/claude-dev-toolkit..."
+          npm publish --access public --verbose
       
       - name: Verify SSM parameter (Optional)
         continue-on-error: true