feat: improve publish workflow with tests and caching

Changes:
- Changed trigger from 'created' to 'published' (more standard)
- Added test run before publishing to ensure quality
- Added npm cache for faster dependency installation
- Tests must pass before package is published to npm

To use this workflow:
1. Go to GitHub Settings > Secrets and variables > Actions
2. Add a new secret named NPM_TOKEN
3. Get your npm automation token from https://www.npmjs.com/settings/tokens
4. Create releases on GitHub and they will auto-publish to npm

Author: saifulapm

.github/workflows/publish.yml

@@ -2,7 +2,7 @@ name: Publish to npm
 
 on:
   release:
-    types: [created]
+    types: [published]
 
 jobs:
   publish:
@@ -16,10 +16,14 @@ jobs:
       with:
         node-version: '20.x'
         registry-url: 'https://registry.npmjs.org'
+        cache: 'npm'
 
     - name: Install dependencies
       run: npm ci
 
+    - name: Run tests
+      run: npm run test:run
+
     - name: Build
       run: npm run build