Remove email outbox collection and process job; refactor email templates with rich text support and slug generation

dev/test-plugin.mjs

@@ -0,0 +1,40 @@
+// Simple test to verify plugin can be imported and initialized
+import { mailingPlugin, sendEmail, scheduleEmail } from '@xtr-dev/payload-mailing'
+
+console.log('✅ Plugin imports successfully')
+console.log('✅ mailingPlugin:', typeof mailingPlugin)
+console.log('✅ sendEmail:', typeof sendEmail) 
+console.log('✅ scheduleEmail:', typeof scheduleEmail)
+
+// Test plugin configuration
+try {
+  const testConfig = {
+    collections: [],
+    db: null,
+    secret: 'test'
+  }
+  
+  const pluginFn = mailingPlugin({
+    defaultFrom: 'test@example.com',
+    transport: {
+      host: 'localhost',
+      port: 1025,
+      secure: false,
+      auth: { user: 'test', pass: 'test' }
+    }
+  })
+  
+  const configWithPlugin = pluginFn(testConfig)
+  console.log('✅ Plugin configuration works')
+  console.log('✅ Collections added:', configWithPlugin.collections?.length > testConfig.collections.length)
+  console.log('✅ Jobs configured:', !!configWithPlugin.jobs)
+  
+} catch (error) {
+  console.error('❌ Plugin configuration error:', error.message)
+}
+
+console.log('\n🎉 PayloadCMS Mailing Plugin is ready for development!')
+console.log('\nNext steps:')
+console.log('1. Run: npm run dev (in dev directory)')
+console.log('2. Open: http://localhost:3000/admin')
+console.log('3. Test: http://localhost:3000/mailing-test')