Fix portal account creation and improve email handling

- Add explicit POST method to portal account creation API call
- Improve error handling with specific messages for different failure cases
- Remove SMTP verification step that was causing issues with some servers
- Make email sending non-critical to portal account creation success
- Add better response data handling for keycloak_id
- Add integration review documentation

server/api/admin/test-email.post.ts

@@ -51,18 +51,11 @@ export default defineEventHandler(async (event) => {
     const { getEmailService } = await import('~/server/utils/email');
     const emailService = await getEmailService();
     
-    // Try to verify connection but don't fail if verification doesn't work
-    // Some SMTP servers have issues with verify() but work fine for sending
-    try {
-      const connectionOk = await emailService.verifyConnection();
-      if (connectionOk) {
-        console.log('[api/admin/test-email.post] SMTP connection verified successfully');
-      }
-    } catch (verifyError: any) {
-      console.warn('[api/admin/test-email.post] SMTP verification failed, attempting to send anyway:', verifyError.message);
-    }
-
-    // Attempt to send test email regardless of verification result
+    // Skip verification entirely and just try to send
+    // Many SMTP servers don't support the VERIFY command
+    console.log('[api/admin/test-email.post] Attempting to send test email without verification...');
+    
+    // Attempt to send test email directly
     await emailService.sendTestEmail(body.testEmail);
 
     console.log('[api/admin/test-email.post] ✅ Test email sent successfully');