Add SMTP credentials for tests and enhance user role handling in CMS and Galerie endpoints

tests/auth-endpoints.spec.ts

@@ -63,6 +63,9 @@ import statusHandler from '../server/api/auth/status.get.js'
 
 describe('Auth API Endpoints', () => {
   beforeEach(() => {
+    // Setze SMTP-Credentials für Tests
+    process.env.SMTP_USER = 'test@example.com'
+    process.env.SMTP_PASS = 'test-password'
     vi.clearAllMocks()
   })