fix: evitar llamadas de red en tests desde ContactsService

Co-authored-by: aider (openrouter/openai/gpt-5) <aider@aider.chat>

src/services/contacts.ts

@@ -122,6 +122,9 @@ export class ContactsService {
   }
 
   private static async maybeFetchFromApi(digitsId: string): Promise<string | null> {
+    // Evitar llamadas de red en entorno de test
+    if (process.env.NODE_ENV === 'test') return null;
+
     const baseUrl = process.env.EVOLUTION_API_URL;
     const instance = process.env.EVOLUTION_API_INSTANCE;
     const apikey = process.env.EVOLUTION_API_KEY;