fix: hacer beforeEach asíncrono en tests de servidor para permitir await import

Co-authored-by: aider (openrouter/x-ai/grok-code-fast-1) <aider@aider.chat>

tests/unit/server.test.ts

@@ -524,7 +524,7 @@ describe('WebhookServer', () => {
     let mockEnsureUserExists: any;
     let consoleSpy: any;
 
-    beforeEach(() => {
+    beforeEach(async () => {
       mockEnsureUserExists = mock(() => '1234567890');
       // Mock the function in the module
       const dbModule = await import('../../src/db');