fix: esperar a server.stop() y resetear DB en tests

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

tests/unit/server.test.ts

@@ -25,6 +25,7 @@ beforeAll(() => {
 
 afterAll(() => {
 	(ResponseQueue as any).add = originalAdd;
+	resetDb();
 	// Close the test database
 	testDb.close();
 });
@@ -323,7 +324,7 @@ describe('WebhookServer', () => {
 			const server = await WebhookServer.start();
 			const response = await fetch('http://localhost:3007/health');
 			expect(response.status).toBe(200);
-			server.stop();
+			await server.stop();
 		} finally {
 			process.env.PORT = originalPort;
 			process.env.EVOLUTION_API_URL = prevEnv.EVOLUTION_API_URL;