fix: aislar pruebas restaurando dbInstance y add de ResponseQueue

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

tests/unit/server.test.ts

@@ -7,6 +7,7 @@ import { initializeDatabase, ensureUserExists } from '../../src/db';
 
 // Simulated ResponseQueue for testing (in-memory array)
 let simulatedQueue: any[] = [];
+let originalAdd: any;
 
 class SimulatedResponseQueue {
   static async add(responses: any[]) {
@@ -30,9 +31,12 @@ beforeAll(() => {
   testDb = new Database(':memory:');
   // Initialize schema
   initializeDatabase(testDb);
+  // Guardar implementación original de ResponseQueue.add para restaurar después
+  originalAdd = (ResponseQueue as any).add;
 });
 
 afterAll(() => {
+  (ResponseQueue as any).add = originalAdd;
   // Close the test database
   testDb.close();
 });
@@ -82,6 +86,7 @@ describe('WebhookServer', () => {
 
   afterEach(() => {
     process.env = envBackup;
+    (ResponseQueue as any).add = originalAdd;
   });
 
   const createTestRequest = (payload: any) => 

tests/unit/services/response-queue.test.ts

@@ -5,18 +5,21 @@ import { ResponseQueue } from '../../../src/services/response-queue';
 
 let testDb: Database;
 let envBackup: NodeJS.ProcessEnv;
+let originalDbInstance: Database;
 
 describe('ResponseQueue (persistent add)', () => {
   beforeAll(() => {
     envBackup = { ...process.env };
     testDb = new Database(':memory:');
     initializeDatabase(testDb);
-    // Inyectar DB de pruebas
+    // Guardar e inyectar DB de pruebas
+    originalDbInstance = (ResponseQueue as any).dbInstance;
     (ResponseQueue as any).dbInstance = testDb;
   });
 
   afterAll(() => {
     process.env = envBackup;
+    (ResponseQueue as any).dbInstance = originalDbInstance;
     testDb.close();
   });