fix: configurar DB global en pruebas para evitar DbNotConfiguredError

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

tests/unit/server.onboarding-activar.test.ts

@@ -3,6 +3,7 @@ import { Database } from 'bun:sqlite';
 import { initializeDatabase } from '../../src/db';
 import { WebhookServer } from '../../src/server';
 import { ResponseQueue } from '../../src/services/response-queue';
+import { setDb } from '../../src/db/locator';
 
 describe('WebhookServer - DM "activar" (A4)', () => {
   let memdb: Database;
@@ -11,7 +12,7 @@ describe('WebhookServer - DM "activar" (A4)', () => {
     memdb = new Database(':memory:');
     initializeDatabase(memdb);
     (WebhookServer as any).dbInstance = memdb;
-    (ResponseQueue as any).dbInstance = memdb;
+    setDb(memdb);
   });
 
   beforeEach(() => {