chore: estructura inicial del MVP

Backend (Express + MariaDB) y frontend (React + Vite, identidad Fluent/Windows) con el
nucleo funcional: seguridad, organizacion, proyectos, actividades, subtareas, dependencias,
dashboard, calendario, gantt, comentarios, adjuntos, notificaciones in-app y catalogos.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

backend/src/modules/comments/routes.js

@@ -0,0 +1,11 @@
+import { Router } from 'express';
+import { requireAuth } from '../../middleware/auth.js';
+import { getComments, postComment } from './controller.js';
+
+const router = Router();
+
+router.use(requireAuth);
+router.get('/', getComments);
+router.post('/', postComment);
+
+export default router;