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/users/routes.js

@@ -0,0 +1,14 @@
+import { Router } from 'express';
+import { requireAuth, requireRole, CAN_MANAGE_USERS } from '../../middleware/auth.js';
+import { getUsers, getRoles, postUser, putUser, patchUserActive } from './controller.js';
+
+const router = Router();
+
+router.use(requireAuth);
+router.get('/', getUsers);
+router.get('/roles', getRoles);
+router.post('/', requireRole(...CAN_MANAGE_USERS), postUser);
+router.put('/:id', requireRole(...CAN_MANAGE_USERS), putUser);
+router.patch('/:id/active', requireRole(...CAN_MANAGE_USERS), patchUserActive);
+
+export default router;