feat: add global user administration for admin users

Backend:
- Add getAllUsuarios() to get users from all tenants
- Add updateUsuarioGlobal() to edit users and change their tenant
- Add deleteUsuarioGlobal() for global user deletion
- Add global admin check based on tenant RFC
- Add new API routes: /usuarios/global/*

Frontend:
- Add UserListItem.tenantId and tenantName fields
- Add /admin/usuarios page with full user management
- Support filtering by tenant and search
- Inline editing for name, role, and tenant assignment
- Group users by company for better organization
- Add "Admin Usuarios" menu item for admin navigation

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api/src/routes/usuarios.routes.ts

@@ -6,9 +6,15 @@ const router = Router();
 
 router.use(authenticate);
 
+// Rutas por tenant
 router.get('/', usuariosController.getUsuarios);
 router.post('/invite', usuariosController.inviteUsuario);
 router.patch('/:id', usuariosController.updateUsuario);
 router.delete('/:id', usuariosController.deleteUsuario);
 
+// Rutas globales (solo admin global)
+router.get('/global/all', usuariosController.getAllUsuarios);
+router.patch('/global/:id', usuariosController.updateUsuarioGlobal);
+router.delete('/global/:id', usuariosController.deleteUsuarioGlobal);
+
 export { router as usuariosRoutes };