feat(api): add GET /cfdi/:id/xml endpoint

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

apps/api/src/controllers/cfdi.controller.ts

@@ -45,6 +45,26 @@ export async function getCfdiById(req: Request, res: Response, next: NextFunctio
   }
 }
 
+export async function getXml(req: Request, res: Response, next: NextFunction) {
+  try {
+    if (!req.tenantSchema) {
+      return next(new AppError(400, 'Schema no configurado'));
+    }
+
+    const xml = await cfdiService.getXmlById(req.tenantSchema, String(req.params.id));
+
+    if (!xml) {
+      return next(new AppError(404, 'XML no encontrado para este CFDI'));
+    }
+
+    res.set('Content-Type', 'application/xml');
+    res.set('Content-Disposition', `attachment; filename="cfdi-${req.params.id}.xml"`);
+    res.send(xml);
+  } catch (error) {
+    next(error);
+  }
+}
+
 export async function getResumen(req: Request, res: Response, next: NextFunction) {
   try {
     if (!req.tenantSchema) {

apps/api/src/routes/cfdi.routes.ts

@@ -11,6 +11,7 @@ router.use(tenantMiddleware);
 router.get('/', cfdiController.getCfdis);
 router.get('/resumen', cfdiController.getResumen);
 router.get('/:id', cfdiController.getCfdiById);
+router.get('/:id/xml', cfdiController.getXml);
 router.post('/', cfdiController.createCfdi);
 router.post('/bulk', cfdiController.createManyCfdis);
 router.delete('/:id', cfdiController.deleteCfdi);