fix(api): add UUID type cast in getCfdiById and getXmlById

PostgreSQL requires explicit type cast when comparing UUID columns
with text parameters in raw queries.

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

apps/api/src/services/cfdi.service.ts

@@ -89,7 +89,7 @@ export async function getCfdiById(schema: string, id: string): Promise<Cfdi | nu
       xml_original as "xmlOriginal",
       created_at as "createdAt"
     FROM "${schema}".cfdis
-    WHERE id = $1
+    WHERE id = $1::uuid
   `, id);
 
   return result[0] || null;
@@ -97,7 +97,7 @@ export async function getCfdiById(schema: string, id: string): Promise<Cfdi | nu
 
 export async function getXmlById(schema: string, id: string): Promise<string | null> {
   const result = await prisma.$queryRawUnsafe<[{ xml_original: string | null }]>(`
-    SELECT xml_original FROM "${schema}".cfdis WHERE id = $1
+    SELECT xml_original FROM "${schema}".cfdis WHERE id = $1::uuid
   `, id);
 
   return result[0]?.xml_original || null;