fix: unblock production Docker build (chat query + middleware types)

Co-authored-by: Cursor <cursoragent@cursor.com>

src/app/api/chat/route.ts

@@ -121,7 +121,7 @@ export async function POST(req: NextRequest) {
     normQuery.includes('presupuesto')
   ) {
     try {
-      const matchNumber = query.match(/(\d+[\d\.,]*)/);
+      const matchNumber = userMessage.match(/(\d+[\d\.,]*)/);
       let amount = 1000;
       if (matchNumber) {
         amount = parseFloat(matchNumber[1].replace(/\./g, '').replace(',', '.'));