fix: resolve white screen by removing stack-unfriendly spread operators and adding diagnostic logs

components/mkt/MasterTable.tsx

@@ -42,7 +42,7 @@ export const MasterTable: React.FC<MasterTableProps> = ({ products, includeCOGS,
   const totalAcos = totals.grossSales > 0 ? totals.ppcSpend / totals.grossSales : 0;
 
   const sortedProducts = useMemo(() => {
-    return [...products].sort((a, b) => {
+    return products.slice().sort((a, b) => {
       const metricsA = calculateProductMetrics(a, includeCOGS);
       const metricsB = calculateProductMetrics(b, includeCOGS);