Bulk update category order and improve number formatting

Category order is now updated via a bulk API endpoint instead of individual requests, improving efficiency. Number formatting in pricing tiers form now avoids cursor jumping by only formatting decimals when necessary.

components/forms/pricing-tiers.tsx

@@ -21,7 +21,9 @@ export const PricingTiers = ({
   handleAddTier,
 }: PricingTiersProps) => {
   const formatNumber = (num: number) => {
-    return Number(num.toFixed(2)).toString();
+    // Only format to 2 decimal places if the number has decimal places
+    // This prevents cursor jumping when user types whole numbers
+    return num % 1 === 0 ? num.toString() : num.toFixed(2);
   };
 
   const formatTotal = (num: number) => {