feat(OrdersPanel): implement sorting for order history entries

- Added a new function to sort order history entries in descending order based on their timestamps.
- Integrated the sorting function into the OrdersPanel component to enhance the display of order history.

frontend/src/components/OrdersPanel.vue

@@ -159,6 +159,14 @@ const normalizeAmount = (value) => {
     return Math.max(0, Number(parsed.toFixed(2)));
 };
 
+const sortHistoryNewestFirst = (entries = []) => {
+    return [...entries].sort((a, b) => {
+        const aTime = new Date(a?.changedAt || a?.updatedAt || a?.createdAt || 0).getTime();
+        const bTime = new Date(b?.changedAt || b?.updatedAt || b?.createdAt || 0).getTime();
+        return bTime - aTime;
+    });
+};
+
 export default {
     name: 'OrdersPanel',
     props: {
@@ -257,6 +265,7 @@ export default {
                 cost: normalizeAmount(order.cost),
                 paidAmount: normalizeAmount(order.paidAmount),
                 openAmount: normalizeAmount(order.openAmount),
+                historyEntries: sortHistoryNewestFirst(order.historyEntries || []),
                 draftItem: order.item || '',
                 draftStatus: order.status || 'requested',
                 draftCost: String(normalizeAmount(order.cost)),