Allow editing orders in the order card

Cashiers can edit recipient, TTN, notes, goods and total in the order
modal and save via PATCH /orders/{id}. Edited orders get edited_at and
are no longer overwritten by CRM sync. Editing is blocked once a receipt
exists; changing the TTN resets Nova Poshta tracking fields.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

frontend/src/pages/DashboardPage.tsx

@@ -383,6 +383,7 @@ export function DashboardPage() {
       {viewingOrder && (
         <OrderDetailModal
           order={orders?.find((order) => order.id === viewingOrder.id) ?? viewingOrder}
+          canEdit={canFiscalize && tab === 'no_receipt'}
           onClose={() => setViewingOrder(null)}
         />
       )}