feat: orders lookup with receipt reprint, refresh stock after sale

- "Orders" button in POS quick actions shows recent transactions
- Search by transaction number, tap to view receipt, print or save PDF
- Product stock counts refresh after completing a sale
- Invalidate product search queries on payment completion

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

packages/admin/src/components/pos/pos-item-panel.tsx

@@ -7,8 +7,9 @@ import { Button } from '@/components/ui/button'
 import { Dialog, DialogContent, DialogHeader, DialogTitle } from '@/components/ui/dialog'
 import { Label } from '@/components/ui/label'
 import { Skeleton } from '@/components/ui/skeleton'
-import { Search, ScanBarcode, Wrench, PenLine } from 'lucide-react'
+import { Search, ScanBarcode, Wrench, PenLine, ClipboardList } from 'lucide-react'
 import { toast } from 'sonner'
+import { POSTransactionsDialog } from './pos-transactions-dialog'
 
 interface POSItemPanelProps {
   transaction: Transaction | null
@@ -19,6 +20,7 @@ export function POSItemPanel({ transaction: _transaction }: POSItemPanelProps) {
   const { currentTransactionId, setTransaction, locationId, accountId } = usePOSStore()
   const [search, setSearch] = useState('')
   const [customOpen, setCustomOpen] = useState(false)
+  const [txnDialogOpen, setTxnDialogOpen] = useState(false)
   const [customDesc, setCustomDesc] = useState('')
   const [customPrice, setCustomPrice] = useState('')
   const [customQty, setCustomQty] = useState('1')
@@ -211,6 +213,14 @@ export function POSItemPanel({ transaction: _transaction }: POSItemPanelProps) {
           <PenLine className="h-4 w-4" />
           Custom
         </Button>
+        <Button
+          variant="outline"
+          className="flex-1 h-11 text-sm gap-2"
+          onClick={() => setTxnDialogOpen(true)}
+        >
+          <ClipboardList className="h-4 w-4" />
+          Orders
+        </Button>
       </div>
 
       {/* Custom item dialog */}
@@ -264,6 +274,9 @@ export function POSItemPanel({ transaction: _transaction }: POSItemPanelProps) {
           </form>
         </DialogContent>
       </Dialog>
+
+      {/* Transactions dialog */}
+      <POSTransactionsDialog open={txnDialogOpen} onOpenChange={setTxnDialogOpen} />
     </div>
   )
 }