third commit

lib/data/repositories/sync_repository_impl.dart

@@ -1,3 +1,5 @@
+import 'dart:convert';
+
 import 'package:uuid/uuid.dart';
 
 import '../../core/utils/formatters.dart';
@@ -99,14 +101,37 @@ class SyncRepositoryImpl implements SyncRepository {
     required String cashierName,
   }) async {
     final today = DateTime.now();
-    final orders = await _store.orders.forBusinessDate(today);
 
-    return ShiftReport.fromTransactions(
-      transactions: orders,
+    // Bills still held locally.
+    final live = ShiftReport.fromTransactions(
+      transactions: await _store.orders.forBusinessDate(today),
       businessDate: today,
       terminalId: terminalId,
       cashierName: cashierName,
     );
+
+    // Bills already uploaded and deleted survive only as archived totals.
+    final row = await _store.orders.dayArchive(today);
+    if (row == null) return live;
+
+    final payments = (jsonDecode(row['payments_json']! as String)
+            as Map<String, Object?>)
+        .map(
+          (k, v) => MapEntry(
+            PaymentMethod.values.byName(k),
+            (v! as num).toDouble(),
+          ),
+        );
+
+    final archived = ShiftReport.fromArchive(
+      row: row,
+      payments: payments,
+      businessDate: today,
+      terminalId: terminalId,
+      cashierName: cashierName,
+    );
+
+    return archived + live;
   }
 
   @override
@@ -152,10 +177,13 @@ class SyncRepositoryImpl implements SyncRepository {
         pending.map(_orderToPayload).toList(),
       );
 
-      onProgress?.call(0.85, 'Marking bills as synced…');
+      onProgress?.call(0.85, 'Clearing uploaded bills from this terminal…');
 
-      // Only what the server confirmed is flipped to 1.
-      await _store.orders.markSynced(accepted);
+      // Only what the server confirmed is archived and removed. Anything it
+      // did not acknowledge stays on disk.
+      final acceptedOrders =
+          pending.where((o) => accepted.contains(o.id)).toList();
+      await _store.orders.archiveAndDelete(acceptedOrders);
       await _store.refreshUnsyncedCount();
 
       final rejected = ids.where((id) => !accepted.contains(id)).toList();