feat: add setting for auto-lock fix: fix sideswipe

lib/services/bar_tab_service.dart

@@ -17,6 +17,11 @@ abstract class BarTabService {
 
   Future<BarTab> createTab({required String customerName});
 
+  Future<void> renameTab({required String tabId, required String customerName});
+
+  /// Deletes an open tab and returns its items to inventory.
+  Future<List<TabItem>> deleteTab(String tabId);
+
   Future<void> addProductToTab({
     required String tabId,
     required Product product,
@@ -203,6 +208,61 @@ class DriftBarTabService implements BarTabService {
     return tab;
   }
 
+  @override
+  Future<void> renameTab({
+    required String tabId,
+    required String customerName,
+  }) async {
+    final name = customerName.trim();
+    if (name.isEmpty) {
+      throw ArgumentError.value(
+        customerName,
+        'customerName',
+        'Must not be empty',
+      );
+    }
+
+    final updatedRows =
+        await (database.update(database.barTabs)
+              ..where((tab) => tab.id.equals(tabId)))
+            .write(BarTabsCompanion(customerName: Value(name)));
+
+    if (updatedRows != 1) {
+      throw StateError('Tab not found.');
+    }
+  }
+
+  @override
+  Future<List<TabItem>> deleteTab(String tabId) async {
+    return database.transaction(() async {
+      final tab = await (database.select(
+        database.barTabs,
+      )..where((row) => row.id.equals(tabId))).getSingleOrNull();
+
+      if (tab == null) return <TabItem>[];
+
+      final items = await _getItemsForTab(tabId);
+
+      for (final item in items) {
+        await _increaseProductStock(item.productId, item.quantity);
+      }
+
+      await (database.delete(
+        database.tabItems,
+      )..where((item) => item.tabId.equals(tabId))).go();
+
+      final deletedRows = await (database.delete(
+        database.barTabs,
+      )..where((row) => row.id.equals(tabId))).go();
+
+      if (deletedRows != 1) {
+        throw StateError('Tab was changed before it could be deleted');
+      }
+
+      return items;
+    });
+  }
+
   @override
   Future<void> addProductToTab({
     required String tabId,