flagged bugs fix

lib/features/booking/screens/booking_pickup_screen.dart

@@ -130,6 +130,12 @@ class _BookingPickupScreenState extends State<BookingPickupScreen> {
       if (match != null) draft.pickupPincode = match.group(0)!;
     }
 
+    if (draft.pickupPincode.isEmpty) {
+      _showValidationError('Missing Pickup Pincode',
+          'We couldn\'t detect a pincode for your pickup address. Please use "Use GPS current location", pick a saved address, or include the 6-digit pincode in the address.');
+      return;
+    }
+
     setState(() => _loading = true);
     await appState.fetchPriceEstimate();
     setState(() => _loading = false);

lib/features/booking/screens/payment_sheet.dart

@@ -3,6 +3,7 @@ import 'package:provider/provider.dart';
 
 import 'package:doormile/main.dart';
 import 'package:doormile/shared/state/app_state.dart';
+import 'package:doormile/core/utils/snackbar_utils.dart';
 import 'package:doormile/core/theme/app_colors.dart';
 import 'package:doormile/core/theme/app_theme.dart';
 import 'package:doormile/core/widgets/common.dart';
@@ -51,13 +52,20 @@ class _PaymentSheetState extends State<_PaymentSheet> {
     state.draft.paymentMethod = _methods[_selected].name;
     await Future.delayed(const Duration(milliseconds: 1400));
     if (!mounted) return;
-    state.placeOrder();
-    Navigator.pop(context); // close sheet
-    Navigator.pushNamedAndRemoveUntil(
-      context,
-      Routes.bookingSuccess,
-      (r) => r.settings.name == Routes.home,
-    );
+    try {
+      await state.placeOrder();
+      if (!mounted) return;
+      Navigator.pop(context); // close sheet
+      Navigator.pushNamedAndRemoveUntil(
+        context,
+        Routes.bookingSuccess,
+        (r) => r.settings.name == Routes.home,
+      );
+    } catch (e) {
+      if (!mounted) return;
+      setState(() => _processing = false);
+      SnackbarUtils.showError(context, e.toString());
+    }
   }
 
   @override