third commit

lib/presentation/receipt/screens/receipt_screen.dart

@@ -16,6 +16,7 @@ import '../../../core/utils/formatters.dart';
 import '../../../core/widgets/glass_card.dart';
 import '../../../core/widgets/primary_button.dart';
 import '../../../domain/entities/transaction.dart';
+import '../../modules/providers/printer_settings.dart';
 import '../../pos/providers/cart_controller.dart';
 import '../widgets/receipt_preview.dart';
 
@@ -37,6 +38,30 @@ class _ReceiptScreenState extends ConsumerState<ReceiptScreen> {
   @override
   void initState() {
     super.initState();
+
+    // Auto-print is opt-in and only fires when a printer was actually
+    // selected, so it can never fail invisibly on a terminal with none.
+    WidgetsBinding.instance.addPostFrameCallback((_) async {
+      final settings = ref.read(printerSettingsProvider);
+      if (!settings.autoPrint || !settings.hasPrinter) return;
+
+      final ok = await ref.read(receiptServiceProvider).printDirect(
+            widget.transaction,
+            printerUrl: settings.printerUrl,
+          );
+      if (!ok && mounted) {
+        _cancelAutoReturn();
+        ScaffoldMessenger.of(context)
+          ..hideCurrentSnackBar()
+          ..showSnackBar(const SnackBar(
+            backgroundColor: AppColors.danger,
+            content: Text(
+              'Printer did not respond — use Print to send it again.',
+            ),
+          ));
+      }
+    });
+
     _timer = Timer.periodic(const Duration(seconds: 1), (t) {
       if (!mounted) return;
       setState(() => _seconds--);
@@ -182,31 +207,85 @@ class _ReceiptScreenState extends ConsumerState<ReceiptScreen> {
           ),
 
           const SizedBox(height: AppSpacing.xxl),
-          Row(children: [
-            Expanded(
-              child: PrimaryButton(
-                label: 'Reprint',
-                icon: Icons.print_outlined,
-                tone: ButtonTone.neutral,
-                onPressed: () {
-                  _cancelAutoReturn();
-                  ref.read(receiptServiceProvider).printWithDialog(txn);
-                },
+          // Wrap, so three actions never overflow a narrow terminal.
+          Wrap(
+            spacing: AppSpacing.md,
+            runSpacing: AppSpacing.md,
+            children: [
+              SizedBox(
+                width: 150,
+                child: PrimaryButton(
+                  label: 'Print',
+                  icon: Icons.print_outlined,
+                  tone: ButtonTone.neutral,
+                  onPressed: () async {
+                    _cancelAutoReturn();
+                    final settings = ref.read(printerSettingsProvider);
+                    final service = ref.read(receiptServiceProvider);
+
+                    // Straight to the roll when one is configured; otherwise
+                    // the system preview, which works with no hardware.
+                    final printed = settings.hasPrinter &&
+                        await service.printDirect(
+                          txn,
+                          printerUrl: settings.printerUrl,
+                        );
+                    if (!printed) await service.printPreview(txn);
+                  },
+                ),
+              ),
+              SizedBox(
+                width: 170,
+                child: PrimaryButton(
+                  label: 'WhatsApp',
+                  icon: Icons.chat_rounded,
+                  tone: txn.customer == null
+                      ? ButtonTone.neutral
+                      : ButtonTone.ghost,
+                  onPressed: txn.customer == null
+                      ? null
+                      : () async {
+                          _cancelAutoReturn();
+                          final sent = await ref
+                              .read(receiptServiceProvider)
+                              .sendToWhatsApp(txn);
+                          if (!context.mounted || sent) return;
+                          ScaffoldMessenger.of(context)
+                            ..hideCurrentSnackBar()
+                            ..showSnackBar(const SnackBar(
+                              content: Text(
+                                'Could not open WhatsApp on this device.',
+                              ),
+                            ));
+                        },
+                ),
+              ),
+              SizedBox(
+                width: 170,
+                child: PrimaryButton(
+                  label: 'Share PDF',
+                  icon: Icons.ios_share_rounded,
+                  tone: ButtonTone.neutral,
+                  onPressed: () {
+                    _cancelAutoReturn();
+                    ref.read(receiptServiceProvider).sharePdf(txn);
+                  },
+                ),
+              ),
+            ],
+          ),
+          if (txn.customer == null)
+            const Padding(
+              padding: EdgeInsets.only(top: AppSpacing.sm),
+              child: Text(
+                'No mobile number captured, so WhatsApp is unavailable for '
+                'this bill.',
+                style: TextStyle(
+                  fontSize: 12,
+                  color: AppColors.textTertiary,
+                ),
               ),
             ),
-            const SizedBox(width: AppSpacing.md),
-            Expanded(
-              child: PrimaryButton(
-                label: 'Share',
-                icon: Icons.ios_share_rounded,
-                tone: ButtonTone.neutral,
-                onPressed: () {
-                  _cancelAutoReturn();
-                  ref.read(receiptServiceProvider).share(txn);
-                },
-              ),
-            ),
-          ]),
           const SizedBox(height: AppSpacing.md),
           PrimaryButton(
             label: _seconds > 0