added product import and billing integration

lib/presentation/pos/widgets/page_header.dart

@@ -68,28 +68,7 @@ class PageHeader extends ConsumerWidget {
             const SizedBox(width: AppSpacing.xs),
           ],
 
-          Flexible(
-            child: Column(
-              mainAxisSize: MainAxisSize.min,
-              crossAxisAlignment: CrossAxisAlignment.start,
-              children: [
-                Text(
-                  module.title,
-                  overflow: TextOverflow.ellipsis,
-                  style: const TextStyle(
-                    fontSize: 19,
-                    fontWeight: FontWeight.w600,
-                    letterSpacing: -0.4,
-                    color: AppColors.textPrimary,
-                    height: 1.2,
-                  ),
-                ),
-                if (!compact) _Breadcrumb(module: module),
-              ],
-            ),
-          ),
 
-          const Spacer(),
 
           if (showStatus) ...[
             _LivePill(offline: ref.watch(simulateOfflineProvider)),
@@ -117,42 +96,6 @@ class PageHeader extends ConsumerWidget {
   }
 }
 
-class _Breadcrumb extends StatelessWidget {
-  const _Breadcrumb({required this.module});
-
-  final PosModule module;
-
-  @override
-  Widget build(BuildContext context) {
-    const style = TextStyle(fontSize: 12, color: AppColors.textTertiary);
-
-    return Row(
-      mainAxisSize: MainAxisSize.min,
-      children: [
-        const Text('Home', style: style),
-        const Padding(
-          padding: EdgeInsets.symmetric(horizontal: AppSpacing.xs + 2),
-          child: Icon(Icons.chevron_right_rounded,
-              size: 13, color: AppColors.textTertiary,),
-        ),
-        Text(module.section.label, style: style),
-        const Padding(
-          padding: EdgeInsets.symmetric(horizontal: AppSpacing.xs + 2),
-          child: Icon(Icons.chevron_right_rounded,
-              size: 13, color: AppColors.textTertiary,),
-        ),
-        Text(
-          module.label,
-          style: const TextStyle(
-            fontSize: 12,
-            fontWeight: FontWeight.w600,
-            color: AppColors.primary,
-          ),
-        ),
-      ],
-    );
-  }
-}
 
 /// What the pill is saying, in the order it takes precedence.
 enum _Liveness { offlineSim, halted, syncing, queued, live }
@@ -342,11 +285,24 @@ class _ParkedBillsButton extends ConsumerWidget {
                   '${Formatters.time(bill.parkedAt)}',
                 ),
                 onTap: () async {
+                  final hadItems =
+                      ref.read(cartControllerProvider).isNotEmpty;
                   await ref
                       .read(cartControllerProvider.notifier)
                       .resume(bill);
                   ref.invalidate(parkedBillsProvider);
-                  if (context.mounted) Navigator.of(context).pop();
+                  if (!context.mounted) return;
+                  Navigator.of(context).pop();
+                  if (hadItems) {
+                    ScaffoldMessenger.of(context)
+                      ..hideCurrentSnackBar()
+                      ..showSnackBar(const SnackBar(
+                        content: Text(
+                          'The cart you were on was saved back to Parked '
+                          'bills.',
+                        ),
+                      ),);
+                  }
                 },
               );
             },
@@ -370,12 +326,22 @@ class _NewSaleButton extends ConsumerWidget {
 
   @override
   Widget build(BuildContext context, WidgetRef ref) {
-    void start() {
-      ref.read(cartControllerProvider.notifier).reset();
+    Future<void> start() async {
+      final hadItems = ref.read(cartControllerProvider).isNotEmpty;
+      await ref.read(cartControllerProvider.notifier).startNewSale();
+      if (hadItems) ref.invalidate(parkedBillsProvider);
       ref.read(activeModuleProvider.notifier).state = PosModule.pos;
+
+      if (!context.mounted) return;
       ScaffoldMessenger.of(context)
         ..hideCurrentSnackBar()
-        ..showSnackBar(const SnackBar(content: Text('Started a new sale.')));
+        ..showSnackBar(SnackBar(
+          content: Text(
+            hadItems
+                ? 'Previous cart saved to Parked bills. Started a new sale.'
+                : 'Started a new sale.',
+          ),
+        ),);
     }
 
     if (compact) {