Badge unseenSalesCount di tab Riwayat (admin only), reset saat tab dibuka

lib/screens/home_page.dart

@@ -35,7 +35,7 @@ class _HomePageState extends State<HomePage> {
     return screens;
   }
 
-  List<BottomNavigationBarItem> _navItemsForRole(String? role) {
+  List<BottomNavigationBarItem> _navItemsForRole(String? role, AppState state) {
     final items = <BottomNavigationBarItem>[
       const BottomNavigationBarItem(
         icon: Icon(Icons.point_of_sale),
@@ -48,8 +48,12 @@ class _HomePageState extends State<HomePage> {
           icon: Icon(Icons.inventory_2),
           label: 'Produk',
         ),
-        const BottomNavigationBarItem(
-          icon: Icon(Icons.receipt_long),
+        BottomNavigationBarItem(
+          icon: Badge(
+            isLabelVisible: state.unseenSalesCount > 0,
+            label: Text('${state.unseenSalesCount}'),
+            child: const Icon(Icons.receipt_long),
+          ),
           label: 'Riwayat',
         ),
         const BottomNavigationBarItem(
@@ -76,7 +80,7 @@ class _HomePageState extends State<HomePage> {
   Widget build(BuildContext context) {
     final state = context.watch<AppState>();
     final screens = _screensForRole(state.userRole);
-    final navItems = _navItemsForRole(state.userRole);
+    final navItems = _navItemsForRole(state.userRole, state);
 
     final safeIndex = _index >= screens.length ? 0 : _index;
 
@@ -109,7 +113,14 @@ class _HomePageState extends State<HomePage> {
       bottomNavigationBar: navItems.length >= 2
           ? BottomNavigationBar(
               currentIndex: safeIndex,
-              onTap: (i) => setState(() => _index = i),
+              onTap: (i) {
+                setState(() => _index = i);
+                // Reset badge saat tab Riwayat dibuka.
+                final riwayatIdx = state.userRole == 'admin' ? 2 : 1;
+                if (i == riwayatIdx) {
+                  context.read<AppState>().markSalesSeen();
+                }
+              },
               items: navItems,
             )
           : null,

lib/state/app_state.dart

@@ -33,6 +33,16 @@ class AppState extends ChangeNotifier {
       StreamController<Sale>.broadcast();
   final Set<String> _notifiedSaleIds = {};
 
+  // Jumlah transaksi baru yang belum dilihat admin (badge di tab Riwayat).
+  int unseenSalesCount = 0;
+
+  void markSalesSeen() {
+    if (unseenSalesCount != 0) {
+      unseenSalesCount = 0;
+      notifyListeners();
+    }
+  }
+
   // Client dengan service_role key untuk operasi admin (buat/edit/hapus akun kasir).
   // PERINGATAN: key ini bypass RLS — hanya untuk app POS di device terpercaya.
   final SupabaseClient _admin = SupabaseClient(supabaseUrl, supabaseServiceKey);
@@ -159,6 +169,7 @@ class AppState extends ChangeNotifier {
       return;
     }
     final now = DateTime.now();
+    bool newSeen = false;
     for (final s in sales) {
       if (!_notifiedSaleIds.contains(s.id)) {
         _notifiedSaleIds.add(s.id);
@@ -166,12 +177,16 @@ class AppState extends ChangeNotifier {
         // Lewati juga transaksi sendiri — admin tahu kalau dia yang jualan.
         if (!_salesFirstLoad &&
             s.userId != userId &&
-            now.difference(s.date).inMinutes.abs() <= 5 &&
-            !newSaleNotifications.isClosed) {
-          newSaleNotifications.add(s);
+            now.difference(s.date).inMinutes.abs() <= 5) {
+          newSeen = true;
+          unseenSalesCount++;
+          if (!newSaleNotifications.isClosed) {
+            newSaleNotifications.add(s);
+          }
         }
       }
     }
+    if (newSeen) notifyListeners();
     _salesFirstLoad = false;
   }