pos changes

lib/presentation/pos/screens/pos_dashboard_screen.dart

@@ -35,6 +35,11 @@ import 'pos_view.dart';
 /// * `1120–1300` sidebar as an icon rail, docked bill
 /// * `920–1120`  icon rail, bill becomes a bottom sheet
 /// * `< 920`     sidebar goes off-canvas behind a menu button
+///
+/// In cashier mode the sidebar is not rendered at any width. That session has
+/// exactly two destinations, and both are reachable from the header — a rail
+/// holding one live tile is chrome for its own sake. Sign-out and the sync log
+/// move up with it, since the sidebar was the only place they lived.
 class PosDashboardScreen extends ConsumerStatefulWidget {
   const PosDashboardScreen({super.key});
 
@@ -119,10 +124,15 @@ class _PosDashboardScreenState extends ConsumerState<PosDashboardScreen> {
   @override
   Widget build(BuildContext context) {
     final layout = PosLayout.of(context);
-    final module = ref.watch(activeModuleProvider);
+    // Clamped, not raw: a module the admin left active must not carry into a
+    // cashier session.
+    final module = ref.watch(resolvedModuleProvider);
     final ready = ref.watch(catalogueReadyProvider);
     final isPos = module == PosModule.pos && ready;
 
+    final cashierMode = ref.watch(isCashierModeProvider);
+    final showSidebar = !cashierMode;
+
     // Only the terminal itself needs the bill docked beside it.
     final showDockedBill = isPos && !layout.billingIsSheet;
     final showCartFab = isPos && layout.billingIsSheet;
@@ -130,7 +140,7 @@ class _PosDashboardScreenState extends ConsumerState<PosDashboardScreen> {
     return Scaffold(
       key: _scaffoldKey,
       backgroundColor: AppColors.background,
-      drawer: layout.sidebarIsDrawer
+      drawer: showSidebar && layout.sidebarIsDrawer
           ? Drawer(
               width: PosLayout.expandedWidth,
               backgroundColor: AppColors.surface,
@@ -157,13 +167,18 @@ class _PosDashboardScreenState extends ConsumerState<PosDashboardScreen> {
           child: Row(
             crossAxisAlignment: CrossAxisAlignment.stretch,
             children: [
-              if (!layout.sidebarIsDrawer) AppSidebar(mode: layout.sidebar),
+              if (showSidebar && !layout.sidebarIsDrawer)
+                AppSidebar(mode: layout.sidebar),
               Expanded(
                 child: Column(
                   children: [
                     PageHeader(
                       layout: layout,
-                      onMenuTap: () => _scaffoldKey.currentState?.openDrawer(),
+                      // Nothing to open in cashier mode, so the button is not
+                      // offered rather than opening an empty drawer.
+                      onMenuTap: showSidebar
+                          ? () => _scaffoldKey.currentState?.openDrawer()
+                          : null,
                     ),
                     Expanded(
                       child: AnimatedSwitcher(