pos changes

lib/data/datasources/local_store.dart

@@ -9,6 +9,7 @@ import '../local/staff_dao.dart';
 import '../local/sync_config_store.dart';
 import '../local/sync_log_dao.dart';
 import '../local/terminal_identity.dart';
+import '../local/void_pin_store.dart';
 
 /// Terminal-side storage facade.
 ///
@@ -28,6 +29,7 @@ class LocalStore {
   late PromoDao promos;
   late SyncConfigStore syncConfig;
   late TerminalIdentityStore identityStore;
+  late VoidPinStore voidPin;
 
   /// Who this till is. Minted on first run, then stable forever.
   late TerminalIdentity terminal;
@@ -60,6 +62,7 @@ class LocalStore {
     promos = PromoDao(AppDatabase.instance.db);
     syncConfig = SyncConfigStore(catalogue);
     identityStore = TerminalIdentityStore(catalogue);
+    voidPin = VoidPinStore(catalogue, staff);
 
     // A terminal with no staff cannot be signed into at all, so this runs
     // before anything else can ask who is on shift.
@@ -148,9 +151,13 @@ class LocalStore {
 
   /// Drops the imported catalogue from disk and from the in-memory cache.
   ///
-  /// Called at sign-out so the next shift never bills against a copy left
-  /// over from this one — [hasCatalogue] goes back to false, and the only way
-  /// to sell again is a fresh pull from the back office.
+  /// Called when a *cashier* signs out, so the next shift never bills against
+  /// a copy left over from this one — [hasCatalogue] goes back to false, and
+  /// the only way to sell again is a fresh pull from the back office.
+  ///
+  /// Not called on an admin sign-out. An admin's whole job at this terminal is
+  /// to pull the catalogue and hand the till over, so wiping it on the way out
+  /// would undo the thing they just did.
   Future<void> clearCatalogue() async {
     await catalogue.clearCatalogue();
     _products.clear();