Ad and purchases enabled (still need actual testing)

lib/screens/main_shell.dart

@@ -269,6 +269,11 @@ class _MainShellState extends State<MainShell> {
       if (navigator.canPop()) navigator.pop();
       _tourPushedDataScreen = false;
     }
+    // Whether the tour finished naturally (on the Settings tab, since the
+    // last step lives there) or was skipped mid-way through (on whichever
+    // tab that step happened to be on), always land back on Receipts —
+    // that's the tab a first-time user should actually start using.
+    _jumpToTab(0);
     unawaited(context.read<AppState>().markOnboardingTourSeen());
   }