test(setup): pin the English wizard variant

The wizard's widget tests all ran in German, leaving the English
variant unverified (open follow-up from the setup redesign). One
EN walk now pins the localized step counter, scenario cards with
explanations, environment step and Next/Back navigation, and
asserts no German strings leak through.

Signed-off-by: flemming-it <stefan.a.flemming@googlemail.com>

test/guided_setup_test.dart

@@ -415,6 +415,56 @@ void main() {
     });
   });
 
+  group('English variant', () {
+    Widget hostEn() => MaterialApp(
+      locale: const Locale('en'),
+      localizationsDelegates: AppLocalizations.localizationsDelegates,
+      supportedLocales: AppLocalizations.supportedLocales,
+      home: Builder(
+        builder: (context) => Scaffold(
+          body: Center(
+            child: ElevatedButton(
+              onPressed: () => GuidedSetupDialog.show(context),
+              child: const Text('open'),
+            ),
+          ),
+        ),
+      ),
+    );
+
+    testWidgets('walks the three steps with localized cards, no German leaks', (
+      tester,
+    ) async {
+      await tester.pumpWidget(hostEn());
+      await tester.tap(find.text('open'));
+      await tester.pumpAndSettle();
+
+      // Step 1: English counter + scenario cards with explanations.
+      expect(find.text('Step 1 of 3'), findsOneWidget);
+      expect(find.text('Regulated production'), findsOneWidget);
+      expect(find.text('Just trying it out'), findsOneWidget);
+      expect(
+        find.textContaining('human approval before every AI step'),
+        findsOneWidget,
+      );
+      // Nothing renders in the other locale.
+      expect(find.text('Schritt 1 von 3'), findsNothing);
+      expect(find.text('Regulierter Produktivbetrieb'), findsNothing);
+
+      // Steps 2 and 3 walk with the English buttons.
+      await tester.tap(find.text('Next'));
+      await tester.pumpAndSettle();
+      expect(find.text('Step 2 of 3'), findsOneWidget);
+      await tester.tap(find.text('Next'));
+      await tester.pumpAndSettle();
+      expect(find.text('Step 3 of 3'), findsOneWidget);
+      expect(find.text('This computer'), findsOneWidget);
+      await tester.tap(find.text('Back'));
+      await tester.pumpAndSettle();
+      expect(find.text('Step 2 of 3'), findsOneWidget);
+    });
+  });
+
   group('parseSetupSuggestion', () {
     test('accepts a valid JSON object embedded in prose', () {
       final r = parseSetupSuggestion(