Connect sign-up to Sendico Facts intake (#46)

frontend/app/lib/auth/feedback.dart

@@ -22,6 +22,7 @@ class AuthFeedback extends StatelessWidget {
             AuthError.accountNotVerified => l.authVerifyEmail,
             AuthError.invalidCredentials => l.authInvalidCredentials,
             AuthError.emailInUse => l.authEmailInUse,
+            AuthError.signupNeedsAssistance => l.authSignupNeedsAssistance,
             AuthError.unavailable => l.authUnavailable,
             AuthError.unexpected => l.authUnexpected,
             AuthError.factorLocked => l.factorLocked,

frontend/app/lib/l10n/en.arb

@@ -1,5 +1,6 @@
 {
   "@@locale": "en",
+  "authSignupNeedsAssistance": "We could not finish setting up your account. Please contact support.",
   "appTitle": "SXCHNGE · Your next move",
   "nextChapter": "YOUR NEXT CHAPTER",
   "loginHeading": "Hey, welcome\nback.",

frontend/app/lib/l10n/ru.arb

@@ -1,5 +1,6 @@
 {
   "@@locale": "ru",
+  "authSignupNeedsAssistance": "Не удалось завершить создание аккаунта. Обратитесь в службу поддержки.",
   "appTitle": "SXCHNGE · Ваш следующий шаг",
   "nextChapter": "НОВАЯ ГЛАВА",
   "loginHeading": "Рады видеть\nвас снова.",

frontend/app/lib/verification/page.dart

@@ -122,8 +122,10 @@ class _VerificationPageState extends State<VerificationPage> {
               (_provider.service as SimulationInfo).isSimulated) ||
           state.isSimulated;
       final sent = status == VerificationStatus.sent;
+      final needsAssistance = state.error == VerificationError.needsAssistance;
       final retryConfirmation =
           status == VerificationStatus.error &&
+          !needsAssistance &&
           !_lastWasSend &&
           widget.token != null;
       final title = switch (status) {
@@ -139,14 +141,16 @@ class _VerificationPageState extends State<VerificationPage> {
               ? l.verificationChecking
               : l.verificationRequest,
       };
-      final body = switch (status) {
-        VerificationStatus.sent => l.verificationSent,
-        VerificationStatus.verified => l.verificationVerifiedBody,
-        VerificationStatus.expired => l.verificationExpiredBody,
-        VerificationStatus.invalid => l.verificationInvalidBody,
-        VerificationStatus.error => l.verificationInternalBody,
-        _ => null,
-      };
+      final body = needsAssistance
+          ? l.authSignupNeedsAssistance
+          : switch (status) {
+              VerificationStatus.sent => l.verificationSent,
+              VerificationStatus.verified => l.verificationVerifiedBody,
+              VerificationStatus.expired => l.verificationExpiredBody,
+              VerificationStatus.invalid => l.verificationInvalidBody,
+              VerificationStatus.error => l.verificationInternalBody,
+              _ => null,
+            };
       return Scaffold(
         body: SafeArea(
           child: SingleChildScrollView(

frontend/app/test/auth_services_test.dart

@@ -6,6 +6,8 @@ import 'package:flutter_test/flutter_test.dart';
 
 import 'package:go_router/go_router.dart';
 
+import 'package:sxchnge_analytics/sxchnge_analytics.dart';
+
 import 'package:sxchnge_auth/sxchnge_auth.dart';
 
 import 'package:sxchnge_app/main.dart';
@@ -41,6 +43,84 @@ class UnverifiedBackend extends BackendAuthServices {
 }
 
 void main() {
+  for (final language in ['en', 'ru']) {
+    testWidgets(
+      'signup requiring assistance preserves input and records failure ($language)',
+      (tester) async {
+        tester.view.physicalSize = const Size(390, 844);
+        tester.view.devicePixelRatio = 1;
+        tester.platformDispatcher.textScaleFactorTestValue = 1.5;
+        addTearDown(tester.view.resetPhysicalSize);
+        addTearDown(tester.view.resetDevicePixelRatio);
+        addTearDown(tester.platformDispatcher.clearTextScaleFactorTestValue);
+        final analytics = DummyAnalyticsService();
+        final locale = LocaleProvider(initialLocale: Locale(language));
+        await tester.pumpWidget(
+          SxchngeApp(
+            localeProvider: locale,
+            analyticsService: analytics,
+            signupService: const DummySignupService(
+              delay: Duration.zero,
+              failure: AuthError.signupNeedsAssistance,
+            ),
+          ),
+        );
+        await tester.pumpAndSettle();
+        final signupLabel = language == 'ru' ? 'Регистрация' : 'Sign up';
+        await tester.ensureVisible(find.text(signupLabel));
+        await tester.tap(find.text(signupLabel));
+        await tester.pumpAndSettle();
+        for (final entry in {
+          'name': 'Ada Lovelace',
+          'email': 'ada@example.com',
+          'password': 'password preserved',
+          'confirmation': 'password preserved',
+        }.entries) {
+          await tester.enterText(find.byKey(ValueKey(entry.key)), entry.value);
+        }
+        await tester.ensureVisible(find.byKey(const ValueKey('submit')));
+        await tester.tap(find.byKey(const ValueKey('submit')));
+        await tester.pumpAndSettle();
+        final feedback = find.byKey(const ValueKey('auth-error'));
+        await tester.ensureVisible(feedback);
+        expect(
+          find.text(
+            language == 'ru'
+                ? 'Не удалось завершить создание аккаунта. Обратитесь в службу поддержки.'
+                : 'We could not finish setting up your account. Please contact support.',
+          ),
+          findsOneWidget,
+        );
+        expect(find.byKey(const ValueKey('verification-sent')), findsNothing);
+        expect(
+          tester
+              .widget<TextFormField>(find.byKey(const ValueKey('email')))
+              .controller!
+              .text,
+          'ada@example.com',
+        );
+        expect(
+          tester
+              .widget<TextFormField>(find.byKey(const ValueKey('password')))
+              .controller!
+              .text,
+          'password preserved',
+        );
+        expect(
+          analytics.events.where((event) => event.name == 'auth_signup_failed'),
+          hasLength(1),
+        );
+        expect(
+          analytics.events.where(
+            (event) => event.name == 'auth_signup_succeeded',
+          ),
+          isEmpty,
+        );
+        expect(tester.takeException(), isNull);
+      },
+    );
+  }
+
   testWidgets('backend mode gates workspace and recovers unverified login', (
     tester,
   ) async {

frontend/app/test/verification_test.dart

@@ -42,6 +42,37 @@ Future<void> openVerification(
 }
 
 void main() {
+  testWidgets('resend assistance retains email and does not claim delivery', (
+    tester,
+  ) async {
+    await openVerification(
+      tester,
+      '/verification-sent',
+      service: const DummyVerificationService(
+        delay: Duration.zero,
+        sendFailure: VerificationError.needsAssistance,
+      ),
+    );
+    final email = find.byKey(const ValueKey('verification-email'));
+    await tester.enterText(email, 'ada@example.com');
+    await tester.ensureVisible(
+      find.byKey(const ValueKey('verification-resend')),
+    );
+    await tester.tap(find.byKey(const ValueKey('verification-resend')));
+    await tester.pumpAndSettle();
+    expect(
+      find.text(
+        'We could not finish setting up your account. Please contact support.',
+      ),
+      findsOneWidget,
+    );
+    expect(find.byKey(const ValueKey('verification-sent')), findsNothing);
+    expect(
+      tester.widget<TextFormField>(email).controller!.text,
+      'ada@example.com',
+    );
+    expect(tester.takeException(), isNull);
+  });
   for (final scenario in {
     'demo-valid': 'verified',
     'demo-expired': 'expired',