Merge pull request 'Explain missing currency account setup' (#68) from wallet-66 into main

docs/ux/auth-journeys.md

@@ -296,3 +296,66 @@ real token was checked read-only and remains unused and unexpired, with its
 account pending verification, ready for the user to reopen the link. PR #61 has
 not been merged into remote main; this local deployment does not imply a main
 branch merge.
+
+### Accepted signup delivery (#62)
+
+Task [#62](https://git.sendico.io/tech/sxchnge/issues/62), branch
+`email-verification-62`, delivered in
+[PR #63](https://git.sendico.io/tech/sxchnge/pulls/63). On October 23, signup
+returned HTTP 202 and the local
+SMTP provider accepted its message with status 250, while the user reported an
+internal-error screen immediately after Create account. No subsequent
+verification request from that attempt reached the BFF. The precise original
+client exception was not captured; an ordinary isolated release reproduction
+succeeded. The regression below deliberately injects an unavailable follow-up
+send service to cover the post-acceptance failure path without claiming that
+injected exception was the original cause.
+
+Backend and preview signup mappers now return a `VerificationDelivery` domain
+receipt with the recipient and simulation status. It means that signup accepted
+the email-queue operation, not inbox delivery, account activation or a session.
+The signup provider exposes it through its operation result. The form captures
+the receipt before clearing password controllers, whose change listeners reset
+auth state, and passes it as transient router extra. The verification provider
+initializes directly in the sent state; mounting the page performs no send.
+This replaces the backend adapter's hidden one-use signup cache. Every explicit
+resend now invokes its service, including the first one after signup.
+
+Routes without a receipt retain their existing behavior: unverified login may
+request an email, a fresh verification page asks for an address, and emailed
+links run confirmation. Recipient changes invalidate the displayed claim until
+another send succeeds. New receipts replace stale recipients. The route codec
+discards the receipt when serializing history, so reloads do not invent a queued
+result or retain the address. No token or password is included in the receipt.
+
+The existing email-delivery requested/succeeded signals now follow the accepted
+signup receipt inside the instrumented service instead of a synthetic send on
+page mount. They stay in the signup journey, occur once for the accepted
+operation, and remain intermediate queue-acceptance signals. Resends retain
+separate attempts and failures; confirmation remains the terminal outcome.
+Simulation and privacy rules are unchanged, including the in-memory analytics
+and cross-device correlation limitations above.
+
+Frontend review covered the complete app/auth contribution and preserved the
+DTO, mapper, service, domain model, provider and UI boundaries. Regressions cover
+accepted signup followed by unavailable resend, explicit retry, normalized
+receipt mapping, provider initialization/reset, recipient replacement, transient
+history, event correlation and exclusion of form values from analytics. EN/RU
+flow tests run at 390px with 1.5x text scaling; existing keyboard, autofill and
+accessibility suites also pass. Changed-file Dart format checks, analysis in
+`frontend/app` and `frontend/packages/sxchnge_auth`, and `make test-frontend`
+(221 tests) pass. The new injected-failure regression failed on the previous
+implementation and passes with the receipt handoff. A release-browser fixture
+with the same backend adapter and a failing resend service shows Check your
+inbox after signup with no send call, then the expected error only after an
+explicit resend. It sends no email. Native Safari was not automated.
+
+The frontend image was rebuilt with freshly resolved stable digest pins and
+recreated without restarting BFF. The served JavaScript matches the new image
+at SHA-256 `0a45ce6f0b4658b1f03d8e39b9e39fd3fbfcf6f1626cb3f17705dce2da130a6c`.
+Normal browser-trust HTTPS serves the frontend and API with HTTP 200.
+`sh infra/local/tools.sh verify` passes all seven services, Vault/database
+checks and authenticated Sendico currency/ledger reads. No new customer email,
+activation or payment was submitted for this change, and no security scan was
+requested or run. The user's pre-existing browser tab must reload to use the
+new bundle; their original Safari exception remains unobserved.

docs/ux/kyc.md

@@ -167,3 +167,47 @@ This is a display correction within the existing KYC journey, so no additional
 analytics events or financial data collection are introduced. Tests cover mapping
 without inferring remaining, unused/exhausted/over-cap/zero-cap ratios and EN/RU
 usage display at 320px with 1.6 text scaling.
+
+## Residence country selection — task #64
+
+Task [#64](https://git.sendico.io/tech/sxchnge/issues/64), branch `kyc-64`.
+Delivery: [PR #65](https://git.sendico.io/tech/sxchnge/pulls/65).
+The profile now shows a country name and opens a searchable country list instead
+of asking customers to type a two-letter code. Names follow the English/Russian
+app locale. Search accepts localized or English names and two-letter codes,
+ignoring case and surrounding whitespace. Selection updates only
+`IdentityProfile.residenceCountry` with the country code; the existing provider,
+service, mapper and transport contracts remain unchanged.
+
+The `country_picker` dependency supplies bundled country data, code lookup and
+translations through `CountryService` and `CountryLocalizations`. Flutter Material
+controls provide the search interface, explicit no-results recovery, minimum
+touch targets, keyboard selection, a selected-state checkmark, Back and Escape.
+The package's built-in list omits explicit no-results feedback and uses shorter
+row targets, so its data/localizations are reused with standard Material controls.
+There is no remote lookup, copied country table or extra application provider.
+Cancelling preserves the current profile, prefilled codes display names, busy
+state disables opening the selector, and the search controller is disposed with
+its dialog. The list is a data catalogue; backend eligibility remains authoritative.
+
+This change stays within the existing KYC preparation/submission journey and its
+measurement definitions above. No selector events, queries, names or country
+codes are added to telemetry. Existing acceptance/failure/retry/abandonment
+signals and documented server-side review measurement gaps still apply.
+
+Focused widget checks cover name/code search, code-only updates, reselection,
+cancel, no-results recovery, clearing search, saved values, locale changes,
+Russian names, disabled state, keyboard activation/selection/Escape and labeled
+touch targets. A long country name fits at 320px with 1.6 text scale. Existing
+EN/RU verification journeys now select a country and assert the profile code
+before continuing through document submission. Native screen-reader and device
+keyboard testing remain release checks; widget semantics checks do not establish
+those device outcomes.
+
+Validation: five changed Dart files passed the format check; `flutter analyze`
+in `frontend/app` reported no issues; `make test-frontend` passed all 222 tests;
+and `flutter build web` passed, including its Wasm compatibility dry run. Browser
+smoke testing on the local demo opened the selector, searched for Poland and
+confirmed that the profile displays Poland after selection. Focused and full
+journey tests verify the stored `PL` code. Generated localization/build outputs
+remain ignored and uncommitted.

frontend/app/lib/auth/form.dart

@@ -99,10 +99,11 @@ class _AuthFormState extends State<AuthForm> {
         return;
       }
       final email = _email.text.trim();
+      final delivery = signup.state.result!.delivery;
       TextInput.finishAutofillContext();
       _password.clear();
       _confirmation.clear();
-      context.goNamed(AppRoutes.verificationSent, extra: email);
+      context.goNamed(AppRoutes.verificationSent, extra: delivery ?? email);
     } else {
       final login = context.read<LoginProvider>();
       await login.login(

frontend/app/lib/kyc/country.dart

@@ -0,0 +1,163 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+import 'package:country_picker/country_picker.dart';
+
+import '../generated/i18n/app_localizations.dart';
+
+class CountryField extends StatelessWidget {
+  const CountryField({
+    super.key,
+    required this.value,
+    required this.onChanged,
+    this.enabled = true,
+  });
+
+  final String value;
+  final ValueChanged<String> onChanged;
+  final bool enabled;
+
+  @override
+  Widget build(BuildContext context) {
+    final l = AppLocalizations.of(context)!;
+    final country = CountryService().findByCode(value);
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        Text(l.kycCountry, style: Theme.of(context).textTheme.labelLarge),
+        const SizedBox(height: 8),
+        Semantics(
+          label: l.kycCountry,
+          child: OutlinedButton(
+            onPressed: !enabled
+                ? null
+                : () async {
+                    final code = await showDialog<String>(
+                      context: context,
+                      builder: (_) => _CountrySearch(selected: value),
+                    );
+                    if (context.mounted && code != null) onChanged(code);
+                  },
+            style: OutlinedButton.styleFrom(
+              shape: RoundedRectangleBorder(
+                borderRadius: BorderRadius.circular(14),
+              ),
+            ),
+            child: Row(
+              children: [
+                Expanded(
+                  child: Text(
+                    country == null
+                        ? l.kycCountrySelect
+                        : _name(context, country),
+                  ),
+                ),
+                const SizedBox(width: 8),
+                const Icon(Icons.expand_more),
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+String _name(BuildContext context, Country country) =>
+    country.getTranslatedName(context) ?? country.name;
+
+class _CountrySearch extends StatefulWidget {
+  const _CountrySearch({required this.selected});
+
+  final String selected;
+
+  @override
+  State<_CountrySearch> createState() => _CountrySearchState();
+}
+
+class _CountrySearchState extends State<_CountrySearch> {
+  final _query = TextEditingController();
+  final _countries = {
+    for (final country in CountryService().getAll())
+      country.countryCode: country,
+  }.values.toList();
+
+  @override
+  void dispose() {
+    _query.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final l = AppLocalizations.of(context)!;
+    return Focus(
+      autofocus: true,
+      onKeyEvent: (_, event) {
+        if (event is KeyDownEvent &&
+            event.logicalKey == LogicalKeyboardKey.escape) {
+          Navigator.of(context).pop();
+          return KeyEventResult.handled;
+        }
+        return KeyEventResult.ignored;
+      },
+      child: Dialog.fullscreen(
+        child: Scaffold(
+          appBar: AppBar(
+            leading: BackButton(onPressed: () => Navigator.of(context).pop()),
+            title: TextField(
+              key: const ValueKey('country-search'),
+              controller: _query,
+              autofocus: true,
+              decoration: InputDecoration(
+                labelText: l.kycCountrySearch,
+                prefixIcon: const Icon(Icons.search),
+              ),
+              onChanged: (_) => setState(() {}),
+            ),
+            toolbarHeight: 96,
+            actions: [
+              if (_query.text.isNotEmpty)
+                IconButton(
+                  tooltip: l.kycCountryClearSearch,
+                  icon: const Icon(Icons.clear),
+                  onPressed: () => setState(_query.clear),
+                ),
+            ],
+          ),
+          body: _list(context),
+        ),
+      ),
+    );
+  }
+
+  Widget _list(BuildContext context) {
+    final search = _query.text.trim().toLowerCase();
+    final countries = _countries.where((country) {
+      return _name(context, country).toLowerCase().contains(search) ||
+          country.name.toLowerCase().contains(search) ||
+          country.countryCode.toLowerCase() == search;
+    }).toList()..sort((a, b) => _name(context, a).compareTo(_name(context, b)));
+    if (countries.isEmpty) {
+      return Center(
+        child: Padding(
+          padding: const EdgeInsets.all(24),
+          child: Text(AppLocalizations.of(context)!.kycCountryEmpty),
+        ),
+      );
+    }
+    return ListView.builder(
+      itemCount: countries.length,
+      itemBuilder: (context, index) {
+        final country = countries[index];
+        final isSelected = country.countryCode == widget.selected;
+        return ListTile(
+          title: Text(_name(context, country)),
+          selected: isSelected,
+          trailing: isSelected ? const Icon(Icons.check) : null,
+          onTap: () => Navigator.of(context).pop(country.countryCode),
+        );
+      },
+    );
+  }
+}

frontend/app/lib/kyc/profile.dart

@@ -2,6 +2,8 @@ import 'package:flutter/material.dart';
 
 import 'package:sxchnge_kyc/sxchnge_kyc.dart';
 
+import 'country.dart';
+
 import '../generated/i18n/app_localizations.dart';
 
 class ProfileForm extends StatelessWidget {
@@ -48,17 +50,11 @@ class ProfileForm extends StatelessWidget {
           onChanged: (value) => update(birth: value.trim()),
         ),
         const SizedBox(height: 16),
-        TextFormField(
+        CountryField(
           key: const ValueKey('kyc-country'),
-          initialValue: p.profile.residenceCountry,
+          value: p.profile.residenceCountry,
           enabled: !p.busy,
-          maxLength: 2,
-          textCapitalization: TextCapitalization.characters,
-          decoration: InputDecoration(
-            labelText: l.kycCountry,
-            helperText: l.kycCountryHelp,
-          ),
-          onChanged: (value) => update(country: value.trim().toUpperCase()),
+          onChanged: (value) => update(country: value),
         ),
         if (!p.profile.isComplete) Text(l.kycProfileRequired),
       ],

frontend/app/lib/l10n/en.arb

@@ -271,8 +271,11 @@
   "kycBirth": "Date of birth",
   "kycBirthHelp": "YYYY-MM-DD, for example 1990-04-23",
   "kycCountry": "Country of residence",
-  "kycCountryHelp": "Two-letter country code, for example PL or DE",
-  "kycProfileRequired": "Enter your full name, a valid date of birth and a two-letter country code to continue.",
+  "kycCountrySelect": "Select a country",
+  "kycCountrySearch": "Search countries",
+  "kycCountryEmpty": "No countries found. Try another name or country code.",
+  "kycCountryClearSearch": "Clear search",
+  "kycProfileRequired": "Enter your full name, a valid date of birth and select your country of residence to continue.",
   "kycContinue": "Continue to my account",
   "kycOperationMinimum": "Per operation minimum",
   "kycOperationMaximum": "Per operation maximum",

frontend/app/lib/l10n/ru.arb

@@ -271,8 +271,11 @@
   "kycBirth": "Дата рождения",
   "kycBirthHelp": "ГГГГ-ММ-ДД, например 1990-04-23",
   "kycCountry": "Страна проживания",
-  "kycCountryHelp": "Код страны из двух букв, например PL или DE",
-  "kycProfileRequired": "Укажите полное имя, корректную дату рождения и код страны из двух букв.",
+  "kycCountrySelect": "Выберите страну",
+  "kycCountrySearch": "Поиск страны",
+  "kycCountryEmpty": "Страны не найдены. Попробуйте другое название или код страны.",
+  "kycCountryClearSearch": "Очистить поиск",
+  "kycProfileRequired": "Укажите полное имя, корректную дату рождения и выберите страну проживания.",
   "kycContinue": "Перейти в личный кабинет",
   "kycOperationMinimum": "Минимум на операцию",
   "kycOperationMaximum": "Максимум на операцию",

frontend/app/lib/main.dart

@@ -2,6 +2,8 @@ import 'package:flutter/material.dart';
 
 import 'package:flutter_web_plugins/url_strategy.dart';
 
+import 'package:country_picker/country_picker.dart';
+
 import 'package:provider/provider.dart';
 
 import 'package:sxchnge_analytics/sxchnge_analytics.dart';
@@ -195,7 +197,10 @@ class _SxchngeAppState extends State<SxchngeApp> {
         debugShowCheckedModeBanner: false,
         theme: SxchngeTheme.light(),
         locale: locale.locale,
-        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        localizationsDelegates: const [
+          ...AppLocalizations.localizationsDelegates,
+          CountryLocalizations.delegate,
+        ],
         supportedLocales: AppLocalizations.supportedLocales,
         routerConfig: _router,
       ),

frontend/app/lib/routing/router.dart

@@ -4,6 +4,8 @@ import 'package:flutter/widgets.dart';
 
 import 'package:go_router/go_router.dart';
 
+import 'package:sxchnge_auth/sxchnge_auth.dart';
+
 import 'package:sxchnge_wallet/sxchnge_wallet.dart';
 
 import '../auth/page.dart';
@@ -144,6 +146,9 @@ GoRouter createAppRouter({bool Function()? authenticated}) {
         name: AppRoutes.verificationSent,
         builder: (context, state) => VerificationPage(
           email: state.extra is String ? state.extra as String : null,
+          delivery: state.extra is VerificationDelivery
+              ? state.extra as VerificationDelivery
+              : null,
         ),
       ),
       GoRoute(

frontend/app/lib/verification/page.dart

@@ -15,9 +15,10 @@ import '../routing/routes.dart';
 import '../generated/i18n/app_localizations.dart';
 
 class VerificationPage extends StatefulWidget {
-  const VerificationPage({super.key, this.email, this.token});
+  const VerificationPage({super.key, this.email, this.token, this.delivery});
   final String? email;
   final String? token;
+  final VerificationDelivery? delivery;
 
   @override
   State<VerificationPage> createState() => _VerificationPageState();
@@ -25,9 +26,12 @@ class VerificationPage extends StatefulWidget {
 
 class _VerificationPageState extends State<VerificationPage> {
   final _form = GlobalKey<FormState>();
-  late final _email = TextEditingController(text: widget.email);
+  late final _email = TextEditingController(
+    text: widget.delivery?.email ?? widget.email,
+  );
   late final _provider = VerificationProvider(
     context.read<VerificationService>(),
+    delivery: widget.delivery,
   );
   final _emailFocus = FocusNode();
   String? _recipient;
@@ -44,7 +48,7 @@ class _VerificationPageState extends State<VerificationPage> {
         if (!mounted) return;
         if (widget.token != null) {
           _provider.confirm(widget.token!);
-        } else if (_email.text.isNotEmpty) {
+        } else if (widget.delivery == null && _email.text.isNotEmpty) {
           _send();
         }
       });
@@ -58,14 +62,26 @@ class _VerificationPageState extends State<VerificationPage> {
   @override
   void didUpdateWidget(covariant VerificationPage oldWidget) {
     super.didUpdateWidget(oldWidget);
-    if (oldWidget.token == widget.token) return;
-    context.read<JourneyRecorder>().abandon(JourneyExit.navigation);
-    _provider.reset();
+    if (oldWidget.token == widget.token &&
+        oldWidget.email == widget.email &&
+        identical(oldWidget.delivery, widget.delivery)) {
+      return;
+    }
+    if (oldWidget.token != widget.token) {
+      context.read<JourneyRecorder>().abandon(JourneyExit.navigation);
+    }
+    _provider.reset(delivery: widget.delivery);
     _lastWasSend = false;
     _validated = false;
-    _email.clear();
+    _recipient = null;
+    _email.text = widget.delivery?.email ?? widget.email ?? '';
     WidgetsBinding.instance.addPostFrameCallback((_) {
-      if (mounted && widget.token != null) _provider.confirm(widget.token!);
+      if (!mounted) return;
+      if (widget.token != null) {
+        _provider.confirm(widget.token!);
+      } else if (widget.delivery == null && _email.text.isNotEmpty) {
+        _send();
+      }
     });
   }
 

frontend/app/pubspec.lock

@@ -49,6 +49,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.19.1"
+  country_picker:
+    dependency: "direct main"
+    description:
+      name: country_picker
+      sha256: "8ef721183bd7e0a6017c413693cdc68051daceef5790f5420c3b4378b5c69115"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.28"
   cross_file:
     dependency: transitive
     description:
@@ -198,7 +206,7 @@ packages:
     source: hosted
     version: "18.0.1"
   http:
-    dependency: transitive
+    dependency: "direct dev"
     description:
       name: http
       sha256: "87721a4a50b19c7f1d49001e51409bddc46303966ce89a65af4f4e6004896412"
@@ -525,6 +533,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.4.0"
+  universal_io:
+    dependency: transitive
+    description:
+      name: universal_io
+      sha256: f63cbc48103236abf48e345e07a03ce5757ea86285ed313a6a032596ed9301e2
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.1"
   vector_math:
     dependency: transitive
     description:

frontend/app/pubspec.yaml

@@ -27,10 +27,12 @@ dependencies:
   shared_preferences: ^2.5.3
   cupertino_icons: ^1.0.8
   go_router: ^18.0.1
+  country_picker: ^2.0.28
 dev_dependencies:
   flutter_test:
     sdk: flutter
   flutter_lints: ^6.0.0
+  http: ^1.6.0
 flutter:
   generate: true
   uses-material-design: true

frontend/app/test/country_test.dart

@@ -0,0 +1,176 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+
+import 'package:country_picker/country_picker.dart';
+
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:sxchnge_theme/sxchnge_theme.dart';
+
+import 'package:sxchnge_app/kyc/country.dart';
+
+import 'package:sxchnge_app/generated/i18n/app_localizations.dart';
+
+void main() {
+  final search = find.byKey(const ValueKey('country-search'));
+  final button = find.byType(OutlinedButton);
+
+  Future<void> mount(
+    WidgetTester tester,
+    ValueNotifier<String> value, {
+    Locale locale = const Locale('en'),
+    bool enabled = true,
+  }) async {
+    await tester.pumpWidget(
+      MaterialApp(
+        theme: SxchngeTheme.light(),
+        locale: locale,
+        localizationsDelegates: const [
+          ...AppLocalizations.localizationsDelegates,
+          CountryLocalizations.delegate,
+        ],
+        supportedLocales: AppLocalizations.supportedLocales,
+        home: Scaffold(
+          body: Padding(
+            padding: const EdgeInsets.all(24),
+            child: ValueListenableBuilder<String>(
+              valueListenable: value,
+              builder: (_, code, _) => CountryField(
+                value: code,
+                enabled: enabled,
+                onChanged: (code) => value.value = code,
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+  }
+
+  Future<void> open(WidgetTester tester) async {
+    await tester.tap(button);
+    await tester.pumpAndSettle();
+  }
+
+  testWidgets(
+    'name search stores code, reselection and cancel preserve value',
+    (tester) async {
+      final value = ValueNotifier('');
+      addTearDown(value.dispose);
+      await mount(tester, value);
+      expect(find.text('Select a country'), findsOneWidget);
+      await open(tester);
+      await tester.enterText(search, 'polAND');
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('Poland'));
+      await tester.pumpAndSettle();
+      expect(value.value, 'PL');
+      expect(find.text('Poland'), findsOneWidget);
+      expect(find.text('0/2'), findsNothing);
+
+      await open(tester);
+      await tester.enterText(search, '  de  ');
+      await tester.pumpAndSettle();
+      await tester.tap(find.text('Germany'));
+      await tester.pumpAndSettle();
+      expect(value.value, 'DE');
+      expect(find.text('Germany'), findsOneWidget);
+
+      await open(tester);
+      await tester.enterText(search, 'poland');
+      await tester.pumpAndSettle();
+      await tester.tap(find.byType(BackButton));
+      await tester.pumpAndSettle();
+      expect(value.value, 'DE');
+      expect(find.text('Germany'), findsOneWidget);
+    },
+  );
+
+  testWidgets('no-results state recovers through clear and Escape cancels', (
+    tester,
+  ) async {
+    final value = ValueNotifier('PL');
+    addTearDown(value.dispose);
+    await mount(tester, value);
+    await open(tester);
+    await tester.enterText(search, 'no-such-country');
+    await tester.pumpAndSettle();
+    expect(find.textContaining('No countries found'), findsOneWidget);
+    expect(find.byType(ListTile), findsNothing);
+    expect(value.value, 'PL');
+    await tester.tap(find.byTooltip('Clear search'));
+    await tester.pumpAndSettle();
+    expect(find.textContaining('No countries found'), findsNothing);
+    expect(find.byType(ListTile), findsWidgets);
+    await tester.sendKeyEvent(LogicalKeyboardKey.escape);
+    await tester.pumpAndSettle();
+    expect(search, findsNothing);
+    expect(value.value, 'PL');
+  });
+
+  testWidgets('saved code follows locale and Russian names are searchable', (
+    tester,
+  ) async {
+    final value = ValueNotifier('PL');
+    addTearDown(value.dispose);
+    await mount(tester, value);
+    expect(find.text('Poland'), findsOneWidget);
+    await mount(tester, value, locale: const Locale('ru'));
+    expect(find.text('Польша'), findsOneWidget);
+    expect(value.value, 'PL');
+    await open(tester);
+    await tester.enterText(search, 'Германия');
+    await tester.pumpAndSettle();
+    await tester.tap(find.byType(ListTile));
+    await tester.pumpAndSettle();
+    expect(value.value, 'DE');
+    expect(find.text('Германия'), findsOneWidget);
+  });
+
+  testWidgets('busy field cannot open or change selection', (tester) async {
+    final value = ValueNotifier('PL');
+    addTearDown(value.dispose);
+    await mount(tester, value, enabled: false);
+    expect(tester.widget<OutlinedButton>(button).onPressed, isNull);
+    await tester.tap(button);
+    await tester.pumpAndSettle();
+    expect(search, findsNothing);
+    expect(value.value, 'PL');
+  });
+
+  testWidgets(
+    'keyboard and labeled touch targets work at 320px with large text',
+    (tester) async {
+      tester.view.physicalSize = const Size(320, 900);
+      tester.view.devicePixelRatio = 1;
+      tester.platformDispatcher.textScaleFactorTestValue = 1.6;
+      addTearDown(tester.view.resetPhysicalSize);
+      addTearDown(tester.view.resetDevicePixelRatio);
+      addTearDown(tester.platformDispatcher.clearTextScaleFactorTestValue);
+      final semantics = tester.ensureSemantics();
+      final value = ValueNotifier('GS');
+      addTearDown(value.dispose);
+      await mount(tester, value);
+      expect(tester, meetsGuideline(labeledTapTargetGuideline));
+      expect(tester, meetsGuideline(androidTapTargetGuideline));
+      await tester.sendKeyEvent(LogicalKeyboardKey.tab);
+      await tester.sendKeyEvent(LogicalKeyboardKey.enter);
+      await tester.pumpAndSettle();
+      expect(search, findsOneWidget);
+      await tester.enterText(search, 'GS');
+      await tester.pumpAndSettle();
+      expect(tester.widget<ListTile>(find.byType(ListTile)).selected, isTrue);
+      expect(tester, meetsGuideline(labeledTapTargetGuideline));
+      expect(tester, meetsGuideline(androidTapTargetGuideline));
+      await tester.sendKeyEvent(LogicalKeyboardKey.tab);
+      await tester.sendKeyEvent(LogicalKeyboardKey.tab);
+      await tester.sendKeyEvent(LogicalKeyboardKey.enter);
+      await tester.pumpAndSettle();
+      expect(search, findsNothing);
+      expect(value.value, 'GS');
+      expect(tester.takeException(), isNull);
+      semantics.dispose();
+    },
+  );
+}

frontend/app/test/kyc_test.dart

@@ -11,6 +11,7 @@ import 'package:sxchnge_analytics/sxchnge_analytics.dart';
 
 import 'package:sxchnge_kyc/sxchnge_kyc.dart';
 
+import 'package:sxchnge_app/kyc/country.dart';
 import 'package:sxchnge_app/main.dart';
 import 'package:sxchnge_app/providers/locale.dart';
 
@@ -69,7 +70,20 @@ void main() {
     await tap(t, find.byKey(const ValueKey('kyc-start')));
     await t.enterText(find.byKey(const ValueKey('kyc-name')), 'Example Person');
     await t.enterText(find.byKey(const ValueKey('kyc-birth')), '1990-04-23');
-    await t.enterText(find.byKey(const ValueKey('kyc-country')), 'PL');
+    await tap(
+      t,
+      find.descendant(
+        of: find.byKey(const ValueKey('kyc-country')),
+        matching: find.byType(OutlinedButton),
+      ),
+    );
+    await t.enterText(find.byKey(const ValueKey('country-search')), 'PL');
+    await t.pumpAndSettle();
+    await tap(t, find.byType(ListTile));
+    expect(
+      t.widget<CountryField>(find.byKey(const ValueKey('kyc-country'))).value,
+      'PL',
+    );
     await t.pumpAndSettle();
     await tap(t, find.byKey(const ValueKey('pick-passport')));
     await tap(t, find.byKey(const ValueKey('kyc-next')));

frontend/app/test/routing_test.dart

@@ -42,6 +42,44 @@ Future<GoRouter> openRoute(
 }
 
 void main() {
+  testWidgets('queued signup receipt is transient and updates its recipient', (
+    tester,
+  ) async {
+    final router = await openRoute(tester, '/');
+    await tester.pumpAndSettle();
+    router.goNamed(
+      AppRoutes.verificationSent,
+      extra: const VerificationDelivery(
+        email: 'first@example.com',
+        isSimulated: false,
+      ),
+    );
+    await tester.pumpAndSettle();
+    expect(find.byKey(const ValueKey('verification-sent')), findsOneWidget);
+    expect(find.text('first@example.com'), findsOneWidget);
+    router.goNamed(
+      AppRoutes.verificationSent,
+      extra: const VerificationDelivery(
+        email: 'second@example.com',
+        isSimulated: false,
+      ),
+    );
+    await tester.pumpAndSettle();
+    expect(find.text('first@example.com'), findsNothing);
+    expect(find.text('second@example.com'), findsOneWidget);
+    final restored = router.routeInformationParser.restoreRouteInformation(
+      router.routerDelegate.currentConfiguration,
+    )!;
+    expect(restored.state.toString(), isNot(contains('second@example.com')));
+    expect(restored.uri.toString(), '/verification-sent');
+    router.goNamed(AppRoutes.login);
+    await tester.pumpAndSettle();
+    router.goNamed(AppRoutes.verificationSent);
+    await tester.pumpAndSettle();
+    expect(find.byKey(const ValueKey('verification-idle')), findsOneWidget);
+    expect(find.text('second@example.com'), findsNothing);
+  });
+
   for (final language in ['en', 'ru']) {
     testWidgets(
       'verified link keeps success visible and prefills login ($language)',

frontend/app/test/signup_delivery_test.dart

@@ -0,0 +1,153 @@
+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+
+import 'package:flutter_test/flutter_test.dart';
+
+import 'package:go_router/go_router.dart';
+
+import 'package:http/http.dart' as http;
+import 'package:http/testing.dart';
+
+import 'package:sxchnge_analytics/sxchnge_analytics.dart';
+
+import 'package:sxchnge_auth/sxchnge_auth.dart';
+
+import 'package:sxchnge_app/main.dart';
+import 'package:sxchnge_app/providers/locale.dart';
+
+class DeliveryBackend extends BackendAuthServices {
+  DeliveryBackend(List<String> requests)
+    : super(
+        baseUri: Uri.parse('https://api.example/api/v1'),
+        clientId: 'web',
+        client: MockClient((request) async {
+          requests.add(request.url.path);
+          return http.Response(
+            jsonEncode({
+              'data': request.url.path.endsWith('/signup')
+                  ? {'userId': 'customer'}
+                  : {'accepted': true},
+            }),
+            202,
+          );
+        }),
+      );
+
+  int sends = 0;
+  bool failResend = true;
+
+  @override
+  Future<VerificationResult> send({
+    required String email,
+    required String locale,
+  }) async {
+    sends++;
+    if (failResend) {
+      throw const VerificationException(VerificationError.internal);
+    }
+    return super.send(email: email, locale: locale);
+  }
+}
+
+void main() {
+  for (final language in ['en', 'ru']) {
+    testWidgets(
+      'accepted signup survives an unavailable resend service ($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 requests = <String>[];
+        final backend = DeliveryBackend(requests);
+        final analytics = DummyAnalyticsService();
+        await tester.pumpWidget(
+          SxchngeApp(
+            backend: backend,
+            analyticsService: analytics,
+            localeProvider: LocaleProvider(initialLocale: Locale(language)),
+          ),
+        );
+        await tester.pumpAndSettle();
+        final signup = find.text(language == 'ru' ? 'Регистрация' : 'Sign up');
+        await tester.ensureVisible(signup);
+        await tester.tap(signup);
+        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);
+        }
+        final submit = find.byKey(const ValueKey('submit'));
+        await tester.ensureVisible(submit);
+        await tester.tap(submit);
+        await tester.pumpAndSettle();
+
+        expect(find.byKey(const ValueKey('verification-sent')), findsOneWidget);
+        expect(find.text('ada@example.com'), findsOneWidget);
+        expect(backend.sends, 0);
+        expect(requests, ['/api/v1/accounts/signup']);
+        final router = GoRouter.of(tester.element(find.byType(Scaffold)));
+        final restored = router.routeInformationParser.restoreRouteInformation(
+          router.routerDelegate.currentConfiguration,
+        )!;
+        expect(restored.uri.toString(), '/verification-sent');
+        expect(restored.state.toString(), isNot(contains('ada@example.com')));
+        expect(
+          analytics.events.where(
+            (event) => event.name == 'auth_signup_succeeded',
+          ),
+          hasLength(1),
+        );
+        expect(
+          analytics.events.where(
+            (event) => event.name == 'auth_email_delivery_succeeded',
+          ),
+          hasLength(1),
+        );
+
+        final resend = find.byKey(const ValueKey('verification-resend'));
+        await tester.ensureVisible(resend);
+        await tester.tap(resend);
+        await tester.pumpAndSettle();
+        expect(
+          find.byKey(const ValueKey('verification-error')),
+          findsOneWidget,
+        );
+        expect(backend.sends, 1);
+        expect(
+          tester
+              .widget<TextFormField>(
+                find.byKey(const ValueKey('verification-email')),
+              )
+              .controller!
+              .text,
+          'ada@example.com',
+        );
+        backend.failResend = false;
+        await tester.ensureVisible(resend);
+        await tester.tap(resend);
+        await tester.pumpAndSettle();
+        expect(find.byKey(const ValueKey('verification-sent')), findsOneWidget);
+        expect(backend.sends, 2);
+        expect(requests.last, '/api/v1/accounts/verification/send');
+        expect(requests, hasLength(2));
+        expect(
+          analytics.events.map((event) => event.journeyId).toSet(),
+          hasLength(1),
+        );
+        expect(
+          analytics.events.map((event) => event.properties).toString(),
+          isNot(contains('ada@example.com')),
+        );
+        expect(tester.takeException(), isNull);
+      },
+    );
+  }
+}

frontend/packages/sxchnge_auth/lib/src/mappers/backend.dart

@@ -12,9 +12,13 @@ abstract final class BackendMapper {
     return VerificationResult(isSimulated: false, verifiedEmail: dto.email);
   }
 
-  static AuthResult signup(BackendDTO dto) {
+  static AuthResult signup(BackendDTO dto, {required String email}) {
     if (dto.userId.isEmpty) throw const FormatException('Missing user');
-    return AuthResult(userId: dto.userId, isSimulated: false);
+    return AuthResult(
+      userId: dto.userId,
+      isSimulated: false,
+      delivery: VerificationDelivery(email: email, isSimulated: false),
+    );
   }
 
   static FactorChallenge challenge(BackendDTO dto, String id) {

frontend/packages/sxchnge_auth/lib/src/mappers/results.dart

@@ -5,6 +5,12 @@ import '../models/verification.dart';
 abstract final class AuthMapper {
   static AuthResult fromDTO(AuthDTO dto) =>
       AuthResult(userId: dto.userId, isSimulated: dto.simulated);
+
+  static AuthResult signup(AuthDTO dto, {required String email}) => AuthResult(
+    userId: dto.userId,
+    isSimulated: dto.simulated,
+    delivery: VerificationDelivery(email: email, isSimulated: dto.simulated),
+  );
 }
 
 abstract final class VerificationMapper {

frontend/packages/sxchnge_auth/lib/src/models/auth.dart

@@ -1,4 +1,5 @@
 import 'two_factor.dart';
+import 'verification.dart';
 
 /// Ephemeral input: never persist, log, or include passwords in provider state.
 class LoginRequest {
@@ -31,9 +32,11 @@ class AuthResult {
     required this.userId,
     required this.isSimulated,
     this.challenge,
+    this.delivery,
   });
   final String userId;
   final FactorChallenge? challenge;
+  final VerificationDelivery? delivery;
   final bool isSimulated;
 }
 

frontend/packages/sxchnge_auth/lib/src/models/verification.dart

@@ -11,6 +11,13 @@ enum VerificationStatus {
 
 enum VerificationError { expired, invalid, internal, needsAssistance }
 
+/// An accepted email-queue operation, not proof of inbox delivery or activation.
+class VerificationDelivery {
+  const VerificationDelivery({required this.email, required this.isSimulated});
+  final String email;
+  final bool isSimulated;
+}
+
 class VerificationException implements Exception {
   const VerificationException(this.code);
   final VerificationError code;

frontend/packages/sxchnge_auth/lib/src/providers/verification.dart

@@ -4,13 +4,22 @@ import '../models/verification.dart';
 import '../services/verification.dart';
 
 class VerificationProvider extends ChangeNotifier {
-  VerificationProvider(this.service);
+  VerificationProvider(this.service, {VerificationDelivery? delivery})
+    : _state = _initialState(delivery);
   final VerificationService service;
-  VerificationState _state = const VerificationState(VerificationStatus.idle);
+  VerificationState _state;
   VerificationState get state => _state;
   bool _disposed = false;
   int _generation = 0;
 
+  static VerificationState _initialState(VerificationDelivery? delivery) =>
+      delivery == null
+      ? const VerificationState(VerificationStatus.idle)
+      : VerificationState(
+          VerificationStatus.sent,
+          isSimulated: delivery.isSimulated,
+        );
+
   Future<void> send({required String email, required String locale}) => _run(
     () => service.send(email: email.trim(), locale: locale),
     VerificationStatus.sending,
@@ -61,10 +70,10 @@ class VerificationProvider extends ChangeNotifier {
     notifyListeners();
   }
 
-  void reset() {
+  void reset({VerificationDelivery? delivery}) {
     if (_disposed) return;
     ++_generation;
-    _state = const VerificationState(VerificationStatus.idle);
+    _state = _initialState(delivery);
     notifyListeners();
   }
 

frontend/packages/sxchnge_auth/lib/src/services/backend.dart

@@ -51,7 +51,6 @@ class BackendAuthServices
   final _pending = <String, ({String token, String challengeId})>{};
   final _grants = <String, AuthSession>{};
   final _retryKeys = <String, String>{};
-  String? _queuedSignup;
   AuthSession? _session;
   AuthSession? get session => _session;
   @override
@@ -113,9 +112,8 @@ class BackendAuthServices
       'locale': r.locale,
       'idempotencyKey': key,
     });
-    final result = BackendMapper.signup(dto);
+    final result = BackendMapper.signup(dto, email: email);
     _retryKeys.remove('signup:$email');
-    _queuedSignup = email;
     return result;
   }
 
@@ -141,14 +139,6 @@ class BackendAuthServices
     required String locale,
   }) async {
     final normalized = email.trim().toLowerCase();
-    // Signup already queued this email. The existing confirmation page requests
-    // its initial delivery on mount; consume that receipt once.
-    if (_queuedSignup == normalized) {
-      _queuedSignup = null;
-      return VerificationMapper.fromDTO(
-        const VerificationDTO(simulated: false),
-      );
-    }
     final key = _retryKeys.putIfAbsent('activation:$normalized', _key);
     try {
       await _post('verification/send', {

frontend/packages/sxchnge_auth/lib/src/services/dummy.dart

@@ -40,8 +40,9 @@ class DummySignupService implements SignupService, SimulationInfo {
   Future<AuthResult> signup(SignupRequest request) async {
     await Future<void>.delayed(delay);
     if (failure case final error?) throw AuthException(error);
-    return AuthMapper.fromDTO(
+    return AuthMapper.signup(
       const AuthDTO(userId: 'demo-user', simulated: true),
+      email: request.email.trim(),
     );
   }
 }

frontend/packages/sxchnge_auth/lib/src/services/instrumented.dart

@@ -111,13 +111,27 @@ class InstrumentedAuthServices
     simulation: _simulation(loginService),
   );
   @override
-  Future<AuthResult> signup(SignupRequest request) => _run(
-    JourneyKind.signup,
-    JourneyStep.signup,
-    () => signupService.signup(request),
-    (r) => r.isSimulated,
-    simulation: _simulation(signupService),
-  );
+  Future<AuthResult> signup(SignupRequest request) async {
+    final result = await _run(
+      JourneyKind.signup,
+      JourneyStep.signup,
+      () => signupService.signup(request),
+      (r) => r.isSimulated,
+      simulation: _simulation(signupService),
+    );
+    final delivery = result.delivery;
+    if (delivery != null) {
+      final operation = recorder.begin(
+        JourneyKind.verification,
+        JourneyStep.emailDelivery,
+        onboarding: true,
+        simulated: delivery.isSimulated,
+      );
+      recorder.finish(operation, simulated: delivery.isSimulated);
+    }
+    return result;
+  }
+
   @override
   Future<VerificationResult> send({
     required String email,

frontend/packages/sxchnge_auth/test/auth_test.dart

@@ -142,11 +142,11 @@ void main() {
           .isSimulated,
       isTrue,
     );
-    expect(
-      (await const DummySignupService(delay: Duration.zero).signup(signup))
-          .isSimulated,
-      isTrue,
-    );
+    final accepted = await const DummySignupService(delay: Duration.zero)
+        .signup(signup);
+    expect(accepted.isSimulated, isTrue);
+    expect(accepted.delivery?.email, 'a@example.com');
+    expect(accepted.delivery?.isSimulated, isTrue);
     await expectLater(
       const DummyLoginService(
         delay: Duration.zero,

frontend/packages/sxchnge_auth/test/backend_test.dart

@@ -89,35 +89,48 @@ void main() {
       expect(keys[0], keys[1]);
     },
   );
-  test('signup receipt avoids duplicate delivery and subsequent resend reaches API', () async {
-    final paths = <String>[];
-    final service = BackendAuthServices(
-      baseUri: Uri.parse('https://api.example/api/v1'),
-      clientId: 'web',
-      client: MockClient((request) async {
-        paths.add(request.url.path);
-        if (request.url.path.endsWith('/signup')) {
-          expect(jsonDecode(request.body)['password'], ' password preserved ');
-          return response({'userId': 'user'});
-        }
-        return response({'accepted': true});
-      }),
-    );
-    addTearDown(service.close);
-    final result = await service.signup(
-      const SignupRequest(
-        name: 'User',
-        email: 'USER@example.com',
-        password: ' password preserved ',
-        locale: 'en',
-      ),
-    );
-    expect(result.isSimulated, isFalse);
-    await service.send(email: 'user@example.com', locale: 'en');
-    expect(paths, ['/api/v1/accounts/signup']);
-    await service.send(email: 'user@example.com', locale: 'en');
-    expect(paths.last, '/api/v1/accounts/verification/send');
-  });
+  test(
+    'signup returns its receipt and every explicit resend reaches API',
+    () async {
+      final paths = <String>[];
+      final service = BackendAuthServices(
+        baseUri: Uri.parse('https://api.example/api/v1'),
+        clientId: 'web',
+        client: MockClient((request) async {
+          paths.add(request.url.path);
+          if (request.url.path.endsWith('/signup')) {
+            expect(
+              jsonDecode(request.body)['password'],
+              ' password preserved ',
+            );
+            return response({'userId': 'user'});
+          }
+          return response({'accepted': true});
+        }),
+      );
+      addTearDown(service.close);
+      final result = await service.signup(
+        const SignupRequest(
+          name: 'User',
+          email: 'USER@example.com',
+          password: ' password preserved ',
+          locale: 'en',
+        ),
+      );
+      expect(result.isSimulated, isFalse);
+      expect(result.delivery?.email, 'user@example.com');
+      expect(result.delivery?.isSimulated, isFalse);
+      expect(paths, ['/api/v1/accounts/signup']);
+      await service.send(email: 'user@example.com', locale: 'en');
+      expect(paths, [
+        '/api/v1/accounts/signup',
+        '/api/v1/accounts/verification/send',
+      ]);
+      await service.send(email: 'user@example.com', locale: 'en');
+      expect(paths.last, '/api/v1/accounts/verification/send');
+      expect(paths, hasLength(3));
+    },
+  );
   test('login confirms backend session only after factor and consumes local grant once', () async {
     final now = DateTime.now();
     var verified = false;

frontend/packages/sxchnge_auth/test/verification_test.dart

@@ -28,6 +28,36 @@ class PendingService implements VerificationService {
 }
 
 void main() {
+  test(
+    'accepted delivery initializes sent state without calling the service',
+    () async {
+      final service = PendingService();
+      final provider = VerificationProvider(
+        service,
+        delivery: const VerificationDelivery(
+          email: 'ada@example.com',
+          isSimulated: false,
+        ),
+      );
+      addTearDown(provider.dispose);
+      expect(provider.state.status, VerificationStatus.sent);
+      expect(provider.state.isSimulated, isFalse);
+      expect(provider.state.result, isNull);
+      expect(service.calls, 0);
+      final resend = provider.send(email: 'ada@example.com', locale: 'en');
+      expect(provider.state.status, VerificationStatus.sending);
+      expect(service.calls, 1);
+      service.pending.completeError(
+        const VerificationException(VerificationError.internal),
+      );
+      await resend;
+      expect(provider.state.status, VerificationStatus.error);
+      expect(provider.state.result, isNull);
+      provider.reset();
+      expect(provider.state.status, VerificationStatus.idle);
+    },
+  );
+
   for (final scenario in {
     'demo-valid': VerificationStatus.verified,
     'demo-expired': VerificationStatus.expired,