diff --git a/app/assets/security/README.md b/app/assets/security/README.md
index b0510a9..ad8625b 100644
--- a/app/assets/security/README.md
+++ b/app/assets/security/README.md
@@ -23,13 +23,18 @@ Commit `68bcd12457978649d41ae4f56e3b5d2db2b72560`, Verzeichnis
 | `Language-Specific/German_common-password-list-top-100000.txt` | die ersten 4.000 Einträge mit mindestens 10 Zeichen |
 | `xato-net-10-million-passwords-1000000.txt` | die ersten 6.000 weiteren Einträge mit mindestens 10 Zeichen |
 
-**Offene Lizenzfrage:** Die MIT-Lizenz gilt für das SecLists-Repository. Die
-einzelnen Listen stammen aus Datenlecks bzw. Sammlungen Dritter (die xato-Liste
-von Mark Burnett); eine eigene Lizenz je Liste nennt SecLists nicht. Die Spec
-(§ 5.6) nennt SecLists (MIT) als Kandidaten. Die abschließende Freigabe liegt
-bei Chris. Die Liste enthält ausschließlich Passwörter, keine Konten oder
+**Lizenzfrage entschieden (Chris, 2026-11-03):** Die MIT-Lizenz gilt für das
+SecLists-Repository. Die einzelnen Listen stammen aus Datenlecks bzw.
+Sammlungen Dritter (die xato-Liste von Mark Burnett); eine eigene Lizenz je
+Liste nennt SecLists nicht. Chris hat entschieden, die SecLists-Listen mit
+dokumentierter Herkunft (diese Datei) und MIT-Lizenztext (`app/THIRD_PARTY.md`)
+zu nutzen. Die Liste enthält ausschließlich Passwörter, keine Konten oder
 E-Mail-Adressen.
 
+Der Lizenztext wird zur Laufzeit über `LicenseRegistry` ausgeliefert
+(`lib/core/licenses/third_party_licenses.dart`, Asset `THIRD_PARTY.md`) und
+erscheint damit in `showLicensePage`.
+
 ## Neu erzeugen
 
 ```bash
diff --git a/app/lib/core/licenses/third_party_licenses.dart b/app/lib/core/licenses/third_party_licenses.dart
new file mode 100644
index 0000000..6ad7d2e
--- /dev/null
+++ b/app/lib/core/licenses/third_party_licenses.dart
@@ -0,0 +1,18 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
+
+/// Asset with the license texts of bundled third-party material.
+const thirdPartyAsset = 'THIRD_PARTY.md';
+
+/// Package name under which the entry appears in `showLicensePage`.
+const thirdPartyLicensePackage = 'SecLists (common passwords list)';
+
+/// Registers the license text of the bundled password list (SecLists, MIT) in
+/// the [LicenseRegistry], so that it shows up in `showLicensePage`. The text
+/// is read lazily from [thirdPartyAsset] when the license page opens.
+void registerThirdPartyLicenses({AssetBundle? bundle}) {
+  LicenseRegistry.addLicense(() async* {
+    final text = await (bundle ?? rootBundle).loadString(thirdPartyAsset);
+    yield LicenseEntryWithLineBreaks([thirdPartyLicensePackage], text);
+  });
+}
diff --git a/app/lib/core/platform/io_error.dart b/app/lib/core/platform/io_error.dart
new file mode 100644
index 0000000..75489ca
--- /dev/null
+++ b/app/lib/core/platform/io_error.dart
@@ -0,0 +1,6 @@
+library;
+
+/// Detects `dart:io` network errors without importing `dart:io` on the web
+/// (conditional import). Type checks with `is` keep working in minified
+/// dart2js builds, unlike `runtimeType.toString()`.
+export 'io_error_stub.dart' if (dart.library.io) 'io_error_io.dart';
diff --git a/app/lib/core/platform/io_error_io.dart b/app/lib/core/platform/io_error_io.dart
new file mode 100644
index 0000000..6787046
--- /dev/null
+++ b/app/lib/core/platform/io_error_io.dart
@@ -0,0 +1,7 @@
+import 'dart:io';
+
+/// Network errors of `dart:io` (no connection, DNS, TLS handshake).
+bool isIoNetworkError(Object error) =>
+    error is SocketException ||
+    error is HandshakeException ||
+    error is TlsException;
diff --git a/app/lib/core/platform/io_error_stub.dart b/app/lib/core/platform/io_error_stub.dart
new file mode 100644
index 0000000..03d657e
--- /dev/null
+++ b/app/lib/core/platform/io_error_stub.dart
@@ -0,0 +1,2 @@
+/// Web and other platforms without `dart:io`: no `dart:io` network errors.
+bool isIoNetworkError(Object error) => false;
diff --git a/app/lib/core/platform/url_opener.dart b/app/lib/core/platform/url_opener.dart
index ac94a4b..aecef0a 100644
--- a/app/lib/core/platform/url_opener.dart
+++ b/app/lib/core/platform/url_opener.dart
@@ -9,13 +9,30 @@ typedef UrlOpener = Future<bool> Function(Uri uri);
 
 final _log = AppLogger('UrlOpener');
 
+/// Only `http`/`https` URLs with a host may leave the app (no `javascript:`,
+/// `file:`, `intent:` and the like). The check lives here so that no caller
+/// can forget it.
+bool isOpenableExternalUrl(Uri uri) =>
+    (uri.scheme == 'http' || uri.scheme == 'https') && uri.host.isNotEmpty;
+
+/// Wraps [launch] with the scheme check of [isOpenableExternalUrl] and error
+/// handling. Public for tests.
+UrlOpener guardedUrlOpener(Future<bool> Function(Uri uri) launch) =>
+    (uri) async {
+      if (!isOpenableExternalUrl(uri)) {
+        _log.warning('refused to open url with scheme "${uri.scheme}"');
+        return false;
+      }
+      try {
+        return await launch(uri);
+      } on Object catch (error) {
+        _log.warning('launchUrl failed: ${error.runtimeType}');
+        return false;
+      }
+    };
+
 /// The only place that touches `url_launcher`. Tests override this provider.
 @Riverpod(keepAlive: true)
-UrlOpener urlOpener(Ref ref) => (uri) async {
-  try {
-    return await launchUrl(uri, mode: LaunchMode.externalApplication);
-  } on Object catch (error) {
-    _log.warning('launchUrl failed: ${error.runtimeType}');
-    return false;
-  }
-};
+UrlOpener urlOpener(Ref ref) => guardedUrlOpener(
+  (uri) => launchUrl(uri, mode: LaunchMode.externalApplication),
+);
diff --git a/app/lib/core/platform/url_opener.g.dart b/app/lib/core/platform/url_opener.g.dart
index 061a48e..d4a4f55 100644
--- a/app/lib/core/platform/url_opener.g.dart
+++ b/app/lib/core/platform/url_opener.g.dart
@@ -52,4 +52,4 @@ final class UrlOpenerProvider
   }
 }
 
-String _$urlOpenerHash() => r'f5f1e650e073776595fac2981548a91f815c66ca';
+String _$urlOpenerHash() => r'e86eb081c587907d3c162ed619b42abbbfb195a5';
diff --git a/app/lib/core/routing/app_router.dart b/app/lib/core/routing/app_router.dart
index 44348ba..1d279ed 100644
--- a/app/lib/core/routing/app_router.dart
+++ b/app/lib/core/routing/app_router.dart
@@ -3,6 +3,7 @@ import 'package:riverpod_annotation/riverpod_annotation.dart';
 import 'package:shuffle/core/routing/app_routes.dart';
 import 'package:shuffle/core/routing/not_found_screen.dart';
 import 'package:shuffle/core/routing/redirect_source.dart';
+import 'package:shuffle/core/routing/volatile_extra_codec.dart';
 import 'package:shuffle/features/auth/presentation/auth_routes.dart';
 import 'package:shuffle/features/home/presentation/home_screen.dart';
 
@@ -14,6 +15,7 @@ GoRouter appRouter(Ref ref) {
 
   final router = GoRouter(
     initialLocation: AppRoutes.home,
+    extraCodec: const VolatileExtraCodec(),
     refreshListenable: source.changes,
     redirect: (context, state) => source.redirect(state),
     errorBuilder: (context, state) => const NotFoundScreen(),
diff --git a/app/lib/core/routing/app_router.g.dart b/app/lib/core/routing/app_router.g.dart
index bb8230a..34d5139 100644
--- a/app/lib/core/routing/app_router.g.dart
+++ b/app/lib/core/routing/app_router.g.dart
@@ -48,4 +48,4 @@ final class AppRouterProvider
   }
 }
 
-String _$appRouterHash() => r'f4f391f8abc008f4a7b1a88149822bda24f42137';
+String _$appRouterHash() => r'39ea53d71fba02f9e9cc5e42df61144e55eca3d9';
diff --git a/app/lib/core/routing/volatile_extra_codec.dart b/app/lib/core/routing/volatile_extra_codec.dart
new file mode 100644
index 0000000..7169a38
--- /dev/null
+++ b/app/lib/core/routing/volatile_extra_codec.dart
@@ -0,0 +1,26 @@
+import 'dart:convert';
+
+/// `extraCodec` for go_router that does not persist `extra`.
+///
+/// go_router 18 JSON-encodes `extra` into the route information, and on the
+/// web into the browser history state (`RouteMatchListCodec`,
+/// `match.dart`). Data that must not outlive the page (here: the e-mail
+/// address on "check your inbox") would stay in the history entry. With this
+/// codec `extra` works in memory during navigation, but is dropped when the
+/// state is serialized (reload, restoring from history).
+class VolatileExtraCodec extends Codec<Object?, Object?> {
+  const VolatileExtraCodec();
+
+  @override
+  Converter<Object?, Object?> get encoder => const _DropConverter();
+
+  @override
+  Converter<Object?, Object?> get decoder => const _DropConverter();
+}
+
+class _DropConverter extends Converter<Object?, Object?> {
+  const _DropConverter();
+
+  @override
+  Object? convert(Object? input) => null;
+}
diff --git a/app/lib/core/widgets/app_checkbox_field.dart b/app/lib/core/widgets/app_checkbox_field.dart
index a68b03f..3a0861d 100644
--- a/app/lib/core/widgets/app_checkbox_field.dart
+++ b/app/lib/core/widgets/app_checkbox_field.dart
@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:flutter/semantics.dart';
 import 'package:shuffle/core/theme/app_spacing.dart';
 import 'package:shuffle/core/widgets/app_field_error.dart';
 
@@ -8,8 +7,8 @@ import 'package:shuffle/core/widgets/app_field_error.dart';
 class AppLabelSegment {
   const AppLabelSegment.text(this.text) : onTap = null;
 
-  /// A link. It is focusable via keyboard and exposed to screen readers as a
-  /// custom action named [text].
+  /// A link. It is focusable via keyboard and exposed to screen readers as its
+  /// own semantics node (`link: true`) with [text] as label.
   const AppLabelSegment.link(this.text, this.onTap);
 
   final String text;
@@ -60,11 +59,8 @@ class AppCheckboxField extends StatelessWidget {
       decorationColor: theme.colorScheme.primary,
     );
 
+    final hasLinks = segments.any((s) => s.isLink);
     final plainLabel = segments.map((s) => s.text).join();
-    final linkActions = <CustomSemanticsAction, VoidCallback>{
-      for (final s in segments.where((s) => s.isLink))
-        CustomSemanticsAction(label: s.text): s.onTap!,
-    };
 
     final label = Text.rich(
       TextSpan(
@@ -82,7 +78,9 @@ class AppCheckboxField extends StatelessWidget {
                 ),
               )
             else
-              TextSpan(text: s.text),
+              // With links the text stays in the semantics tree (the links are its
+              // children) but is read via the checkbox label, not twice.
+              TextSpan(text: s.text, semanticsLabel: hasLinks ? '' : null),
         ],
       ),
     );
@@ -94,40 +92,40 @@ class AppCheckboxField extends StatelessWidget {
         Semantics(
           container: true,
           checked: value,
-          enabled: interactive,
           label: plainLabel,
+          enabled: interactive,
           onTap: interactive ? () => onChanged!(!value) : null,
-          customSemanticsActions: linkActions,
-          child: ExcludeSemantics(
-            child: InkWell(
-              canRequestFocus: false,
-              borderRadius: AppRadius.smAll,
-              onTap: interactive ? () => onChanged!(!value) : null,
-              child: ConstrainedBox(
-                constraints: const BoxConstraints(
-                  minHeight: AppSpacing.minTouchTarget,
-                ),
-                child: Row(
-                  crossAxisAlignment: CrossAxisAlignment.center,
-                  children: [
-                    Checkbox(
+          child: InkWell(
+            canRequestFocus: false,
+            excludeFromSemantics: true,
+            borderRadius: AppRadius.smAll,
+            onTap: interactive ? () => onChanged!(!value) : null,
+            child: ConstrainedBox(
+              constraints: const BoxConstraints(
+                minHeight: AppSpacing.minTouchTarget,
+              ),
+              child: Row(
+                crossAxisAlignment: CrossAxisAlignment.center,
+                children: [
+                  ExcludeSemantics(
+                    child: Checkbox(
                       value: value,
                       isError: hasError,
                       onChanged: interactive
                           ? (v) => onChanged!(v ?? false)
                           : null,
                     ),
-                    const SizedBox(width: AppSpacing.xs),
-                    Expanded(
-                      child: Padding(
-                        padding: const EdgeInsets.symmetric(
-                          vertical: AppSpacing.sm,
-                        ),
-                        child: label,
+                  ),
+                  const SizedBox(width: AppSpacing.xs),
+                  Expanded(
+                    child: Padding(
+                      padding: const EdgeInsets.symmetric(
+                        vertical: AppSpacing.sm,
                       ),
+                      child: label,
                     ),
-                  ],
-                ),
+                  ),
+                ],
               ),
             ),
           ),
@@ -158,11 +156,21 @@ class _InlineLink extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return InkWell(
+    // Own semantics node (`link: true`), so that screen readers reach the
+    // link on the web, too (custom actions are not mapped to ARIA there).
+    return Semantics(
+      container: true,
+      link: true,
+      label: text,
       onTap: onTap,
-      borderRadius: BorderRadius.circular(AppRadius.sm / 2),
-      focusColor: Theme.of(context).colorScheme.primary.withValues(alpha: 0.2),
-      child: Text(text, style: style),
+      excludeSemantics: true,
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(AppRadius.sm / 2),
+        focusColor: Theme.of(context).colorScheme.primary
+            .withValues(alpha: 0.2),
+        child: Text(text, style: style),
+      ),
     );
   }
 }
diff --git a/app/lib/core/widgets/app_field_error.dart b/app/lib/core/widgets/app_field_error.dart
index 506c945..95c3b61 100644
--- a/app/lib/core/widgets/app_field_error.dart
+++ b/app/lib/core/widgets/app_field_error.dart
@@ -5,10 +5,16 @@ import 'package:shuffle/core/theme/app_spacing.dart';
 ///
 /// Information is never conveyed by color alone: icon + text. The text is a
 /// polite live region, so screen readers announce it when it appears.
+///
+/// With [live] set to `false` the message stays visible and readable but is
+/// not announced on its own. Use it for messages that change on every
+/// keystroke (e.g. "n characters missing") and switch to `true` when the
+/// field is left.
 class AppFieldError extends StatelessWidget {
-  const AppFieldError(this.text, {super.key});
+  const AppFieldError(this.text, {super.key, this.live = true});
 
   final String text;
+  final bool live;
 
   @override
   Widget build(BuildContext context) {
@@ -16,7 +22,7 @@ class AppFieldError extends StatelessWidget {
     final color = theme.colorScheme.error;
     return Semantics(
       container: true,
-      liveRegion: true,
+      liveRegion: live,
       child: Row(
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
diff --git a/app/lib/core/widgets/app_password_field.dart b/app/lib/core/widgets/app_password_field.dart
index c5c6377..4e68505 100644
--- a/app/lib/core/widgets/app_password_field.dart
+++ b/app/lib/core/widgets/app_password_field.dart
@@ -17,6 +17,7 @@ class AppPasswordField extends StatefulWidget {
     this.focusNode,
     this.ruleHint,
     this.errorText,
+    this.liveError = true,
     this.isNewPassword = false,
     this.autofillHints,
     this.textInputAction,
@@ -35,6 +36,9 @@ class AppPasswordField extends StatefulWidget {
   /// Rule hint (e.g. "at least 10 characters"), shown while there is no error.
   final String? ruleHint;
   final String? errorText;
+
+  /// See [AppTextField.liveError].
+  final bool liveError;
   final bool isNewPassword;
 
   /// Overrides the default hints (`password` / `newPassword`).
@@ -60,6 +64,7 @@ class _AppPasswordFieldState extends State<AppPasswordField> {
       focusNode: widget.focusNode,
       helperText: widget.ruleHint,
       errorText: widget.errorText,
+      liveError: widget.liveError,
       obscureText: _obscured,
       autocorrect: false,
       enableSuggestions: false,
diff --git a/app/lib/core/widgets/app_text_field.dart b/app/lib/core/widgets/app_text_field.dart
index 701e0ca..18d8898 100644
--- a/app/lib/core/widgets/app_text_field.dart
+++ b/app/lib/core/widgets/app_text_field.dart
@@ -17,6 +17,7 @@ class AppTextField extends StatelessWidget {
     this.focusNode,
     this.helperText,
     this.errorText,
+    this.liveError = true,
     this.keyboardType,
     this.textInputAction,
     this.autofillHints,
@@ -41,6 +42,10 @@ class AppTextField extends StatelessWidget {
   final FocusNode? focusNode;
   final String? helperText;
   final String? errorText;
+
+  /// Whether [errorText] is announced as a live region. Set to `false` while
+  /// the user is typing and the message changes with every keystroke.
+  final bool liveError;
   final TextInputType? keyboardType;
   final TextInputAction? textInputAction;
   final Iterable<String>? autofillHints;
@@ -122,7 +127,9 @@ class AppTextField extends StatelessWidget {
             decoration: InputDecoration(
               suffixIcon: suffixIcon,
               counterText: showCounter ? counterText : null,
-              error: hasError ? AppFieldError(errorText!) : null,
+              error: hasError
+                  ? AppFieldError(errorText!, live: liveError)
+                  : null,
               helper: !hasError && helper != null && helper.isNotEmpty
                   ? Text(
                       helper,
diff --git a/app/lib/features/auth/data/auth_failure_mapper.dart b/app/lib/features/auth/data/auth_failure_mapper.dart
index 825337a..6b2398b 100644
--- a/app/lib/features/auth/data/auth_failure_mapper.dart
+++ b/app/lib/features/auth/data/auth_failure_mapper.dart
@@ -1,5 +1,7 @@
 import 'dart:async';
 
+import 'package:http/http.dart' as http;
+import 'package:shuffle/core/platform/io_error.dart';
 import 'package:shuffle/features/auth/domain/auth_failure.dart';
 import 'package:supabase_flutter/supabase_flutter.dart';
 
@@ -108,13 +110,9 @@ RegistrationRejectionReason registrationRejectionReasonFrom(String message) {
   return RegistrationRejectionReason.unknown;
 }
 
-/// Rohe Transportfehler (`SocketException`, `ClientException`, …). `dart:io`
-/// und `package:http` werden bewusst nicht importiert (Web-Build, Lint);
-/// `gotrue` verpackt Transportfehler normalerweise schon selbst.
-bool _isTransportError(Object error) => switch (error.runtimeType.toString()) {
-  'SocketException' ||
-  'ClientException' ||
-  'HandshakeException' ||
-  'TlsException' => true,
-  _ => false,
-};
+/// Rohe Transportfehler. `gotrue` verpackt Transportfehler normalerweise
+/// schon selbst; das hier ist die Rückfallebene. Erkennung per `is`
+/// (`ClientException` aus `package:http`, `dart:io`-Fehler über bedingten
+/// Import), nicht über `runtimeType`: Das bricht in minifiziertem dart2js.
+bool _isTransportError(Object error) =>
+    error is http.ClientException || isIoNetworkError(error);
diff --git a/app/lib/features/auth/presentation/auth_routes.dart b/app/lib/features/auth/presentation/auth_routes.dart
index 8a0752e..bee11e0 100644
--- a/app/lib/features/auth/presentation/auth_routes.dart
+++ b/app/lib/features/auth/presentation/auth_routes.dart
@@ -16,8 +16,10 @@ final List<RouteBase> authRoutes = [
       GoRoute(
         path: 'check-email',
         builder: (context, state) {
-          // The address travels as `extra`, never in the URL. After a web
-          // reload it is gone; the screen then asks for it.
+          // The address travels as `extra`, never in the URL. go_router would
+          // persist `extra` in the browser history; the router's
+          // `VolatileExtraCodec` prevents that. After a web reload it is gone;
+          // the screen then asks for it.
           final extra = state.extra;
           return CheckEmailScreen(email: extra is String ? extra : null);
         },
diff --git a/app/lib/features/auth/presentation/providers/auth_redirect.dart b/app/lib/features/auth/presentation/providers/auth_redirect.dart
index 165290e..e318d83 100644
--- a/app/lib/features/auth/presentation/providers/auth_redirect.dart
+++ b/app/lib/features/auth/presentation/providers/auth_redirect.dart
@@ -73,8 +73,13 @@ String? safeFromPath(String? from) {
   if (uri == null || uri.hasScheme || uri.hasAuthority) {
     return null;
   }
-  if (_neverFromPaths.contains(uri.path) ||
-      uri.path.startsWith(AppRoutes.authConfirm)) {
+  // `/login/` is the same page as `/login` (go_router ignores the trailing
+  // slash), so it is not allowed either.
+  final path = uri.path.length > 1
+      ? uri.path.replaceFirst(RegExp(r'/+$'), '')
+      : uri.path;
+  if (_neverFromPaths.contains(path) ||
+      path.startsWith(AppRoutes.authConfirm)) {
     return null;
   }
   return from;
diff --git a/app/lib/features/auth/presentation/register/register_controller.dart b/app/lib/features/auth/presentation/register/register_controller.dart
index eac8bce..3e75b6d 100644
--- a/app/lib/features/auth/presentation/register/register_controller.dart
+++ b/app/lib/features/auth/presentation/register/register_controller.dart
@@ -85,6 +85,9 @@ class RegisterController extends _$RegisterController {
     if (state.isSubmitting) {
       return false;
     }
+    // Set before the first await, otherwise a second trigger (button and
+    // Enter key) passes the guard while the list is still loading.
+    state = state.copyWith(status: RegisterStatus.submitting);
     await loadCommonPasswords();
     if (!ref.mounted) {
       return false;
@@ -100,13 +103,13 @@ class RegisterController extends _$RegisterController {
     final invalid = state.firstInvalidField;
     if (invalid != null) {
       state = state.copyWith(
+        status: RegisterStatus.editing,
         focusField: invalid,
         focusRequest: state.focusRequest + 1,
       );
       return false;
     }
 
-    state = state.copyWith(status: RegisterStatus.submitting);
     final input = ref.read(registrationInputFactoryProvider)(
       email: EmailFormat.normalize(state.email),
       password: state.password,
@@ -155,7 +158,7 @@ class RegisterController extends _$RegisterController {
       LegalDocument.terms => config.legalTermsUrl,
     };
     final uri = Uri.tryParse(url);
-    if (uri == null || !uri.hasScheme) {
+    if (uri == null || !isOpenableExternalUrl(uri)) {
       _log.warning('invalid legal url for ${document.name}');
       return false;
     }
diff --git a/app/lib/features/auth/presentation/register/register_controller.g.dart b/app/lib/features/auth/presentation/register/register_controller.g.dart
index 07fe2a4..5a223cb 100644
--- a/app/lib/features/auth/presentation/register/register_controller.g.dart
+++ b/app/lib/features/auth/presentation/register/register_controller.g.dart
@@ -45,7 +45,7 @@ final class RegisterControllerProvider
 }
 
 String _$registerControllerHash() =>
-    r'25930050b4b5fbaff535c3a09abe4ca15c860759';
+    r'78a2a99ae36292286f26aff1f9910504bc464636';
 
 /// Logic of the registration form (KTO-01 Kriterien 1 bis 4 und 10).
 
diff --git a/app/lib/features/auth/presentation/register/register_screen.dart b/app/lib/features/auth/presentation/register/register_screen.dart
index dd93095..6b36515 100644
--- a/app/lib/features/auth/presentation/register/register_screen.dart
+++ b/app/lib/features/auth/presentation/register/register_screen.dart
@@ -40,6 +40,9 @@ class _RegisterScreenState extends ConsumerState<RegisterScreen> {
   final _passwordFocus = FocusNode();
   final _displayNameFocus = FocusNode();
 
+  /// The user is typing in the password field (see `liveError` below).
+  bool _passwordTyping = false;
+
   @override
   void initState() {
     super.initState();
@@ -54,6 +57,10 @@ class _RegisterScreenState extends ConsumerState<RegisterScreen> {
         );
       }
       _onFocusChange(_passwordFocus, RegisterField.password);
+      if (!_passwordFocus.hasFocus && _passwordTyping && mounted) {
+        // Field left: the length hint may be announced now.
+        setState(() => _passwordTyping = false);
+      }
     });
     _displayNameFocus.addListener(
       () => _onFocusChange(_displayNameFocus, RegisterField.displayName),
@@ -167,7 +174,15 @@ class _RegisterScreenState extends ConsumerState<RegisterScreen> {
               enabled: !busy,
               ruleHint: l10n.authPasswordRule,
               errorText: _passwordError(l10n, state),
-              onChanged: controller.passwordChanged,
+              // "n missing" changes with every keystroke: announce it only
+              // when the field is left. The visible hint stays.
+              liveError: !_passwordTyping || !_isLengthHintOnly(state),
+              onChanged: (value) {
+                if (!_passwordTyping) {
+                  setState(() => _passwordTyping = true);
+                }
+                controller.passwordChanged(value);
+              },
             ),
             const SizedBox(height: AppSpacing.lg),
             AppTextField(
@@ -258,6 +273,13 @@ class _RegisterScreenState extends ConsumerState<RegisterScreen> {
     return null;
   }
 
+  /// The only password message shown is the "n missing" count (no server
+  /// answer, not "required").
+  bool _isLengthHintOnly(RegisterState state) =>
+      state.serverPasswordReasons == null &&
+      !state.shownPasswordRequired &&
+      state.shownPasswordError is PasswordTooShort;
+
   String? _passwordError(AppLocalizations l10n, RegisterState state) {
     if (state.serverPasswordReasons case final reasons?) {
       return weakPasswordMessage(l10n, reasons);
diff --git a/app/lib/l10n/app_de.arb b/app/lib/l10n/app_de.arb
index 5b12c86..1997a07 100644
--- a/app/lib/l10n/app_de.arb
+++ b/app/lib/l10n/app_de.arb
@@ -20,7 +20,7 @@
   "authErrorNetwork": "Keine Verbindung. Für diesen Schritt brauchst du Internet.",
   "authErrorUnexpected": "Etwas ist schiefgelaufen. Bitte versuche es erneut.",
   "authActionRetry": "Erneut versuchen",
-  "authPasswordTooShort": "Mindestens 10 Zeichen – es fehlen noch {missing}.",
+  "authPasswordTooShort": "Mindestens 10 Zeichen – {missing, plural, =1{es fehlt noch 1 Zeichen} other{es fehlen noch {missing} Zeichen}}.",
   "authPasswordCommon": "Dieses Passwort ist sehr verbreitet und leicht zu erraten. Wähle ein anderes.",
   "authPasswordRule": "Mindestens 10 Zeichen. Kein sehr verbreitetes Passwort.",
   "authPasswordRequired": "Gib ein Passwort ein.",
diff --git a/app/lib/l10n/app_en.arb b/app/lib/l10n/app_en.arb
index b374bac..0dfc746 100644
--- a/app/lib/l10n/app_en.arb
+++ b/app/lib/l10n/app_en.arb
@@ -35,7 +35,7 @@
   "authErrorNetwork": "No connection. You need internet access for this step.",
   "authErrorUnexpected": "Something went wrong. Please try again.",
   "authActionRetry": "Try again",
-  "authPasswordTooShort": "At least 10 characters – {missing} more needed.",
+  "authPasswordTooShort": "At least 10 characters – {missing, plural, =1{1 more character needed} other{{missing} more characters needed}}.",
   "@authPasswordTooShort": {
     "placeholders": {
       "missing": {
diff --git a/app/lib/l10n/app_localizations.dart b/app/lib/l10n/app_localizations.dart
index 3971f2a..b13789c 100644
--- a/app/lib/l10n/app_localizations.dart
+++ b/app/lib/l10n/app_localizations.dart
@@ -221,7 +221,7 @@ abstract class AppLocalizations {
   /// No description provided for @authPasswordTooShort.
   ///
   /// In en, this message translates to:
-  /// **'At least 10 characters – {missing} more needed.'**
+  /// **'At least 10 characters – {missing, plural, =1{1 more character needed} other{{missing} more characters needed}}.'**
   String authPasswordTooShort(int missing);
 
   /// No description provided for @authPasswordCommon.
diff --git a/app/lib/l10n/app_localizations_de.dart b/app/lib/l10n/app_localizations_de.dart
index 5699b4b..88e00cb 100644
--- a/app/lib/l10n/app_localizations_de.dart
+++ b/app/lib/l10n/app_localizations_de.dart
@@ -84,7 +84,13 @@ class AppLocalizationsDe extends AppLocalizations {
 
   @override
   String authPasswordTooShort(int missing) {
-    return 'Mindestens 10 Zeichen – es fehlen noch $missing.';
+    String _temp0 = intl.Intl.pluralLogic(
+      missing,
+      locale: localeName,
+      other: 'es fehlen noch $missing Zeichen',
+      one: 'es fehlt noch 1 Zeichen',
+    );
+    return 'Mindestens 10 Zeichen – $_temp0.';
   }
 
   @override
diff --git a/app/lib/l10n/app_localizations_en.dart b/app/lib/l10n/app_localizations_en.dart
index ff39cce..14bab3a 100644
--- a/app/lib/l10n/app_localizations_en.dart
+++ b/app/lib/l10n/app_localizations_en.dart
@@ -81,7 +81,13 @@ class AppLocalizationsEn extends AppLocalizations {
 
   @override
   String authPasswordTooShort(int missing) {
-    return 'At least 10 characters – $missing more needed.';
+    String _temp0 = intl.Intl.pluralLogic(
+      missing,
+      locale: localeName,
+      other: '$missing more characters needed',
+      one: '1 more character needed',
+    );
+    return 'At least 10 characters – $_temp0.';
   }
 
   @override
diff --git a/app/lib/main.dart b/app/lib/main.dart
index d182670..cfc4aa1 100644
--- a/app/lib/main.dart
+++ b/app/lib/main.dart
@@ -3,6 +3,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:shuffle/app.dart';
 import 'package:shuffle/core/config/app_config.dart';
 import 'package:shuffle/core/error/global_error_handler.dart';
+import 'package:shuffle/core/licenses/third_party_licenses.dart';
 import 'package:shuffle/core/logging/app_logger.dart';
 import 'package:shuffle/core/routing/url_strategy.dart';
 import 'package:shuffle/features/auth/presentation/providers/auth_redirect.dart';
@@ -11,6 +12,7 @@ import 'package:supabase_flutter/supabase_flutter.dart';
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   AppLogger.configure();
+  registerThirdPartyLicenses();
   installGlobalErrorHandlers();
   configurePathUrlStrategy();
 
diff --git a/app/pubspec.lock b/app/pubspec.lock
index 7ffe1ab..aedf2c8 100644
--- a/app/pubspec.lock
+++ b/app/pubspec.lock
@@ -334,7 +334,7 @@ packages:
     source: hosted
     version: "2.3.2"
   http:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: http
       sha256: "87721a4a50b19c7f1d49001e51409bddc46303966ce89a65af4f4e6004896412"
diff --git a/app/pubspec.yaml b/app/pubspec.yaml
index 8bb4152..f57ecd5 100644
--- a/app/pubspec.yaml
+++ b/app/pubspec.yaml
@@ -23,6 +23,7 @@ dependencies:
   json_annotation: 4.12.0
   logging: 1.3.0
   intl: 0.20.3
+  http: 1.6.0
   url_launcher: 6.3.3
 
 dev_dependencies:
@@ -40,3 +41,4 @@ flutter:
   generate: true
   assets:
     - assets/security/common-passwords.txt
+    - THIRD_PARTY.md
diff --git a/app/test/core/licenses/third_party_licenses_test.dart b/app/test/core/licenses/third_party_licenses_test.dart
new file mode 100644
index 0000000..b283b7b
--- /dev/null
+++ b/app/test/core/licenses/third_party_licenses_test.dart
@@ -0,0 +1,26 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shuffle/core/licenses/third_party_licenses.dart';
+
+void main() {
+  TestWidgetsFlutterBinding.ensureInitialized();
+
+  test('the SecLists MIT license shows up in the LicenseRegistry', () async {
+    registerThirdPartyLicenses();
+
+    final entries = await LicenseRegistry.licenses.toList();
+    final entry = entries.firstWhere(
+      (e) => e.packages.contains(thirdPartyLicensePackage),
+    );
+    final text = entry.paragraphs.map((p) => p.text).join('\n');
+    expect(text, contains('MIT License'));
+    expect(text, contains('Copyright (c) 2018 Daniel Miessler'));
+    expect(text, contains('SecLists'));
+  });
+
+  test('the license asset is declared in the bundle', () async {
+    final text = await rootBundle.loadString(thirdPartyAsset);
+    expect(text, contains('Permission is hereby granted'));
+  });
+}
diff --git a/app/test/core/platform/url_opener_test.dart b/app/test/core/platform/url_opener_test.dart
new file mode 100644
index 0000000..de3af74
--- /dev/null
+++ b/app/test/core/platform/url_opener_test.dart
@@ -0,0 +1,42 @@
+import 'package:flutter_test/flutter_test.dart';
+import 'package:shuffle/core/platform/url_opener.dart';
+
+void main() {
+  group('guardedUrlOpener', () {
+    test('opens http and https URLs with a host', () async {
+      final launched = <Uri>[];
+      final open = guardedUrlOpener((uri) async {
+        launched.add(uri);
+        return true;
+      });
+      expect(await open(Uri.parse('https://shuffle.example/privacy')), isTrue);
+      expect(await open(Uri.parse('http://shuffle.example/terms')), isTrue);
+      expect(launched, hasLength(2));
+    });
+
+    for (final url in [
+      'javascript:alert(1)',
+      'file:///etc/passwd',
+      'intent://scan/#Intent;scheme=zxing;end',
+      'mailto:a@b.de',
+      'https:///no-host',
+      '/relative/path',
+      'data:text/html,hi',
+    ]) {
+      test('refuses $url', () async {
+        var launches = 0;
+        final open = guardedUrlOpener((uri) async {
+          launches++;
+          return true;
+        });
+        expect(await open(Uri.parse(url)), isFalse);
+        expect(launches, 0);
+      });
+    }
+
+    test('returns false when launching throws', () async {
+      final open = guardedUrlOpener((uri) async => throw StateError('x'));
+      expect(await open(Uri.parse('https://shuffle.example')), isFalse);
+    });
+  });
+}
diff --git a/app/test/core/routing/volatile_extra_codec_test.dart b/app/test/core/routing/volatile_extra_codec_test.dart
new file mode 100644
index 0000000..31e9851
--- /dev/null
+++ b/app/test/core/routing/volatile_extra_codec_test.dart
@@ -0,0 +1,43 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:go_router/go_router.dart';
+import 'package:shuffle/core/routing/volatile_extra_codec.dart';
+
+void main() {
+  test('extra is not serialized (nothing lands in the browser history)', () {
+    const codec = VolatileExtraCodec();
+    expect(codec.encode('anna@example.com'), isNull);
+    expect(codec.decode('anna@example.com'), isNull);
+  });
+
+  testWidgets('go_router history state does not contain the extra', (
+    tester,
+  ) async {
+    Object? seen;
+    final router = GoRouter(
+      extraCodec: const VolatileExtraCodec(),
+      initialLocation: '/a',
+      routes: [
+        GoRoute(path: '/a', builder: (_, _) => const SizedBox()),
+        GoRoute(
+          path: '/b',
+          builder: (_, state) {
+            seen = state.extra;
+            return const SizedBox();
+          },
+        ),
+      ],
+    );
+    addTearDown(router.dispose);
+    await tester.pumpWidget(MaterialApp.router(routerConfig: router));
+
+    router.go('/b', extra: 'anna@example.com');
+    await tester.pumpAndSettle();
+
+    expect(seen, 'anna@example.com', reason: 'extra works in memory');
+    final info = router.routeInformationParser.restoreRouteInformation(
+      router.routerDelegate.currentConfiguration,
+    );
+    expect(info?.state.toString(), isNot(contains('anna@example.com')));
+  });
+}
diff --git a/app/test/core/widgets/app_checkbox_field_test.dart b/app/test/core/widgets/app_checkbox_field_test.dart
index effb51e..d7dd22b 100644
--- a/app/test/core/widgets/app_checkbox_field_test.dart
+++ b/app/test/core/widgets/app_checkbox_field_test.dart
@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:flutter/semantics.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:shuffle/core/widgets/app_checkbox_field.dart';
@@ -79,11 +78,13 @@ void main() {
       await tester.tap(find.text('terms'));
       expect(opened, 1);
       expect(toggled, 0);
-      await tester.tap(find.textContaining('I accept the'));
+      await tester.tapAt(
+        tester.getTopLeft(find.byType(AppCheckboxField)) + const Offset(30, 24),
+      );
       expect(toggled, 1);
     });
 
-    testWidgets('exposes checked state, full label and link actions', (
+    testWidgets('exposes checked state and full label on the checkbox node', (
       tester,
     ) async {
       final handle = tester.ensureSemantics();
@@ -107,12 +108,43 @@ void main() {
           hasEnabledState: true,
           isEnabled: true,
           hasTapAction: true,
-          customActions: [const CustomSemanticsAction(label: 'terms')],
         ),
       );
       handle.dispose();
     });
 
+    testWidgets('every link is its own semantics node with isLink (web)', (
+      tester,
+    ) async {
+      final handle = tester.ensureSemantics();
+      var privacy = 0;
+      var terms = 0;
+      await pumpWidgetUnderTest(
+        tester,
+        AppCheckboxField.rich(
+          value: false,
+          onChanged: (_) {},
+          segments: [
+            const AppLabelSegment.text('I accept the '),
+            AppLabelSegment.link('terms', () => terms++),
+            const AppLabelSegment.text(' and the '),
+            AppLabelSegment.link('privacy policy', () => privacy++),
+          ],
+        ),
+      );
+      for (final name in ['terms', 'privacy policy']) {
+        expect(
+          tester.getSemantics(find.bySemanticsLabel(name)),
+          matchesSemantics(label: name, isLink: true, hasTapAction: true),
+        );
+      }
+      tester.semantics.tap(find.semantics.byLabel('terms'));
+      tester.semantics.tap(find.semantics.byLabel('privacy policy'));
+      expect(terms, 1);
+      expect(privacy, 1);
+      handle.dispose();
+    });
+
     testWidgets('error shows icon and text as live region, error border', (
       tester,
     ) async {
diff --git a/app/test/core/widgets/app_text_field_test.dart b/app/test/core/widgets/app_text_field_test.dart
index ca8435f..9edb4f8 100644
--- a/app/test/core/widgets/app_text_field_test.dart
+++ b/app/test/core/widgets/app_text_field_test.dart
@@ -77,6 +77,26 @@ void main() {
       handle.dispose();
     });
 
+    testWidgets('liveError false keeps the error visible but silent', (
+      tester,
+    ) async {
+      final handle = tester.ensureSemantics();
+      await pumpWidgetUnderTest(
+        tester,
+        const AppTextField(
+          label: 'Email',
+          errorText: 'Broken',
+          liveError: false,
+        ),
+      );
+      expect(find.text('Broken'), findsOneWidget);
+      expect(
+        tester.getSemantics(find.text('Broken')),
+        matchesSemantics(label: 'Broken', isLiveRegion: false),
+      );
+      handle.dispose();
+    });
+
     testWidgets('reports changes and keeps input', (tester) async {
       final controller = TextEditingController();
       addTearDown(controller.dispose);
diff --git a/app/test/features/auth/data/auth_failure_mapper_test.dart b/app/test/features/auth/data/auth_failure_mapper_test.dart
index d10e8f7..c018e03 100644
--- a/app/test/features/auth/data/auth_failure_mapper_test.dart
+++ b/app/test/features/auth/data/auth_failure_mapper_test.dart
@@ -1,6 +1,8 @@
 import 'dart:async';
+import 'dart:io';
 
 import 'package:flutter_test/flutter_test.dart';
+import 'package:http/http.dart' as http;
 import 'package:shuffle/features/auth/data/auth_failure_mapper.dart';
 import 'package:shuffle/features/auth/domain/auth_failure.dart';
 import 'package:supabase_flutter/supabase_flutter.dart' hide AuthUser;
@@ -10,10 +12,6 @@ AuthApiException _api(String code, {String status = '400'}) =>
 
 const _triggerBody = '{"code":"P0001","message":"display_name_invalid"}';
 
-class SocketException implements Exception {}
-
-class ClientException implements Exception {}
-
 void main() {
   group('Spec #1 § 4.4 error mapping', () {
     test('KTO-01 Kriterium 7: invalid_credentials', () {
@@ -234,11 +232,15 @@ void main() {
         const AuthFailure.network(),
       );
       expect(
-        mapAuthError(SocketException(), AuthOperation.signIn),
+        mapAuthError(const SocketException('x'), AuthOperation.signIn),
         const AuthFailure.network(),
       );
       expect(
-        mapAuthError(ClientException(), AuthOperation.signIn),
+        mapAuthError(http.ClientException('x'), AuthOperation.signIn),
+        const AuthFailure.network(),
+      );
+      expect(
+        mapAuthError(const HandshakeException('x'), AuthOperation.signIn),
         const AuthFailure.network(),
       );
     });
diff --git a/app/test/features/auth/presentation/auth_redirect_test.dart b/app/test/features/auth/presentation/auth_redirect_test.dart
index 1b23757..671b194 100644
--- a/app/test/features/auth/presentation/auth_redirect_test.dart
+++ b/app/test/features/auth/presentation/auth_redirect_test.dart
@@ -134,6 +134,13 @@ void main() {
   });
 
   group('safeFromPath', () {
+    test('rejects auth pages with a trailing slash', () {
+      expect(safeFromPath('/login/'), isNull);
+      expect(safeFromPath('/login//'), isNull);
+      expect(safeFromPath('/login/?x=1'), isNull);
+      expect(safeFromPath('/reset-password/'), isNull);
+    });
+
     test('accepts internal paths with query', () {
       expect(safeFromPath('/games/1?x=2'), '/games/1?x=2');
     });
diff --git a/app/test/features/auth/presentation/register/register_controller_test.dart b/app/test/features/auth/presentation/register/register_controller_test.dart
index 25b5b14..ddc32e0 100644
--- a/app/test/features/auth/presentation/register/register_controller_test.dart
+++ b/app/test/features/auth/presentation/register/register_controller_test.dart
@@ -120,6 +120,31 @@ void main() {
     });
   });
 
+  test(
+    'two triggers while the password list is still loading send only once',
+    () async {
+      final listLoaded = Completer<CommonPasswordList>();
+      final container = makeContainer(commonPasswords: () => listLoaded.future);
+      fillValid(notifier(container));
+
+      final first = notifier(container).submit();
+      final second = notifier(container).submit();
+      expect(stateOf(container).isSubmitting, isTrue);
+      expect(await second, isFalse);
+
+      listLoaded.complete(commonTestPasswords);
+      expect(await first, isTrue);
+      verify(() => repository.signUp(any())).called(1);
+      expect(stateOf(container).isSubmitting, isFalse);
+    },
+  );
+
+  test('an invalid form leaves the submitting state again', () async {
+    final container = makeContainer();
+    expect(await notifier(container).submit(), isFalse);
+    expect(stateOf(container).isSubmitting, isFalse);
+  });
+
   group('KTO-01 Kriterium 2: minimum age', () {
     test(
       'without the age confirmation nothing is sent and the error shows',
diff --git a/app/test/features/auth/presentation/register/register_screen_test.dart b/app/test/features/auth/presentation/register/register_screen_test.dart
index 85c4504..95026c1 100644
--- a/app/test/features/auth/presentation/register/register_screen_test.dart
+++ b/app/test/features/auth/presentation/register/register_screen_test.dart
@@ -5,6 +5,7 @@ import 'package:flutter_test/flutter_test.dart';
 import 'package:mocktail/mocktail.dart';
 import 'package:shuffle/core/platform/url_opener.dart';
 import 'package:shuffle/core/result/result.dart';
+import 'package:shuffle/core/widgets/app_field_error.dart';
 import 'package:shuffle/features/auth/domain/auth_failure.dart';
 import 'package:shuffle/features/auth/domain/registration_input.dart';
 import 'package:shuffle/l10n/app_localizations_de.dart';
@@ -164,6 +165,33 @@ void main() {
       expect(find.textContaining('Mindestens 10 Zeichen –'), findsNothing);
     });
 
+    testWidgets(
+      'the length hint is announced when the field is left, not while typing',
+      (tester) async {
+        await open(tester);
+
+        bool live() => tester
+            .widget<AppFieldError>(
+              find.descendant(
+                of: find.byKey(const Key('register_password')),
+                matching: find.byType(AppFieldError),
+              ),
+            )
+            .live;
+
+        await type(tester, 'register_password', 'abc');
+        expect(find.text(_de.authPasswordTooShort(7)), findsOneWidget);
+        expect(live(), isFalse);
+        await type(tester, 'register_password', 'abcd');
+        expect(live(), isFalse);
+
+        await tapKey(tester, 'register_display_name');
+        await tester.pump();
+        expect(find.text(_de.authPasswordTooShort(6)), findsOneWidget);
+        expect(live(), isTrue);
+      },
+    );
+
     testWidgets('names a common password', (tester) async {
       await open(tester);
 
diff --git a/docs/design/auth-screens.md b/docs/design/auth-screens.md
index 0e7ed28..396cd9d 100644
--- a/docs/design/auth-screens.md
+++ b/docs/design/auth-screens.md
@@ -136,7 +136,7 @@ Neutrale Texte (Krit. 4, F12) verraten nie, ob eine Adresse registriert ist.
 
 | Schlüssel | de | en |
 |---|---|---|
-| `authPasswordTooShort` | Mindestens 10 Zeichen – es fehlen noch {missing}. | At least 10 characters – {missing} more needed. |
+| `authPasswordTooShort` | Mindestens 10 Zeichen – {missing, plural, =1{es fehlt noch 1 Zeichen} other{es fehlen noch {missing} Zeichen}}. | At least 10 characters – {missing, plural, =1{1 more character needed} other{{missing} more characters needed}}. |
 | `authPasswordCommon` | Dieses Passwort ist sehr verbreitet und leicht zu erraten. Wähle ein anderes. | This password is very common and easy to guess. Choose a different one. |
 | `authPasswordRule` | Mindestens 10 Zeichen. Kein sehr verbreitetes Passwort. | At least 10 characters. Not a very common password. |
 | `authPasswordRequired` | Gib ein Passwort ein. | Enter a password. |
@@ -209,6 +209,10 @@ teilt – Entscheidung beim flutter-dev (A2).
 - Banner und Fehler werden beim Erscheinen vorgelesen (Live-Region); keine reinen Farb-Signale.
 - Passwortfelder: `AppPasswordField` mit `isNewPassword: true` bei Register/Reset, sonst `false`; E-Mail mit
   `AutofillHints.email` (Login: `AutofillHints.username`/`email`), `TextInputType.emailAddress`.
+- Links in Checkbox-Sätzen (`AppCheckboxField.rich`) sind eigene Semantics-Knoten (`link: true`, Label = Linktext,
+  Tap), keine Custom Actions (Flutter-Web setzt diese nicht in ARIA um). Der Checkbox-Knoten trägt den ganzen Satz.
+- Meldungen, die sich bei jedem Tastendruck ändern („es fehlen noch n“), sind während des Tippens keine Live-Region
+  (`liveError: false`) und werden beim Verlassen des Feldes angesagt; der sichtbare Text bleibt.
 - Alle interaktiven Elemente >= 48 dp, Tab-Reihenfolge wie Lesereihenfolge, Fokus sichtbar.
 - Test je Screen mit `textScaler` 2.0 (Android 320 x 640), `androidTapTargetGuideline`,
   `labeledTapTargetGuideline`, `textContrastGuideline`, Hell und Dunkel (T2).
diff --git a/docs/specs/1-auth-registrierung-anmeldung.md b/docs/specs/1-auth-registrierung-anmeldung.md
index 947c256..3998809 100644
--- a/docs/specs/1-auth-registrierung-anmeldung.md
+++ b/docs/specs/1-auth-registrierung-anmeldung.md
@@ -82,7 +82,7 @@ Nur additiv: `create or replace function` und neue Objekte, keine Änderung an b
 | `public.handle_new_user()` | – | Trigger-Funktion | **ersetzt** (`create or replace`). Neue Regeln: (a) Alter und Zustimmung wie bisher. (b) `terms_version := public.trim_ws(meta->>'terms_version')`; ist der Wert `null`, leer oder länger als 50 Zeichen, wirft der Trigger `terms_version_required` (P0001). (c) `display_name := public.trim_ws(meta->>'display_name')`. Ist der Wert `null`, leer, länger als 30 Codepoints oder enthält U+200B, wirft der Trigger `display_name_invalid` (SQLSTATE P0001). **Kein Rückgriff auf das E-Mail-Präfix, kein Kürzen.** (d) Der getrimmte Name und `terms_version` werden gespeichert, `terms_accepted_at` und `age_confirmed_at` = `now()`. (e) `locale` aus `meta->>'locale'`, wenn `de`/`en`, **sonst `'en'`** (F6). |
 | `public.sync_profile_locale_to_auth()` | – | Trigger-Funktion, `security definer`, `search_path = ''` | `after update of locale on public.profiles`, wenn sich der Wert ändert: `update auth.users set raw_user_meta_data = coalesce(raw_user_meta_data,'{}') \|\| jsonb_build_object('locale', new.locale) where id = new.id`. Ausführen nur für den Trigger: `revoke all … from public, anon, authenticated`. |
 
-**Trim-Regel (verbindlich für Client und Server, auch KTO-02):** Leerraum am Anfang und Ende wird entfernt. Danach muss der Name 1 bis 30 **Unicode-Codepoints** lang sein. Der Server prüft mit `char_length(public.trim_ws(…))`, der Client mit `value.trim().runes.length`, **nicht** mit `String.length` (UTF-16). Bekannte Abweichung: Dart-`trim()` entfernt auch Unicode-Leerraum (z. B. NBSP), `btrim` nur Leerzeichen. Der Client sendet bereits getrimmte Werte, die Abweichung ist deshalb nur über die rohe API erreichbar und unkritisch. **Verbotenes Zeichen (Entscheidung Chris):** Ein Anzeigename, der U+200B (Zero Width Space) an irgendeiner Stelle enthält, ist ungültig (Server: `display_name_invalid` bzw. Check `profiles_display_name_no_zwsp`, 23514). U+200B wird nicht getrimmt, sondern abgelehnt. U+200C/U+200D (ZWJ steckt in Emoji-Sequenzen) und U+FEFF (wird getrimmt) sind davon nicht betroffen.
+**Trim-Regel (verbindlich für Client und Server, auch KTO-02):** Leerraum am Anfang und Ende wird entfernt. Danach muss der Name 1 bis 30 **Unicode-Codepoints** lang sein. Der Server prüft mit `char_length(public.trim_ws(…))`, der Client mit `value.trim().runes.length`, **nicht** mit `String.length` (UTF-16). `trim_ws` entfernt denselben Leerraum wie Dart-`trim()` (auch Unicode-Leerraum wie NBSP), Client und Server sind damit gleichwertig; es gibt keine bekannte Abweichung mehr (frühere Fassung: `btrim` nur Leerzeichen, siehe § 10). **Verbotenes Zeichen (Entscheidung Chris):** Ein Anzeigename, der U+200B (Zero Width Space) an irgendeiner Stelle enthält, ist ungültig (Server: `display_name_invalid` bzw. Check `profiles_display_name_no_zwsp`, 23514). U+200B wird nicht getrimmt, sondern abgelehnt. U+200C/U+200D (ZWJ steckt in Emoji-Sequenzen) und U+FEFF (wird getrimmt) sind davon nicht betroffen.
 
 **Keine neuen Tabellen.** `auth.users` und `auth.sessions` verwaltet GoTrue.
 
@@ -265,7 +265,7 @@ Alle Formulare: Eingaben bleiben bei jedem Fehler erhalten (Querschnitt Zuständ
 - Erfolg (jede 200-Antwort **und** `emailSendLimited`, F12) → `/register/check-email`. Text: „Wir haben dir eine E-Mail geschickt, falls die Adresse noch nicht registriert ist …“. Dieselbe Formulierung gilt auch für bereits registrierte Adressen (Krit. 4).
 - `weak_password` vom Server wird ans Passwortfeld gemappt (praktisch nur die Mindestlänge, da kein HIBP).
 
-**CheckEmailScreen** (Krit. 1, 6, 8): Die E-Mail-Adresse kommt per `extra` und steht nicht in der URL. Fehlt sie, etwa nach einem Reload im Web, zeigt der Screen ein E-Mail-Feld für das erneute Senden. Weiter: Hinweis, neutraler Zusatz „Die E-Mail kann einige Minuten dauern …“ (immer, F12), Gültigkeit „1 Stunde“ (Wert aus AUTH-CFG-07 als Konstante in `core/config`, mit Verweis auf die Doku), Aktion „E-Mail erneut senden“ (Modus Bestätigung) mit Rückmeldung und Sperre gegen Doppelklick; `emailSendLimited` → dieselbe Rückmeldung wie bei Erfolg (F12, die Adresse kann hier frei eingegeben sein); `rateLimited` (IP-Drosselung) → Drosselungshinweis. Im Modus Reset gibt es keine Resend-Aktion, sondern einen Link zurück zu `/forgot-password`.
+**CheckEmailScreen** (Krit. 1, 6, 8): Die E-Mail-Adresse kommt per `extra` und steht nicht in der URL. go_router 18 würde `extra` per JSON in den Browser-Verlaufszustand (History-State) schreiben (`RouteMatchListCodec`, `match.dart`); das verhindert der `VolatileExtraCodec` am Router (`extraCodec`, `extra` bleibt nur im Speicher). Fehlt sie, etwa nach einem Reload im Web, zeigt der Screen ein E-Mail-Feld für das erneute Senden. Weiter: Hinweis, neutraler Zusatz „Die E-Mail kann einige Minuten dauern …“ (immer, F12), Gültigkeit „1 Stunde“ (Wert aus AUTH-CFG-07 als Konstante in `core/config`, mit Verweis auf die Doku), Aktion „E-Mail erneut senden“ (Modus Bestätigung) mit Rückmeldung und Sperre gegen Doppelklick; `emailSendLimited` → dieselbe Rückmeldung wie bei Erfolg (F12, die Adresse kann hier frei eingegeben sein); `rateLimited` (IP-Drosselung) → Drosselungshinweis. Im Modus Reset gibt es keine Resend-Aktion, sondern einen Link zurück zu `/forgot-password`.
 
 **LoginScreen** (01b, Krit. 5, 6, 7)
 
@@ -291,12 +291,13 @@ Alle Formulare: Eingaben bleiben bei jedem Fehler erhalten (Querschnitt Zuständ
 
 - `supabaseClientProvider` (Fundament), `authRepositoryProvider`, `commonPasswordListProvider` (FutureProvider, lazy).
 - `authStatusProvider` (Stream) mit Abbildung der `AuthChangeEvent`s: `signedIn`/`tokenRefreshed`/`userUpdated` → `signedIn`, `passwordRecovery` → `passwordRecovery`, `signedOut` → `signedOut`.
+- **Abweichung (umgesetzt in `AuthStatusTracker`, bewusst):** Während einer laufenden Recovery heben `tokenRefreshed` und `signedIn` den Status `passwordRecovery` **nicht** auf. Der Guard endet nur mit `userUpdated` (Passwort geändert), `signedOut` oder dem Wegfall der Sitzung. Grund: Ein Token-Refresh (oder ein erneutes `signedIn` beim Wiederherstellen der Sitzung) im offenen Reset-Screen würde den Nutzer sonst ohne neues Passwort aus dem Guard entlassen. Der Zustand lebt weiter nur im Prozess (5.4, R12).
 - Je Screen ein `@riverpod`-Notifier (`RegisterController` usw.) mit Zustand `AsyncValue<void>` bzw. freezed-Formzustand. Keine Logik in Widgets.
 
 ### 5.6 Liste häufiger Passwörter (Krit. 3)
 
 - Asset `app/assets/security/common-passwords.txt`, ca. 10.000 Einträge (Größenordnung 100 KB), in Kleinschreibung, mit deutschen Einträgen (z. B. `passwort1234`, `hallo12345`). Nur Einträge mit mindestens 10 Zeichen sind relevant, kürzere fängt schon die Längenregel.
-- Quelle und Lizenz prüft `test-engineer` in Aufgabe A1 und dokumentiert sie in `app/assets/security/README.md`. Kandidat: SecLists (MIT); deutsche Ergänzung mit Quellenangabe. Keine Liste ohne klare Lizenz.
+- Quelle und Lizenz dokumentiert `app/assets/security/README.md`. **Entschieden (Chris, 2026-11-03):** Die SecLists-Listen (MIT, Herkunft dokumentiert, Commit gepinnt) werden genutzt; die Frage, dass einzelne Listen aus Datenlecks bzw. Sammlungen Dritter stammen, ist damit abgenommen (die Liste enthält nur Passwörter, keine Konten oder E-Mail-Adressen). Der MIT-Text steht in `app/THIRD_PARTY.md`, wird als Asset gebündelt und zur Laufzeit über `LicenseRegistry` in `showLicensePage` ausgeliefert.
 - Vergleich ohne Groß-/Kleinschreibung, nach Trim. Die Liste wird lazy beim ersten Öffnen eines Passwortfeldes geladen; im Web fällt sie damit nicht beim Start ins Gewicht.
 
 ### 5.7 Neue Pakete (pub.dev geprüft 2026-11-02)
@@ -492,3 +493,15 @@ Nach der Freigabe am 2026-11-02 eingearbeitet. Die Texte der Akzeptanzkriterien
 12. **F12 ergänzt (Chris, 2026-11-02):** Auch „E-Mail erneut senden“ auf dem CheckEmailScreen bestätigt `over_email_send_rate_limit` neutral; im LoginScreen nach `email_not_confirmed` (Krit. 6) bleibt der Drosselungshinweis. `ResendController` mit `ResendOrigin.checkEmail | login` (4.4, 5.4); Tests in 7.1 Krit. 6; R3, R6, F12 angepasst.
 13. **AUTH-CFG-25** neu: `auth.email.secure_password_change = false`, Entscheidung in KTO-11 (N13); 9.4 verweist darauf. **ID-Abgleich** mit dem B2-Stand (`supabase/config.toml`, `docs/auth-konfiguration.md`): IDs 01–24 stimmen überein. Angeglichen: AUTH-CFG-03 CLI-Schlüssel `auth.email.enabled` (statt `auth.email.enable_signup`). Nachgezogen in B2: `secure_password_change` → AUTH-CFG-25 (erledigt).
 14. **Anzeigename: U+200B verboten (Chris, 2026-11-02):** Ein Name mit U+200B an beliebiger Stelle ist ungültig (Trigger `display_name_invalid`, zusätzlicher Check `profiles_display_name_no_zwsp`, Update → 23514; Migration `20261102212208_auth_registration_rules.sql`, pgTAP `05_auth_registration`). U+200C/U+200D/U+FEFF unverändert. Betroffen: E6, 3.1, 3.2 (Check, Trigger, Trim-Regel), RegisterScreen (Client-Regel für 01a: `DisplayNameRule` meldet U+200B als Feldfehler, gleiche Meldung wie „ungültig").
+
+### 2026-11-03 – Review-Findings zu 01a (Branch `feature/1-01a-registrierung`)
+
+1. **Passwortliste, Lizenz entschieden (Chris, 2026-11-03):** SecLists (MIT) wird genutzt, Herkunft in `app/assets/security/README.md` dokumentiert (5.6). Der Lizenztext wird zur Laufzeit in `showLicensePage` ausgeliefert (`LicenseRegistry`, Asset `THIRD_PARTY.md`).
+2. **Rechtstext-Links im Web:** Die Links der Einwilligungs-Checkbox sind eigene Semantics-Knoten (`link: true`, Label, Tap) statt `CustomSemanticsAction` am Checkbox-Knoten; Flutter-Web setzt zusätzliche Aktionen nicht in ARIA um. Checkbox-Knoten behält Label, Zustand und Tap.
+3. **Externe URLs:** `UrlOpener` öffnet nur `http`/`https` mit Host (kein `javascript:`, `file:`, `intent:`).
+4. **Doppel-Submit:** `RegisterController.submit` setzt `submitting` vor dem Laden der Passwortliste.
+5. **Transportfehler:** Erkennung per `is` (`http.ClientException`, `dart:io`-Fehler über bedingten Import) statt `runtimeType.toString()` (bricht in minifiziertem dart2js). `http` ist als direkte Abhängigkeit deklariert (`1.6.0`, bereits transitiv im Lock; keine neue Fremdabhängigkeit).
+6. **Trim-Regel (3.2):** Der Satz „Bekannte Abweichung: Dart-`trim()` … `btrim` nur Leerzeichen“ war falsch. Der Server nutzt `trim_ws` (Abschnitt 3.2), das Verhalten ist mit Dart-`trim()` identisch. Satz korrigiert.
+7. **Recovery-Guard (5.5):** Abweichung vom Wortlaut dokumentiert: `tokenRefreshed`/`signedIn` heben `passwordRecovery` nicht auf.
+8. **`extra` und Browser-Verlauf (5.4):** Geprüft in go_router 18.1.2 (`match.dart`, `RouteMatchListCodec.encode`): Ohne `extraCodec` wird `extra` per `json.encoder` in den History-State geschrieben und überlebt damit einen Reload (nicht in der URL, aber im Verlaufseintrag). Die Annahme „nach einem Reload ist die Adresse weg“ stimmte nur mit einem Codec. Umsetzung: `VolatileExtraCodec` (`core/routing`) verwirft `extra` beim Serialisieren; im Speicher funktioniert es weiter. Nach einem Reload fragt der Screen die Adresse ab (wie spezifiziert).
+9. **Live-Region am Passwortfeld:** Die Meldung „Es fehlen noch n“ wird während des Tippens nicht angesagt (`liveError: false`), bleibt aber sichtbar; beim Verlassen des Feldes wird sie zur Live-Region. Server- und „erforderlich“-Meldungen bleiben sofort live. Plural-Text (ICU) für `authPasswordTooShort`, `safeFromPath` lehnt `/login/` (Schrägstrich am Ende) ab.