Adopt shared wallet_ui dialogs, logging, and biometric auth from wallet-core; Bug fixes

diff --git a/lib/screens/address_book.dart b/lib/screens/address_book.dart
index d5f7d49..25bafc6 100644
--- a/lib/screens/address_book.dart
+++ b/lib/screens/address_book.dart
@@ -86,6 +86,7 @@ class _AddressBookScreenState extends State<AddressBookScreen> {
                   child: TextField(
                     controller: _searchController,
                     onChanged: _onSearchChanged,
+                    textInputAction: TextInputAction.done,
                     decoration: InputDecoration(
                       hintText: i18n.addressBookSearchHint,
                       prefixIcon: Icon(Icons.search),
@@ -358,6 +359,7 @@ class _ContactDialogState extends State<_ContactDialog> {
               ),
               validator: _validateName,
               textCapitalization: TextCapitalization.words,
+              textInputAction: TextInputAction.next,
             ),
             SizedBox(height: 16),
             TextFormField(
@@ -368,6 +370,7 @@ class _ContactDialogState extends State<_ContactDialog> {
               ),
               validator: _validateAddress,
               maxLines: 3,
+              textInputAction: TextInputAction.done,
             ),
           ],
         ),
diff --git a/lib/screens/create_wallet_password.dart b/lib/screens/create_wallet_password.dart
index 66c188c..e25311e 100644
--- a/lib/screens/create_wallet_password.dart
+++ b/lib/screens/create_wallet_password.dart
@@ -113,6 +113,7 @@ class _CreateWalletPasswordScreenState extends State<CreateWalletPasswordScreen>
                       TextFormField(
                         controller: _passwordController,
                         obscureText: _obscurePassword,
+                        textInputAction: TextInputAction.next,
                         validator: _validatePassword,
                         decoration: InputDecoration(
                           labelText: 'Password',
@@ -132,6 +133,7 @@ class _CreateWalletPasswordScreenState extends State<CreateWalletPasswordScreen>
                       TextFormField(
                         controller: _confirmPasswordController,
                         obscureText: _obscureConfirmPassword,
+                        textInputAction: TextInputAction.done,
                         validator: _validateConfirmPassword,
                         decoration: InputDecoration(
                           labelText: 'Confirm Password',
diff --git a/lib/screens/restore_wallet.dart b/lib/screens/restore_wallet.dart
index 195adfb..2267508 100644
--- a/lib/screens/restore_wallet.dart
+++ b/lib/screens/restore_wallet.dart
@@ -277,6 +277,7 @@ class _RestoreWalletScreenState extends State<RestoreWalletScreen> with SecureSc
                   controller: _restoreHeightController,
                   onChanged: _onRestoreHeightChanged,
                   keyboardType: TextInputType.number,
+                  textInputAction: TextInputAction.done,
                   inputFormatters: <TextInputFormatter>[FilteringTextInputFormatter.digitsOnly],
                   decoration: InputDecoration(
                     labelText: i18n.restoreWalletRestoreHeightLabel,
diff --git a/lib/screens/send.dart b/lib/screens/send.dart
index e7389c0..caddb8d 100644
--- a/lib/screens/send.dart
+++ b/lib/screens/send.dart
@@ -572,6 +572,7 @@ class _SendScreenState extends State<SendScreen> {
                       TextField(
                         controller: _destinationAddressController,
                         maxLines: null,
+                        textInputAction: TextInputAction.done,
                         decoration: InputDecoration(
                           labelText: i18n.address,
                           border: OutlineInputBorder(),
@@ -663,6 +664,7 @@ class _SendScreenState extends State<SendScreen> {
                     TextField(
                       controller: _amountController,
                       keyboardType: TextInputType.numberWithOptions(decimal: true),
+                      textInputAction: TextInputAction.done,
                       inputFormatters: [FilteringTextInputFormatter.allow(RegExp(r'^\d+(\.\d*)?'))],
                       decoration: InputDecoration(
                         labelText: i18n.amount,
@@ -842,6 +844,7 @@ class _ContactPickerDialogState extends State<_ContactPickerDialog> {
             TextField(
               controller: _searchController,
               onChanged: _onSearchChanged,
+              textInputAction: TextInputAction.done,
               decoration: InputDecoration(
                 hintText: i18n.addressBookSearchHint,
                 prefixIcon: Icon(Icons.search),
diff --git a/lib/screens/settings.dart b/lib/screens/settings.dart
index ac3401b..6501875 100644
--- a/lib/screens/settings.dart
+++ b/lib/screens/settings.dart
@@ -4,7 +4,6 @@ import 'package:flutter/material.dart';
 import 'package:package_info_plus/package_info_plus.dart';
 import 'package:skylight_wallet/util/logging.dart';
 import 'package:provider/provider.dart';
-import 'package:local_auth/local_auth.dart';
 
 import 'package:skylight_wallet/l10n/app_localizations.dart';
 import 'package:skylight_wallet/models/fiat_rate_model.dart';
@@ -18,6 +17,9 @@ import 'package:skylight_wallet/periodic_tasks.dart';
 import 'package:skylight_wallet/services/notifications_service.dart';
 import 'package:skylight_wallet/services/shared_preferences_service.dart';
 import 'package:skylight_wallet/widgets/wallet_navigation_bar.dart';
+import 'package:wallet_infra/wallet_infra.dart' show BiometricAuth, BiometricAuthResult;
+import 'package:wallet_ui/wallet_ui.dart'
+    show DeleteWalletDialog, DeleteWalletLabels, ExportLogsDialog, ExportLogsLabels;
 
 class SettingsScreen extends StatefulWidget {
   const SettingsScreen({super.key});
@@ -94,25 +96,9 @@ class _SettingsScreenState extends State<SettingsScreen> {
     final i18n = AppLocalizations.of(context)!;
 
     if (value) {
-      final auth = LocalAuthentication();
-
-      try {
-        final didAuthenticate = await auth.authenticate(
-          localizedReason: i18n.settingsAppLockUnlockReason,
-          options: AuthenticationOptions(useErrorDialogs: true, sensitiveTransaction: true),
-        );
-
-        if (!didAuthenticate) {
-          if (mounted) {
-            ScaffoldMessenger.of(
-              context,
-            ).showSnackBar(SnackBar(content: Text(i18n.settingsAppLockUnableToAuthError)));
-          }
-          return;
-        }
-      } catch (error) {
-        log(LogLevel.error, 'Unable to authenticate: ${error.toString()}');
-
+      final result = await BiometricAuth.authenticate(reason: i18n.settingsAppLockUnlockReason);
+      // Enabling app-lock is an explicit opt-in, so decline and error both report.
+      if (result != BiometricAuthResult.authenticated) {
         if (mounted) {
           ScaffoldMessenger.of(
             context,
@@ -153,7 +139,15 @@ class _SettingsScreenState extends State<SettingsScreen> {
       }
 
       if (mounted) {
-        _showExportLogsDialog(logFiles);
+        ExportLogsDialog.show(
+          context,
+          logFiles,
+          ExportLogsLabels(
+            title: i18n.settingsExportLogsLabel,
+            cancel: i18n.cancel,
+            exportError: i18n.settingsExportLogsError,
+          ),
+        );
       }
     } catch (e) {
       if (mounted) {
@@ -164,83 +158,17 @@ class _SettingsScreenState extends State<SettingsScreen> {
     }
   }
 
-  void _showExportLogsDialog(List<LogFileInfo> logFiles) {
-    final i18n = AppLocalizations.of(context)!;
-    final screenWidth = MediaQuery.of(context).size.width;
-    final dialogWidth = screenWidth.clamp(0.0, 500.0);
-
-    showDialog(
-      context: context,
-      builder: (context) => AlertDialog(
-        constraints: BoxConstraints.tightFor(width: dialogWidth),
-        insetPadding: EdgeInsets.symmetric(horizontal: 16.0, vertical: 24.0),
-        title: Text(i18n.settingsExportLogsLabel),
-        content: SizedBox(
-          width: double.maxFinite,
-          height: 300,
-          child: ListView.builder(
-            itemCount: logFiles.length,
-            itemBuilder: (context, index) {
-              final file = logFiles[index];
-              final dateStr =
-                  '${file.modified.year}-${file.modified.month.toString().padLeft(2, '0')}-${file.modified.day.toString().padLeft(2, '0')}';
-              final sizeKb = (file.size / 1024).toStringAsFixed(1);
-
-              return ListTile(
-                onTap: () async {
-                  Navigator.pop(context);
-                  await exportLogFiles([file]);
-                },
-                leading: Icon(Icons.description_outlined),
-                title: Text(file.name),
-                subtitle: Text('$dateStr • $sizeKb KB'),
-                trailing: Icon(Icons.ios_share),
-              );
-            },
-          ),
-        ),
-        actions: [TextButton(onPressed: () => Navigator.pop(context), child: Text(i18n.cancel))],
-      ),
-    );
-  }
-
   void _showDeleteWalletDialog() {
     final i18n = AppLocalizations.of(context)!;
-
-    showDialog(
-      context: context,
-      builder: (BuildContext context) {
-        final screenWidth = MediaQuery.of(context).size.width;
-        final dialogWidth = screenWidth.clamp(0.0, 500.0);
-
-        return AlertDialog(
-          constraints: BoxConstraints.tightFor(width: dialogWidth),
-          insetPadding: EdgeInsets.symmetric(horizontal: 16.0, vertical: 24.0),
-          title: Row(
-            spacing: 6,
-            children: [
-              Icon(Icons.delete_forever, color: Colors.red),
-              Text(i18n.settingsDeleteWalletButton),
-            ],
-          ),
-          content: Text(i18n.settingsDeleteWalletDialogText),
-          actions: [
-            TextButton.icon(
-              onPressed: _deleteWallet,
-              icon: Icon(Icons.delete_forever),
-              label: Text(i18n.settingsDeleteWalletDialogDeleteButton),
-              style: TextButton.styleFrom(foregroundColor: Colors.red),
-            ),
-            FilledButton.icon(
-              onPressed: () {
-                Navigator.pop(context);
-              },
-              icon: Icon(Icons.cancel),
-              label: Text(i18n.cancel),
-            ),
-          ],
-        );
-      },
+    DeleteWalletDialog.show(
+      context,
+      DeleteWalletLabels(
+        title: i18n.settingsDeleteWalletButton,
+        body: i18n.settingsDeleteWalletDialogText,
+        confirm: i18n.settingsDeleteWalletDialogDeleteButton,
+        cancel: i18n.cancel,
+      ),
+      onConfirm: _deleteWallet,
     );
   }
 
@@ -517,13 +445,15 @@ class _SettingsScreenState extends State<SettingsScreen> {
                 Switch(value: _verboseLoggingEnabled, onChanged: _setVerboseLoggingEnabled),
               ],
             ),
-            if (Platform.isIOS)
+            // Only meaningful with logs to export, so hide the whole row when
+            // verbose logging is off rather than showing a disabled button.
+            if (Platform.isIOS && _verboseLoggingEnabled)
               Row(
                 mainAxisAlignment: MainAxisAlignment.spaceBetween,
                 children: [
                   Text(i18n.settingsExportLogsLabel, style: TextStyle(fontSize: 18)),
                   TextButton.icon(
-                    onPressed: _verboseLoggingEnabled ? _exportLogs : null,
+                    onPressed: _exportLogs,
                     icon: Icon(Icons.ios_share),
                     label: Text(i18n.settingsExportLogsButton),
                   ),
diff --git a/lib/screens/unlock.dart b/lib/screens/unlock.dart
index f21ed65..7243236 100644
--- a/lib/screens/unlock.dart
+++ b/lib/screens/unlock.dart
@@ -1,11 +1,10 @@
 import 'dart:io';
 import 'package:flutter/material.dart';
-import 'package:local_auth/local_auth.dart';
 
 import 'package:skylight_wallet/l10n/app_localizations.dart';
-import 'package:skylight_wallet/util/logging.dart';
 import 'package:skylight_wallet/widgets/loading_button.dart';
 import 'package:skylight_wallet/wallet_core_glue.dart';
+import 'package:wallet_infra/wallet_infra.dart' show BiometricAuth, BiometricAuthResult;
 
 class UnlockScreen extends StatefulWidget {
   const UnlockScreen({super.key});
@@ -36,28 +35,19 @@ class _UnlockScreenState extends State<UnlockScreen> {
   }
 
   Future<void> _promptUnlock() async {
-    final auth = LocalAuthentication();
-
-    try {
-      final i18n = AppLocalizations.of(context)!;
-      final didAuthenticate = await auth.authenticate(
-        localizedReason: i18n.unlockReason,
-        options: AuthenticationOptions(useErrorDialogs: true, sensitiveTransaction: true),
-      );
-
-      if (didAuthenticate) {
-        if (mounted) Navigator.pushReplacementNamed(context, '/wallet_home');
-      }
-    } catch (error) {
-      log(LogLevel.error, 'Unable to authenticate: ${error.toString()}');
+    final i18n = AppLocalizations.of(context)!;
+    final result = await BiometricAuth.authenticate(reason: i18n.unlockReason);
 
+    // Auto-prompted with a password field right there: stay silent on a decline
+    // (the user chose to type instead), report only a real error.
+    if (result == BiometricAuthResult.authenticated) {
+      if (mounted) Navigator.pushReplacementNamed(context, '/wallet_home');
+    } else if (result == BiometricAuthResult.error) {
       if (mounted) {
-        final i18n = AppLocalizations.of(context)!;
         ScaffoldMessenger.of(
           context,
         ).showSnackBar(SnackBar(content: Text(i18n.unlockUnableToAuthError)));
       }
-      return;
     }
   }
 
@@ -136,6 +126,7 @@ class _UnlockScreenState extends State<UnlockScreen> {
                             TextFormField(
                               controller: _passwordController,
                               obscureText: _obscurePassword,
+                              textInputAction: TextInputAction.done,
                               validator: _validatePasswordField,
                               enabled: !_isLoading,
                               decoration: InputDecoration(
diff --git a/lib/util/logging.dart b/lib/util/logging.dart
index 521941c..c5b4e88 100644
--- a/lib/util/logging.dart
+++ b/lib/util/logging.dart
@@ -1,188 +1,6 @@
-import 'dart:async';
-import 'dart:io';
-import 'package:flutter/foundation.dart';
-import 'package:path_provider/path_provider.dart';
-import 'package:share_plus/share_plus.dart';
-import 'package:skylight_wallet/services/shared_preferences_service.dart';
-import 'package:skylight_wallet/util/dirs.dart';
-
-enum LogLevel { info, warn, error }
-
-class _LogQueue {
-  Future<void>? _lastWrite;
-
-  Future<void> add(Future<void> Function() operation) {
-    _lastWrite = _lastWrite?.then((_) => operation()) ?? operation();
-    return _lastWrite!;
-  }
-}
-
-final _logQueue = _LogQueue();
-
-String _timestamp() => DateTime.now().toUtc().toIso8601String();
-
-Future<File> _getLogFile() async {
-  Directory? directory;
-
-  // Get external storage directory for Android, or documents directory for iOS
-  if (Platform.isAndroid) {
-    directory = await getExternalStorageDirectory();
-  } else {
-    directory = await getAppDir();
-  }
-
-  if (directory == null) {
-    throw Exception('Could not access storage directory');
-  }
-
-  // Create logs subdirectory
-  final logsDir = Directory('${directory.path}/logs');
-  if (!await logsDir.exists()) {
-    await logsDir.create(recursive: true);
-  }
-
-  // Create filename with current date (YYYY-MM-DD)
-  final dateStr = DateTime.now().toIso8601String().split('T').first;
-  final filePath = '${logsDir.path}/log_$dateStr.txt';
-
-  return File(filePath);
-}
-
-Future<void> cleanOldLogFiles() async {
-  try {
-    Directory? directory;
-
-    if (Platform.isAndroid) {
-      directory = await getExternalStorageDirectory();
-    } else {
-      directory = await getAppDir();
-    }
-
-    if (directory == null) {
-      return;
-    }
-
-    final logsDir = Directory('${directory.path}/logs');
-    if (!await logsDir.exists()) {
-      return;
-    }
-
-    // Get current time and calculate cutoff date
-    const daysToKeep = 30;
-    final now = DateTime.now();
-    final cutoffDate = now.subtract(const Duration(days: daysToKeep));
-
-    // List all files in logs directory
-    final files = await logsDir.list().toList();
-
-    for (var entity in files) {
-      if (entity is File) {
-        final stat = await entity.stat();
-        final modifiedDate = stat.modified;
-
-        // Delete file if it's older than the cutoff date
-        if (modifiedDate.isBefore(cutoffDate)) {
-          await entity.delete();
-          debugPrint('Deleted old log file: ${entity.path}');
-        }
-      }
-    }
-  } catch (error) {
-    debugPrint('Failed to clean old logs: $error');
-  }
-}
-
-Future<void> log(LogLevel level, String message, [Map<String, dynamic>? meta]) async {
-  final verboseLoggingEnabled =
-      await SharedPreferencesService.get<bool>(SharedPreferencesKeys.verboseLoggingEnabled) ??
-      false;
-
-  if (level == LogLevel.info && !verboseLoggingEnabled) {
-    if (!verboseLoggingEnabled) {
-      return;
-    }
-  }
-
-  final ts = _timestamp();
-  final label = level.toString().split('.').last.toUpperCase();
-  final metaStr = (meta == null || meta.isEmpty) ? '' : ' ${meta.toString()}';
-  final output = '[$ts] [$label] $message $metaStr';
-
-  if (level == LogLevel.error) {
-    debugPrint(output);
-  } else {
-    if (kDebugMode) debugPrint(output);
-  }
-
-  if (verboseLoggingEnabled) {
-    _logQueue.add(() async {
-      try {
-        final file = await _getLogFile();
-        await file.writeAsString('$output\n', mode: FileMode.append);
-      } catch (error) {
-        debugPrint('Failed to write log to file: $error');
-      }
-    });
-  }
-}
-
-class LogFileInfo {
-  final String path;
-  final String name;
-  final DateTime modified;
-  final int size;
-
-  LogFileInfo({required this.path, required this.name, required this.modified, required this.size});
-}
-
-/// Returns a list of available log files sorted by date (newest first)
-Future<List<LogFileInfo>> getLogFiles() async {
-  Directory? directory;
-
-  if (Platform.isAndroid) {
-    directory = await getExternalStorageDirectory();
-  } else {
-    directory = await getAppDir();
-  }
-
-  if (directory == null) {
-    return [];
-  }
-
-  final logsDir = Directory('${directory.path}/logs');
-  if (!await logsDir.exists()) {
-    return [];
-  }
-
-  final files = await logsDir.list().toList();
-  final logFiles = <LogFileInfo>[];
-
-  for (var entity in files) {
-    if (entity is File && entity.path.endsWith('.txt')) {
-      final stat = await entity.stat();
-      final name = entity.path.split('/').last;
-      logFiles.add(
-        LogFileInfo(path: entity.path, name: name, modified: stat.modified, size: stat.size),
-      );
-    }
-  }
-
-  // Sort by date (newest first)
-  logFiles.sort((a, b) => b.modified.compareTo(a.modified));
-  return logFiles;
-}
-
-/// Exports selected log files via the system share sheet (iOS/Android)
-Future<void> exportLogFiles(List<LogFileInfo> files) async {
-  if (files.isEmpty) {
-    throw Exception('No log files selected');
-  }
-
-  try {
-    final xFiles = files.map((f) => XFile(f.path)).toList();
-    await SharePlus.instance.share(ShareParams(files: xFiles));
-  } catch (error) {
-    debugPrint('Failed to export logs: $error');
-    rethrow;
-  }
-}
+// The whole logger lives in wallet-core (wallet_infra, D25): the log() API +
+// formatter, the verbose gate, the file sink (FileLogSink), log rotation
+// (cleanOldLogFiles), and file listing/export. The app only installs the sink
+// (console + file) in wallet_core_glue.dart.
+export 'package:wallet_infra/wallet_infra.dart'
+    show LogLevel, log, LogFileInfo, getLogFiles, exportLogFiles, cleanOldLogFiles;
diff --git a/lib/wallet_core_glue.dart b/lib/wallet_core_glue.dart
index 7c79d5c..fd02df1 100644
--- a/lib/wallet_core_glue.dart
+++ b/lib/wallet_core_glue.dart
@@ -15,7 +15,6 @@ import 'package:skylight_wallet/services/notifications_service.dart';
 import 'package:skylight_wallet/services/shared_preferences_service.dart';
 import 'package:skylight_wallet/services/tor_service.dart';
 import 'package:skylight_wallet/services/tor_settings_service.dart';
-import 'package:skylight_wallet/util/logging.dart';
 
 import 'package:wallet_infra/wallet_infra.dart' as wcore;
 import 'package:wallet_background/wallet_background.dart' show BackgroundSync;
@@ -62,7 +61,12 @@ void installWalletCore() {
 
   FiatRates.install(getTorProxy: TorSettingsService.sharedInstance.getProxy);
 
-  wcore.WalletLog.sink = const _SkylightLogSink();
+  // The whole logger lives in wallet-core now (D25): console + file sinks fan out
+  // from one installed sink; the file sink is verbose-gated internally.
+  wcore.WalletLog.sink = wcore.CompositeLogSink([
+    const wcore.DebugPrintLogSink(),
+    wcore.FileLogSink(),
+  ]);
   wcore.WalletLog.isVerbose = () async =>
       await SharedPreferencesService.get<bool>(SharedPreferencesKeys.verboseLoggingEnabled) ??
       false;
@@ -217,15 +221,3 @@ Future<void> deleteWallet(BuildContext context) async {
 void applyConnectionChange(BuildContext context) {
   unawaited(Provider.of<WalletManager>(context, listen: false).applyConnectionChange('XMR'));
 }
-
-/// Routes wallet-core log lines into skylight's logger.
-class _SkylightLogSink extends wcore.LogSink {
-  const _SkylightLogSink();
-
-  @override
-  Future<void> write(wcore.LogLevel level, String line) => log(switch (level) {
-    wcore.LogLevel.info => LogLevel.info,
-    wcore.LogLevel.warn => LogLevel.warn,
-    wcore.LogLevel.error => LogLevel.error,
-  }, line);
-}
diff --git a/lib/widgets/connection_settings_form.dart b/lib/widgets/connection_settings_form.dart
index 07843ab..17ade88 100644
--- a/lib/widgets/connection_settings_form.dart
+++ b/lib/widgets/connection_settings_form.dart
@@ -559,6 +559,7 @@ class _ConnectionSettingsFormState extends State<ConnectionSettingsForm> {
             ),
           ),
           keyboardType: TextInputType.url,
+          textInputAction: TextInputAction.done,
         ),
         if (_errorMessage != null)
           Text(_errorMessage!, style: TextStyle(color: Theme.of(context).colorScheme.error)),
@@ -572,6 +573,7 @@ class _ConnectionSettingsFormState extends State<ConnectionSettingsForm> {
             border: OutlineInputBorder(borderRadius: BorderRadius.circular(8.0)),
           ),
           keyboardType: TextInputType.number,
+          textInputAction: TextInputAction.done,
           inputFormatters: <TextInputFormatter>[FilteringTextInputFormatter.digitsOnly],
         ),
         Column(
diff --git a/lib/widgets/tor_settings_form.dart b/lib/widgets/tor_settings_form.dart
index 0b057b6..3121b1a 100644
--- a/lib/widgets/tor_settings_form.dart
+++ b/lib/widgets/tor_settings_form.dart
@@ -217,6 +217,7 @@ class _TorSettingsFormState extends State<TorSettingsForm> {
               suffixIconColor: _connectionSuccess ? Colors.teal : Colors.red,
             ),
             keyboardType: TextInputType.number,
+            textInputAction: TextInputAction.done,
             inputFormatters: [FilteringTextInputFormatter.digitsOnly],
             onChanged: (_) {
               setState(() {