feat: add localisation

lib/views/pin_lock_view.dart

@@ -2,6 +2,8 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
 import '../viewmodels/pin_lock_view_model.dart';
+import '../l10n/app_localizations.dart';
+import '../l10n/app_localizations_helpers.dart';
 
 enum PinEntryMode { unlock, create }
 
@@ -30,16 +32,14 @@ class _PinEntryViewState extends State<PinEntryView> {
 
   bool get _isCreateFlow => widget.mode == PinEntryMode.create;
 
-  String get _title {
-    if (!_isCreateFlow) return 'Enter PIN';
-    return _isConfirmStep ? 'Confirm PIN' : 'Create a PIN';
+  String _title(AppLocalizations l10n) {
+    if (!_isCreateFlow) return l10n.enterPin;
+    return _isConfirmStep ? l10n.confirmPin : l10n.createPin;
   }
 
-  String? get _subtitle {
+  String? _subtitle(AppLocalizations l10n) {
     if (!_isCreateFlow) return null;
-    return _isConfirmStep
-        ? 'Enter the same PIN again'
-        : 'Youʼll use this to unlock the app';
+    return _isConfirmStep ? l10n.confirmPinSubtitle : l10n.enterPinSubtitle;
   }
 
   void _onDigitPressed(String digit) {
@@ -65,6 +65,7 @@ class _PinEntryViewState extends State<PinEntryView> {
 
   Future<void> _handleComplete() async {
     final viewModel = context.read<PinLockViewModel>();
+    final l10n = AppLocalizations.of(context);
 
     if (_isCreateFlow && !_isConfirmStep) {
       // First entry of a new PIN — stash it, then ask for confirmation.
@@ -84,7 +85,7 @@ class _PinEntryViewState extends State<PinEntryView> {
           _firstEntry = null;
           _isConfirmStep = false;
         });
-        _fail('PINs didnʼt match. Try again.');
+        _fail(l10n.pinsDidNotMatch);
         return;
       }
 
@@ -100,7 +101,7 @@ class _PinEntryViewState extends State<PinEntryView> {
           _firstEntry = null;
           _isConfirmStep = false;
         });
-        _fail(viewModel.errorMessage ?? 'Something went wrong.');
+        _fail(l10n.localizedError(viewModel.errorMessage));
       }
       return;
     }
@@ -114,7 +115,7 @@ class _PinEntryViewState extends State<PinEntryView> {
     if (ok) {
       widget.onSuccess?.call();
     } else {
-      _fail(viewModel.errorMessage ?? 'Incorrect PIN.');
+      _fail(l10n.localizedError(viewModel.errorMessage));
     }
   }
 
@@ -133,6 +134,7 @@ class _PinEntryViewState extends State<PinEntryView> {
   @override
   Widget build(BuildContext context) {
     final scheme = Theme.of(context).colorScheme;
+    final l10n = AppLocalizations.of(context);
 
     return Scaffold(
       body: SafeArea(
@@ -143,11 +145,14 @@ class _PinEntryViewState extends State<PinEntryView> {
               const Spacer(flex: 2),
               Icon(Icons.lock_outline_rounded, size: 36, color: scheme.primary),
               const SizedBox(height: 16),
-              Text(_title, style: Theme.of(context).textTheme.headlineMedium),
-              if (_subtitle != null) ...[
+              Text(
+                _title(l10n),
+                style: Theme.of(context).textTheme.headlineMedium,
+              ),
+              if (_subtitle(l10n) != null) ...[
                 const SizedBox(height: 6),
                 Text(
-                  _subtitle!,
+                  _subtitle(l10n)!,
                   textAlign: TextAlign.center,
                   style: Theme.of(context).textTheme.bodyMedium,
                 ),