feat(i18n): add capture prompt translations and locale init

- integrate flutter_localizations and delegates in MaterialApp
- use language-only supportedLocales; add resolution callback
- initialize I18n on app start and when switching language
- localize capture screen prompt via I18n.t
- schedule map centering via postFrame to avoid race conditions
- add flutter_localizations to pubspec

lib/app.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 import 'l10n/i18n.dart';
 import 'l10n/locale_provider.dart';
 import 'screens/report_flow/capture_screen.dart';
@@ -22,10 +23,29 @@ class FixMateApp extends StatelessWidget {
           darkTheme: AppThemes.dark(),
           themeMode: ThemeMode.system,
           locale: localeProvider.locale,
-          supportedLocales: const [
-            Locale('en', 'US'),
-            Locale('ms', 'MY'),
+          localizationsDelegates: const [
+            GlobalMaterialLocalizations.delegate,
+            GlobalWidgetsLocalizations.delegate,
+            GlobalCupertinoLocalizations.delegate,
           ],
+          supportedLocales: const [
+            Locale('en'),
+            Locale('ms'),
+          ],
+          localeResolutionCallback: (locale, supported) {
+            debugPrint('[i18n] localeResolution: device=$locale, supported=$supported');
+            if (locale == null) return supported.first;
+            for (final s in supported) {
+              if (s.languageCode == locale.languageCode) {
+                return s;
+              }
+            }
+            return supported.first;
+          },
+          builder: (context, child) {
+            debugPrint('[i18n] Building MaterialApp; locale=${localeProvider.locale}');
+            return child!;
+          },
           home: const StartRouter(),
         );
       },
@@ -153,6 +173,7 @@ class _StartRouterState extends State<StartRouter> {
 
   @override
   Widget build(BuildContext context) {
+    debugPrint('[i18n] StartRouter: hasMaterial=${Localizations.of<MaterialLocalizations>(context, MaterialLocalizations) != null} locale=${Localizations.localeOf(context)}');
     if (_loading) {
       return const Scaffold(body: Center(child: CircularProgressIndicator()));
     }

lib/l10n/locale_provider.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'i18n.dart';
 
 /// Provider for managing app locale and language switching
 class LocaleProvider extends ChangeNotifier {
@@ -20,6 +21,7 @@ class LocaleProvider extends ChangeNotifier {
     _prefs = await SharedPreferences.getInstance();
     final savedLanguage = _prefs.getString(_languageKey) ?? _defaultLanguage;
     _locale = Locale(savedLanguage);
+    await I18n.init(_locale);
     notifyListeners();
   }
 
@@ -29,6 +31,7 @@ class LocaleProvider extends ChangeNotifier {
 
     _locale = locale;
     await _prefs.setString(_languageKey, locale.languageCode);
+    await I18n.init(locale);
     notifyListeners();
   }
 

lib/screens/map/map_screen.dart

@@ -64,9 +64,11 @@ class _MapScreenState extends State<MapScreen> {
     _applyFilters();
     // If we have filtered reports, fit; otherwise try device location
     if (_filteredReports.isNotEmpty) {
+      debugPrint('[map] _refresh: filtered=${_filteredReports.length}; scheduling fitBounds postFrame');
       WidgetsBinding.instance.addPostFrameCallback((_) => _fitToBounds());
     } else {
-      await _centerOnDeviceOrDefault();
+      debugPrint('[map] _refresh: filtered=0; scheduling centerOnDeviceOrDefault postFrame');
+      WidgetsBinding.instance.addPostFrameCallback((_) => _centerOnDeviceOrDefault());
     }
   }
 
@@ -74,11 +76,12 @@ class _MapScreenState extends State<MapScreen> {
     try {
       final pos = await LocationService.getBestAvailablePosition();
       if (pos != null) {
+        debugPrint('[map] _centerOnDeviceOrDefault: moving to device location (${pos.latitude}, ${pos.longitude})');
         _mapController.move(LatLng(pos.latitude, pos.longitude), _defaultZoom);
         return;
       }
     } catch (_) {}
-    // fallback
+    debugPrint('[map] _centerOnDeviceOrDefault: moving to default center ($_defaultCenter) zoom=$_defaultZoom');
     _mapController.move(_defaultCenter, _defaultZoom);
   }
 

lib/screens/report_flow/capture_screen.dart

@@ -116,6 +116,7 @@ class _CaptureScreenState extends State<CaptureScreen> {
  
   @override
   Widget build(BuildContext context) {
+    debugPrint('[i18n] CaptureScreen: locale=${I18n.currentLocale} prompt=${I18n.t('capture.prompt')}');
     return Scaffold(
       appBar: AppBar(
         title: Text(I18n.t('nav.report')),
@@ -126,7 +127,7 @@ class _CaptureScreenState extends State<CaptureScreen> {
           mainAxisAlignment: MainAxisAlignment.center,
           children: [
             Text(
-              'Take a photo of the issue',
+              I18n.t('capture.prompt'),
               style: Theme.of(context).textTheme.headlineSmall,
               textAlign: TextAlign.center,
             ),