feat: Flutter client localisation (12 languages)

Add flutter_localizations + intl, 12 ARB files (en/ru/es/de/fr/it/pt/zh/ja/ko/ar/hi),
replace all hardcoded Russian UI strings with AppLocalizations, detect system locale
on first launch, localise bottom nav bar labels, document rule in CLAUDE.md.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

client/lib/features/home/home_provider.dart

@@ -56,3 +56,23 @@ final todayJobsProvider =
     StateNotifierProvider<TodayJobsNotifier, AsyncValue<List<DishJobSummary>>>(
   (ref) => TodayJobsNotifier(ref.read(recognitionServiceProvider)),
 );
+
+// ── All recognition jobs (history screen) ─────────────────────
+
+class AllJobsNotifier extends StateNotifier<AsyncValue<List<DishJobSummary>>> {
+  final RecognitionService _service;
+
+  AllJobsNotifier(this._service) : super(const AsyncValue.loading()) {
+    load();
+  }
+
+  Future<void> load() async {
+    state = const AsyncValue.loading();
+    state = await AsyncValue.guard(() => _service.listAllJobs());
+  }
+}
+
+final allJobsProvider =
+    StateNotifierProvider<AllJobsNotifier, AsyncValue<List<DishJobSummary>>>(
+  (ref) => AllJobsNotifier(ref.read(recognitionServiceProvider)),
+);