feat: replace json tools with local data controls

test/focus_seed_controller_test.dart

@@ -0,0 +1,80 @@
+import 'package:drift/native.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:focus_seed/src/application/focus_seed_controller.dart';
+import 'package:focus_seed/src/core/date_keys.dart';
+import 'package:focus_seed/src/data/focus_seed_store.dart';
+import 'package:focus_seed/src/data/local/focus_seed_database.dart';
+import 'package:focus_seed/src/models/app_state.dart';
+import 'package:focus_seed/src/models/focus_session.dart';
+import 'package:focus_seed/src/models/habit.dart';
+import 'package:focus_seed/src/models/mood.dart';
+import 'package:focus_seed/src/models/reflection_entry.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+void main() {
+  setUp(() {
+    SharedPreferences.setMockInitialValues({});
+  });
+
+  test('clearToday removes only current-day progress', () async {
+    final database = FocusSeedDatabase(NativeDatabase.memory());
+    addTearDown(database.close);
+    final store = FocusSeedStore(database: database);
+    final today = todayKey();
+    final yesterday = dateKey(DateTime.now().subtract(const Duration(days: 1)));
+    final habit = Habit(
+      id: 'habit-1',
+      title: 'Keep scope clear',
+      createdAt: DateTime.now().subtract(const Duration(days: 2)),
+      completedDates: {today, yesterday},
+    );
+    await store.save(
+      AppState(
+        anchor: 'Finish the cleanup',
+        anchorDateKey: today,
+        habits: [habit],
+        sessions: [
+          FocusSession(
+            id: 'session-today',
+            minutes: 25,
+            completedAt: DateTime.now(),
+          ),
+          FocusSession(
+            id: 'session-yesterday',
+            minutes: 15,
+            completedAt: DateTime.now().subtract(const Duration(days: 1)),
+          ),
+        ],
+        reflections: [
+          ReflectionEntry(
+            id: 'reflection-today',
+            dateKey: today,
+            note: 'Today note',
+            mood: Mood.clear,
+            createdAt: DateTime.now(),
+          ),
+          ReflectionEntry(
+            id: 'reflection-yesterday',
+            dateKey: yesterday,
+            note: 'Yesterday note',
+            mood: Mood.calm,
+            createdAt: DateTime.now().subtract(const Duration(days: 1)),
+          ),
+        ],
+      ),
+    );
+    final controller = FocusSeedController(store: store);
+    await controller.load();
+
+    final cleared = await controller.clearToday();
+    final state = controller.state!;
+
+    expect(cleared, isTrue);
+    expect(state.activeAnchor(today), isEmpty);
+    expect(state.habits.single.completedDates, {yesterday});
+    expect(state.sessions.map((session) => session.id), ['session-yesterday']);
+    expect(state.reflections.map((reflection) => reflection.id), [
+      'reflection-yesterday',
+    ]);
+  });
+}

test/widget_test.dart

@@ -49,6 +49,20 @@ void main() {
     expect(find.text('Appearance'), findsOneWidget);
   });
 
+  testWidgets('Me manages local data without JSON tools', (tester) async {
+    await pumpFocusSeedApp(tester, locale: const Locale('en'));
+
+    await tester.tap(find.text('Me'));
+    await tester.pumpAndSettle();
+
+    expect(find.text('Local data'), findsOneWidget);
+    expect(find.text('Clear today'), findsOneWidget);
+    await tester.scrollUntilVisible(find.text('Delete all local data'), 180);
+    expect(find.text('Delete all local data'), findsOneWidget);
+    expect(find.text('Export JSON'), findsNothing);
+    expect(find.text('Import JSON'), findsNothing);
+  });
+
   testWidgets('Today remains usable at narrow width and 200 percent text', (
     tester,
   ) async {