feat: add local database persistence

test/widget_test.dart

@@ -1,6 +1,9 @@
+import 'package:drift/native.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:focus_seed/src/app/focus_seed_app.dart';
+import 'package:focus_seed/src/data/focus_seed_store.dart';
+import 'package:focus_seed/src/data/local/focus_seed_database.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 
 void main() {
@@ -14,8 +17,7 @@ void main() {
   });
 
   testWidgets('Today guides the user from intention to focus', (tester) async {
-    await tester.pumpWidget(const FocusSeedApp(locale: Locale('en')));
-    await tester.pumpAndSettle();
+    await pumpFocusSeedApp(tester, locale: const Locale('en'));
 
     expect(find.text('Focus Seed'), findsOneWidget);
     expect(find.text("TODAY'S INTENTION"), findsOneWidget);
@@ -35,8 +37,7 @@ void main() {
   });
 
   testWidgets('bottom navigation exposes Journey and Me', (tester) async {
-    await tester.pumpWidget(const FocusSeedApp(locale: Locale('en')));
-    await tester.pumpAndSettle();
+    await pumpFocusSeedApp(tester, locale: const Locale('en'));
 
     await tester.tap(find.text('Journey'));
     await tester.pumpAndSettle();
@@ -60,8 +61,7 @@ void main() {
       tester.platformDispatcher.clearTextScaleFactorTestValue();
     });
 
-    await tester.pumpWidget(const FocusSeedApp(locale: Locale('en')));
-    await tester.pumpAndSettle();
+    await pumpFocusSeedApp(tester, locale: const Locale('en'));
 
     expect(find.text('Focus Seed'), findsOneWidget);
     expect(find.byType(Scrollable), findsWidgets);
@@ -69,8 +69,7 @@ void main() {
   });
 
   testWidgets('development default uses concise Chinese copy', (tester) async {
-    await tester.pumpWidget(const FocusSeedApp());
-    await tester.pumpAndSettle();
+    await pumpFocusSeedApp(tester);
 
     expect(find.text('Focus Seed'), findsOneWidget);
     expect(find.text('\u4eca\u65e5\u76ee\u6807'), findsOneWidget);
@@ -88,8 +87,7 @@ void main() {
   testWidgets('development language switch changes the active locale', (
     tester,
   ) async {
-    await tester.pumpWidget(const FocusSeedApp());
-    await tester.pumpAndSettle();
+    await pumpFocusSeedApp(tester);
 
     await tester.tap(find.text('\u6211\u7684'));
     await tester.pumpAndSettle();
@@ -102,3 +100,15 @@ void main() {
     expect(find.text('Language'), findsOneWidget);
   });
 }
+
+Future<void> pumpFocusSeedApp(WidgetTester tester, {Locale? locale}) async {
+  final database = FocusSeedDatabase(NativeDatabase.memory());
+  addTearDown(database.close);
+  await tester.pumpWidget(
+    FocusSeedApp(
+      locale: locale,
+      focusSeedStore: FocusSeedStore(database: database),
+    ),
+  );
+  await tester.pumpAndSettle();
+}