feat: build v1 Mews client: reader UI, gestures, Drift store, fetch actor

app/lib/presentation/app.dart

@@ -0,0 +1,100 @@
+import 'package:actors/actors.dart';
+import 'package:flutter/material.dart';
+import 'package:signals/signals_flutter.dart' show SignalBuilder;
+
+import '../application/actors/fetch_actor.dart';
+import '../application/controllers/browser_controller.dart';
+import '../application/controllers/reader_settings_controller.dart';
+import '../database/database.dart';
+import '../l10n/strings.dart';
+import 'reader/reader_screen.dart';
+
+/// Wires the app's dependencies together and provides them to the tree.
+/// Everything is local-first: the database is created up front and the fetch
+/// actor is the only path to the network.
+class AppDependencies {
+  AppDependencies({MewsDatabase? database})
+      : db = database ?? MewsDatabase(),
+        fetch = Actor.create(FetchHandler.new) {
+    browser = BrowserController(db: db, fetch: fetch);
+    settings = ReaderSettingsController(db);
+    library = LibraryController(db);
+  }
+
+  final MewsDatabase db;
+  final Actor<FetchCommand, FetchResult> fetch;
+  late final BrowserController browser;
+  late final ReaderSettingsController settings;
+  late final LibraryController library;
+
+  Future<void> start() async {
+    await settings.load();
+    await library.load();
+    await browser.restoreLastSession();
+  }
+}
+
+class AppScope extends InheritedWidget {
+  const AppScope({
+    required this.deps,
+    required this.strings,
+    required super.child,
+    super.key,
+  });
+
+  final AppDependencies deps;
+  final Strings strings;
+
+  static AppScope of(BuildContext context) =>
+      context.getInheritedWidgetOfExactType<AppScope>()!;
+
+  @override
+  bool updateShouldNotify(AppScope oldWidget) => false;
+}
+
+class MewsApp extends StatelessWidget {
+  const MewsApp({required this.deps, required this.strings, super.key});
+
+  final AppDependencies deps;
+  final Strings strings;
+
+  @override
+  Widget build(BuildContext context) {
+    return AppScope(
+      deps: deps,
+      strings: strings,
+      child: const _ThemedApp(),
+    );
+  }
+}
+
+class _ThemedApp extends StatelessWidget {
+  const _ThemedApp();
+
+  @override
+  Widget build(BuildContext context) {
+    final deps = AppScope.of(context).deps;
+    return SignalBuilder(builder: (context) {
+      final mode = switch (deps.settings.themeMode.value) {
+        'light' => ThemeMode.light,
+        'dark' => ThemeMode.dark,
+        _ => ThemeMode.system,
+      };
+      return MaterialApp(
+        title: 'Mews',
+        themeMode: mode,
+        theme: ThemeData(
+          useMaterial3: true,
+          colorScheme: ColorScheme.fromSeed(seedColor: const Color(0xff1a4f9c)),
+        ),
+        darkTheme: ThemeData(
+          useMaterial3: true,
+          brightness: Brightness.dark,
+          colorScheme: ColorScheme.fromSeed(
+              seedColor: const Color(0xff1a4f9c), brightness: Brightness.dark),
+        ),
+        home: const ReaderScreen(),
+      );
+    });
+  }
+}