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

app/lib/l10n/strings.dart

@@ -0,0 +1,39 @@
+import 'package:fluent/fluent.dart';
+import 'package:flutter/services.dart' show rootBundle;
+import 'package:flutter/widgets.dart';
+
+/// Loads and formats the app's Fluent messages. All user-facing strings come
+/// from locales/en-US/main.ftl; lookups fall back to the message ID when a
+/// message is missing so that missing translations are obvious in the UI.
+class Strings {
+  final FluentBundle _bundle = FluentBundle('en-US');
+
+  /// Loads the messages from the app's asset bundle.
+  Future<void> load() async {
+    final source = await rootBundle.loadString('locales/en-US/main.ftl');
+    loadSource(source);
+  }
+
+  /// Loads messages from an already-read source, so tests can read the file
+  /// from disk instead of the asset bundle.
+  void loadSource(String source) {
+    _bundle.addMessages(source);
+  }
+
+  String t(String id, [Map<String, Object?> args = const {}]) {
+    return _bundle.format(id, args: args) ?? id;
+  }
+}
+
+/// Provides [Strings] to the widget tree.
+class StringsScope extends InheritedWidget {
+  const StringsScope({required this.strings, required super.child, super.key});
+
+  final Strings strings;
+
+  static Strings of(BuildContext context) =>
+      context.getInheritedWidgetOfExactType<StringsScope>()!.strings;
+
+  @override
+  bool updateShouldNotify(StringsScope oldWidget) => false;
+}