a bunch of flutter updates

walkguide-mobile/walkguide_app/lib/features/manual/manual_screen.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+
+import '../../core/services/voice_command_handler.dart';
+
+class ManualScreen extends StatelessWidget {
+  const ManualScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    final commands = VoiceCommandKey.values.map((key) => key.name).toList();
+    return Scaffold(
+      appBar: AppBar(title: const Text('Manual')),
+      body: ListView.separated(
+        padding: const EdgeInsets.all(16),
+        itemCount: commands.length,
+        separatorBuilder: (_, __) => const Divider(height: 1),
+        itemBuilder: (context, index) => ListTile(
+          leading: const Icon(Icons.record_voice_over),
+          title: Text(commands[index]),
+        ),
+      ),
+    );
+  }
+}