Remove some demo project stuff

lib/main.dart

@@ -3,11 +3,11 @@ import 'package:flutter/material.dart';
 import 'package:flutter/scheduler.dart';
 
 void main() {
-  runApp(const MyApp());
+  runApp(const App());
 }
 
-class MyApp extends StatelessWidget {
-  const MyApp({super.key});
+class App extends StatelessWidget {
+  const App({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -22,21 +22,19 @@ class MyApp extends StatelessWidget {
             data: MediaQuery.of(context).copyWith(textScaleFactor: 1.0),
             child: child!);
       },
-      home: const MyHomePage(title: 'DARTTERM'),
+      home: const Viewer(),
     );
   }
 }
 
-class MyHomePage extends StatefulWidget {
-  const MyHomePage({super.key, required this.title});
-
-  final String title;
+class Viewer extends StatefulWidget {
+  const Viewer({super.key});
 
   @override
-  State<MyHomePage> createState() => _MyHomePageState();
+  State<Viewer> createState() => _ViewerState();
 }
 
-class _MyHomePageState extends State<MyHomePage> {
+class _ViewerState extends State<Viewer> {
   Ticker? ticker;
 
   @override
@@ -58,22 +56,3 @@ class _MyHomePageState extends State<MyHomePage> {
     setState(() {/* state changed, force a redraw */});
   }
 }
-
-/*
-class TerminalCustomPainter extends CustomPainter {
-  @override
-  void paint(Canvas canvas, Size size) {
-    final paint = Paint()
-      ..style = PaintingStyle.stroke
-      ..strokeWidth = 4.0
-      ..color = Colors.indigo;
-
-    canvas.drawRect(
-        Rect.fromLTWH(-20 + Random().nextDouble() * 20 - 10, -20, 40, 40),
-        paint);
-  }
-
-  @override
-  bool shouldRepaint(TerminalCustomPainter oldDelegate) => true;
-}
-*/