ui bump threshold minor change

pi/ui/lib/app_root.dart

@@ -1,5 +1,4 @@
 import 'dart:convert';
-import 'dart:io';
 import 'package:flutter/material.dart';
 import 'package:http/http.dart' as http;
 

pi/ui/lib/screens/dashboard_screen.dart

@@ -26,7 +26,7 @@ class DashboardScreen extends StatefulWidget {
 }
 
 class _DashboardScreenState extends State<DashboardScreen> {
-  static const _surpriseThreshold = 0.2; // G threshold for navigator surprise
+  static const _surpriseThreshold = 0.3; // G threshold for navigator surprise
 
   final _navigatorKey = GlobalKey<NavigatorWidgetState>();