add timeline edit/delete

lib/components/calculator/calculator.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:go_router/go_router.dart';
 import 'package:provider/provider.dart';
 import 'package:mileograph_flutter/objects/objects.dart';
 import 'package:mileograph_flutter/services/api_service.dart';
@@ -119,8 +120,6 @@ class _RouteCalculatorState extends State<RouteCalculator> {
   RouteResult? get result => _routeResult;
   String? _errorMessage;
 
-  bool _showDetails = false;
-
   bool _fetched = false;
 
   @override
@@ -188,13 +187,6 @@ class _RouteCalculatorState extends State<RouteCalculator> {
   @override
   Widget build(BuildContext context) {
     final data = context.watch<DataService>();
-    if (_showDetails && _routeResult != null) {
-      return RouteDetailsView(
-        route: _routeResult!.calculatedRoute,
-        costs: _routeResult!.costs,
-        onBack: () => setState(() => _showDetails = false),
-      );
-    }
     return Column(
       children: [
         Expanded(
@@ -263,7 +255,11 @@ class _RouteCalculatorState extends State<RouteCalculator> {
         else if (_routeResult != null) ...[
           RouteSummaryWidget(
             distance: _routeResult!.distance,
-            onDetailsPressed: () => setState(() => _showDetails = true),
+            onDetailsPressed: () {
+              final result = _routeResult;
+              if (result == null) return;
+              context.push('/calculator/details', extra: result);
+            },
           ),
           if (widget.onApplyRoute != null)
             Padding(