add: chart w/sample data to quick view

app/lib/pages/widgets/map_widget.dart

@@ -4,6 +4,7 @@ import '../consts.dart';
 import 'package:flutter_map/flutter_map.dart';
 import 'package:latlong2/latlong.dart';
 import 'package:fl_chart/fl_chart.dart';
+import 'quick_view_chart.dart';
 
 class MapContainerWidget extends StatefulWidget {
   final List<MarkerTemplate> markerList;
@@ -90,16 +91,12 @@ class _MapContainerWidgetState extends State<MapContainerWidget> {
                           child: Stack(
                             children: [
                               Visibility( // Content only visible when box is maximized
-                                visible: !isMinimized,
+                                visible: !isMinimized && selectedMarker != null,
                                 child: Center(
                                   child: SizedBox(
                                     width: (screenWidth * boxWidth) / 2.3,
                                     height: (screenWidth * boxWidth) / 2.3,
-                                    child: Text(
-                                      'Placeholder',
-                                      style: regTextStyle,
-                                    ),
-                                    //child: YourChartWidget(), // Replace YourChartWidget with your actual chart widget
+                                    child: const QuickViewChart(),
                                   ),
                                 ),
                               ),

app/lib/pages/widgets/quick_view_chart.dart

+import 'package:flutter/material.dart';
+import 'package:fl_chart/fl_chart.dart';
+
+class QuickViewChart extends StatelessWidget {
+  const QuickViewChart({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return LineChart(
+      LineChartData(
+        titlesData: FlTitlesData(
+          leftTitles: SideTitles(showTitles: true),
+          bottomTitles: SideTitles(showTitles: true),
+        ),
+        borderData: FlBorderData(
+          show: true,
+        ),
+        minX: 0,  // Test data
+        maxX: 4,
+        minY: 0,
+        maxY: 50,
+        lineBarsData: [
+          LineChartBarData(
+            spots: [
+              FlSpot(0, 10),  // Test data
+              FlSpot(1, 20),
+              FlSpot(2, 30),
+              FlSpot(3, 40),
+            ],
+            isCurved: true,
+            colors: [Colors.blue],
+          ),
+        ],
+      ),
+    );
+  }
+}