consolidate parsing in single parseMarkerText in map_screen.dart

lib/screens/chat_screen.dart

@@ -9,7 +9,6 @@ import 'package:meshcore_open/screens/path_trace_map.dart';
 import 'package:provider/provider.dart';
 
 import '../utils/platform_info.dart';
-import 'package:latlong2/latlong.dart';
 
 import '../connector/meshcore_connector.dart';
 import '../connector/meshcore_protocol.dart';
@@ -1589,7 +1588,7 @@ class _MessageBubble extends StatelessWidget {
     final isOutgoing = message.isOutgoing;
     final colorScheme = Theme.of(context).colorScheme;
     final gifId = GifHelper.parseGif(message.text);
-    final poi = _parsePoiMessage(message.text);
+    final poi = parseMarkerText(message.text);
     final isFailed = message.status == MessageStatus.failed;
     final bubbleColor = isFailed
         ? colorScheme.errorContainer
@@ -1863,23 +1862,9 @@ class _MessageBubble extends StatelessWidget {
     );
   }
 
-  _PoiInfo? _parsePoiMessage(String text) {
-    final trimmed = text.trim();
-    final match = RegExp(
-      r'^m:([\-0-9.]+),([\-0-9.]+)\|([^|]*)\|(.*)$',
-    ).firstMatch(trimmed);
-    if (match == null) return null;
-    final lat = double.tryParse(match.group(1) ?? '');
-    final lon = double.tryParse(match.group(2) ?? '');
-    if (lat == null || lon == null) return null;
-    final label = match.group(3) ?? '';
-    final flags = match.group(4) ?? '';
-    return _PoiInfo(lat: lat, lon: lon, label: label, flags: flags);
-  }
-
   Widget _buildPoiMessage(
     BuildContext context,
-    _PoiInfo poi,
+    MarkerPayload poi,
     Color textColor,
     Color metaColor,
     double textScale,
@@ -1907,7 +1892,7 @@ class _MessageBubble extends StatelessWidget {
               context,
               MaterialPageRoute(
                 builder: (context) => MapScreen(
-                  highlightPosition: LatLng(poi.lat, poi.lon),
+                  highlightPosition: poi.position,
                   highlightLabel: poi.label,
                   highlightMarkerKey: key,
                 ),
@@ -2090,17 +2075,3 @@ class _MessageBubble extends StatelessWidget {
     return '$hour:$minute';
   }
 }
-
-class _PoiInfo {
-  final double lat;
-  final double lon;
-  final String label;
-  final String flags;
-
-  const _PoiInfo({
-    required this.lat,
-    required this.lon,
-    required this.label,
-    required this.flags,
-  });
-}