Refactor SAR marker handling and add template management

- Updated CompassSarList and DetailedCompassDialog to use marker.displayName instead of marker.type.displayName.
- Enhanced DrawingLayer and DrawingMarkersLayer to support simple mode for drawing visibility and interaction.
- Added toggle switches in DrawingToolbar for showing/hiding received drawings and SAR markers.
- Modified MapMarkers to utilize custom emojis and display names for markers.
- Introduced RecipientSelectorSheet for selecting message recipients with search functionality.
- Refactored SarUpdateSheet to use SAR templates instead of marker types, allowing for emoji and name customization.
- Created SarTemplateEditDialog for adding and editing SAR templates with color selection and preview.

lib/utils/drawing_message_parser.dart

@@ -12,9 +12,13 @@ class DrawingMessageParser {
   }
 
   /// Parse drawing message text into MapDrawing object
-  /// senderName should be extracted from packet metadata
+  /// senderName and messageId should be extracted from packet metadata
   /// Returns null if parsing fails
-  static MapDrawing? parseDrawingMessage(String text, {String? senderName}) {
+  static MapDrawing? parseDrawingMessage(
+    String text, {
+    String? senderName,
+    String? messageId,
+  }) {
     if (!isDrawingMessage(text)) {
       return null;
     }
@@ -27,8 +31,12 @@ class DrawingMessageParser {
       final json = jsonDecode(jsonStr) as Map<String, dynamic>;
 
       // Use ultra-compact network format parser
-      // Sender name comes from packet metadata, not JSON
-      return MapDrawing.fromNetworkJson(json, senderName: senderName);
+      // Sender name and message ID come from packet metadata, not JSON
+      return MapDrawing.fromNetworkJson(
+        json,
+        senderName: senderName,
+        messageId: messageId,
+      );
     } catch (e) {
       return null;
     }