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;
     }

lib/utils/sample_data_generator.dart

@@ -142,7 +142,7 @@ class SampleDataGenerator {
         pathLen: 1,
         textType: MessageTextType.plain,
         senderTimestamp: timestamp.millisecondsSinceEpoch ~/ 1000,
-        text: 'S:🧑:${lat.toStringAsFixed(4)},${lon.toStringAsFixed(4)}',
+        text: 'S:🧑:${lat.toStringAsFixed(5)},${lon.toStringAsFixed(5)}',
         receivedAt: timestamp,
         isSarMarker: true,
         sarMarkerType: SarMarkerType.foundPerson,
@@ -171,7 +171,7 @@ class SampleDataGenerator {
         pathLen: 1,
         textType: MessageTextType.plain,
         senderTimestamp: timestamp.millisecondsSinceEpoch ~/ 1000,
-        text: 'S:🔥:${lat.toStringAsFixed(4)},${lon.toStringAsFixed(4)}',
+        text: 'S:🔥:${lat.toStringAsFixed(5)},${lon.toStringAsFixed(5)}',
         receivedAt: timestamp,
         isSarMarker: true,
         sarMarkerType: SarMarkerType.fire,
@@ -200,7 +200,7 @@ class SampleDataGenerator {
         pathLen: 1,
         textType: MessageTextType.plain,
         senderTimestamp: timestamp.millisecondsSinceEpoch ~/ 1000,
-        text: 'S:🏕️:${lat.toStringAsFixed(4)},${lon.toStringAsFixed(4)}',
+        text: 'S:🏕️:${lat.toStringAsFixed(5)},${lon.toStringAsFixed(5)}',
         receivedAt: timestamp,
         isSarMarker: true,
         sarMarkerType: SarMarkerType.stagingArea,
@@ -236,7 +236,7 @@ class SampleDataGenerator {
         pathLen: 1,
         textType: MessageTextType.plain,
         senderTimestamp: timestamp.millisecondsSinceEpoch ~/ 1000,
-        text: 'S:📦:${lat.toStringAsFixed(4)},${lon.toStringAsFixed(4)}${notes[i % notes.length]}',
+        text: 'S:📦:${lat.toStringAsFixed(5)},${lon.toStringAsFixed(5)}${notes[i % notes.length]}',
         receivedAt: timestamp,
         isSarMarker: true,
         sarMarkerType: SarMarkerType.object,
@@ -281,14 +281,14 @@ class SampleDataGenerator {
     // Mix regular messages and SAR markers
     final emergencyMessages = [
       'URGENT: Medical assistance needed at sector 4',
-      'S:🧑:${center.latitude.toStringAsFixed(4)},${(center.longitude + 0.005).toStringAsFixed(4)} Adult male, conscious',
+      'S:🧑:${center.latitude.toStringAsFixed(5)},${(center.longitude + 0.005).toStringAsFixed(5)} Adult male, conscious',
       'Fire spotted - coordinates incoming',
-      'S:🔥:${(center.latitude + 0.008).toStringAsFixed(4)},${(center.longitude + 0.003).toStringAsFixed(4)} Spreading rapidly!',
+      'S:🔥:${(center.latitude + 0.008).toStringAsFixed(5)},${(center.longitude + 0.003).toStringAsFixed(5)} Spreading rapidly!',
       'PRIORITY: Need helicopter support',
       'Medical team en route to your location',
       'Evac helicopter ETA 10 minutes',
       'Emergency resolved - all clear',
-      'S:🏕️:${(center.latitude - 0.002).toStringAsFixed(4)},${(center.longitude - 0.004).toStringAsFixed(4)} Emergency staging area',
+      'S:🏕️:${(center.latitude - 0.002).toStringAsFixed(5)},${(center.longitude - 0.004).toStringAsFixed(5)} Emergency staging area',
       'Emergency services notified and responding',
     ];
 

lib/utils/sar_message_parser.dart

@@ -81,6 +81,9 @@ class SarMessageParser {
       sarMarkerType: sarInfo.type,
       sarGpsCoordinates: sarInfo.location,
       sarNotes: sarInfo.notes, // Extract and store notes
+      sarCustomEmoji: sarInfo.type == SarMarkerType.unknown
+          ? sarInfo.emoji  // Preserve custom emoji for unknown types
+          : null,
     );
   }