feat: Enhance SAR message handling with color indexing and localization

- Added `sarColorIndex` to `Message` and `SarMarker` models to support color indexing for SAR markers.
- Introduced a standard color palette in `SarTemplate` and methods to retrieve colors based on index.
- Updated `SarTemplate` to include localization for template names.
- Modified `SarUpdateSheet` and message sending logic to include color index in SAR messages.
- Enhanced `SarMessageParser` to support both old and new message formats with color index.
- Updated UI components to reflect changes in SAR marker color handling based on the new color index.
- Improved sample data generation to utilize localized strings for better testing and demonstration.

lib/widgets/contacts/direct_message_sheet.dart

@@ -9,6 +9,7 @@ import '../../models/message.dart';
 import '../../providers/connection_provider.dart';
 import '../../providers/messages_provider.dart';
 import '../../providers/app_provider.dart';
+import '../../services/message_destination_preferences.dart';
 import '../../utils/toast_logger.dart';
 import '../../l10n/app_localizations.dart';
 
@@ -159,6 +160,15 @@ class _DirectMessageSheetState extends State<DirectMessageSheet> {
         messagesProvider.markMessageFailed(messageId);
       }
 
+      // Save the recipient to preferences so messages tab filters to this contact
+      final recipientType = widget.contact.type == ContactType.room
+          ? MessageDestinationPreferences.destinationTypeRoom
+          : MessageDestinationPreferences.destinationTypeContact;
+      await MessageDestinationPreferences.setDestination(
+        recipientType,
+        recipientPublicKey: widget.contact.publicKeyHex,
+      );
+
       _textController.clear();
       _focusNode.unfocus();
 

lib/widgets/map_markers.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart';
 import '../models/contact.dart';
 import '../models/sar_marker.dart';
+import '../models/sar_template.dart';
 import '../l10n/app_localizations.dart';
 
 class MapMarkers {
@@ -129,7 +130,7 @@ class MapMarkers {
                 Container(
                   padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 1),
                   decoration: BoxDecoration(
-                    color: _getSarMarkerColor(marker.type),
+                    color: _getSarMarkerColor(marker),
                     borderRadius: BorderRadius.circular(3),
                   ),
                   child: Text(
@@ -145,7 +146,7 @@ class MapMarkers {
                 // Marker emoji/icon
                 Container(
                   decoration: BoxDecoration(
-                    color: _getSarMarkerColor(marker.type),
+                    color: _getSarMarkerColor(marker),
                     shape: BoxShape.circle,
                     border: Border.all(color: Colors.white, width: 2),
                     boxShadow: [
@@ -302,8 +303,16 @@ class MapMarkers {
     return Colors.red; // Stale
   }
 
-  static Color _getSarMarkerColor(SarMarkerType type) {
-    switch (type) {
+  static Color _getSarMarkerColor(SarMarker marker) {
+    // If marker has a color index, use it (new format)
+    if (marker.colorIndex != null && marker.colorIndex! >= 0 && marker.colorIndex! < 8) {
+      final colorHex = SarTemplate.getColorFromIndex(marker.colorIndex!);
+      final hexCode = colorHex.replaceAll('#', '');
+      return Color(int.parse('FF$hexCode', radix: 16));
+    }
+
+    // Otherwise fall back to type-based colors (old format or backward compatibility)
+    switch (marker.type) {
       case SarMarkerType.foundPerson:
         return Colors.green;
       case SarMarkerType.fire:

lib/widgets/messages/sar_update_sheet.dart

@@ -18,6 +18,7 @@ class SarUpdateSheet extends StatefulWidget {
     Position,
     Uint8List?,
     bool,
+    int colorIndex,
   )
   onSend;
   final Position? prePopulatedPosition;
@@ -784,7 +785,7 @@ class _SarUpdateSheetState extends State<SarUpdateSheet> {
                               displayText = _selectedTemplate!.name;
                             }
 
-                            // Send SAR marker with emoji and display text
+                            // Send SAR marker with emoji, display text, and color index
                             await widget.onSend(
                               _selectedTemplate!.emoji,
                               displayText,
@@ -793,6 +794,7 @@ class _SarUpdateSheetState extends State<SarUpdateSheet> {
                                   ? null
                                   : _selectedContact!.publicKey,
                               _selectedContact!.isChannel,
+                              _selectedTemplate!.getColorIndex(), // Include color index
                             );
                             if (context.mounted) {
                               Navigator.pop(context);
@@ -869,7 +871,7 @@ class TemplateChip extends StatelessWidget {
                 crossAxisAlignment: CrossAxisAlignment.start,
                 children: [
                   Text(
-                    template.name,
+                    template.getLocalizedName(context),
                     style: TextStyle(
                       fontSize: 16,
                       fontWeight: FontWeight.w600,