feat: add matchPercentage field to AgentProfile and display match badge in agent search results

lib/features/agents/data/models/agent_profile.dart

@@ -30,6 +30,7 @@ class AgentProfile {
   final List<String> legacySpecializations;
   final List<String> languages;
   final List<String> serviceAreas;
+  final int? matchPercentage;
 
   const AgentProfile({
     required this.id,
@@ -61,6 +62,7 @@ class AgentProfile {
     this.legacySpecializations = const [],
     this.languages = const [],
     this.serviceAreas = const [],
+    this.matchPercentage,
   });
 
   String get fullName => '$firstName $lastName'.trim();
@@ -279,6 +281,7 @@ class AgentProfile {
               ?.map((e) => e.toString())
               .toList() ??
           const [],
+      matchPercentage: json['matchPercentage'] as int?,
     );
   }
 }