feat: Implement messaging functionality with conversation and chat screens, and enhance agent detail views.

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

@@ -19,6 +19,8 @@ class AgentProfile {
   final bool isVerified;
   final bool isFeatured;
   final bool isActive;
+  final bool isAvailable;
+  final String? email;
   final AgentType? agentType;
   final AgentUser? user;
   final List<AgentFieldValue> fieldValues;
@@ -46,6 +48,8 @@ class AgentProfile {
     this.isVerified = false,
     this.isFeatured = false,
     this.isActive = true,
+    this.isAvailable = false,
+    this.email,
     this.agentType,
     this.user,
     this.fieldValues = const [],
@@ -212,6 +216,8 @@ class AgentProfile {
       isVerified: json['isVerified'] as bool? ?? false,
       isFeatured: json['isFeatured'] as bool? ?? false,
       isActive: json['isActive'] as bool? ?? true,
+      isAvailable: json['isAvailable'] as bool? ?? false,
+      email: json['email'] as String?,
       agentType: json['agentType'] != null
           ? AgentType.fromJson(json['agentType'] as Map<String, dynamic>)
           : null,
@@ -264,6 +270,8 @@ class AgentFieldValue {
   final String fieldSlug;
   final String fieldName;
   final String fieldType;
+  final String? sectionSlug;
+  final String? sectionName;
   final String? textValue;
   final num? numberValue;
   final bool? booleanValue;
@@ -275,6 +283,8 @@ class AgentFieldValue {
     required this.fieldSlug,
     required this.fieldName,
     required this.fieldType,
+    this.sectionSlug,
+    this.sectionName,
     this.textValue,
     this.numberValue,
     this.booleanValue,
@@ -282,6 +292,39 @@ class AgentFieldValue {
     this.dateValue,
   });
 
+  /// Parse from the /agents/{id}/field-values endpoint format
+  /// which has { fieldSlug, fieldName, fieldType, sectionSlug, value }
+  factory AgentFieldValue.fromFieldValueResponse(Map<String, dynamic> json) {
+    final value = json['value'];
+    String? textValue;
+    num? numberValue;
+    bool? booleanValue;
+    dynamic jsonValue;
+
+    if (value is String) {
+      textValue = value;
+    } else if (value is num) {
+      numberValue = value;
+    } else if (value is bool) {
+      booleanValue = value;
+    } else if (value is List || value is Map) {
+      jsonValue = value;
+    }
+
+    return AgentFieldValue(
+      id: '',
+      fieldSlug: json['fieldSlug'] as String? ?? '',
+      fieldName: json['fieldName'] as String? ?? '',
+      fieldType: json['fieldType'] as String? ?? '',
+      sectionSlug: json['sectionSlug'] as String?,
+      sectionName: json['sectionName'] as String?,
+      textValue: textValue,
+      numberValue: numberValue,
+      booleanValue: booleanValue,
+      jsonValue: jsonValue,
+    );
+  }
+
   factory AgentFieldValue.fromJson(Map<String, dynamic> json) {
     // API returns field info nested: { field: { slug, name, fieldType } }
     // Fallback to top-level fieldSlug/fieldName/fieldType for compatibility