feat: Implement conversation mute and favorite features with UI integration and state management.

lib/features/messaging/data/models/messaging_models.dart

@@ -90,6 +90,10 @@ class Conversation {
   final int userUnreadCount;
   final int agentUnreadCount;
   final int unreadCount;
+  final bool userMuted;
+  final bool agentMuted;
+  final bool userFavorited;
+  final bool agentFavorited;
   final String createdAt;
   final String updatedAt;
   final OtherParty otherParty;
@@ -104,6 +108,10 @@ class Conversation {
     this.userUnreadCount = 0,
     this.agentUnreadCount = 0,
     this.unreadCount = 0,
+    this.userMuted = false,
+    this.agentMuted = false,
+    this.userFavorited = false,
+    this.agentFavorited = false,
     required this.createdAt,
     required this.updatedAt,
     required this.otherParty,
@@ -120,6 +128,10 @@ class Conversation {
       userUnreadCount: json['userUnreadCount'] as int? ?? 0,
       agentUnreadCount: json['agentUnreadCount'] as int? ?? 0,
       unreadCount: json['unreadCount'] as int? ?? 0,
+      userMuted: json['userMuted'] as bool? ?? false,
+      agentMuted: json['agentMuted'] as bool? ?? false,
+      userFavorited: json['userFavorited'] as bool? ?? false,
+      agentFavorited: json['agentFavorited'] as bool? ?? false,
       createdAt: json['createdAt'] as String,
       updatedAt: json['updatedAt'] as String,
       otherParty:
@@ -134,6 +146,10 @@ class Conversation {
     int? unreadCount,
     String? lastMessageAt,
     String? lastMessageText,
+    bool? userMuted,
+    bool? agentMuted,
+    bool? userFavorited,
+    bool? agentFavorited,
     OtherParty? otherParty,
     List<ChatMessage>? messages,
   }) {
@@ -146,6 +162,10 @@ class Conversation {
       userUnreadCount: userUnreadCount,
       agentUnreadCount: agentUnreadCount,
       unreadCount: unreadCount ?? this.unreadCount,
+      userMuted: userMuted ?? this.userMuted,
+      agentMuted: agentMuted ?? this.agentMuted,
+      userFavorited: userFavorited ?? this.userFavorited,
+      agentFavorited: agentFavorited ?? this.agentFavorited,
       createdAt: createdAt,
       updatedAt: updatedAt,
       otherParty: otherParty ?? this.otherParty,