fix: improve image caching reliability by clearing cache on startup and forcing widget rebuilds on tab switches

lib/features/home/presentation/widgets/top_professionals_section.dart

@@ -75,6 +75,7 @@ class _TopProfessionalsSectionState
     final activeList = _activeTab == 'agents' ? cmsAgents : cmsLenders;
     final isLoading = homeState.isLoading;
 
+
     return Padding(
       padding: const EdgeInsets.symmetric(horizontal: 24),
       child: Column(
@@ -107,14 +108,19 @@ class _TopProfessionalsSectionState
             SizedBox(
               height: 540,
               child: ListView.builder(
+                // Unique key per tab forces Flutter to rebuild (not reuse)
+                // the list items, preventing stale images from the other tab.
+                key: ValueKey('professionals_$_activeTab'),
                 controller: _scrollController,
                 scrollDirection: Axis.horizontal,
                 physics: const BouncingScrollPhysics(),
                 padding: const EdgeInsets.only(bottom: 16, left: 10, right: 10),
                 itemCount: activeList.length,
                 itemBuilder: (context, index) {
+                  final item = activeList[index];
                   final cardWidth = MediaQuery.of(context).size.width - 48;
                   return SizedBox(
+                    key: ValueKey('${_activeTab}_${item.name}_$index'),
                     width: cardWidth,
                     child: Padding(
                       padding: EdgeInsets.only(
@@ -122,7 +128,7 @@ class _TopProfessionalsSectionState
                         right: index == activeList.length - 1 ? 0 : 8,
                       ),
                       child: _buildProfessionalCard(
-                        activeList[index],
+                        item,
                         index: index,
                       ),
                     ),
@@ -322,6 +328,10 @@ class _TopProfessionalsSectionState
               ),
               child: imageUrl.isNotEmpty
                   ? S3Image(
+                      // Unique key per tab+imageUrl ensures Flutter creates
+                      // a brand-new S3Image (with fresh _resolvedUrl state)
+                      // when switching between Agents and Lenders tabs.
+                      key: ValueKey('${_activeTab}_$imageUrl'),
                       imageUrl: imageUrl,
                       width: double.infinity,
                       height: 226,

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

@@ -135,9 +135,9 @@ class Conversation {
       createdAt: json['createdAt'] as String,
       updatedAt: json['updatedAt'] as String,
       otherParty:
-          OtherParty.fromJson(json['otherParty'] as Map<String, dynamic>),
+          OtherParty.fromJson(MessageSender._safeMap(json['otherParty'])),
       messages: (json['messages'] as List<dynamic>?)
-          ?.map((e) => ChatMessage.fromJson(e as Map<String, dynamic>))
+          ?.map((e) => ChatMessage.fromJson(MessageSender._safeMap(e)))
           .toList(),
     );
   }