refactor: centralize conversation cache management

- Introduced a new method `refreshConversationsCache` to streamline the invalidation of the conversations provider and optionally the folders provider.
- Updated various components to utilize the new cache management method, enhancing code clarity and reducing redundancy.
- This refactor improves the efficiency of conversation and folder synchronization across the application.

lib/core/providers/app_providers.dart

@@ -661,6 +661,17 @@ class _ConversationsCacheTimestamp extends _$ConversationsCacheTimestamp {
   void set(DateTime? timestamp) => state = timestamp;
 }
 
+/// Clears the in-memory timestamp cache and invalidates the conversations
+/// provider so the next read forces a refetch. Optionally invalidates the
+/// folders provider when folder metadata must stay in sync with conversations.
+void refreshConversationsCache(dynamic ref, {bool includeFolders = false}) {
+  ref.read(_conversationsCacheTimestampProvider.notifier).set(null);
+  ref.invalidate(conversationsProvider);
+  if (includeFolders) {
+    ref.invalidate(foldersProvider);
+  }
+}
+
 // Conversation providers - Now using correct OpenWebUI API with caching
 // keepAlive to maintain cache during authenticated session
 @Riverpod(keepAlive: true)

lib/core/providers/app_startup_providers.dart

@@ -103,7 +103,7 @@ void _scheduleConversationWarmup(Ref ref, {bool force = false}) {
         return;
       }
       if (existing.hasError) {
-        ref.invalidate(conversationsProvider);
+        refreshConversationsCache(ref);
       }
       final conversations = await ref.read(conversationsProvider.future);
       statusController.set(_ConversationWarmupStatus.complete);
@@ -368,7 +368,7 @@ class _ForegroundRefreshObserver extends WidgetsBindingObserver {
       // Schedule to avoid side-effects during build frames
       Future.microtask(() {
         try {
-          _ref.invalidate(conversationsProvider);
+          refreshConversationsCache(_ref);
           _ref
               .read(_conversationWarmupStatusProvider.notifier)
               .set(_ConversationWarmupStatus.idle);

lib/features/chat/providers/chat_providers.dart

@@ -647,7 +647,7 @@ class ChatMessagesNotifier extends Notifier<List<ChatMessage>> {
     // can pick up updated titles and ordering once streaming completes.
     // Best-effort: ignore if ref lifecycle/context prevents invalidation.
     try {
-      ref.invalidate(conversationsProvider);
+      refreshConversationsCache(ref);
     } catch (_) {}
   }
 }
@@ -1373,10 +1373,10 @@ Future<void> regenerateMessage(
               .read(activeConversationProvider.notifier)
               .set(active.copyWith(title: newTitle));
         }
-        ref.invalidate(conversationsProvider);
+        refreshConversationsCache(ref);
       },
       onChatTagsUpdated: () {
-        ref.invalidate(conversationsProvider);
+        refreshConversationsCache(ref);
         final active = ref.read(activeConversationProvider);
         final api = ref.read(apiServiceProvider);
         if (active != null && api != null) {
@@ -1523,7 +1523,7 @@ Future<void> _sendMessageInternal(
           try {
             // Guard against using ref after widget disposal
             if (ref.mounted == true) {
-              ref.invalidate(conversationsProvider);
+              refreshConversationsCache(ref);
             }
           } catch (_) {
             // If ref doesn't support mounted or is disposed, skip
@@ -1920,10 +1920,10 @@ Future<void> _sendMessageInternal(
               .read(activeConversationProvider.notifier)
               .set(active.copyWith(title: newTitle));
         }
-        ref.invalidate(conversationsProvider);
+        refreshConversationsCache(ref);
       },
       onChatTagsUpdated: () {
-        ref.invalidate(conversationsProvider);
+        refreshConversationsCache(ref);
         final active = ref.read(activeConversationProvider);
         final api = ref.read(apiServiceProvider);
         if (active != null && api != null) {
@@ -2057,7 +2057,7 @@ Future<void> _saveConversationLocally(dynamic ref) async {
 
     await storage.setString('conversations', jsonEncode(conversations));
     ref.read(activeConversationProvider.notifier).set(updatedConversation);
-    ref.invalidate(conversationsProvider);
+    refreshConversationsCache(ref);
   } catch (e) {
     // Handle local storage errors silently
   }
@@ -2095,7 +2095,7 @@ Future<void> pinConversation(
     await api.pinConversation(conversationId, pinned);
 
     // Refresh conversations list to reflect the change
-    ref.invalidate(conversationsProvider);
+    refreshConversationsCache(ref);
 
     // Update active conversation if it's the one being pinned
     final activeConversation = ref.read(activeConversationProvider);
@@ -2134,7 +2134,7 @@ Future<void> archiveConversation(
     await api.archiveConversation(conversationId, archived);
 
     // Refresh conversations list to reflect the change
-    ref.invalidate(conversationsProvider);
+    refreshConversationsCache(ref);
   } catch (e) {
     DebugLogger.log(
       'Error ${archived ? 'archiving' : 'unarchiving'} conversation: $e',
@@ -2160,7 +2160,7 @@ Future<String?> shareConversation(WidgetRef ref, String conversationId) async {
     final shareId = await api.shareConversation(conversationId);
 
     // Refresh conversations list to reflect the change
-    ref.invalidate(conversationsProvider);
+    refreshConversationsCache(ref);
 
     return shareId;
   } catch (e) {
@@ -2183,7 +2183,7 @@ Future<void> cloneConversation(WidgetRef ref, String conversationId) async {
     // The ChatMessagesNotifier will automatically load messages when activeConversation changes
 
     // Refresh conversations list to show the new conversation
-    ref.invalidate(conversationsProvider);
+    refreshConversationsCache(ref);
   } catch (e) {
     DebugLogger.log('Error cloning conversation: $e', scope: 'chat/providers');
     rethrow;

lib/features/chat/views/chat_page.dart

@@ -236,7 +236,7 @@ class _ChatPageState extends ConsumerState<ChatPage> {
 
     // Force refresh conversations provider to ensure we get the demo conversations
     if (!mounted) return;
-    ref.invalidate(conversationsProvider);
+    refreshConversationsCache(ref);
 
     // Try to load demo conversation
     for (int i = 0; i < 10; i++) {
@@ -1486,7 +1486,7 @@ class _ChatPageState extends ConsumerState<ChatPage> {
                           // Also refresh the conversations list to reconcile missed events
                           // and keep timestamps/order in sync with the server.
                           try {
-                            ref.invalidate(conversationsProvider);
+                            refreshConversationsCache(ref);
                             // Best-effort await to stabilize UI; ignore errors.
                             await ref.read(conversationsProvider.future);
                           } catch (_) {}

lib/features/chat/widgets/modern_chat_input.dart

@@ -1112,7 +1112,7 @@ class _ModernChatInputState extends ConsumerState<ModernChatInput>
       activeColor = null;
     }
 
-    const double iconSize = IconSize.xl;
+    const double iconSize = IconSize.large;
 
     final Color iconColor = !enabled
         ? context.conduitTheme.textPrimary.withValues(alpha: Alpha.disabled)

lib/features/navigation/widgets/chats_drawer.dart

@@ -11,7 +11,7 @@ import '../../../core/providers/app_providers.dart';
 import '../../../shared/theme/theme_extensions.dart';
 import '../../chat/providers/chat_providers.dart' as chat;
 // import '../../files/views/files_page.dart';
-import '../../../shared/utils/ui_utils.dart';
+import '../../../core/utils/debug_logger.dart';
 import '../../../core/services/navigation_service.dart';
 import '../../../shared/widgets/themed_dialogs.dart';
 import 'package:conduit/l10n/app_localizations.dart';
@@ -55,12 +55,11 @@ class _ChatsDrawerState extends ConsumerState<ChatsDrawer> {
 
   Future<void> _refreshChats() async {
     try {
-      // Always refresh folders
+      // Always refresh folders and conversations cache
-      ref.invalidate(foldersProvider);
+      refreshConversationsCache(ref, includeFolders: true);
 
       if (_query.trim().isEmpty) {
         // Refresh main conversations list
-        ref.invalidate(conversationsProvider);
         try {
           await ref.read(conversationsProvider.future);
         } catch (_) {}
@@ -629,15 +628,17 @@ class _ChatsDrawerState extends ConsumerState<ChatsDrawer> {
       if (api == null) throw Exception('No API service');
       await api.createFolder(name: name);
       HapticFeedback.lightImpact();
-      ref.invalidate(foldersProvider);
+      refreshConversationsCache(ref, includeFolders: true);
+    } catch (e, stackTrace) {
       if (!mounted) return;
-      UiUtils.showMessage(context, AppLocalizations.of(context)!.folderCreated);
+      DebugLogger.error(
-    } catch (e) {
+        'create-folder-failed',
-      if (!mounted) return;
+        scope: 'drawer',
-      UiUtils.showMessage(
+        error: e,
-        context,
+        stackTrace: stackTrace,
+      );
+      await _showDrawerError(
         AppLocalizations.of(context)!.failedToCreateFolder,
-        isError: true,
       );
     }
   }
@@ -668,22 +669,17 @@ class _ChatsDrawerState extends ConsumerState<ChatsDrawer> {
           if (api == null) throw Exception('No API service');
           await api.moveConversationToFolder(details.data.id, folderId);
           HapticFeedback.selectionClick();
-          ref.invalidate(conversationsProvider);
+          refreshConversationsCache(ref, includeFolders: true);
-          ref.invalidate(foldersProvider);
+        } catch (e, stackTrace) {
+          DebugLogger.error(
+            'move-conversation-failed',
+            scope: 'drawer',
+            error: e,
+            stackTrace: stackTrace,
+          );
           if (mounted) {
-            UiUtils.showMessage(
+            await _showDrawerError(
-              context,
-              AppLocalizations.of(
-                context,
-              )!.movedChatToFolder(details.data.title, name),
-            );
-          }
-        } catch (_) {
-          if (mounted) {
-            UiUtils.showMessage(
-              context,
               AppLocalizations.of(context)!.failedToMoveChat,
-              isError: true,
             );
           }
         }
@@ -868,6 +864,28 @@ class _ChatsDrawerState extends ConsumerState<ChatsDrawer> {
     return null;
   }
 
+  Future<void> _showDrawerError(String message) async {
+    if (!mounted) return;
+    final l10n = AppLocalizations.of(context)!;
+    final theme = context.conduitTheme;
+    await ThemedDialogs.show<void>(
+      context,
+      title: l10n.errorMessage,
+      content: Text(
+        message,
+        style: AppTypography.bodyMediumStyle.copyWith(
+          color: theme.textSecondary,
+        ),
+      ),
+      actions: [
+        TextButton(
+          onPressed: () => Navigator.of(context).pop(),
+          child: Text(l10n.ok),
+        ),
+      ],
+    );
+  }
+
   void _showFolderContextMenu(
     BuildContext context,
     String folderId,
@@ -923,14 +941,16 @@ class _ChatsDrawerState extends ConsumerState<ChatsDrawer> {
       if (api == null) throw Exception('No API service');
       await api.updateFolder(folderId, name: newName);
       HapticFeedback.selectionClick();
-      ref.invalidate(foldersProvider);
+      refreshConversationsCache(ref, includeFolders: true);
-    } catch (_) {
+    } catch (e, stackTrace) {
       if (!mounted) return;
-      UiUtils.showMessage(
+      DebugLogger.error(
-        this.context,
+        'rename-folder-failed',
-        'Failed to rename folder',
+        scope: 'drawer',
-        isError: true,
+        error: e,
+        stackTrace: stackTrace,
       );
+      await _showDrawerError('Failed to rename folder');
     }
   }
 
@@ -956,11 +976,16 @@ class _ChatsDrawerState extends ConsumerState<ChatsDrawer> {
       if (api == null) throw Exception('No API service');
       await api.deleteFolder(folderId);
       HapticFeedback.mediumImpact();
-      ref.invalidate(foldersProvider);
+      refreshConversationsCache(ref, includeFolders: true);
-      ref.invalidate(conversationsProvider);
+    } catch (e, stackTrace) {
-    } catch (_) {
       if (!mounted) return;
-      UiUtils.showMessage(this.context, deleteFolderError, isError: true);
+      DebugLogger.error(
+        'delete-folder-failed',
+        scope: 'drawer',
+        error: e,
+        stackTrace: stackTrace,
+      );
+      await _showDrawerError(deleteFolderError);
     }
   }
 
@@ -984,17 +1009,16 @@ class _ChatsDrawerState extends ConsumerState<ChatsDrawer> {
           if (api == null) throw Exception('No API service');
           await api.moveConversationToFolder(details.data.id, null);
           HapticFeedback.selectionClick();
-          ref.invalidate(conversationsProvider);
+          refreshConversationsCache(ref, includeFolders: true);
-          ref.invalidate(foldersProvider);
+        } catch (e, stackTrace) {
+          DebugLogger.error(
+            'unfile-conversation-failed',
+            scope: 'drawer',
+            error: e,
+            stackTrace: stackTrace,
+          );
           if (mounted) {
-            UiUtils.showMessage(
+            await _showDrawerError(l10n.failedToMoveChat);
-              context,
-              'Removed "${details.data.title}" from folder',
-            );
-          }
-        } catch (_) {
-          if (mounted) {
-            UiUtils.showMessage(context, l10n.failedToMoveChat, isError: true);
           }
         }
       },

lib/shared/utils/conversation_context_menu.dart

@@ -3,7 +3,6 @@ import 'dart:io' show Platform;
 import 'package:conduit/core/providers/app_providers.dart';
 import 'package:conduit/l10n/app_localizations.dart';
 import 'package:conduit/shared/theme/theme_extensions.dart';
-import 'package:conduit/shared/utils/ui_utils.dart';
 import 'package:conduit/shared/widgets/conduit_components.dart';
 import 'package:conduit/shared/widgets/modal_safe_area.dart';
 import 'package:conduit/shared/widgets/sheet_handle.dart';
@@ -123,7 +122,7 @@ Future<void> showConversationContextMenu({
       await chat.pinConversation(ref, conversation.id, !isPinned);
     } catch (_) {
       if (!context.mounted) return;
-      UiUtils.showMessage(context, errorMessage, isError: true);
+      await _showConversationError(context, errorMessage);
     }
   }
 
@@ -133,7 +132,7 @@ Future<void> showConversationContextMenu({
       await chat.archiveConversation(ref, conversation.id, !isArchived);
     } catch (_) {
       if (!context.mounted) return;
-      UiUtils.showMessage(context, errorMessage, isError: true);
+      await _showConversationError(context, errorMessage);
     }
   }
 
@@ -221,7 +220,7 @@ Future<void> _renameConversation(
     if (api == null) throw Exception('No API service');
     await api.updateConversation(conversationId, title: newName);
     HapticFeedback.selectionClick();
-    ref.invalidate(conversationsProvider);
+    refreshConversationsCache(ref);
     final active = ref.read(activeConversationProvider);
     if (active?.id == conversationId) {
       ref
@@ -230,7 +229,7 @@ Future<void> _renameConversation(
     }
   } catch (_) {
     if (!context.mounted) return;
-    UiUtils.showMessage(context, renameError, isError: true);
+    await _showConversationError(context, renameError);
   }
 }
 
@@ -262,9 +261,29 @@ Future<void> _confirmAndDeleteConversation(
       ref.read(activeConversationProvider.notifier).clear();
       ref.read(chat.chatMessagesProvider.notifier).clearMessages();
     }
-    ref.invalidate(conversationsProvider);
+    refreshConversationsCache(ref);
   } catch (_) {
     if (!context.mounted) return;
-    UiUtils.showMessage(context, deleteError, isError: true);
+    await _showConversationError(context, deleteError);
   }
 }
+
+Future<void> _showConversationError(
+  BuildContext context,
+  String message,
+) async {
+  if (!context.mounted) return;
+  final l10n = AppLocalizations.of(context)!;
+  final theme = context.conduitTheme;
+  await ThemedDialogs.show<void>(
+    context,
+    title: l10n.errorMessage,
+    content: Text(message, style: TextStyle(color: theme.textSecondary)),
+    actions: [
+      TextButton(
+        onPressed: () => Navigator.of(context).pop(),
+        child: Text(l10n.ok),
+      ),
+    ],
+  );
+}