refactor: pre seed responses

lib/shared/services/tasks/outbound_task.dart

@@ -74,17 +74,6 @@ abstract class OutboundTask with _$OutboundTask {
     String? error,
   }) = GenerateImageTask;
 
-  const factory OutboundTask.saveConversation({
-    required String id,
-    String? conversationId,
-    @Default(TaskStatus.queued) TaskStatus status,
-    @Default(0) int attempt,
-    String? idempotencyKey,
-    DateTime? enqueuedAt,
-    DateTime? startedAt,
-    DateTime? completedAt,
-    String? error,
-  }) = SaveConversationTask;
 
   const factory OutboundTask.generateTitle({
     required String id,
@@ -121,7 +110,6 @@ abstract class OutboundTask with _$OutboundTask {
         uploadMedia: (t) => t.conversationId,
         executeToolCall: (t) => t.conversationId,
         generateImage: (t) => t.conversationId,
-        saveConversation: (t) => t.conversationId,
         generateTitle: (t) => t.conversationId,
         imageToDataUrl: (t) => t.conversationId,
       );