Revert "feat: add scheduled instruction log cleanup via crontab hook"

src/Infrastructure/BotSharp.Abstraction/Repositories/IBotSharpRepository.cs

@@ -201,9 +201,6 @@ Task<DateTimePagination<ConversationStateLogModel>> GetConversationStateLogs(str
     #region Log Cleanup
     Task<int> DeleteOldConversationLogs(int retentionDays, int batchSize)
         => throw new NotImplementedException();
-
-    Task<int> DeleteOldInstructionLogs(int retentionDays, int batchSize)
-        => throw new NotImplementedException();
     #endregion
 
     #region Instruction Log

src/Infrastructure/BotSharp.Core/Repository/FileRepository/FileRepository.Log.cs

@@ -185,12 +185,6 @@ public async Task<int> DeleteOldConversationLogs(int retentionDays, int batchSiz
         // as it's typically used for local dev. Implementing it would require iterating all conversations.
         return await Task.FromResult(0);
     }
-
-    public async Task<int> DeleteOldInstructionLogs(int retentionDays, int batchSize = 2000)
-    {
-        // For file repository, keep the same cleanup behavior as conversation logs.
-        return await Task.FromResult(0);
-    }
     #endregion
 
     #region Instruction Log

src/Infrastructure/BotSharp.OpenAPI/BotSharpOpenApiExtensions.cs

@@ -238,10 +238,6 @@ public static IServiceCollection AddCrontabServices(this IServiceCollection serv
         services.AddScoped<ICrontabHook, ConversationLogCleanupCrontabHook>();
         services.AddScoped<ICrontabSource, ConversationLogCleanupRuleTrigger>();
         services.AddScoped<IRuleTrigger, ConversationLogCleanupRuleTrigger>();
-
-        services.AddScoped<ICrontabHook, InstructionLogCleanupCrontabHook>();
-        services.AddScoped<ICrontabSource, InstructionLogCleanupRuleTrigger>();
-        services.AddScoped<IRuleTrigger, InstructionLogCleanupRuleTrigger>();
         return services;
     }
 

src/Plugins/BotSharp.Plugin.MongoStorage/Repository/MongoRepository.Log.cs

@@ -168,23 +168,6 @@ public async Task<int> DeleteOldConversationLogs(int retentionDays, int batchSiz
 
         return (int)(contentDeletedCount + stateDeletedCount);
     }
-
-    public async Task<int> DeleteOldInstructionLogs(int retentionDays, int batchSize)
-    {
-        if (retentionDays <= 0) return 0;
-        var threshold = DateTime.UtcNow.AddDays(-retentionDays);
-
-        var filter = Builders<InstructionLogDocument>.Filter.Lt(x => x.CreatedTime, threshold);
-        var docsToDelete = await _dc.InstructionLogs.Find(filter).Limit(batchSize).Project(x => x.Id).ToListAsync();
-        if (!docsToDelete.Any())
-        {
-            return 0;
-        }
-
-        var deleteFilter = Builders<InstructionLogDocument>.Filter.In(x => x.Id, docsToDelete);
-        var deleted = await _dc.InstructionLogs.DeleteManyAsync(deleteFilter);
-        return (int)deleted.DeletedCount;
-    }
     #endregion
 
     #region Instruction Log