refactor: 重构文档处理流程和任务管理

consts/public/table_name.go

@@ -1,5 +1,6 @@
 package public
 
+// 数据库名称
 const (
 	DbNameKnowledge = "rag_knowledge"
 	DbNameVector    = "rag_vector"
@@ -10,6 +11,7 @@ const (
 	TableNameDocument      = "document"
 	TableNameDataset       = "dataset"
 	TableNameKeyword       = "keyword"
+	TableNameTask          = "task"
 	TableNameDatasetIndex  = "dataset_index"
 	TableNameDocumentChunk = "document_chunk"
 )