feat(knowledge): 初步完成知识库分片预览

service-ai/service-ai-knowledge/src/main/resources/config/flow.xml

@@ -1,14 +1,20 @@
 <?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE flow PUBLIC  "liteflow" "https://liteflow.cc/liteflow.dtd">
 <flow>
-    <chain name="embedding">
+    <chain id="embedding">
         SER(
-            embedding_start,
-            SWITCH(embedding_mode_switch).TO(
-                normal_embedding,
-                llm_embedding,
-                qa_embedding
+            IF(
+                embedding_check_if_file_needed,
+                SWITCH(file_reader_switch).TO(
+                    txt_file_reader,
+                    pdf_file_reader
+                ).DEFAULT(any_file_reader)
             ),
-            embedding_finish
-        );
+            SWITCH(split_switch).TO(
+                normal_split,
+                llm_split,
+                qa_split
+            )
+        )
     </chain>
 </flow>