feat: update file deletion logic to accept multiple file IDs (#53)

* feat: update file deletion logic to accept multiple file IDs

backend/services/rag-indexer-service/src/main/java/com/datamate/rag/indexer/application/KnowledgeBaseService.java

@@ -108,7 +108,8 @@ public class KnowledgeBaseService {
         return PagedResponse.of(page.getRecords(), page.getCurrent(), page.getTotal(), page.getPages());
     }
 
-    public void deleteFile(String knowledgeBaseId, DeleteFilesReq request) {
+    public void deleteFiles(String knowledgeBaseId, DeleteFilesReq request) {
+        ragFileRepository.removeByIds(request.getIds());
     }
 
     public PagedResponse<RagChunk> getChunks(String knowledgeBaseId, String ragFileId, PagingQuery pagingQuery) {

backend/services/rag-indexer-service/src/main/java/com/datamate/rag/indexer/interfaces/KnowledgeBaseController.java

@@ -113,7 +113,7 @@ public class KnowledgeBaseController {
     @DeleteMapping("/{knowledgeBaseId}/files")
     public void deleteFile(@PathVariable("knowledgeBaseId") String knowledgeBaseId,
                            @RequestBody DeleteFilesReq request) {
-        knowledgeBaseService.deleteFile(knowledgeBaseId, request);
+        knowledgeBaseService.deleteFiles(knowledgeBaseId, request);
     }
 
     /**

backend/services/rag-indexer-service/src/main/java/com/datamate/rag/indexer/interfaces/dto/DeleteFilesReq.java

@@ -1,5 +1,8 @@
 package com.datamate.rag.indexer.interfaces.dto;
 
+import lombok.Getter;
+import lombok.Setter;
+
 import java.util.List;
 
 /**
@@ -8,6 +11,11 @@ import java.util.List;
  * @author dallas
  * @since 2025-10-29
  */
+@Setter
+@Getter
 public class DeleteFilesReq {
-    private List<String> fileIds;
+    /**
+     * Rag文件表主键ID列表
+     */
+    private List<String> ids;
 }