feat(annotation): 添加文本项目源文档过滤功能

- 在 EditorProjectInfo 中增加 datasetType 字段
- 移除前端硬编码的源文档扩展名列表
- 添加 isTextProject 判断逻辑
- 实现 prefetch 和 loadTasks 中的源文档排除参数
- 在后端接口中添加 excludeSourceDocuments 参数
- 实现源文档类型的数据库查询过滤逻辑
- 优化任务列表加载性能，避免不必要的源文档加载

frontend/src/pages/DataAnnotation/Annotate/LabelStudioTextEditor.tsx

@@ -13,6 +13,7 @@ import {
 type EditorProjectInfo = {
   projectId: string;
   datasetId: string;
+  datasetType?: string | null;
   templateId?: string | null;
   labelConfig?: string | null;
   supported: boolean;
@@ -87,7 +88,6 @@ type SwitchDecision = "save" | "discard" | "cancel";
 const LSF_IFRAME_SRC = "/lsf/lsf.html";
 const TASK_PAGE_START = 0;
 const TASK_PAGE_SIZE = 200;
-const SOURCE_DOCUMENT_EXTENSIONS = [".pdf", ".doc", ".docx"];
 
 type NormalizedTaskList = {
   items: EditorTaskListItem[];
@@ -167,20 +167,12 @@ const mergeTaskItems = (base: EditorTaskListItem[], next: EditorTaskListItem[])
   return merged;
 };
 
-const isSourceDocumentFile = (item: EditorTaskListItem) => {
-  const fileName = item.fileName?.toLowerCase() ?? "";
-  return SOURCE_DOCUMENT_EXTENSIONS.some((ext) => fileName.endsWith(ext));
-};
-
-const filterSourceDocumentTasks = (items: EditorTaskListItem[]) =>
-  items.filter((item) => !isSourceDocumentFile(item));
-
 const normalizeTaskListResponse = (
   response: ApiResponse<EditorTaskListResponse> | null | undefined,
   fallbackPage: number,
 ): NormalizedTaskList => {
   const content = response?.data?.content;
-  const items = filterSourceDocumentTasks(Array.isArray(content) ? content : []);
+  const items = Array.isArray(content) ? content : [];
   const size = response?.data?.size ?? TASK_PAGE_SIZE;
   const total = response?.data?.totalElements ?? items.length;
   const totalPages =
@@ -237,6 +229,10 @@ export default function LabelStudioTextEditor() {
   const [segmented, setSegmented] = useState(false);
   const [segments, setSegments] = useState<SegmentInfo[]>([]);
   const [currentSegmentIndex, setCurrentSegmentIndex] = useState(0);
+  const isTextProject = useMemo(
+    () => (project?.datasetType || "").toUpperCase() === "TEXT",
+    [project?.datasetType],
+  );
 
   const focusIframe = useCallback(() => {
     const iframe = iframeRef.current;
@@ -292,9 +288,13 @@ export default function LabelStudioTextEditor() {
       for (let page = startPage; page < totalPages; page += 1) {
         if (prefetchSeqRef.current !== seq) return;
         try {
-          const resp = (await listEditorTasksUsingGet(projectId, {
+          const params = {
             page,
             size: TASK_PAGE_SIZE,
+            ...(isTextProject ? { excludeSourceDocuments: true } : {}),
+          };
+          const resp = (await listEditorTasksUsingGet(projectId, {
+            ...params,
           })) as ApiResponse<EditorTaskListResponse>;
           const normalized = normalizeTaskListResponse(resp, page);
           setTasks((prev) => mergeTaskItems(prev, normalized.items));
@@ -311,7 +311,7 @@ export default function LabelStudioTextEditor() {
       }
     };
     void run();
-  }, [projectId]);
+  }, [isTextProject, projectId]);
 
   const loadTasks = useCallback(async (options?: {
     mode?: "reset" | "append";
@@ -334,9 +334,13 @@ export default function LabelStudioTextEditor() {
     }
     try {
       const nextPage = mode === "append" ? taskPage + 1 : TASK_PAGE_START;
-      const resp = (await listEditorTasksUsingGet(projectId, {
+      const params = {
         page: nextPage,
         size: TASK_PAGE_SIZE,
+        ...(isTextProject ? { excludeSourceDocuments: true } : {}),
+      };
+      const resp = (await listEditorTasksUsingGet(projectId, {
+        ...params,
       })) as ApiResponse<EditorTaskListResponse>;
       const normalized = normalizeTaskListResponse(resp, nextPage);
       if (mode === "append") {
@@ -366,7 +370,15 @@ export default function LabelStudioTextEditor() {
         setLoadingTasks(false);
       }
     }
-  }, [message, projectId, startPrefetchTasks, taskPage, taskTotalPages, updateTaskSelection]);
+  }, [
+    isTextProject,
+    message,
+    projectId,
+    startPrefetchTasks,
+    taskPage,
+    taskTotalPages,
+    updateTaskSelection,
+  ]);
 
   const initEditorForFile = useCallback(async (fileId: string, segmentIdx?: number) => {
     if (!project?.supported) return;