refactor(upload): 重构切片上传逻辑支持动态请求ID解析

- 移除预先批量获取reqId的方式，改为按需解析
- 新增resolveReqId函数支持动态获取请求ID
- 添加onReqIdResolved回调处理ID解析完成事件
- 改进文件按行切片上传，每行作为独立文件处理
- 优化空行跳过逻辑，统计跳过的空行数量
- 修复fileNo和chunkNo的对应关系
- 更新streamSplitAndUpload参数结构

frontend/src/hooks/useSliceUpload.tsx

@@ -251,18 +251,6 @@ export function useFileSliceUpload(
         const file = files[i];
         console.log(`[useSliceUpload] Processing file ${i + 1}/${files.length}: ${file.name}`);
         
-        // 为每个文件单独调用 preUpload，获取独立的 reqId
-        const { data: reqId } = await preUpload(task.key, {
-          totalFileNum: 1,
-          totalSize: file.size,
-          datasetId: task.key,
-          hasArchive: task.hasArchive,
-          prefix: task.prefix,
-        });
-        
-        console.log(`[useSliceUpload] File ${file.name} preUpload response reqId:`, reqId);
-        reqIds.push(reqId);
-        
         const result = await streamSplitAndUpload(
           file,
           (formData, config) => uploadChunk(task.key, formData, {
@@ -292,10 +280,21 @@ export function useFileSliceUpload(
               },
             };
             updateTaskList(updatedTask);
-          },
+          }, 
           1024 * 1024, // 1MB chunk size
           {
-            reqId,
+            resolveReqId: async ({ totalFileNum, totalSize }) => {
+              const { data: reqId } = await preUpload(task.key, {
+                totalFileNum,
+                totalSize,
+                datasetId: task.key,
+                hasArchive: task.hasArchive,
+                prefix: task.prefix,
+              });
+              console.log(`[useSliceUpload] File ${file.name} preUpload response reqId:`, reqId);
+              reqIds.push(reqId);
+              return reqId;
+            },
             hasArchive: newTask.hasArchive,
             prefix: newTask.prefix,
             signal: newTask.controller.signal,