调整标注中心导入文件命名

backend/app/services/annotation_platform_service.py

@@ -258,12 +258,10 @@ async def import_project_dataset(
     upload_dir = settings.uploads_dir
     upload_dir.mkdir(parents=True, exist_ok=True)
 
-    safe_name = f"{project_name or project_id}_{file_name}" if project_name else file_name
-    # 清理文件名中的非法字符
-    safe_name = "".join(c if c.isalnum() or c in "._-" else "_" for c in safe_name)
-    file_path = upload_dir / safe_name
+    safe_name = "".join(c if c.isalnum() or c in "._-" else "_" for c in (project_name or project_id))
+    file_path = upload_dir / f"{safe_name}.jsonl"
     if file_path.exists():
-        file_path = upload_dir / f"{uuid.uuid4().hex[:8]}_{safe_name}"
+        file_path = upload_dir / f"{uuid.uuid4().hex[:8]}_{safe_name}.jsonl"
 
     file_path.write_bytes(file_content)
 
@@ -275,7 +273,7 @@ async def import_project_dataset(
     record_id = str(uuid.uuid4())
     record = DatasetRecord(
         id=record_id,
-        name=jsonl_path.name,
+        name=project_name or project_id,
         format="jsonl",
         record_count=record_count,
         file_path=str(jsonl_path),