diff --git a/wwwroot/api/workspace_files.dspy b/wwwroot/api/workspace_files.dspy
index b5f145b..24ea32b 100644
--- a/wwwroot/api/workspace_files.dspy
+++ b/wwwroot/api/workspace_files.dspy
@@ -42,7 +42,16 @@ full_dir = resolve_workspace_path(project_dir, space_dir, folder_id)
 if not os.path.isdir(full_dir):
     return {"widgettype": "Text", "options": {"otext": "目录不可用: ${p0}", "text": "目录不可用: ${p0}", "i18n": True, "i18n_params": {"p0": str(folder_id)}, "cfontsize": 0.9}}
 
-upload_url = entire_url("/pipeline-sdlc/api/workspace_upload.dspy") + (("?session_id=" + session_id) if session_id else "")
+# 上传端点必须与列表端点同参数：session_id + pipeline_id 都要透传。
+# 只传 session_id 的旧代码在通用助手（pipeline_id=_generic、无 session_id）下
+# 让 workspace_upload.dspy 走不到 _generic 分支，解析到别的项目目录 →
+# 上传报「目标目录不存在」（2026-09-17 实测根因）。
+_uq = []
+if session_id:
+    _uq.append("session_id=" + session_id)
+if pipeline_id:
+    _uq.append("pipeline_id=" + pipeline_id)
+upload_url = entire_url("/pipeline-sdlc/api/workspace_upload.dspy") + (("?" + "&".join(_uq)) if _uq else "")
 
 # 拖拽上传脚本：读取文件 → base64 → form-encoded POST → 刷新浏览器
 upload_script = (