diff --git a/pipeline_service/agent_loop.py b/pipeline_service/agent_loop.py
index 8f528e3..d12a935 100644
--- a/pipeline_service/agent_loop.py
+++ b/pipeline_service/agent_loop.py
@@ -791,14 +791,18 @@ async def _get_project_repos(sor, project_id):
 
 
 async def _get_project_name(sor, project_id):
-    """查项目名（用于命名项目过程仓库 {项目名}_pc）。查不到返回空串。"""
+    """查项目目录名（英文 slug = directory_name 字段，查不到回退 name）。查不到返回空串。
+
+    新结构：项目目录名用英文 slug（[a-zA-Z0-9_]+），显示名（name，可中文）独立。
+    """
     try:
         r = await sor.sqlExe(
-            "SELECT name FROM sd_projects WHERE id=${pid}$ LIMIT 1",
+            "SELECT directory_name, name FROM sd_projects WHERE id=${pid}$ LIMIT 1",
             {"pid": project_id})
         await sor.sqlExe("COMMIT", {})
         if r:
-            return getattr(r[0], 'name', '') or ''
+            dn = getattr(r[0], 'directory_name', '') or ''
+            return dn or (getattr(r[0], 'name', '') or '')
     except Exception:
         pass
     return ''