diff --git a/pipeline_service/agent_loop.py b/pipeline_service/agent_loop.py
index 29b7921..3f98bd2 100644
--- a/pipeline_service/agent_loop.py
+++ b/pipeline_service/agent_loop.py
@@ -409,6 +409,12 @@ async def role_agent_run(project_id, role, agent_id=None, model_name=None):
         params_str = getattr(task, "params", "{}") or "{}"
         workspace_dir = await _get_workspace_dir(sor, project_id)
 
+        # 提交 claim 事务，释放行锁
+        try:
+            await sor.sqlExe("COMMIT", {})
+        except Exception:
+            pass
+
         # 确保 repos 目录存在
         repos_dir = os.path.join(workspace_dir, 'repos')
         if not os.path.isdir(repos_dir):
@@ -530,6 +536,12 @@ async def pm_review_run(project_id, agent_id=None, model_name=None):
         task_role = _normalize_role(getattr(task, "role", "") or "")
         workspace_dir = await _get_workspace_dir(sor, project_id)
 
+        # 提交 claim 事务，释放行锁，避免后续长操作（LLM调用）阻塞其他写入
+        try:
+            await sor.sqlExe("COMMIT", {})
+        except Exception:
+            pass
+
         # 首次审核时，确保仓库已 clone
         repos = await _get_project_repos(sor, project_id)
         if repos: