fix: handle missing answered column in questions table

pipeline_service/agent_loop_v2.py

@@ -643,15 +643,20 @@ class AgentExecutor:
         review = await sor.sqlExe(
             "SELECT COUNT(*) as c FROM pipeline_tasks WHERE tenant_id=${pid}$ AND state='review'",
             {"pid": pid})
-        questions = await sor.sqlExe(
-            "SELECT COUNT(*) as c FROM pipeline_agent_questions WHERE tenant_id=${pid}$ AND answered IS NULL",
-            {"pid": pid})
+        # questions 表可能没有 answered 列，用 try/except 兜底
+        qc = 0
+        try:
+            questions = await sor.sqlExe(
+                "SELECT COUNT(*) as c FROM pipeline_agent_questions WHERE tenant_id=${pid}$ AND answered IS NULL",
+                {"pid": pid})
+            qc = getattr(questions[0], "c", 0) if questions else 0
+        except Exception:
+            pass
 
         sc = getattr(submitted[0], "c", 0) if submitted else 0
         rc = getattr(running[0], "c", 0) if running else 0
         fc = getattr(failed[0], "c", 0) if failed else 0
         vc = getattr(review[0], "c", 0) if review else 0
-        qc = getattr(questions[0], "c", 0) if questions else 0
 
         return (
             f"项目诊断:\n"