fix: 修复 answer_question/add_bug/list_questions/diagnose 的 DB 列名错误

- answer_question: answered=1 → status='answered'（表无answered列）
- list_questions: answered IS NULL → status='pending'
- diagnose_project: 问题计数 answered IS NULL → status='pending'
- add_bug: 补 iteration_id（查项目默认迭代）

pipeline_service/agent_loop_v2.py

@@ -757,11 +757,11 @@ class AgentExecutor:
         review = await sor.sqlExe(
             "SELECT COUNT(*) as c FROM pipeline_tasks WHERE tenant_id=${pid}$ AND state='review'",
             {"pid": pid})
-        # questions 表可能没有 answered 列，用 try/except 兜底
+        # questions 表可能没有 answered 列，用 status='pending' 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",
+                "SELECT COUNT(*) as c FROM pipeline_agent_questions WHERE tenant_id=${pid}$ AND status='pending'",
                 {"pid": pid})
             qc = getattr(questions[0], "c", 0) if questions else 0
         except Exception:
@@ -844,10 +844,10 @@ class AgentExecutor:
         try:
             recs = await sor.sqlExe(
                 "SELECT id, question, answer_source FROM pipeline_agent_questions "
-                "WHERE tenant_id=${pid}$ AND answered IS NULL ORDER BY created_at DESC LIMIT 10",
+                "WHERE tenant_id=${pid}$ AND status='pending' ORDER BY created_at DESC LIMIT 10",
                 {"pid": pid})
         except Exception:
-            # 兼容无 answered 列的情况
+            # 兼容无 status 列的情况
             try:
                 recs = await sor.sqlExe(
                     "SELECT id, question, answer_source FROM pipeline_agent_questions "
@@ -881,7 +881,7 @@ class AgentExecutor:
         qid = getattr(recs[0], "id", qid)
 
         await sor.sqlExe(
-            "UPDATE pipeline_agent_questions SET answered=1, answer=${a}$ WHERE id=${qid}$",
+            "UPDATE pipeline_agent_questions SET answer=${a}$, status='answered' WHERE id=${qid}$",
             {"a": answer, "qid": qid})
         return "OK: 已回答"
 
@@ -962,10 +962,21 @@ class AgentExecutor:
         if not title:
             return "需要Bug标题"
 
+        # 找项目的迭代（iteration_id 必填）
+        iteration_id = p.get("iteration_id", "")
+        if not iteration_id:
+            its = await sor.sqlExe(
+                "SELECT id FROM sd_iterations WHERE project_id=${pid}$ ORDER BY created_at ASC LIMIT 1",
+                {"pid": pid})
+            if its:
+                iteration_id = getattr(its[0], "id", "")
+        if not iteration_id:
+            return "ERROR: 项目无迭代，无法提交Bug"
+
         await sor.C("sd_bugs", {
             "id": getID(), "title": title,
             "description": desc, "severity": severity,
-            "status": "open",
+            "status": "open", "iteration_id": iteration_id,
         })
         return f"OK: 已提交Bug: {title}"