diff --git a/pipeline_service/agent_loop_v2.py b/pipeline_service/agent_loop_v2.py
index e1b3f4c..22e4c98 100644
--- a/pipeline_service/agent_loop_v2.py
+++ b/pipeline_service/agent_loop_v2.py
@@ -1368,10 +1368,19 @@ class AgentExecutor:
         if not query:
             return "FAIL: 需要搜索关键词"
         try:
-            recs = await sor.sqlExe(
-                "SELECT role, content, created_at FROM pipeline_conversations "
-                "WHERE created_by=${u}$ AND iteration_id=${pid}$ AND content LIKE ${q}$ "
-                "ORDER BY created_at DESC LIMIT 10",
+            # 产线隔离（2026-09-05 第7层）：通用会话只搜自己的历史
+            # （pipeline_id=''），与 _load_history 过滤对称；产线会话按
+            # iteration_id（项目）过滤不变。
+            if self.generic:
+                sql = ("SELECT role, content, created_at FROM pipeline_conversations "
+                       "WHERE created_by=${u}$ AND (pipeline_id='' OR pipeline_id IS NULL) "
+                       "AND content LIKE ${q}$ "
+                       "ORDER BY created_at DESC LIMIT 10")
+            else:
+                sql = ("SELECT role, content, created_at FROM pipeline_conversations "
+                       "WHERE created_by=${u}$ AND iteration_id=${pid}$ AND content LIKE ${q}$ "
+                       "ORDER BY created_at DESC LIMIT 10")
+            recs = await sor.sqlExe(sql,
                 {"u": self.user_id, "pid": pid, "q": f"%{query}%"})
             if not recs:
                 return f"未找到包含 '{query}' 的会话记录"