diff --git a/pipeline_service/agent_loop_v2.py b/pipeline_service/agent_loop_v2.py
index 9d639af..7bb768f 100644
--- a/pipeline_service/agent_loop_v2.py
+++ b/pipeline_service/agent_loop_v2.py
@@ -692,6 +692,7 @@ class AgentExecutor:
             "project_id": self.project_id,
             "user_id": self.user_id,
             "pipeline_id": self.pipeline_id,
+            "space": self.space,
             "workspace_dir": self.workspace_dir,
             "model_name": self.model_name,
             "config": self.config,
diff --git a/pipeline_service/project_capability.py b/pipeline_service/project_capability.py
index d1f2174..3da2f32 100644
--- a/pipeline_service/project_capability.py
+++ b/pipeline_service/project_capability.py
@@ -233,8 +233,12 @@ async def set_project_state(project_id, from_state, to_state,
                              who=who, agent_id=agent_id, detail=detail)
 
 
-async def list_projects(org_id=None, status=None, limit=50) -> list:
-    """列出项目（可按组织/状态过滤；org_id 空则列全部）。"""
+async def list_projects(org_id=None, status=None, pipeline_id=None, limit=50) -> list:
+    """列出项目（可按组织/状态/产线过滤；org_id 空则列全部）。
+
+    产线隔离：传 pipeline_id 时只列该产线的项目（投标/商机等产线会话
+    不串到开发产线项目）。不传则不按产线过滤。
+    """
     db, dbname = _get_db()
     async with db.sqlorContext(dbname) as sor:
         conditions = ["1=1"]
@@ -245,6 +249,9 @@ async def list_projects(org_id=None, status=None, limit=50) -> list:
         if status:
             conditions.append("status=${status}$")
             params["status"] = status
+        if pipeline_id:
+            conditions.append("pipeline_id=${pl}$")
+            params["pl"] = pipeline_id
         where = " AND ".join(conditions)
         try:
             limit = int(limit)
diff --git a/pipeline_service/sdlc_ability.py b/pipeline_service/sdlc_ability.py
index 3831e45..b33e3fd 100644
--- a/pipeline_service/sdlc_ability.py
+++ b/pipeline_service/sdlc_ability.py
@@ -177,7 +177,7 @@ SDL_TOOLS = [
         category="feature",
     ),
     # ── 项目生命周期 ──
-    ToolDefinition(name="list_projects", description="列出项目列表(含状态)", parameters={"status": "按状态筛选(可选)"}, category="project"),
+    ToolDefinition(name="list_projects", description="列出项目列表(含状态)——按当前产线隔离，产线会话只见本产线项目；传 all=true 跨产线看全部", parameters={"status": "按状态筛选(可选)", "all": "true=跨产线列全部项目(默认只列本产线)"}, category="project"),
     ToolDefinition(name="list_role_models", description="列出项目各角色的模型配置(缺省用项目缺省模型)", parameters={"project_id": "项目ID"}, category="project"),
     ToolDefinition(name="set_role_model", description="设置某角色的模型(如 deploy_test 用 qwen3.8-max；model_name 空=清除回退缺省)", parameters={"project_id": "项目ID", "role": "角色名(agent.develop/agent.deploy_test等)", "model_name": "模型名(llm.name，空=回退缺省)"}, category="project"),
     ToolDefinition(name="start_project", description="启动项目(draft/archived→active)", parameters={"project_id": "项目ID"}, category="project"),
@@ -1091,7 +1091,16 @@ async def _h_list_projects(sor, p, ctx):
         if _u:
             org_id = getattr(_u[0], "orgid", "") or ""
     status = (p.get("status", "") or "").strip()
-    lst = await list_projects(org_id=org_id or None, status=status or None)
+    # 产线隔离：真实产线会话（space≠general）只列本产线项目——
+    # 投标/商机产线不串出开发产线的项目。通用助手会话不过滤。
+    # 用户明确要跨产线看全部时传 all=true。
+    pipeline_filter = None
+    if (p.get("all", "") or "").strip().lower() not in ("true", "1", "yes"):
+        space = ctx.get("space", "") or ""
+        if space and space != "general":
+            pipeline_filter = space
+    lst = await list_projects(org_id=org_id or None, status=status or None,
+                              pipeline_id=pipeline_filter)
     if not lst:
         return "暂无项目"
     lines = []