diff --git a/pipeline_service/sdlc_ability.py b/pipeline_service/sdlc_ability.py
index b33e3fd..110ef66 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)——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_projects", description="列出项目列表(含状态)——严格产线隔离，只列当前产线的项目", parameters={"status": "按状态筛选(可选)"}, 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"),
@@ -1091,14 +1091,12 @@ async def _h_list_projects(sor, p, ctx):
         if _u:
             org_id = getattr(_u[0], "orgid", "") or ""
     status = (p.get("status", "") or "").strip()
-    # 产线隔离：真实产线会话（space≠general）只列本产线项目——
+    # 产线隔离（强制）：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
+    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: