完善 MCP/会话上下文治理并补齐搜索与诊断能力。

补充历史压缩与会话诊断链路，强化 tool pairing 与空响应兜底观测；完善 Admin MCP 导入/绑定与相关前端展示；新增 web_search_fast/web_fetch_clean 及多项测试与文档更新，并同步技能安装与角色绑定策略改进。

Made-with: Cursor

runtime/chat/tool_invocation_context.py

@@ -0,0 +1,45 @@
+from __future__ import annotations
+
+from contextlib import contextmanager
+from contextvars import ContextVar
+from typing import Iterator
+
+_tool_lane_owner: ContextVar[str | None] = ContextVar("tool_lane_owner", default=None)
+_tool_lane_session: ContextVar[str | None] = ContextVar("tool_lane_session", default=None)
+_tool_workspace_lane_role: ContextVar[str | None] = ContextVar("tool_workspace_lane_role", default=None)
+
+
+@contextmanager
+def tool_workspace_lane_scope(
+    *,
+    workspace_owner_session_id: str | None,
+    session_id: str | None,
+    workspace_lane_role: str | None = None,
+) -> Iterator[None]:
+    o = str(workspace_owner_session_id or "").strip() or None
+    s = str(session_id or "").strip() or None
+    r = str(workspace_lane_role or "").strip().lower() or None
+    t_o = _tool_lane_owner.set(o)
+    t_s = _tool_lane_session.set(s)
+    t_r = _tool_workspace_lane_role.set(r)
+    try:
+        yield
+    finally:
+        _tool_lane_owner.reset(t_o)
+        _tool_lane_session.reset(t_s)
+        _tool_workspace_lane_role.reset(t_r)
+
+
+def current_tool_lane_sessions() -> tuple[str | None, str | None]:
+    return _tool_lane_owner.get(), _tool_lane_session.get()
+
+
+def current_tool_workspace_lane_role() -> str | None:
+    return _tool_workspace_lane_role.get()
+
+
+__all__ = [
+    "current_tool_lane_sessions",
+    "current_tool_workspace_lane_role",
+    "tool_workspace_lane_scope",
+]