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

tests/test_session_delete_cascade.py

@@ -0,0 +1,22 @@
+from __future__ import annotations
+
+from oclaw.platform.persistence.sqlite_store import SqliteStore
+
+
+def test_delete_session_cascades_chat_message_and_tool_log(tmp_path) -> None:  # noqa: ANN001
+    db = tmp_path / "ops.sqlite"
+    store = SqliteStore(str(db))
+    sess = store.create_session("t")
+    store.add_message(session_id=sess.id, role="user", content="hi", event_type="user_text")
+    store.add_tool_log(session_id=sess.id, tool_name="x", args={"a": 1}, result={"ok": True})
+
+    store.delete_session(sess.id)
+
+    with store._connect() as conn:  # noqa: SLF001
+        c1 = conn.execute("select count(1) from chat_message where session_id=?", (sess.id,)).fetchone()[0]
+        c2 = conn.execute("select count(1) from tool_log where session_id=?", (sess.id,)).fetchone()[0]
+        c3 = conn.execute("select count(1) from chat_session where id=?", (sess.id,)).fetchone()[0]
+    assert int(c3) == 0
+    assert int(c1) == 0
+    assert int(c2) == 0
+