refactor(config): retire RuntimeSettingsCompat host usage

tests/test_agent_task_runs.py

@@ -365,7 +365,15 @@ async def test_query_task_returns_owner_scoped_ten_recent_runs(monkeypatch) -> N
 @pytest.mark.anyio
 async def test_agent_manager_records_manual_trigger_source(monkeypatch) -> None:
     """真实执行入口应把手动触发来源写入对应 run。"""
-    monkeypatch.setattr("app.agent.orchestrator.settings.AI_AGENT_ENABLE", True)
+    from app.agent import orchestrator
+    from app.runtime.config import settings
+
+    monkeypatch.setattr(settings, "AI_AGENT_ENABLE", True)
+    monkeypatch.setattr(
+        orchestrator,
+        "get_runtime_setting",
+        lambda key, default=None: getattr(settings, key, default),
+    )
     task = _add_task("run-manager")
     manager = AgentManager()
     captured = {}