fix(insights): persist token usage for non-CLI sessions

tests/gateway/test_status_command.py

@@ -126,15 +126,5 @@ async def test_handle_message_persists_agent_token_counts(monkeypatch):
     assert result == "ok"
     runner.session_store.update_session.assert_called_once_with(
         session_entry.session_key,
-        input_tokens=120,
-        output_tokens=45,
-        cache_read_tokens=0,
-        cache_write_tokens=0,
         last_prompt_tokens=80,
-        model="openai/test-model",
-        estimated_cost_usd=None,
-        cost_status=None,
-        cost_source=None,
-        provider=None,
-        base_url=None,
     )