{"direction": "to-copilot", "method": "session/new", "params": {"cwd": "<synthetic workspace>", "mcpServers": "<omitted>"}}
{"direction": "from-copilot", "id": 1073741825, "sessionId": "24b447c3-5837-44fe-86ce-9bdb3b8ac2a2", "configOptions": [{"id": "model", "currentValue": "Model A"}, {"id": "reasoning_effort", "currentValue": "medium"}]}
{"direction": "to-copilot", "method": "session/prompt", "sessionId": "24b447c3-5837-44fe-86ce-9bdb3b8ac2a2", "userText": "Reply with the single word OK."}
{"direction": "from-copilot", "method": "session/update", "sessionId": "24b447c3-5837-44fe-86ce-9bdb3b8ac2a2", "update": {"sessionUpdate": "config_option_update", "configOptions": [{"id": "model", "currentValue": "Model B"}, {"id": "reasoning_effort", "currentValue": "medium"}]}}