Feat：可折叠详情节点

### 功能描述

- **核心需求**：节点默认显示核心信息（如名称、状态），点击展开后显示详情（如日志、参数配置），避免画布信息过载。
- **示例思路**：
- 节点默认状态：显示 “任务 A（运行中）”；
- 点击节点右侧 “展开” 按钮，节点高度自动增加，下方显示详情面板（如 “参数：timeout=30s”“日志：2024-xx-xx 开始执行”）；

No implementation files, tests, or entry points are named in the issue. Start by locating the X6 entry point for node rendering and interaction, then determine how expanded content and automatic height changes are represented. Done means nodes show core information by default, expand on the specified control, and display the requested detail content.

Written by the indexing model from the issue text.