Implement Protocol Wrapper to package inflated components into A2UI messages

Develop the utility that converts inflated UI structures into valid, deliverable A2UI protocol messages.

Proposed tasks:
- [ ] Implement a wrapper that takes the output of the Inflation Engine and packages it into standard `createSurface` or `surfaceUpdate` envelopes.
- [ ] Ensure the wrapper correctly identifies the root component and handles surfaceId management.
- [ ] Validate the final output is compliant to the basic catalog to ensure the client-side renderer can process it without errors.

查找 Inflation Engine 的输出格式和 A2UI 协议消息定义，它们可能位于 protocol 或 types 目录中。wrapper 必须生成 `createSurface` 或 `surfaceUpdate` 信封；先检查现有的消息序列化。根据基本的 catalog schema 进行验证，以确保客户端兼容性。

由索引模型根据 Issue 内容生成。