Hello is the smallest useful Baton PluginPackage. Version 0.1.0 intentionally
registers no Command or Controller and accesses no external system; it exists to verify
the real Marketplace discovery, immutable installation, and Package loading
path before later examples introduce host behavior.
pluginId: compforge/hello
version: 0.1.0
Add this repository as a Baton Marketplace, then open /plugins to discover,
inspect, and install Hello.
Hello 是最小可用的 Baton PluginPackage。0.1.0 有意不注册 Command 或 Controller，也不访问外部系统；
它只验证真实的 Marketplace 发现、不可变安装和 Package 加载链路。后续版本再逐步加入运行时行为。