新功能开发的子流程入口，把"加个 X 能力"从想法走到验收闭环。触发：用户说"做新功能"、"加个 X"、"实现 XX"。只做路由，根据已有产物决定走 brainstorm / design / fastforward / implement / acceptance。不处理 bug。
This skill does not declare a tool allowlist. The agent host applies whatever default tools are available at runtime.
SKILL.md / Manifest
https://raw.githubusercontent.com/liuzhengdongfortest/codestable/main/cs-feat/SKILL.mdRegistry
github (via claudemarketplaces.com)