把"大到塞不进单个 feature"的需求做成完整事前规划：概设 + 接口契约 + 子 feature 拆解清单，放在 `.codestable/roadmap/{slug}/`。两种模式 new / update。触发：用户说"我想要一个 X 系统"、"帮我把这块需求拆一下"、"开一份 roadmap"，或 feature-design 阶段发现需求太大。
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-roadmap/SKILL.mdRegistry
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