Turns the messy context sitting in your head right after fixing a bug into searchable docs before you lose the thread. Runs parallel subagents to extract what you just did, cross-reference it against existing solutions, and write it to `docs/solutions/` with proper YAML frontmatter. The name comes from knowledge compounding: first time solving something costs hours, but document it and the next person (or you in three months) spends minutes. Supports both interactive and headless modes, so you can wire it into CI or post-merge hooks. Also maintains CONCEPTS.md as a side effect when domain terms surface, though bootstrapping that from scratch gets handed off to a separate refresh skill.
npx skills add https://github.com/everyinc/compound-engineering-plugin --skill ce-compound