What problem does it solve? Forks of an agent repository silently drift behind upstream as new skills ship, and operators have no visibility into which skills their fork never adopted. This Skill produces a weekly digest that surfaces per-fork skill gaps and fleet-wide adoption patterns. ## Core Features & Use Cases - Per-fork gap analysis: Compares each active fork's skills.json against the upstream manifest and reports missing slugs with category rollups. - Fleet-level rollup: Ranks forks by gap size, identifies universally unadopted upstream skills, and picks a one-line verdict (WIDE_GAP, BIG_FORK_GAP, NEW_UPSTREAM_UNCLAIMED, STEADY, COLD START). - Cohort reuse with fallback: Reuses fork-cohort state when fresh, or builds its own POWER + ACTIVE fork list via the GitHub API when it is not. - Use Case: An upstream maintainer runs the weekly digest and sees that three forks are each missing 20+ skills and that a newly shipped skill has zero fleet adoption, prompting a re-examination of that skill. ## Quick Start Run the fork-skill-gap skill to audit active forks against the upstream skills.json and write the weekly gap report.