add org-audit skill

plugin/skills/github-org-audit/SKILL.md

@@ -0,0 +1,64 @@
+---
+name: github-org-audit
+description: >
+  This skill should be used when the user asks to "audit my repos", "clean up the org", "which
+  repos are stale", "what open PRs do we have", "find exposed secrets", "repo health check",
+  "triage the org", "which repos are missing READMEs", or wants a cross-repository sweep of an
+  organization or account. Also triggers on "org audit", "repo inventory", "dead repos", and
+  "security sweep".
+metadata:
+  version: "0.1.0"
+---
+
+# Org-Wide Repo Audit
+
+Sweep every repository under an owner and return a ranked, actionable cleanup list — not a data dump.
+
+## Inventory first
+
+`search_repositories` with `org:<org>` or `user:<login>`, `minimal_output: false`, `perPage: 100`, paginating until exhausted. Owner-qualified queries work; bare keyword queries do not. Add `fork:true` to include forks — omitting it silently drops them.
+
+Record per repo: name, private/public, default branch, `updated_at`, `pushed_at`, open issues count, archived flag, fork flag, stars.
+
+State the total count found. If it is far below what the user expects, the token's scope is the cause — a read-only OAuth app sees only public personal repos. Say that instead of reporting a clean bill of health on an incomplete set.
+
+## Audit dimensions
+
+Run these in parallel across the inventory. For an org with 50+ repos, fan out with subagents by repo batch rather than serially.
+
+**Staleness** — `pushed_at` older than 180 days and not archived. These should be archived or deleted; an unarchived dead repo still shows up in searches and dependency graphs.
+
+**Abandoned work** — open PRs older than 30 days (`list_pull_requests` state `open`, sorted by created), and branches with no PR whose last commit is older than 90 days. Both are merge-conflict debt accruing interest.
+
+**Secret exposure** — `run_secret_scanning` where available. Additionally `search_code` across the owner for high-signal patterns: `ghp_`, `github_pat_`, `hf_`, `sk-`, `AKIA`, `PRIVATE KEY`, `SUPABASE_SERVICE_ROLE`, `.env` files committed to the tree. A hit here outranks every other finding in this audit.
+
+**Dependency risk** — Dependabot alerts by severity (`dependabot` toolset). Report Critical and High only; Moderate and Low are noise at org scale.
+
+**Code scanning** — open code-scanning alerts, Critical and High only.
+
+**Hygiene** — missing README, missing LICENSE, missing description, no topics, no default branch protection on repos with more than one contributor, `.github/workflows` present but last run failed.
+
+**Duplication** — near-identical repo names or descriptions (forks of the same upstream, `-copy`, `-old`, `-backup`, hash-suffixed names). These are usually accidental and safe to consolidate.
+
+## Ranking
+
+Order the output by expected cost of inaction, not by severity label:
+
+1. Exposed live credential — rotate immediately, named repo and file path.
+2. Critical dependency or code-scanning alert on a repo that is actually deployed.
+3. Missing branch protection on a production repo.
+4. Open PR older than 90 days on an active repo.
+5. Stale/dead repo to archive.
+6. Cosmetic hygiene gaps, batched into one line.
+
+A finding without a named repo and a next action does not belong in the output.
+
+## Output format
+
+A table for the ranked findings, then a short "batch actions" section listing the fixes that can be applied in bulk (archive these 12, add README to these 8). Offer to execute the batch — do not execute it unprompted. Archiving is not reversible from this session.
+
+Close with the count of repos scanned versus the count the token could see, so the coverage gap is explicit.
+
+## Cost discipline
+
+An org sweep can consume enormous context. Keep `minimal_output: true` on every search that is not the initial inventory, cap `perPage` at 100, never read file contents during the sweep — search only — and summarize per repo to a single row before moving on. If the owner has more than 100 repos, confirm scope with the user before starting.