seo-sitemaps

# seo-sitemaps (M17) Sitemaps are the discovery contract you hand the crawler — they should list exactly the canonical, indexable URLs and nothing else. Schema rules for related markup: `references/schema-tier1.md`. ## Inputs Work from the PageSnapshot named in your dispatch envelope: read `parsed` from `<run_dir>/pages/<slug>.json` plus `<run_dir>/site/sitemaps.json` (+ `site/sitemap-urls.txt`), `<run_dir>/site/robots.json`, and `<run_dir>/crawl.json` for orphan reconciliation and per-URL status; Grep `pages/<slug>.html` for verbatim evidence. Deterministic findings already emitted by `audit.mjs` are listed in `<run_dir>/findings.deterministic.json` — do not re-emit those ids; add model-judged findings only. If invoked directly with a URL/path and no snapshot exists, first run `node "${CLAUDE_PLUGIN_ROOT}/scripts/snapshot.mjs" <target> --out "${CLAUDE_PLUGIN_DATA}/runs"` and use the printed snapshot path. ## Audits Working from the PageSnapshot (`parsed_rendered` when `render.used` is not `none`, else `parsed`) plus `site/sitemaps.json` and `site/robots.json`: 1. **Presence & validity**: locate XML sitemap(s) (`/sitemap.xml`, robots `Sitemap:` lines, sitemap index); parse as well-formed XML against the sitemaps.org schema. 2. **Size limits**: each sitemap `<=50,000` URLs and `<=50MB` uncompressed; if exceeded, expect a sitemap index splitting the set. 3. **Extensions**: where relevant, validate `image:`, `video:`, and `news:` namespace entries (correct namespace declared,...