seo-internal-linkinglisted

# seo-internal-linking (M10) Internal links distribute crawl priority and topical authority and tell search engines (and AI crawlers) how your pages relate. Reference: `references/schema-tier1.md` for the entity/`@id` linkage this topology should mirror; M6/seo-entity-linking owns external `sameAs`. ## Audits Working from the PageSnapshot (`rendered_dom` if present, else `raw_html`): 1. **Pillar/cluster topology**: classify each URL (pillar hub vs. cluster page) and confirm clusters link up to their pillar and the pillar links down to its cluster — gaps break the hub-and-spoke model. 2. **Contextual in-body links**: count links inside `<main>`/`<article>` prose (target ~3-5 descriptive in-content links per page); flag pages with zero in-body internal links. 3. **Anchor-text descriptiveness**: flag generic anchors ("click here", "read more", "learn more", bare URLs) and over-optimized exact-match repetition; anchors should describe the destination. 4. **Orphan pages**: list URLs in the sitemap/crawl with no incoming internal links from other crawled pages. 5. **Nav-vs-in-content ratio**: flag templates where boilerplate nav/footer links overwhelm contextual links, diluting per-page link signal. 6. **Semantic HTML**: check for `<main>`, `<article>`, `<nav>`, `<header>`, `<footer>`, one `<h1>`, and a logical heading order — semantic structure helps both parsers and accessibility. ## Fixes - **PROPOSED** (`fixable: proposed`): concrete internal-link insertions — a specific sou