seo-entity-linkinglisted

# seo-entity-linking (M6) Entity linkage tells search engines and AI systems *which real-world thing* a page is about and ties it to the Knowledge Graph. Reference: `references/schema-tier1.md` (the `sameAs`/`@id`/Person+Organization rules). This module owns the `sameAs` detail M5 defers here. ## Audits Working from the PageSnapshot (`rendered_dom` if present, else `raw_html`): 1. **sameAs identity links**: for `Organization`/`Person` entities, check for `sameAs[]` resolving to canonical identities — Wikidata QID, Wikipedia, LinkedIn, Crunchbase, official social/company profiles. Wikidata is the strongest Knowledge Graph target. 2. **Primary entity defined**: confirm exactly one clear primary entity per page (via `@id` + `mainEntity`/`mainEntityOfPage`), not an ambiguous or missing subject. 3. **Entity consistency (local)**: for `LocalBusiness`, verify NAP (name, address, telephone) in schema matches visible on-page NAP and is internally consistent across blocks. 4. **Entity density**: count distinct linked/marked entities (`@id`d nodes, `sameAs` targets, `about`/`mentions`) — flag thin pages with no resolvable entity references. ## Fixes - **AUTO** (`fixable: auto`): inject a `sameAs[]` array on `Organization`/`Person` using **only user-confirmed URLs**, and add `about`/`mentions` entity references to existing schema. Additive, deterministic diffs for `fix`. **Never invent** identity links — if a URL is unconfirmed, leave a clearly-marked `TODO` placeholder the user fills