llm-seo-readiness

# LLM and SEO readiness (Aptos docs) ## LLM / machine-readable - **Frontmatter**: Every new or renamed doc needs accurate `title` and `description` in English; they surface in `/llms.txt` and `.md` exports. Mirror updates in `src/content/docs/zh/` per agent guidelines (Spanish `es/` is out of scope for agent-maintained docs). - **Curated lists**: If a page should appear in the LLM index or early in full corpus, update `src/lib/llms-curated-ids.ts` (`LLMS_INDEX_SECTIONS`, `LLMS_SMALL_DOC_IDS`, `FULL_PRIORITY_DOC_IDS` as appropriate). Build fails if an id is missing from English non-draft docs. - **Index copy**: User-facing explanations live in `src/content/docs/llms-txt.mdx`, `src/content/docs/build/ai.mdx`, and the Chinese `zh/` counterparts—keep URLs and feed names aligned with `src/pages/llms-index.ts`. - **HTML → Markdown**: Shared logic is `src/lib/llms-html-sanitize.ts`. When minifying for `llms-small.txt`, collapse **spaces/tabs only**—never all `\s` (newlines must survive for fenced code and Markdown structure). - **Route wiring**: Custom handlers are swapped in via `src/integrations/llms-txt-index.ts`; endpoint implementations live under `src/pages/llms-index.ts`, `src/pages/llms-small.txt.ts`, `src/pages/llms-full.txt.ts`. - **Robots**: `public/robots.txt` should stay consistent with sitemap URL and, when feeds change, the commented LLMs.txt pointers at the bottom. ## SEO - **Per-page metadata**: Starlight frontmatter `title` / `description` feed OG, Twitter, and...