[codex] Improve docs AI visibility

[ifrederico]

Summary

• Fixes llms.txt links and adds the 10 priority tea documentation URLs.
• Expands Mintlify product content with category intros, structured tea entries, and 10 dedicated tea sub-pages.
• Adds JSON-LD schema for brewing guides, tea article pages, and contact LocalBusiness data, plus a local validation script.

Why

The docs site had crawlable structure but thin product prose and broken llms.txt links. This makes the Mintlify docs more discoverable, extractable, and citation-friendly for AI search and LLM crawlers.

Validation

• node scripts/validate-ai-visibility.mjs
• npx --yes mintlify@latest validate
• git diff --check
• Local Mintlify preview checks for llms.txt, priority tea routes, and rendered JSON-LD source

Post-deploy checks

• Verify production https://docs.tecompanytea.com/llms.txt now serves the new text/plain file.
• Verify all new /products/tea/{slug} production URLs return 200.
• Verify production sitemap.xml includes the 10 new pages.
• Run the key production URLs through Google Rich Results Test and Schema.org validator.