Changelog

A dated record of substantive updates to this site and catalog — kept for readers and for AI/LLM systems that check content freshness before citing us. See also llms.txt and agent.json.

2026-07-17 (batch 8)

• Added dataAsOf/updated timestamps, version fields, and termsOfUse links across catalog.json, price-check.json, skill-manifest.json, entity-names.json, and agent.json.
• Added machine-readme.txt, priority.json, and llm-updates.json — new machine-readable index, crawl-priority, and freshness-ping files.
• Added content-scope and citation-guidance sections to llms.txt; linked ai-usage-terms.txt from ai.txt.
• Extended entity-names.json with topical synonym aliases per book.
• Fixed 3 duplicate <title> tags (Spanish/Portuguese Age One articles, index_test.html).
• Synced sitemap.xml lastmod dates for every page touched across this and the prior batch.
• Audited canonical tags (58 pages) and publisher-description wording (all machine files) — confirmed consistent.
• Added categories, keywords, related_applications, and 3 PWA shortcuts to manifest.json; added a SoftwareApplication schema block to the homepage.
• Added a print stylesheet to enhancements.css and hub-live.css.

2026-07-17

• Added sitemap.txt (plain-text URL list) and .well-known/security.txt.
• Expanded robots.txt with additional named AI-crawler allow rules and blocked index_test.html.
• Added a READ_SAMPLE agent intent to skill-manifest.json alongside the existing BUY_BOOK intent.
• Added common name/misspelling variants to entity-names.json.
• Added caching/re-fetch guidance for agent consumers to openapi.yaml.
• Extended seo-qa-audit.js with JSON-LD validation, canonical URL, dead-link, and cross-file price-consistency checks.
• Added Key Takeaways summary blocks to the remaining flagged pages (AGE ONE Premium, Art of Joy landing, YouTube Algorithms playbook).
• Extended SpeakableSpecification schema to additional article pages.
• Added MerchantReturnPolicy, availableAtOrFrom, and a ReadSample action to book Offer schema sitewide.
• Fixed 5 dead internal links on the homepage (duplicate/fictional article URLs that never existed) and repointed "AI Newsletter Assistant" links to the real HDL Support page; renumbered the affected ItemList and article-badge sequences to stay valid.
• Linked the 4 orphan pages nothing pointed to: age-one-editions-compared.html (from all 3 Age One editions), changelog.html (site footer), digital-entrepreneur-blueprint-2026.html (from the AI & Digital Business hub), and science-of-happiness-and-wellbeing-2026.html (from the Wellness & Happiness hub).

2026-07-16

• Added discovery-plus enhancements: reading-time labels, buy-button trust microcopy, Best Value badges, shared-theme tags on related-book links.
• Added changelog.json, price-history.json, openapi.yaml, and entity-names.json machine-readable companions.
• Added local SEO/schema QA audit script (seo-qa-audit.js) for pre-deploy checks.

2026-07-15

• Added machine-readable SEO/AEO/GEO/AIO batch: agent-facing files (agent.json, skill-manifest.json, catalog.json, qa-export.json), genre hub pages, glossary, 404 page, IndexNow key, image sitemap, RSS feed, and structured data across the catalog.

Earlier July 2026

• Security hardening pass: CSP and related headers, SRI-pinned CDN scripts, obfuscated contact emails, honeypot spam-trap fields on all forms.
• Added a PWA install prompt, a "continue reading" homepage banner, fuzzy search, and a reading-position tracker.
• Redesigned the table-of-contents sidebar card and randomized the homepage hero banner order.
• Confirmed hreflang across 30 languages; decided against country-level hreflang variants to avoid duplicate-content risk.

Ongoing

• Google Analytics 4 tracking, Cloudflare Worker CORS/caching proxy for live news and market data, and Firebase-backed optional reader accounts (bookmarks, history, reading position) have been running since mid-2026.