All notable changes to AI Explained are documented here. Format follows Keep a Changelog.
[Unreleased]
[0.3.0] — 2026-03-23
Added
- Tools index (
/tools): 28 free tools across all 9 tracks, categorised as Free / Free tier / Open source with verified dates and jump navigation - RSS feed (
/rss.xml): all published modules in curriculum order; autodiscovery<link>on every page - SEO:
BreadcrumbList+LearningResourceJSON-LD on module and track pages; optionalseoTitle/seoDescriptionfrontmatter fields for modules - Sitemap:
sitemap-index.xmlgenerated at build via@astrojs/sitemap - OG images: branded 1200×630 PNG generated at build time for each published module (
/og/{track}/{module}.png) - Changelog: this page
Changed
- Footer: fixed placeholder GitHub URL; added Tools, RSS, and Changelog links
- Header: added Tools nav link
[0.2.0] — 2026-03-23
Added
- Sidebar navigation: track module list with localStorage-backed read/unread progress dots; updates live without page reload via
module:readCustomEvent - Mark as read: button at the bottom of every module, persisted to localStorage; abstraction layer in
src/utils/progress.tsdesigned for future swap to server-backed store - Inline quiz: client-side multiple-choice quiz component with per-question feedback, final score, retry, and localStorage score persistence
- Quiz data: 5 questions for module 1.1 (What is an LLM?)
- GitHub issue templates:
new-module,correction,stale-content
Changed
- Layout: module pages now use a two-column layout (sidebar + content)
[0.1.0] — 2026-03-23
Added
- Content schema: 9-track curriculum with 3-layer progressive disclosure (Surface / Guided / Deep Dive)
- First published module: 1.1 — What is an LLM? (Foundations track), covering stateless function mental model, tokens, context window, temperature, inference, and architecture implications across all three layers
- Quiz schema: multiple-choice only;
answervalidated as integer index withinoptions[]bounds at build time - Routing:
/learn/[track]/[module]URL structure with prev/next navigation - Open source foundation: dual license (CC BY-SA 4.0 content + MIT code),
CONTRIBUTING.md, contributor module template - Redirect:
/learn/how-agents-work→/learnfor old prototype URLs