Illustrated Explainer Spec Implementation Guide Skill by ara.so — Daily 2026 Skills collection. What This Project Is A spec (not a library) for building a locally-run single-page web app where: 1. User types a topic → AI generates a 16:9 watercolor-style illustrated explainer page 2. User clicks anywhere on the image → AI generates a "drill-into" next page for that spot 3. This repeats infinitely, preserving painting style across all pages 4. Content-addressed caching means identical queries/clicks never re-generate The spec is stack-agnostic — you choose the framework, image model API, and l…