Classic mode reproduces the 2018 toidicodedao image and its 5 hardcoded
element cards verbatim. Modern mode renders a data-driven grid built from
GitHub Linguist colors classified into Ngũ Hành elements via a deterministic
HSL rule set. Toggle persists via URL hash; both panels coexist in DOM with
a CSS opacity fade. Includes a collapsed debug panel listing skipped (no
color) and borderline (near hue boundary) entries.
- data/github-colors.json: vendored from ozh/github-colors (722 entries)
- js/classify-element.js: pure HSL classifier (664 lang sample, 22/22 fixtures pass)
- js/mode-toggle.js: tablist with hash persistence + arrow-key nav
- js/render-elements.js: chip rendering with YIQ contrast + debug panel
- js/main.js: fetch + classify + render entry point
- style.css: segmented toggle, panel fade, chip pill, debug-panel, mobile
