<button onclick="switchTab('html')" id="btn-html" class="tab-btn active px-6 py-2.5 text-sm font-medium border-b-2 border-indigo-500 text-indigo-400 transition-colors ...

The site isn't deployed yet. Next: more tier 2 components on the core. Progress is noted under each phase below. The aim, in your words: one UI library that everything you build uses (Kritano's app ...