Every page below is a complete, self-contained HTML file: one
<script src="../packages/stargantt/dist/stargantt.iife.js"> tag, then a boot script
that composes StarGantt.presetStandard() (and, where the page demonstrates one, an
opt-in factory — tracking(), resource(), dataSync(),
portfolio(), i18n(), perfTools()) through the public API only.
Six pages (basic.html, interaction.html, scheduling.html,
tracking.html, resource.html, data-sync.html) are exercised by
the Playwright E2E suite; the rest demonstrate individual features through the nested-config
plugin API.