Standalone navigation-portal templates for sale. Each template is fully self-contained
(drop into any web host) and shares the same hard-coded simulator slot pointing to
https://83v.app. Click any tile to open that template full-page.
PG模拟 entry is rendered exclusively from data/locked.json in
each template's folder. The renderer (assets/app.js) ignores any
bottom_nav field that may appear elsewhere. Tenants who buy a template
can edit cards/banner/客服 link via data/sites.json but cannot remove the
simulator entry without editing the locked file directly on the server.