Premium content boundary — demonstration page

This page is a DEMONSTRATION SURFACE, not a product feature. It exists so the content.premium capability has something to gate, and so the tier floor can be observed in a browser. Nothing links to it. Delete it once real premium content exists.

Served at /Documentation/accounts/tierfloor. The accounts- filename prefix is load-bearing: Trunk::uxMarkdown dispatches on a fixed whitelist of cases, and accounts is the one that accepts a sub-slug.

Everything above the boundary below is public to any logged-in member, including a member whose membership has lapsed and who is therefore sitting at the free tier.

What this demonstrates

The boundary is a single authored element, mkd-login-here, placed in the content by whoever wrote it. convertMarkdown() asks one question — does this reader hold content.premium? — and if the answer is no, it cuts the page here and appends a call to action.

That is a teaser and a wall, not a refusal. The member still reaches the page, still sees the part above the cut, and is told what to do about the rest. Compare that with a 403, which tells them only that something exists and they cannot have it.