Skillet v0.1.1

polish(web): drop the trust panel from /install

The install page is a download page. The three reassurance cards sat between the
hero and the setup steps, pushing the actual instructions further down for
someone who has already decided to install.

Nothing is orphaned: the same marketing TrustPanel still runs in the welcome
flow, where a first-time user meets it in context, and /install already links to
/docs/install higher up, so removing the '2-minute version' link does not cut
off the docs.