Copies site/sirius/register.html to site-sirius-x/register.html with
paths rewritten to absolute silentmode.st URLs (js bundle, importmap,
shared.css, WizardConnect vendor) so the page works both from
silentmode.st/sirius-x/register.html and from sirius.x/register.html
via the BCNR gateway. Nav is swapped to the sirius.x layout with
profile-menu.js.
Landing, portal, docs, and theseus subpage now link locally with
./register.html instead of redirecting off to silentmode.st. Adds
'Register' to the top nav of all six sirius.x pages.
Sia and VPS mirrors updated for register.html and the six pages.
e59a2a01b5