menuband landing: drop faux menu bar, frosted strip, titlebar h1; add prod live-reload
Strip the menu bar (apple logo, File/Edit/View/Window/Help, dock-piano, clock) and
its CSS, dark-mode rules, clock IIFE, and the genie effect that flew the hero
icon into the dock-piano. Also drop the 'an aesthetic computer instrument'
frosted strip and the titlebar 'menuband' link.
Add a long-poll loop against /api/version (the same endpoint prompt.mjs uses)
so a fresh `lith/deploy.fish` triggers an auto-reload within ~5s.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>