Header bar dropped from all pages; brand, system stats (#sys-stats) and clock
(#clock) now live in the 22px footer next to the version. .layout fills the
full height minus the footer. ensureFooter runs before startClock/refreshStats
so the moved elements exist when populated.
VERSION 0.0.136.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>