- static/pxe-ui.css: the redesign's colour tokens (light and dark),
shell, chips, stage track, expandable rows, menus and buttons. The
legacy tokens (--bg-card, --border, --text-light, ...) alias onto the
new ones so pages not yet redesigned blend in.
- base.html: new sidebar (Operate, Images, Updates, Tools) with the GE
Aerospace logo on the brand blue, to-do count, theme toggle with
aria-pressed, and a menu button on narrow screens. The to-do banner is
now a one-line strip. Skip link and <main> landmark added.
- _ui.html: Jinja macros for chip, track, the actions menu and the page
header.
