Add ARRFLIX wordmark center, Movies/Series nav left, search right,
favicon=A-mark, auth gate so login stays stock, hide on video page.
Side-effect of branding.xml escape (<video> → <video>): prod's
CustomCss block now actually loads, so the INC7 transparent-video
rule reaches the browser. /Branding/Css.css 0 B → 36 256 B; doc-28
black-screen issue closed at the delivery layer.
Markers: ARRFLIX-MIDDLE-THEME-BEGIN/END (style + script) and
ARRFLIX-FAVICON-BEGIN/END (link). Idempotent.
See docs/29 for design + deploy procedure + recovery quirk.
