performance.js paints a full-screen boot placeholder immediately on
page load (before app-runtime.js and the real auth gate exist), so it
never got updated when login-signature-v1776.js was redesigned from a
dark two-column layout with an offer-gallery/002.jpg table photo to
the light single-column "cream login" with the Caterium SVG mark.
Result: every signed-out visitor saw the old dark/photo screen flash
for a moment, then get replaced by the new light screen once the real
gate rendered - the flicker was two genuinely different, undeployed-
in-sync designs, not a caching artifact. Rebuilt the boot placeholder's
markup and inline critical CSS to mirror login-signature-v1776.js's
current design (same background, mark, type, and copy) so the first
paint already matches what replaces it.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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