Replace the hand-traced figures in the home-page intro animation with the
official Kaiser-Natron brand vectors (Ikone "Hebe" + Waterfall), rendered as
flat mint silhouettes (dark print outline dropped) on the brand-green hero.
Lady at the origin holding the white natron; waterfall half-scale, vertically
centred to her right. Same entrance choreography/timing as before. Source SVGs
in src/assets/brand/, path data in heroFigures.js.
Drops the ~570KB traced splashPaths.js import from the home page (HomePage
chunk ~214KB -> ~70KB).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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