VideoCard grid: YouTube-style layout — channel avatar circle (falls back
to letter) left of title/meta, avatar is clickable to go to channel page,
date on its own line for breathing room, badges inline with channel name
Bottom nav: env(safe-area-inset-bottom) so it clears iOS home indicator,
active tab gets a soft accent pill behind the icon, slightly bolder label
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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