Block 4 · PR #2 commit 2a · atoms + layout

Header & footer are live.

13 section components ship in commit 2b; full V2 homepage assembly in 2c.

This page already runs the production atoms — Button, Eyebrow, ChipRow, Callout, SectionHead, StatCell, LargeStatCard, TintedCard — and the M1-trimmed footer. The placeholder copy here gets replaced when 2c lands.

See the design oracle (prototype)

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