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From a BRD to a shipped scoring platform in 13 hours

MagnaCarta went from a business requirements doc to a live Next.js platform — paste a Deliveroo URL, scrape the menu, score it on two rubrics — in 13.1 hours across 52 commits. The BRD → 369-line prototype spec → CLAUDE.md → code chain is exactly why I argue the spec matters more once AI writes the code, not less.


[Standfirst for the "From a BRD to a shipped scoring platform in 13 hours" case — the problem in one paragraph.]

The BRD: what 'menu quality' actually means

[Draft section: the brd: what 'menu quality' actually means. Written when this piece is published — left as a placeholder here rather than fabricated.]

Turning the BRD into a 369-line prototype spec

[Draft section: turning the brd into a 369-line prototype spec. Written when this piece is published — left as a placeholder here rather than fabricated.]

Dual scoring: aggregator completeness + MagnaCarta quality

[Draft section: dual scoring: aggregator completeness + magnacarta quality. Written when this piece is published — left as a placeholder here rather than fabricated.]

Why the spec was the real work, not the code

[Draft section: why the spec was the real work, not the code. Written when this piece is published — left as a placeholder here rather than fabricated.]

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