Sibling to papers/bin/gen-cover.mjs, but format is 1536x1024 (3:2 horizontal page-hero) instead of the 1:1 paper-cover emblem; the prompt file is treated as the complete prompt rather than having STYLE_PREFIX prepended, since each proposal carries its own visual brief (Hockney palette, cream paper, peer-horizontality, AC lore). Both prompts: - horizontal tableau, peer eye-level, jeffrey never centred (per 2026-05-03 Fía rule on jeffrey image gens) - Citrus-green MacBook Neo as the saturated pop colour - AC lore-specific imagery (printed-matter: 14 dossier emblems on the wall + 137 MB bar chart + thermal-printed KidLisp card; culture-hub: 5 players + empty 6th-chair Plot.Place monitor + 6-stripe back-wall menubar piano-roll score) - no institution names spelled out Wired both header.png into the corresponding index.html with alt- text describing the full composition + a meta-line caption. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>