MIT-A ships: a second deterministic render transport (satori + sharp, alongside the existing quote-card and carousel satori path) turns any idea piece's markdown into branded slide-deck-shaped images — a presentation form for long-form posts, distinct from the square quote-card satori path. One AI turn writes grounded slide text (Notey's two-rule floor); the deterministic satori transport composes each slide to PNG and sharp emits WebP/AVIF + OG-image sizes. Slides are image attachments on the piece — nothing publishes automatically. A new /api/library/[id]/slides route handles POST (generate) and PATCH (re-render one slide with your edited text, zero AI spend); the Library card unlocks a "Review & edit slides" action and an at-a-glance strip when a deck exists; editing is transport-agnostic (slide-deck or carousel markers both open the same editor surface).