presentation-deck has two modes. Narrative mode produces a slide-by-slide markdown structure — each slide has a headline written as a takeaway (not a topic label), supporting content points, visual guidance, and speaker notes. Slides mode generates an actual presentation file: .html (default, self-contained), .pdf (via playwright or weasyprint), or .pptx (via python-pptx). Required inputs: audience and purpose/deck type. High-stakes deck types (Exec Review, Board Update) include an additional stress test on the narrative.
Most presentation problems are narrative problems, not design problems. Slides full of bullets fail because they describe content rather than make a claim. A deck with a clear Situation → Complication → Resolution arc tells the audience what to think, not just what to look at. presentation-deck builds the narrative first. If you can't state each slide's headline as a complete claim, the thinking isn't ready to put on a slide.
Day 18 synthesizes the week. The PM has built a business case, prioritized a roadmap, captured decisions, aligned on operating principles, and drafted a one-pager. The deck is how all of that becomes a coherent leadership narrative — the most composable output in the kit.