One repo, many slide decks. Each PPT is a folder of React components. Make PPTs by editing .tsx files; let your coding agent do the writing.

pnpm install
pnpm dev          # landing page (all decks) at http://localhost:5273
                  # one deck   at http://localhost:5273/{ppt}
                  # one slide  at http://localhost:5273/{ppt}/{slug}
                  # (port 5273 walks up to 5274, … if busy — see the
                  #  URL pnpm dev prints)

Hand the repo to a coding agent and tell it what you want.

Read SKILL.md before doing anything. It explains the slide contract, the editing loop, the Annotated rationale schema, the per-PPT deck config, the routes, the headless CLI, and what's safe vs. risky to modify. Any AI tool (Claude Code, Cursor, Codex, etc.) cloning or forking this repo should treat SKILL.md as the source of truth.

There are two feedback loops: pnpm ppt text [ppt] for content edits, and the single-slide route /{ppt}/{slug} (viewed via whatever browser tool your agent has — Playwright MCP, built-in screenshot, etc.) for layout edits. The Harness intentionally does not ship a screenshot tool; use what your agent already provides.

If your change touches how the Harness itself works — new slide-kit primitive, modified slide contract, new/removed CLI command, changed deck-config format, changed routing, changed canvas size, etc. — re-read SKILL.md and update it in the same change, so the next agent inherits the new convention instead of the old one.

• slides/{ppt}/<kebab-title>.tsx — one file per slide; the folder is the PPT and maps to the /{ppt} route.
• slides/{ppt}/deck.config.ts — that PPT's deck (order + visibility; comment a line to hide) plus meta (title / description / cover for the landing card).
• src/lib/router.ts — the slug-based route parser (/, /{ppt}, /{ppt}?print, /{ppt}/{slug}).
• src/lib/slide-kit.tsx — SlideFrame plus a small set of layout primitives.
• src/lib/ppt.ts — the Annotated and DeckMeta types.
• scripts/ppt.ts — headless CLI (pnpm ppt text | list | new | new-deck).
• vercel.json — SPA fallback so deep links resolve on static hosts.
• SKILL.md — instructions for the coding agent.

The landing page at / lists every PPT with a visible deck. Each slide is a fixed 1920×1080 canvas, scaled to fit the viewport.

Open any deck and hit Export PDF (or just Cmd/Ctrl+P) to save it. The deck is real DOM, so the export is the browser's own print — one slide per page, with selectable, searchable vector text. No tooling required.