Interactive reveal.js decks

Builds a deck directly against reveal.js instead of a Markdown wrapper, so it can carry a designed interface and panels the presenter drives on stage.

Use this when the deck's value depends on showing a mechanism working — a generator emitting its output, a fix being applied, one approach beating another. Don't use this for a deck that is genuinely a list of points: reveal-md (see the reveal-md skill) is less work and the right answer there. A widget that only decorates a slide is worse than the bullet it replaced.

Scaffold

powershell -ExecutionPolicy Bypass -File skills/interactive-reveal-deck/scripts/New-RevealDeck.ps1 `
    -Path D:\talks\my-talk\deck -Title "My Talk"