Add marp version of slides #2

	name: Slides

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	permissions:
	contents: read
	pages: write
	id-token: write

	concurrency:
	group: slides
	cancel-in-progress: false

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v6

	- uses: actions/setup-node@v6

	- run: npm install --global @marp-team/marp-cli@^4

	- name: Build slides (HTML)
	run: marp slides/index.md -o slides/index.html

	- name: Build slides (PDF)
	run: marp slides/index.md --pdf -o slides/slides.pdf

	- name: Build slide thumbnail (first slide PNG)
	run: marp slides/index.md --image png -o slides/slides-thumb.png

	- name: Upload Pages artifact
	uses: actions/upload-pages-artifact@v5
	with:
	path: ./slides

	deploy:
	if: github.event_name != 'pull_request'
	needs: build
	runs-on: ubuntu-latest
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	steps:
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v4

Provide feedback