Add GitHub Pages documentation site for SYD

[Copilot]

Sets up an automated Jekyll-based documentation site deployed via GitHub Pages for the SYD (Start Your Dashboard) application.

Changes

CI/CD

• .github/workflows/pages.yml — builds and deploys the Jekyll site to GitHub Pages on every push to main; uses actions/checkout@v4, actions/configure-pages@v5, actions/jekyll-build-pages@v1, actions/upload-pages-artifact@v3, actions/deploy-pages@v4

Documentation structure

• _config.yml — Jekyll config with minima theme, French locale, SEO and feed plugins
• index.md — homepage with navigation table to doc sections
• docs/getting-started.md — prerequisites, install steps, initial config
• docs/features.md — feature overview (dashboard widgets, integrations, accessibility, security)

Activation required

Repository owner must enable Settings → Pages → Source: GitHub Actions to activate deployment. The workflow will then trigger automatically on push to main.

Original prompt

Je souhaite construire des GitHub Pages qui vont être la documentation publique de mon application SYD.

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