[Docs] Host and publish the user guide (Cloudflare Pages / domain)

[chtnnh]

Summary

User-facing docs are landing in-repo as an Astro Starlight site (website/, see #11). This issue tracks publishing that site — domain, Cloudflare Pages (or equivalent), CI deploy, and who owns DNS/access.

Needs co-ordination with @ni5arga (repo owner / ops).

Why separate from #11

#11 is content and docs-as-code. Hosting needs maintainer decisions: which account hosts Pages, custom domain (if any), whether downloads/checksums live on the same origin, and who can trigger deploys.

Proposed setup (open to change)

• Build: website/ Astro Starlight on push to main (rootDirectory website)
• Host: Cloudflare Pages (static; easy to mirror)
• CI: GitHub Action or Cloudflare’s Git integration
• Trust: signed APK/IPA (or TestFlight) + checksums when distribution starts; keep “only trust a build you compiled or one from a source you trust” on the site

Decisions needed from maintainer

• Cloudflare account / Pages project (or alternate host)
• Custom domain vs *.pages.dev for now
• Deploy from main only, or also PR previews
• Whether the site will host binaries or only link to GitHub Releases

Done when

• Production URL live and linked from README
• Deploy pipeline documented in website/README.md or CONTRIBUTING
• [Docs] No end-user documentation for non-technical people #11 acceptance items that depend on a public URL can be checked off

[chtnnh]

@ni5arga content is in PR #64 (website/ as Cloudflare Pages rootDirectory). Decisions needed are in this issue body.

[chtnnh]

Distribution packaging is now tracked under #79 (Releases, signing, download page, iOS, policy, INTERNET discussion). This issue stays docs hosting only; download page implementation is #82 once Pages is live.