Set up the public Made website on GitHub Pages

[douglasjarquin]

Set up the public Made website on GitHub Pages

Made has no public site. Pinchos and sf2-themes already do: Astro static sites published from main to GitHub Pages.

• Pinchos: https://douglasjarquin.github.io/pinchos/ (site/, workflow .github/workflows/site.yml)
• sf2-themes: https://douglasjarquin.github.io/sf2-themes/ (web/, workflow .github/workflows/deploy.yml)

Give Made the same kind of site: a real landing page people can open.

Related: #29 asked to wire up or remove a docs Astro scaffold (port no-mistakes' Starlight docs, or delete the clutter).
There is no Astro scaffold under docs/ today.
This issue is the decision: ship a public product site like pinchos / sf2-themes, not a no-mistakes docs clone.

Why

A GitHub README is not a site.
Made's pitch is already on the repo ("turn code into green PRs") and in the header image, but there is no public URL to send someone to.
Pinchos and sf2-themes solved that with a small Astro site on GitHub Pages.

Constraints

• Follow the pinchos / sf2-themes pattern: Astro, static output, GitHub Pages project site, deploy from main with GitHub Actions.
• Live URL is https://douglasjarquin.github.io/made/ with base: '/made'.
• Put the site in site/.
  Keep docs/ as the in-repo markdown that agents already read.
• Do not port no-mistakes' Starlight docs/ site.
  That is a different product and a different information architecture.
• Do not copy pinchos or sf2-themes branding.
  Made already has a GitHub header image; use this project's own voice and that art.
• Do not turn this into a full documentation portal.
  v1 is a landing page plus a getting-started page that matches how someone actually installs and runs made.
• Pages is not enabled on this repo today (the Pages API 404s).
  Enabling GitHub Pages with source GitHub Actions is part of done.
• The PR that ships this must Closes #<this-issue>.
  If Wire up or remove the docs Astro scaffold #29 is still open when this lands, close Wire up or remove the docs Astro scaffold #29 as completed-by-this or not planned, with a comment pointing here.

v1 pages

• /made/ landing: what Made is, how it relates to no-mistakes / consigliere / herdr, GitHub CTA.
• /made/start/ (or /install/): install and the first useful commands (made doctor, made verify, made cursor) from the README, not a paraphrase that will drift.

Optional later, not this issue: command reference, changelog, llms.txt.

Acceptance

• Astro static site lives in site/ with base: '/made' and a site origin of https://douglasjarquin.github.io (or the pinchos form that includes the path).
• Landing and getting-started pages are real product pages.
• In-repo markdown under docs/ stays the agent/docs source of truth and is not replaced by Starlight.
• mise (or existing repo) tasks can install, dev-serve, and build the site from the repo root.
• A GitHub Actions workflow builds the site on PRs that touch it, and deploys to GitHub Pages only from main.
• GitHub Pages is set to GitHub Actions and https://douglasjarquin.github.io/made/ serves the landing page.
• README links the live site.
• PR uses Closes #<this-issue>.