Retire: redirect the standalone augur site to the CorvidLabs hub

[0xLeif]

Summary

• The standalone augur site (Astro, deployed to GitHub Pages at corvidlabs.github.io/augur/) is retired. Its marketing and docs are fully migrated to the CorvidLabs hub.
• Every route now redirects to its hub equivalent via a dependency-free redirect stub (RedirectLayout.astro): meta http-equiv="refresh", a <link rel="canonical"> to the hub URL, robots: noindex, follow, and a visible "This site has moved to CorvidLabs →" fallback link.
• Redirect mapping:
  • / and 404 → https://corvidlabs.github.io/corvidlabs-site/augur/
  • /docs → https://corvidlabs.github.io/corvidlabs-site/augur/docs/
  • /docs/* → https://corvidlabs.github.io/corvidlabs-site/augur/docs/<slug>/ (deep links preserved; [...slug].astro still emits a stub per existing doc slug)
• The site keeps building and deploying unchanged (static output, same routes). Old marketing components/layouts are left in place but no longer referenced.

Test Plan

• bun run build passes; all 11 routes emit (index, 404, docs index, 8 doc slugs)
• Opened built HTML for /, /docs, /docs/quickstart, 404 — each has the correct meta-refresh + canonical pointing at the matching hub URL, plus the visible moved link
• After deploy: confirm GitHub Pages serves the redirects and the browser follows the meta-refresh

🤖 Generated with Claude Code

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[github-actions]

augur: ✅ PROCEED - risk 25/100

Confidence 75/100 - calibration prior-only (0 incidents / 1 commit).

File	Risk	Verdict	Top signal
site/src/pages/index.astro	22	✅ proceed	test-gap: code changed with no test in the changeset
site/src/layouts/RedirectLayout.astro	17	✅ proceed	test-gap: code changed with no test in the changeset
site/src/pages/404.astro	16	✅ proceed	test-gap: code changed with no test in the changeset
site/src/pages/docs/[...slug].astro	16	✅ proceed	test-gap: code changed with no test in the changeset
site/src/pages/docs/index.astro	15	✅ proceed	test-gap: code changed with no test in the changeset
site/src/lib/hub.ts	15	✅ proceed	test-gap: code changed with no test in the changeset