launch: point contractplane.dev at GitHub Pages

[Q00]

Goal

Make the deployed GitHub Pages site reachable at https://contractplane.dev.

Cloudflare DNS

Create these records as DNS only (gray cloud) while GitHub issues the certificate:

• A @ → 185.199.108.153
• A @ → 185.199.109.153
• A @ → 185.199.110.153
• A @ → 185.199.111.153
• AAAA @ → 2606:50c0:8000::153
• AAAA @ → 2606:50c0:8001::153
• AAAA @ → 2606:50c0:8002::153
• AAAA @ → 2606:50c0:8003::153
• CNAME www → Q00.github.io

Remove conflicting apex A/AAAA and www records. Keep the repository Pages custom domain set to contractplane.dev.

Verify

• https://contractplane.dev/
• https://contractplane.dev/llms.txt
• https://contractplane.dev/spec/v1alpha1/domainpack.schema.json
• https://contractplane.dev/assets/contractplane-hero.webp

After GitHub reports the certificate ready, enable Enforce HTTPS in Pages settings. The Pages deployment itself is already green and all four paths return 200 when resolved directly to the GitHub Pages IP.

[Q00]

Correction to launch order: verify the personal-account Pages domain first. Open https://github.com/settings/pages, choose Add a domain, enter contractplane.dev, then add the generated TXT in Cloudflare as _github-pages-challenge-Q00 (TTL Auto). GitHub public GraphQL mutation only supports organization/enterprise owners, so the personal-account token must be generated in this settings screen. After GitHub shows the domain as verified, add the A/AAAA/www records listed above.