Add cekuu35.github.io/llms.txt

[cekuu35]

Hi — please consider adding this live llms.txt endpoint to the catalog:

• Site: https://cekuu35.github.io/nextjs-template-bundle/
• llms.txt: https://cekuu35.github.io/llms.txt

The file describes a public Next.js + Tailwind template-bundle resource, links to the reviewable demo catalog and canonical checkout, and explicitly states scope/production-integration limitations. The endpoint is publicly accessible without authentication.

Disclosure: I am submitting this on behalf of the site owner.