Even high cri lights have a huge blue spike that doesn't match the sun. I don't know what chip OP uses, but you need a full spectrum light if you actually want very sun-like light. This page has some details:

https://optimizeyourbiology.com/best-natural-full-spectrum-l...

No idea if there's any evidence or not of the blue spike actually mattering for human biology.

Kind of what I worry about—the spectrum mismatch. Damn but incandescents sound pretty good for just this one application. I must be (am) getting old.

I think the whole thing is a made up ai hallucination. I was suspicious because it sounded llm'ish, and after googling I can't find any other sources on Al-Khatt al-Tujjari or Sifraniyah.

I do not feel like the author's profile is going to change your mind on that: https://medium.com/@macvsogjc/about

I concur: earlier article from the same "author": https://medium.com/@macvsogjc/phoenica-toward-a-programming-...