Is Kai (also Kye, Ky, Ki) a name or word in the Filipino language? Or of any other languages/dialects of the Philippines? If so, what does it mean?

The Harry Potter series is very very popular here in the Philippines.

Why hasn't any Filipino translator tried to translate the Harry Potter series in Filipino or in any of the 70 plus dialects of the Philippines?

I see that in sites about the Philippines, they use <i>Pilipino</i>, but my family and everyone from the Philippines speaks <i>Tagalog</i>. Is Pilipino reffering to all the languages and dialects of the Philippines?