The phoneme /h/ is present only before vowels, if between two vowels it is realized as /ʔ/.
If a phoneme Y realizes as X, doesn't that mean X is an allophone of Y?
But well they aren't.
You should make a different phonology section and a different ortography section.
But the ortography seems interesting, however.
/h/ is only [h] natively word-initial (before vowels only), the <hh> digraph represents [h] intervocally in substandard words and the letter name Ahha. 'Ayin appears between vowels as an allophone of /h/. /h/ does not