I've been thinking ... how do you go about adding a forestay or short
headstay or what do you call it stay ,,, for a storm jib?

Ok, connect to mast and run wire to deck .. duh?

The deck connection ,, this is where I get lost. Doesn't the stay base need
to be bolted through deck to some type of bulkhead of something? What do
you do if there is no bulkhead below?

How can you support the stay base in the forward part of the deck?