Teaching magic spells through weapons

In the hack I'm working on, I wanted the "scan" spell to be available early on via the plumed hat.

Players aren't able to see the AP gained after the battle, which isn't a big deal, but they also can't use the spell once a character learns it! The "magic" ability is just greyed out.

What can you do to allow the magic command to be used before meeting Ramuh?