We ruled that jump was a “card action” given the arrow on the card next to the ability. But I’m still curious if jump is a move action and that actually lets Luke jump twice.

what are your thoughts and insights?

no, he can't. jump is a card action which also counts as a move action (for "charge" mostly).

"however, a unit cannot perform the same card action more than once during it's activation." swl rules reference, p.17

so while more than 1 move actions would be allowed, "jump" is no move action. it is a card action. the phrase"this is treated as a move action." might be misleading, but the rules are clear.

And as usual, "can't" wins over "can" when it comes to "can't perform the same card action twice" and "jump is treated as a move action" (and a move action can be formed twice)