The top and bottom action both only refer to the values written in main line abilities, such as "Attack X," and not to any bonus supplied by supplemental text, items, or persistent abilities (however any persistent abilities that grant additional move or attack abilities on your turn are still fair game).

Wording of Wings of the Night bottom should read “Before your next 4 Attack actions, perform a Move 2 as the first ability of the action”

You must actually attack to have an attack action, but as long as you get in a position to do so, you gain the move, even if you are not in a position to do so before the move. You must be able to provably do the attack after moving - so can't open doors or reveal new/hidden information if doing so may prevent the attack. Items and any other abilities or effects that affect the total movement may be used to reach the attack hex.