Hi! Thank you for allowing me to clarify this point (I already received feedback about that and I want to explain better it in the future).
You regain stamina at the end of an action. An action is formed by 2 parts: action and (eventual) consequences.- If you don't have consequences (like in your example, rolling 6+), you regain stamina immediately at the end of the action roll.
- If you have consequences (rolling 1-5), you regain stamina after the consequences - so you need to use the stamina points you didn't use in the action roll to create the resistance dice poll.