[Hotfix]
- Fixed #20: Fixed an issue where skill refunds would guarantee a minimum return of 1 SP.
- Fixed #21: Fixed a bug where the purchase/refund tooltip would be hidden if the player couldn't afford the skill.
- Emergency Rework: Overhauled "Spare Parts" logic for better balance. The refund probability is now rolled per ingredient rather than globally per craft. Added a new configurable cap to limit the maximum number of materials that can be recovered per craft.