⚙️ Dynamic Upgrade System
– Each click now grants level + 1 Aura (up to max_level) that you can change in config.
– The price for the next level automatically doubles.
– The config’s max_level is strictly enforced.
Live GUI Refresh
– The shop menu instantly updates prices & levels without closing or reopening.
Persistent Reward Claims
– Rewards (e.g. at 500 Aura) are granted to each player only once.
– Claim status is saved in playerdata.yml and persists across reloads.