Role: Expert Spigot Developer (Java 21, Paper API 1.21+) Task: Create "StellaStats", a GUI-based ranking plugin. Key Features: Command: /ranking opens a 54-slot GUI menu. Categories: Mining (Blocks broken), Combat (Mob kills), Activity (Playtime), and Deaths. GUI Design: Use category icons (Pickaxe, Sword, Clock, Skull). Clicking an icon shows the Top 10 players using Player Heads. Lore Details: Show "Rank #X: [Value]" on each head. Optimization: CRITICAL. Cache all ranking data every 10 minutes. Use asynchronous tasks for sorting/loading to prevent main thread lag. Data Source: Use org.bukkit.Statistic for efficiency. Personal Info: Show the requester's current rank at the bottom (Slot 49). Output: Provide a clean, modular RankingGUI.java and a main StellaStats.java with a basic config to toggle refresh intervals.