Added

• Awakening system at level 40 that grants the System Quest item
• System Quest item protections (non-droppable, non-storable) with auto-return if inventory is full
• Quest list/detail GUIs and class selection GUI via /sololeveling999 quests
• Bedrock portal spawning from the System Quest item, with entry opening class selection
• Job Change Arena instancing with 5-wave progression and spawner finale, plus fail-on-death handling
• Class rewards and /sololeveling999 class commands for sword, bow, and fireball
• Intelligence stat with configurable mana and magic damage scaling
• Mana system with configurable base, regen, and ActionBar/BossBar display
• Mage fireball ability with mana cost and intelligence-based magic damage
• Portal cooldown/lifetime controls and optional mob scaling for arena waves

Changed

• Stats GUI includes Intelligence and updated slot layout
• Attribute application supports class passives and intelligence-driven mana updates
• Player data now persists intelligence and chosen class
• Main plugin now registers awakening, portal, arena, and mana listeners