- Fix mana conversion to deduct from regen instead of mana pool (resolves player stuck at 1 mana below cap)
- Fix Spire Tab error by removing unused legacy import (store-modules/enemy-utils)
- Fix Grimoire Tab error by adding Array.isArray check for effects.map
- Move utility functions from legacy store-modules to utils/ to eliminate legacy dependencies
- Add regression test for mana conversion fix
- Update SpellsTab.tsx imports to use utils instead of legacy stores
- Refactored page.tsx (613→252 lines) with GameOverScreen and LeftPanel extracted
- Refactored StatsTab.tsx (584→92 lines) with section components
- Refactored SkillsTab.tsx (434→54 lines) with sub-components
- Created modular structure for GameContext, LootInventory, and other components
- All extracted components organized into feature directories