fix: resolve all TypeScript compilation errors

- Fixed DisciplinesAttunementType enum usage in discipline data files
- Fixed EquipmentSlot import in equipment/types.ts
- Fixed enchantment-effects.ts export/import chain
- Fixed safe-persist.ts StateStorage type compatibility
- Fixed store persist partial return types for all stores
- Fixed gameStore.ts ElementState type and error handling
- Fixed useGameDerived.ts missing properties on GameCoordinatorStore
- Added SkillUpgradeChoice type to types.ts
- Fixed ActionButtons.tsx optional currentStudyTarget prop
- Fixed GameToast.tsx Toast type compatibility
- Fixed EnchantmentDesigner sub-component type mismatches
- Fixed SpireCombatPage equippedInstances/equipmentInstances types
- Fixed page.tsx computeClickMana argument
- Added baseCastTime to SpellDef type
- Fixed golem/types.ts and loot-drops.ts import paths
- Fixed craftingStore.ts missing lastError in initial state and actions
- Fixed store-actions-combat-prestige.test.ts Memory type usage
- Fixed floor-utils.upgraded.test.ts array type annotation
- Fixed computed-stats.test.ts state type assertions
- Fixed activity-log.test.ts state type annotation
- Fixed discipline-math.test.ts enum value usage
- Fixed game-loop.test.ts vitest mock import
- Various other test file type fixes

src/components/game/ActionButtons.tsx

@@ -5,7 +5,7 @@ import type { GameAction } from '@/lib/game/types';
 
 interface ActionButtonsProps {
   currentAction: GameAction;
-  currentStudyTarget: { type: 'skill' | 'spell'; id: string; progress: number; required: number } | null;
+  currentStudyTarget?: { type: 'skill' | 'spell'; id: string; progress: number; required: number } | null;
   designProgress: { progress: number; required: number } | null;
   designProgress2: { progress: number; required: number } | null;
   preparationProgress: { progress: number; required: number } | null;