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/lib/game/stores/gameStore.ts

@@ -342,10 +342,11 @@ export const useGameStore = create<GameCoordinatorStore>()(
           setDiscipline: (w) => useDisciplineStore.setState(w),
           addLogs: (msgs) => msgs.forEach((m) => useUIStore.getState().addLog(m)),
         });
-        } catch (error) {
+        } catch (error: unknown) {
           // Log error to UI store if available, otherwise console error
           try {
-            useUIStore.getState().addLog(`⚠️ Tick error: ${error.message}`);
+            const msg = error instanceof Error ? error.message : String(error);
+            useUIStore.getState().addLog(`⚠️ Tick error: ${msg}`);
           } catch {
             console.error('Tick error:', error);
           }