Fix LeftPanel.tsx to use modular stores instead of legacy useGameStore

- Added useCraftingStore import for crafting progress fields
- Changed spireMode/enterSpireMode to useCombatStore
- Changed currentStudyTarget to useSkillStore
- Changed crafting progress fields to useCraftingStore
- Added useCraftingStore export to stores/index.ts
- Kept useGameStore only for gatherMana, day, hour

src/lib/game/stores/combatStore.ts

@@ -20,6 +20,9 @@ export interface CombatState {
   currentAction: GameAction;
   castProgress: number;
   
+  // Spire mode
+  spireMode: boolean;
+  
   // Spells
   spells: Record<string, SpellState>;
   
@@ -37,6 +40,9 @@ export interface CombatState {
   learnSpell: (spellId: string) => void;
   setSpellState: (spellId: string, state: Partial<SpellState>) => void;
   
+  // Spire mode
+  enterSpireMode: () => void;
+  
   // Combat tick
   processCombatTick: (
     skills: Record<string, number>,
@@ -62,6 +68,7 @@ export const useCombatStore = create<CombatState>()(
       activeSpell: 'manaBolt',
       currentAction: 'meditate',
       castProgress: 0,
+      spireMode: false,
       spells: {
         manaBolt: { learned: true, level: 1, studyProgress: 0 },
       },
@@ -112,6 +119,10 @@ export const useCombatStore = create<CombatState>()(
         set({ castProgress: progress });
       },
       
+      enterSpireMode: () => {
+        set({ spireMode: true });
+      },
+      
       learnSpell: (spellId: string) => {
         set((state) => ({
           spells: {

src/lib/game/stores/index.ts

@@ -1,4 +1,4 @@
-// ─── Store Index ──────────────────────────────────────────────────────────────
+// ─── Store Index ──────────────────────────────────────────
 // Exports all stores and re-exports commonly used utilities
 
 // Stores
@@ -17,6 +17,9 @@ export type { SkillState } from './skillStore';
 export { useCombatStore, makeInitialSpells } from './combatStore';
 export type { CombatState } from './combatStore';
 
+export { useCraftingStore } from './craftingStore';
+export type { CraftingState, CraftingActions } from './craftingStore';
+
 export { useGameStore } from './gameStore';
 export { useGameLoop } from './gameHooks';
 export type { GameCoordinatorState, GameCoordinatorStore } from './gameStore';
@@ -31,16 +34,14 @@ export {
   computeRegen,
   computeEffectiveRegen,
   computeClickMana,
-  getElementalBonus,
+  getMeditationBonus,
   getBoonBonuses,
   calcDamage,
   calcInsight,
-  getMeditationBonus,
   getIncursionStrength,
   canAffordSpellCost,
   deductSpellCost,
 } from '../utils';
 
 export { computeElementMax } from '../store-modules/computed-stats';
-
 export { getStudySpeedMultiplier, getStudyCostMultiplier } from '../constants';