fix: update EquipmentTab to use modular stores, fixing tab crash

src/components/game/tabs/EquipmentTab.tsx

@@ -11,18 +11,20 @@ import {
 } from '@/lib/game/data/equipment';
 import { ENCHANTMENT_EFFECTS } from '@/lib/game/data/enchantment-effects';
 import { getUnifiedEffects } from '@/lib/game/effects';
-import { fmt } from '@/lib/game/store';
+import { fmt } from '@/lib/game/stores';
 import { Button } from '@/components/ui/button';
 import { GameCard } from '@/components/ui/game-card';
 import { SectionHeader } from '@/components/ui/section-header';
 import { StatRow } from '@/components/ui/stat-row';
 import { Badge } from '@/components/ui/badge';
-import type { GameStore, EquipmentInstance } from '@/lib/game/types';
+import type { EquipmentInstance } from '@/lib/game/types';
 import { EquipmentSlotGrid } from './EquipmentSlotGrid';
 import { EquipmentInventory } from './EquipmentInventory';
 import { EnchantmentsPanel } from './EnchantmentsPanel';
 import { useGameToast } from '@/components/game/GameToast';
 import { ConfirmDialog } from '@/components/game/ConfirmDialog';
+import { equipItem, unequipItem, deleteEquipmentInstance } from '@/lib/game/crafting-actions';
+import { useCombatStore } from '@/lib/game/stores';
 
 // Rarity color mappings using design system tokens
 export const RARITY_BORDER_COLORS: Record<string, string> = {
@@ -33,7 +35,6 @@ export const RARITY_BORDER_COLORS: Record<string, string> = {
   legendary: 'border-[var(--mana-light)]',
   mythic: 'border-[var(--mana-dark)]',
 };
-
 export const RARITY_BG_COLORS: Record<string, string> = {
   common: 'bg-[var(--bg-sunken)]/30',
   uncommon: 'bg-[var(--color-success)]/10',
@@ -42,7 +43,6 @@ export const RARITY_BG_COLORS: Record<string, string> = {
   legendary: 'bg-[var(--mana-light)]/10',
   mythic: 'bg-[var(--mana-dark)]/10',
 };
-
 export const RARITY_TEXT_COLORS: Record<string, string> = {
   common: 'text-[var(--text-secondary)]',
   uncommon: 'text-[var(--color-success)]',
@@ -61,7 +61,7 @@ const SLOT_ICONS: Record<EquipmentSlot, React.ElementType> = {
   ),
   offHand: () => (
     <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2">
-      <path d="M20 7H9a2 2 0 01-2-2V4a2 2 0 012-2h5l3 6-3 6h-5a2 2 0 00-2 2v4a2 2 0 002 2h7l3 6-3 6H4a2 2 0 01-2-2v-2" />
+      <path d="M20 7H9a2 2 0 01-2-2V4a2 2 0 012-2h5l3 6-3 6h-5a2 2 0 01-2 2v4a2 2 0 002 2h7l3 6-3 6H4a2 2 0 01-2-2v-2" />
     </svg>
   ),
   head: () => (
@@ -114,44 +114,57 @@ const SLOT_GROUPS: SlotGroup[] = [
   { label: 'Accessories', slots: ['accessory1', 'accessory2'] },
 ];
 
-export function EquipmentTab({ store }: { store: GameStore }) {
+export function EquipmentTab() {
   const showToast = useGameToast();
   const [selectedSlot, setSelectedSlot] = useState<EquipmentSlot | null>(null);
   const [deleteConfirm, setDeleteConfirm] = useState<{ instanceId: string; name: string } | null>(null);
 
+  // Use modular store directly
+  const equippedInstances = useCombatStore((s) => s.equippedInstances);
+  const equipmentInstances = useCombatStore((s) => s.equipmentInstances);
+  
+  // Guard against undefined during initialization
+  if (!equippedInstances || !equipmentInstances) {
+    return (
+      <div className="p-4 text-center text-[var(--text-muted)]">
+        Loading equipment data...
+      </div>
+    );
+  }
+
   // Get unequipped items
   const equippedIds = useMemo(() =>
-    new Set(Object.values(store.equippedInstances).filter(Boolean)),
-    [store.equippedInstances]
+    new Set(Object.values(equippedInstances).filter(Boolean)),
+    [equippedInstances]
   );
 
   const unequippedItems = useMemo(() =>
-    Object.values(store.equipmentInstances).filter(
+    Object.values(equipmentInstances).filter(
       (inst) => !equippedIds.has(inst.instanceId)
     ),
-    [store.equipmentInstances, equippedIds]
+    [equipmentInstances, equippedIds]
   );
 
   // Equip an item to a slot
   const handleEquip = (instanceId: string, slot: EquipmentSlot) => {
-    const instance = store.equipmentInstances[instanceId];
-    store.equipItem(instanceId, slot);
+    const instance = equipmentInstances[instanceId];
+    equipItem(instanceId, slot, useCombatStore.getState, (fn) => useCombatStore.setState(fn));
     setSelectedSlot(null);
     showToast('success', 'Item Equipped', `${instance?.name || 'Item'} equipped to ${SLOT_NAMES[slot]}`);
   };
 
   // Unequip from a slot
   const handleUnequip = (slot: EquipmentSlot) => {
-    const instanceId = store.equippedInstances[slot];
-    const instance = instanceId ? store.equipmentInstances[instanceId] : null;
-    store.unequipItem(slot);
+    const instanceId = equippedInstances[slot];
+    const instance = instanceId ? equipmentInstances[instanceId] : null;
+    unequipItem(slot, useCombatStore.getState, (fn) => useCombatStore.setState(fn));
     showToast('success', 'Item Unequipped', `${instance?.name || 'Item'} removed from ${SLOT_NAMES[slot]}`);
   };
 
   // Check if a slot is blocked by a 2-handed weapon
   const isSlotBlocked = (slot: EquipmentSlot): boolean => {
-    if (slot === 'offHand' && store.equippedInstances.mainHand) {
-      const mainHandInstance = store.equipmentInstances[store.equippedInstances.mainHand];
+    if (slot === 'offHand' && equippedInstances.mainHand) {
+      const mainHandInstance = equipmentInstances[equippedInstances.mainHand];
       if (!mainHandInstance) return false;
       const mainHandType = EQUIPMENT_TYPES[mainHandInstance.typeId];
       return mainHandType?.twoHanded === true;
@@ -189,7 +202,7 @@ export function EquipmentTab({ store }: { store: GameStore }) {
 
   // Check if an instance is currently equipped
   const isEquipped = (instanceId: string): boolean =>
-    Object.values(store.equippedInstances).includes(instanceId);
+    Object.values(equippedInstances).includes(instanceId);
 
   // Get all slots an item type can be equipped to
   const getEquippableSlots = (typeId: string): EquipmentSlot[] => {
@@ -208,12 +221,15 @@ export function EquipmentTab({ store }: { store: GameStore }) {
 
   const confirmDelete = () => {
     if (deleteConfirm) {
-      store.deleteEquipmentInstance(deleteConfirm.instanceId);
+      deleteEquipmentInstance(deleteConfirm.instanceId, useCombatStore.getState, (fn) => useCombatStore.setState(fn));
       showToast('success', 'Item Discarded', `${deleteConfirm.name} has been removed from inventory`);
       setDeleteConfirm(null);
     }
   };
 
+  // Get unified effects for equipment stats
+  const unifiedEffects = useCombatStore((s) => s.equipmentInstances) ? getUnifiedEffects({ equipmentInstances, equippedInstances }) : null;
+
   return (
     <div className="space-y-4 max-w-full overflow-x-hidden">
       {/* Equipment Slots */}
@@ -222,17 +238,20 @@ export function EquipmentTab({ store }: { store: GameStore }) {
           title="Equipped Gear"
           action={
             <span className="text-xs text-[var(--text-muted)]">
-              {Object.values(store.equippedInstances).filter(Boolean).length} / {EQUIPMENT_SLOTS.length} slots filled
+              {Object.values(equippedInstances).filter(Boolean).length} / {EQUIPMENT_SLOTS.length} slots filled
             </span>
           }
         />
         <EquipmentSlotGrid
-          store={store}
+          equippedInstances={equippedInstances}
+          equipmentInstances={equipmentInstances}
           selectedSlot={selectedSlot}
           onSlotClick={setSelectedSlot}
           onUnequip={handleUnequip}
           isSlotBlocked={isSlotBlocked}
           SLOT_GROUPS={SLOT_GROUPS}
+          SLOT_NAMES={SLOT_NAMES}
+          SLOT_ICONS={SLOT_ICONS}
         />
       </GameCard>
 
@@ -247,8 +266,8 @@ export function EquipmentTab({ store }: { store: GameStore }) {
           </div>
         ) : (
           <EquipmentInventory
-            store={store}
             unequippedItems={unequippedItems}
+            equipmentInstances={equipmentInstances}
             onEquip={handleEquip}
             onDelete={handleDelete}
             getEquippableSlots={getEquippableSlots}
@@ -264,7 +283,7 @@ export function EquipmentTab({ store }: { store: GameStore }) {
         <div className="grid grid-cols-2 sm:grid-cols-4 gap-3">
           <div className="p-3 bg-[var(--bg-sunken)]/50 rounded text-center">
             <div className="text-2xl font-bold text-[var(--mana-light)] font-[var(--font-mono)]">
-              {Object.values(store.equipmentInstances).length}
+              {Object.values(equipmentInstances).length}
             </div>
             <div className="text-xs text-[var(--text-muted)]">Total Items</div>
           </div>
@@ -282,7 +301,7 @@ export function EquipmentTab({ store }: { store: GameStore }) {
           </div>
           <div className="p-3 bg-[var(--bg-sunken)]/50 rounded text-center">
             <div className="text-2xl font-bold text-[var(--mana-stellar)] font-[var(--font-mono)]">
-              {Object.values(store.equipmentInstances).reduce(
+              {Object.values(equipmentInstances).reduce(
                 (sum, inst) => sum + inst.enchantments.length,
                 0
               )}
@@ -300,8 +319,9 @@ export function EquipmentTab({ store }: { store: GameStore }) {
           </div>
           <div>
             {(() => {
-              const unifiedEffects = getUnifiedEffects(store);
-              const enchantPower = unifiedEffects.enchantmentPowerMultiplier || 1;
+              const effects = unifiedEffects;
+              if (!effects) return null;
+              const enchantPower = effects.enchantmentPowerMultiplier || 1;
               return (
                 <>
                   <StatRow 
@@ -323,13 +343,16 @@ export function EquipmentTab({ store }: { store: GameStore }) {
           <div className="text-sm text-[var(--text-muted)] mb-2">Active Effects from Equipment:</div>
           <div className="flex flex-wrap gap-2">
             {(() => {
-              const effects = store.getEquipmentEffects();
-              const effectEntries = Object.entries(effects).filter(([, v]) => v > 0);
-
+              const effects = unifiedEffects;
+              if (!effects?.equipmentEffects) {
+                return <span className="text-[var(--text-muted)] text-sm">No active effects</span>;
+              }
+              const effectEntries = Object.entries(effects.equipmentEffects).filter(([, v]) => v > 0);
+              
               if (effectEntries.length === 0) {
                 return <span className="text-[var(--text-muted)] text-sm">No active effects</span>;
               }
-
+              
               return effectEntries.map(([stat, value]) => (
                 <Badge key={stat} variant="outline" className="text-xs border-[var(--border-default)] text-[var(--text-secondary)]">
                   {stat}: +{fmt(value)}