refactor: split bloated state types into State + Actions interfaces (issue #102)

- CombatState: split into CombatState (data) + CombatActions + CombatStore
- PrestigeState: split into PrestigeState (data) + PrestigeActions + PrestigeStore
- ManaState: split into ManaState (data) + ManaActions + ManaStore
- GameState: deprecated, removed from barrel exports
- crafting-actions: updated to use CraftingState instead of GameState
- combat-utils/mana-utils: replaced Pick<GameState,...> with focused interfaces
- DisciplineCardProps: split into Definition + Runtime + Callbacks
- stores/index.ts: now exports both State and Actions types

src/components/game/tabs/DisciplinesTab.tsx

@@ -8,6 +8,8 @@ import { invokerDisciplines } from '@/lib/game/data/disciplines/invoker';
 import { calculateStatBonus, calculateManaDrain } from '@/lib/game/utils/discipline-math';
 import clsx from 'clsx';
 
+// ─── Attunement Tabs ─────────────────────────────────────────────────────────
+
 interface AttunementTab {
   key: string;
   label: string;
@@ -21,7 +23,9 @@ const ATTUNEMENT_TABS: AttunementTab[] = [
   { key: 'invoker', label: 'Invoker', items: invokerDisciplines },
 ];
 
-interface DisciplineCardProps {
+// ─── Discipline Card Props (split from monolithic 15-field interface) ────────
+
+export interface DisciplineCardDefinition {
   id: string;
   name: string;
   description: string;
@@ -33,32 +37,36 @@ interface DisciplineCardProps {
   drainBase: number;
   difficultyFactor: number;
   scalingFactor: number;
+}
+
+export interface DisciplineCardRuntime {
   xp: number;
   paused: boolean;
   concurrentLimit: number;
+}
+
+export interface DisciplineCardCallbacks {
   onToggle: (id: string, paused: boolean) => void;
 }
 
-const DisciplineCard: React.FC<DisciplineCardProps> = ({
-  id,
-  name,
-  description,
-  perkThresholds,
-  perkValues,
-  perkTypes,
-  statBonus,
-  baseValue,
-  drainBase,
-  difficultyFactor,
-  scalingFactor,
-  xp,
-  paused,
-  concurrentLimit,
-  onToggle,
-}) => {
+interface DisciplineCardProps {
+  definition: DisciplineCardDefinition;
+  runtime: DisciplineCardRuntime;
+  callbacks: DisciplineCardCallbacks;
+}
+
+// ─── Discipline Card Component ───────────────────────────────────────────────
+
+const DisciplineCard: React.FC<DisciplineCardProps> = ({ definition, runtime, callbacks }) => {
+  const {
+    id, name, description, perkThresholds, perkValues, perkTypes,
+    statBonus, baseValue, drainBase, difficultyFactor, scalingFactor,
+  } = definition;
+  const { xp, paused: isPaused, concurrentLimit } = runtime;
+  const { onToggle } = callbacks;
+
   const displayXp = xp;
   const progressPercent = Math.min(displayXp / Math.max(1, concurrentLimit * 100), 100);
-  const isPaused = paused;
 
   const activeStatBonus = calculateStatBonus(baseValue, displayXp, scalingFactor);
   const estimatedDrain = calculateManaDrain(drainBase, displayXp, difficultyFactor);
@@ -134,6 +142,8 @@ const DisciplineCard: React.FC<DisciplineCardProps> = ({
   );
 };
 
+// ─── Disciplines Tab ─────────────────────────────────────────────────────────
+
 export const DisciplinesTab: React.FC = () => {
   const activeIds = useDisciplineStore((s) => s.activeIds);
   const concurrentLimit = useDisciplineStore((s) => s.concurrentLimit);
@@ -194,21 +204,27 @@ export const DisciplinesTab: React.FC = () => {
           return (
             <DisciplineCard
               key={disc.id}
-              id={disc.id}
-              name={disc.name}
-              description={disc.description}
-              perkThresholds={disc.perks?.map((p) => p.threshold)}
-              perkValues={disc.perks?.map((p) => p.value)}
-              perkTypes={disc.perks?.map((p) => p.type)}
-              statBonus={disc.statBonus.stat}
-              baseValue={disc.statBonus.baseValue}
-              drainBase={disc.drainBase}
-              difficultyFactor={disc.difficultyFactor}
-              scalingFactor={disc.scalingFactor}
-              xp={discState.xp}
-              paused={discState.paused}
-              concurrentLimit={concurrentLimit}
-              onToggle={handleToggle}
+              definition={{
+                id: disc.id,
+                name: disc.name,
+                description: disc.description,
+                perkThresholds: disc.perks?.map((p) => p.threshold),
+                perkValues: disc.perks?.map((p) => p.value),
+                perkTypes: disc.perks?.map((p) => p.type),
+                statBonus: disc.statBonus.stat,
+                baseValue: disc.statBonus.baseValue,
+                drainBase: disc.drainBase,
+                difficultyFactor: disc.difficultyFactor,
+                scalingFactor: disc.scalingFactor,
+              }}
+              runtime={{
+                xp: discState.xp,
+                paused: discState.paused,
+                concurrentLimit,
+              }}
+              callbacks={{
+                onToggle: handleToggle,
+              }}
             />
           );
         })}

src/components/game/tabs/EquipmentTab.tsx

@@ -2,7 +2,6 @@
 
 import { useState, useEffect, useCallback, useMemo } from 'react';
 import { useCraftingStore } from '@/lib/game/stores/craftingStore';
-import { equipItem, unequipItem, deleteEquipmentInstance } from '@/lib/game/crafting-actions/equipment-actions';
 import type { EquipmentSlot } from '@/lib/game/types';
 import { DebugName } from '@/components/game/debug/debug-context';
 import { EquipmentSlotGrid } from './EquipmentTab/EquipmentSlotGrid';