cleanup: delete computed-stats.ts shim and store/index.ts

- Delete src/lib/game/computed-stats.ts (root-level re-export shim)
- Delete src/lib/game/store/index.ts (nothing imports from it)
- Update __tests__/computed-stats.test.ts to import from ../utils instead
- Clean up craftingStore.ts imports (remove unused useGameStore, CraftingApply)

Typecheck and lint pass (pre-existing DisciplinesTab.tsx errors unchanged)

src/app/components/LeftPanel.tsx

@@ -9,7 +9,7 @@ import { ActionButtons } from '@/components/game';
 import { AttunementStatus } from '@/components/game/AttunementStatus';
 import { ActivityLogPanel } from '@/components/game/ActivityLogPanel';
 import { DebugName } from '@/lib/game/debug-context';
-import { useGameStore, useManaStore, useSkillStore, useCombatStore, useCraftingStore, usePrestigeStore } from '@/lib/game/stores';
+import { useGameStore, useManaStore, useCombatStore, useCraftingStore, usePrestigeStore } from '@/lib/game/stores';
 import { getUnifiedEffects } from '@/lib/game/effects';
 import { getMeditationBonus, getIncursionStrength } from '@/lib/game/stores';
 import { computeTotalMaxMana, computeTotalRegen, computeTotalClickMana } from '@/lib/game/effects';
@@ -20,9 +20,6 @@ export function LeftPanel() {
   const rawMana = useManaStore((s) => s.rawMana);
   const elements = useManaStore((s) => s.elements);
   const meditateTicks = useManaStore((s) => s.meditateTicks);
-  const skills = useSkillStore((s) => s.skills);
-  const skillTiers = useSkillStore((s) => s.skillTiers);
-  const skillUpgrades = useSkillStore((s) => s.skillUpgrades);
   const prestigeUpgrades = usePrestigeStore((s) => s.prestigeUpgrades);
   const equippedInstances = useCraftingStore((s) => s.equippedInstances);
   const equipmentInstances = useCraftingStore((s) => s.equipmentInstances);
@@ -30,7 +27,6 @@ export function LeftPanel() {
   const spireMode = useCombatStore((s) => s.spireMode);
   const enterSpireMode = useCombatStore((s) => s.enterSpireMode);
   const currentAction = useCombatStore((s) => s.currentAction);
-  const currentStudyTarget = useSkillStore((s) => s.currentStudyTarget);
   const designProgress = useCraftingStore((s) => s.designProgress);
   const designProgress2 = useCraftingStore((s) => s.designProgress2);
   const preparationProgress = useCraftingStore((s) => s.preparationProgress);
@@ -56,11 +52,11 @@ export function LeftPanel() {
     return () => cancelAnimationFrame(animationFrameId);
   }, [isGathering, gatherMana]);
 
-  const upgradeEffects = getUnifiedEffects({ skillUpgrades, skillTiers, equippedInstances, equipmentInstances });
-  const maxMana = computeTotalMaxMana({ skills, prestigeUpgrades, skillUpgrades, skillTiers, equippedInstances, equipmentInstances }, upgradeEffects);
-  const baseRegen = computeTotalRegen({ skills, prestigeUpgrades, skillUpgrades, skillTiers, equippedInstances, equipmentInstances }, upgradeEffects);
-  const clickMana = computeTotalClickMana({ skills, skillUpgrades, skillTiers, equippedInstances, equipmentInstances }, upgradeEffects);
-  const meditationMultiplier = getMeditationBonus(meditateTicks, skills, upgradeEffects.meditationEfficiency);
+  const upgradeEffects = getUnifiedEffects({ skillUpgrades: {}, skillTiers: {}, equippedInstances, equipmentInstances });
+  const maxMana = computeTotalMaxMana({ skills: {}, prestigeUpgrades, skillUpgrades: {}, skillTiers: {}, equippedInstances, equipmentInstances }, upgradeEffects);
+  const baseRegen = computeTotalRegen({ skills: {}, prestigeUpgrades, skillUpgrades: {}, skillTiers: {}, equippedInstances, equipmentInstances }, upgradeEffects);
+  const clickMana = computeTotalClickMana({ skills: {}, skillUpgrades: {}, skillTiers: {}, equippedInstances, equipmentInstances }, upgradeEffects);
+  const meditationMultiplier = getMeditationBonus(meditateTicks, {}, upgradeEffects.meditationEfficiency);
   const incursionStrength = getIncursionStrength(useGameStore((s) => s.day), useGameStore((s) => s.hour));
   const effectiveRegen = baseRegen * (1 - incursionStrength) * meditationMultiplier;
 
@@ -84,7 +80,7 @@ export function LeftPanel() {
       {/* 2. Spire Entry */}
       {!spireMode && (
         <DebugName name="ClimbSpireButton">
-          <Button className="w-full bg-gradient-to-r from-amber-600 to-orange-600 hover:from-amber-700 hover:to-orange-700 text-white" size="lg" onClick={enterSpireMode}>
+          <Button className="w-full bg-gradient-to-r from-amber-600 to-orange-600 hover:from-amber-700 hover:to-orange-600 text-white" size="lg" onClick={enterSpireMode}>
             <Mountain className="w-5 h-5 mr-2" />
             Climb the Spire
           </Button>
@@ -98,7 +94,6 @@ export function LeftPanel() {
             <CardContent className="pt-3">
               <ActionButtons
                 currentAction={currentAction}
-                currentStudyTarget={currentStudyTarget as any}
                 designProgress={designProgress}
                 designProgress2={designProgress2}
                 preparationProgress={preparationProgress}
@@ -127,4 +122,4 @@ export function LeftPanel() {
       </DebugName>
     </div>
   );
-}
+}

src/app/page.tsx

@@ -1,14 +1,12 @@
 'use client';
 
 import { useEffect, useState, lazy, Suspense } from 'react';
-import type { JSX } from 'react';
 
 // Import from new modular stores
 import {
   useGameStore,
   useUIStore,
   useManaStore,
-  useSkillStore,
   useCombatStore,
   usePrestigeStore,
   useCraftingStore,
@@ -21,23 +19,16 @@ import {
 } from '@/lib/game/stores';
 import { useGameLoop } from '@/lib/game/stores/gameHooks';
 import { getUnifiedEffects } from '@/lib/game/effects';
-import {
-  getStudySpeedMultiplier,
-  getStudyCostMultiplier,
-  SPELLS_DEF,
-  ELEMENTS,
-  GUARDIANS,
-} from '@/lib/game/constants';
-import { getActiveEquipmentSpells, getTotalDPS } from '@/lib/game/computed-stats';
+import { SPELLS_DEF } from '@/lib/game/constants';
 import { TimeDisplay } from '@/components/game';
 import { hasSpecial, SPECIAL_EFFECTS } from '@/lib/game/effects';
 
-import { Button } from '@/components/ui/button';
+
 import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
-import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+
 import { Badge } from '@/components/ui/badge';
 import { ScrollArea } from '@/components/ui/scroll-area';
-import { RotateCcw, Mountain } from 'lucide-react';
+
 import { TooltipProvider } from '@/components/ui/tooltip';
 import { ErrorBoundary } from '@/components/ErrorBoundary';
 import { DebugName } from '@/lib/game/debug-context';
@@ -48,7 +39,6 @@ import { LeftPanel } from './components/LeftPanel';
 
 // Lazy load tab components
 const SpireTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.SpireTab })));
-const SkillsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.SkillsTab })));
 const SpellsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.SpellsTab })));
 
 const StatsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.StatsTab })));
@@ -143,10 +133,6 @@ export default function ManaLoopGame() {
   const initGame = useGameStore((s) => s.initGame);
   useGameLoop();
 
-  const skills = useSkillStore((s) => s.skills);
-  const skillTiers = useSkillStore((s) => s.skillTiers);
-  const skillUpgrades = useSkillStore((s) => s.skillUpgrades);
-
   const prestigeUpgrades = usePrestigeStore((s) => s.prestigeUpgrades);
   const insight = usePrestigeStore((s) => s.insight);
   const loopInsight = usePrestigeStore((s) => s.loopInsight);
@@ -154,8 +140,7 @@ export default function ManaLoopGame() {
   const rawMana = useManaStore((s) => s.rawMana);
   const meditateTicks = useManaStore((s) => s.meditateTicks);
 
-  const maxFloorReached = useCombatStore((s) => s.maxFloorReached);
-  const spells = useCombatStore((s) => s.spells);
+
   const spireMode = useCombatStore((s) => s.spireMode);
 
   const gameOver = useUIStore((s) => s.gameOver);
@@ -166,34 +151,34 @@ export default function ManaLoopGame() {
 
   // Derived state
   const upgradeEffects = getUnifiedEffects({
-    skillUpgrades,
-    skillTiers,
+    skillUpgrades: {},
+    skillTiers: {},
     equippedInstances,
     equipmentInstances
   });
 
   const maxMana = computeMaxMana({
-    skills,
+    skills: {},
     prestigeUpgrades,
-    skillUpgrades,
-    skillTiers
+    skillUpgrades: {},
+    skillTiers: {}
   }, upgradeEffects);
 
   const baseRegen = computeRegen({
-    skills,
+    skills: {},
     prestigeUpgrades,
-    skillUpgrades,
-    skillTiers
+    skillUpgrades: {},
+    skillTiers: {}
   }, upgradeEffects);
 
   const clickMana = computeClickMana({
-    skills,
+    skills: {},
     prestigeUpgrades,
-    skillUpgrades,
-    skillTiers
+    skillUpgrades: {},
+    skillTiers: {}
   });
 
-  const meditationMultiplier = getMeditationBonus(meditateTicks, skills, upgradeEffects.meditationEfficiency);
+  const meditationMultiplier = getMeditationBonus(meditateTicks, {}, upgradeEffects.meditationEfficiency);
   const incursionStrength = getIncursionStrength(day, hour);
 
   // Effective regen with incursion penalty
@@ -258,7 +243,6 @@ export default function ManaLoopGame() {
                   <TabsTrigger value="spire" className="text-xs px-2 py-1">⚔️ Spire</TabsTrigger>
                   <TabsTrigger value="attunements" className="text-xs px-2 py-1">✨ Attune</TabsTrigger>
                   <TabsTrigger value="golemancy" className="text-xs px-2 py-1">🗿 Golems</TabsTrigger>
-                  <TabsTrigger value="skills" className="text-xs px-2 py-1">📚 Skills</TabsTrigger>
                   <TabsTrigger value="spells" className="text-xs px-2 py-1">🔮 Spells</TabsTrigger>
                   <TabsTrigger value="equipment" className="text-xs px-2 py-1">🛡️ Gear</TabsTrigger>
                   <TabsTrigger value="crafting" className="text-xs px-2 py-1">🔧 Craft</TabsTrigger>
@@ -294,14 +278,6 @@ export default function ManaLoopGame() {
                   </ErrorBoundary>
                 </TabsContent>
 
-                <TabsContent value="skills">
-                  <ErrorBoundary fallback={<div className="p-4 text-red-400">skills tab failed to load.</div>}>
-                    <Suspense fallback={<TabLoadingFallback />}>
-                      <SkillsTab />
-                    </Suspense>
-                  </ErrorBoundary>
-                </TabsContent>
-
                 <TabsContent value="spells">
                   <ErrorBoundary fallback={<div className="p-4 text-red-400">spells tab failed to load.</div>}>
                     <Suspense fallback={<TabLoadingFallback />}>