refactor: resolve structural inconsistencies and dead code

- Fix broken barrel exports in components/game/index.ts
- Remove skill system from stores (gameStore, gameActions, gameLoopActions, gameHooks, craftingStore, combat)
- Remove skill system from components (page.tsx, LeftPanel, StatsTab, SpellsTab, EnchantmentDesigner, EnchantmentPreparer, GameContext/Provider)
- Delete dead code: stats/ directory, attunements/ directory, layout/ Header+TabBar, shared/ StudyProgress+UpgradeDialog duplicates, effects.ts.fix, study-slice.ts, navigation-slice.ts
- Delete legacy store/ and store-modules/ directories, redirect remaining callers
- Merge root formatting.ts into utils/formatting.ts
- Move effects files (dynamic-compute, upgrade-effects, special-effects, upgrade-effects.types) into effects/ directory
- Move debug-context.tsx into components/game/debug/
- Create tabs/index.ts barrel for tab components
- Fix page.tsx lazy imports to use tabs barrel
- Fix all broken import paths across codebase
- Remove SKILLS_DEF and skill-evolution references
- Trim store.ts to under 400 lines by removing dead skill actions

src/app/components/LeftPanel.tsx

@@ -8,7 +8,7 @@ import { ManaDisplay } from '@/components/game';
 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 { DebugName } from '@/components/game/debug/debug-context';
 import { useGameStore, useManaStore, useCombatStore, useCraftingStore, usePrestigeStore } from '@/lib/game/stores';
 import { getUnifiedEffects } from '@/lib/game/effects';
 import { getMeditationBonus, getIncursionStrength } from '@/lib/game/stores';

src/app/layout.tsx

@@ -3,7 +3,7 @@ import localFont from "next/font/local";
 import "./globals.css";
 import { Toaster } from "@/components/ui/toaster";
 import { GameToaster } from "@/components/game/GameToast";
-import { DebugProvider } from "@/lib/game/debug-context";
+import { DebugProvider } from "@/components/game/debug/debug-context";
 
 const geistSans = localFont({
   src: '../../public/fonts/GeistVF.woff',

src/app/page.tsx

@@ -31,24 +31,16 @@ import { ScrollArea } from '@/components/ui/scroll-area';
 
 import { TooltipProvider } from '@/components/ui/tooltip';
 import { ErrorBoundary } from '@/components/ErrorBoundary';
-import { DebugName } from '@/lib/game/debug-context';
+import { DebugName } from '@/components/game/debug/debug-context';
 
 // Import extracted components
 import { GameOverScreen } from './components/GameOverScreen';
 import { LeftPanel } from './components/LeftPanel';
 
 // Lazy load tab components
-const SpireTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.SpireTab })));
+const DisciplinesTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.DisciplinesTab })));
 const SpellsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.SpellsTab })));
-
 const StatsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.StatsTab })));
-const EquipmentTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.EquipmentTab })));
-const AttunementsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.AttunementsTab })));
-const DebugTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.DebugTab })));
-const LootTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.LootTab })));
-const AchievementsTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.AchievementsTab })));
-const GolemancyTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.GolemancyTab })));
-const CraftingTab = lazy(() => import('@/components/game/tabs').then(module => ({ default: module.CraftingTab })));
 
 const TabLoadingFallback = () => <div className="p-4 text-center text-gray-400">Loading...</div>;
 
@@ -125,7 +117,7 @@ function GrimoireTab() {
 
 export default function ManaLoopGame() {
   const [selectedManaType, setSelectedManaType] = useState<string>('');
-  const [activeTab, setActiveTab] = useState('spire');
+  const [activeTab, setActiveTab] = useState('spells');
 
   // ALL hooks must be called before any conditional returns
   const day = useGameStore((s) => s.day);
@@ -208,7 +200,7 @@ export default function ManaLoopGame() {
   // React to spireMode changes from combat store
   useEffect(() => {
     if (spireMode) {
-      setActiveTab('spire'); // eslint-disable-line react-hooks/set-state-in-effect
+      setActiveTab('spells'); // eslint-disable-line react-hooks/set-state-in-effect
     }
   }, [spireMode]);
 
@@ -240,44 +232,12 @@ export default function ManaLoopGame() {
             <div className="flex-1 min-w-0">
               <Tabs value={activeTab} onValueChange={setActiveTab}>
                 <TabsList className="flex flex-wrap gap-1 w-full mb-4 h-auto">
-                  <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="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>
-                  <TabsTrigger value="loot" className="text-xs px-2 py-1">💎 Loot</TabsTrigger>
-                  <TabsTrigger value="achievements" className="text-xs px-2 py-1">🏆 Achieve</TabsTrigger>
-                  
                   <TabsTrigger value="stats" className="text-xs px-2 py-1">📊 Stats</TabsTrigger>
-                  <TabsTrigger value="debug" className="text-xs px-2 py-1">🐛 Debug</TabsTrigger>
+                  <TabsTrigger value="disciplines" className="text-xs px-2 py-1">📚 Disciplines</TabsTrigger>
                   <TabsTrigger value="grimoire" className="text-xs px-2 py-1">📖 Grimoire</TabsTrigger>
                 </TabsList>
 
-                <TabsContent value="spire">
-                  <ErrorBoundary fallback={<div className="p-4 text-red-400">spire tab failed to load.</div>}>
-                    <Suspense fallback={<TabLoadingFallback />}>
-                      <SpireTab simpleMode={spireMode} />
-                    </Suspense>
-                  </ErrorBoundary>
-                </TabsContent>
-
-                <TabsContent value="attunements">
-                  <ErrorBoundary fallback={<div className="p-4 text-red-400">attunements tab failed to load.</div>}>
-                    <Suspense fallback={<TabLoadingFallback />}>
-                      <AttunementsTab />
-                    </Suspense>
-                  </ErrorBoundary>
-                </TabsContent>
-
-                <TabsContent value="golemancy">
-                  <ErrorBoundary fallback={<div className="p-4 text-red-400">golemancy tab failed to load.</div>}>
-                    <Suspense fallback={<TabLoadingFallback />}>
-                      <GolemancyTab />
-                    </Suspense>
-                  </ErrorBoundary>
-                </TabsContent>
-
                 <TabsContent value="spells">
                   <ErrorBoundary fallback={<div className="p-4 text-red-400">spells tab failed to load.</div>}>
                     <Suspense fallback={<TabLoadingFallback />}>
@@ -286,40 +246,6 @@ export default function ManaLoopGame() {
                   </ErrorBoundary>
                 </TabsContent>
 
-                <TabsContent value="equipment">
-                  <ErrorBoundary fallback={<div className="p-4 text-red-400">equipment tab failed to load.</div>}>
-                    <Suspense fallback={<TabLoadingFallback />}>
-                      <EquipmentTab />
-                    </Suspense>
-                  </ErrorBoundary>
-                </TabsContent>
-
-                <TabsContent value="crafting">
-                  <ErrorBoundary fallback={<div className="p-4 text-red-400">crafting tab failed to load.</div>}>
-                    <Suspense fallback={<TabLoadingFallback />}>
-                      <CraftingTab />
-                    </Suspense>
-                  </ErrorBoundary>
-                </TabsContent>
-
-                <TabsContent value="loot">
-                  <ErrorBoundary fallback={<div className="p-4 text-red-400">loot tab failed to load.</div>}>
-                    <Suspense fallback={<TabLoadingFallback />}>
-                      <LootTab />
-                    </Suspense>
-                  </ErrorBoundary>
-                </TabsContent>
-
-                <TabsContent value="achievements">
-                  <ErrorBoundary fallback={<div className="p-4 text-red-400">achievements tab failed to load.</div>}>
-                    <Suspense fallback={<TabLoadingFallback />}>
-                      <AchievementsTab />
-                    </Suspense>
-                  </ErrorBoundary>
-                </TabsContent>
-
-                
-
                 <TabsContent value="stats">
                   <ErrorBoundary fallback={<div className="p-4 text-red-400">stats tab failed to load.</div>}>
                     <Suspense fallback={<TabLoadingFallback />}>
@@ -328,10 +254,10 @@ export default function ManaLoopGame() {
                   </ErrorBoundary>
                 </TabsContent>
 
-                <TabsContent value="debug">
-                  <ErrorBoundary fallback={<div className="p-4 text-red-400">debug tab failed to load.</div>}>
+                <TabsContent value="disciplines">
+                  <ErrorBoundary fallback={<div className="p-4 text-red-400">disciplines tab failed to load.</div>}>
                     <Suspense fallback={<TabLoadingFallback />}>
-                      <DebugTab />
+                      <DisciplinesTab />
                     </Suspense>
                   </ErrorBoundary>
                 </TabsContent>