Refactor large files into modular components

- Refactored page.tsx (613→252 lines) with GameOverScreen and LeftPanel extracted
- Refactored StatsTab.tsx (584→92 lines) with section components
- Refactored SkillsTab.tsx (434→54 lines) with sub-components
- Created modular structure for GameContext, LootInventory, and other components
- All extracted components organized into feature directories

src/lib/game/data/equipment/hands.ts

@@ -0,0 +1,39 @@
+// ─── Hands Equipment Types ─────────────────────────────────────────
+
+import type { EquipmentType } from './types';
+
+export const HANDS_EQUIPMENT: Record<string, EquipmentType> = {
+  // ─── Hands ───────────────────────────────────────────────────────
+  civilianGloves: {
+    id: 'civilianGloves',
+    name: 'Civilian Gloves',
+    category: 'hands',
+    slot: 'hands',
+    baseCapacity: 20,
+    description: 'Simple cloth gloves. Minimal magical capacity.',
+  },
+  apprenticeGloves: {
+    id: 'apprenticeGloves',
+    name: 'Apprentice Gloves',
+    category: 'hands',
+    slot: 'hands',
+    baseCapacity: 30,
+    description: 'Basic gloves for handling magical components.',
+  },
+  spellweaveGloves: {
+    id: 'spellweaveGloves',
+    name: 'Spellweave Gloves',
+    category: 'hands',
+    slot: 'hands',
+    baseCapacity: 40,
+    description: 'Gloves woven with mana-conductive threads.',
+  },
+  combatGauntlets: {
+    id: 'combatGauntlets',
+    name: 'Combat Gauntlets',
+    category: 'hands',
+    slot: 'hands',
+    baseCapacity: 35,
+    description: 'Armored gauntlets for battle mages.',
+  },
+};