fix: Object.values null safety + Docker dev build

- Change Dockerfile to use development build (better error messages)
- Add || {} fallbacks to all Object.values() calls accessing state
- Fixes "Cannot convert undefined or null to object" browser error during SSR/hydration
- Verified TypeScript compilation and Next.js build successful

Files modified:
- Dockerfile
- src/app/page.tsx
- src/components/game/tabs/StatsTab.tsx
- src/components/game/StatsTab/LoopStatsSection.tsx
- src/components/game/StatsTab/ElementStatsSection.tsx
- src/components/game/tabs/AttunementsTab.tsx
- src/components/game/tabs/GolemancyTab.tsx
- src/lib/game/effects.ts
- src/lib/game/utils/combat-utils.ts
- src/lib/game/crafting-loot.ts
- src/components/game/LootInventory/LootInventoryDisplay.tsx
- src/components/game/LootInventory/index.tsx
- src/components/game/crafting/EnchantmentDesigner/utils.ts

src/components/game/tabs/AttunementsTab.tsx

@@ -232,7 +232,7 @@ export function AttunementsTab({ store }: AttunementsTabProps) {
           </p>
           <div className="flex flex-wrap gap-2">
             {availableCategories.map(cat => {
-              const attunement = Object.values(ATTUNEMENTS_DEF).find(a => 
+              const attunement = Object.values(ATTUNEMENTS_DEF || {}).find(a => 
                 a.skillCategories.includes(cat) && attunements[a.id]?.active
               );
               return (