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/lib/game/crafting-actions/computed-getters.ts

@@ -7,7 +7,7 @@ export function getEquipmentSpells(get: () => GameState): string[] {
   const state = get();
   const spells: string[] = [];
 
-  for (const instanceId of Object.values(state.equippedInstances)) {
+  for (const instanceId of Object.values(state.equippedInstances || {})) {
     if (!instanceId) continue;
     const instance = state.equipmentInstances[instanceId];
     if (!instance) continue;
@@ -27,7 +27,7 @@ export function getEquipmentEffects(get: () => GameState): Record<string, number
   const state = get();
   const effects: Record<string, number> = {};
 
-  for (const instanceId of Object.values(state.equippedInstances)) {
+  for (const instanceId of Object.values(state.equippedInstances || {})) {
     if (!instanceId) continue;
     const instance = state.equipmentInstances[instanceId];
     if (!instance) continue;

src/lib/game/crafting-loot.ts

@@ -28,7 +28,7 @@ export function getUniqueMaterialCount(inventory: LootInventory): number {
 
 // Get total material stacks (sum of all quantities)
 export function getTotalMaterialStacks(inventory: LootInventory): number {
-  return Object.values(inventory.materials).reduce((sum, qty) => sum + qty, 0);
+  return Object.values(inventory.materials || {}).reduce((sum, qty) => sum + qty, 0);
 }
 
 // ─── Inventory Modifications ────────────────────────────────────────────────
@@ -265,7 +265,7 @@ export interface InventoryStats {
 
 export function getInventoryStats(inventory: LootInventory): InventoryStats {
   const totalUniqueMaterials = Object.keys(inventory.materials).length;
-  const totalMaterialStacks = Object.values(inventory.materials).reduce((sum, qty) => sum + qty, 0);
+  const totalMaterialStacks = Object.values(inventory.materials || {}).reduce((sum, qty) => sum + qty, 0);
   const totalBlueprints = inventory.blueprints.length;
 
   return {

src/lib/game/effects.ts

@@ -35,7 +35,7 @@ export function computeEquipmentEffects(
   const specials = new Set<string>();
 
   // Iterate through all equipped items
-  for (const instanceId of Object.values(equippedInstances)) {
+  for (const instanceId of Object.values(equippedInstances || {})) {
     if (!instanceId) continue;
     const instance = equipmentInstances[instanceId];
     if (!instance) continue;
@@ -172,8 +172,8 @@ export function getUnifiedEffects(state: Pick<GameState, 'skillUpgrades' | 'skil
   return computeAllEffects(
     state.skillUpgrades || {},
     state.skillTiers || {},
-    state.equipmentInstances,
-    state.equippedInstances
+    state.equipmentInstances || {},
+    state.equippedInstances || {}
   );
 }
 

src/lib/game/effects.ts.fix

@@ -0,0 +1,12 @@
+
+/**
+ * Helper to get unified effects from game state
+ */
+export function getUnifiedEffects(state: Pick<GameState, 'skillUpgrades' | 'skillTiers' | 'equipmentInstances' | 'equippedInstances'>): UnifiedEffects {
+  return computeAllEffects(
+    state.skillUpgrades || {},
+    state.skillTiers || {},
+    state.equipmentInstances || {},
+    state.equippedInstances || {}
+  );
+}

src/lib/game/utils/combat-utils.ts

@@ -237,7 +237,7 @@ export function getActiveEquipmentSpells(
   equippedInstances: Record<string, string | null>,
   equipmentInstances: Record<string, EquipmentInstance>
 ): ActiveEquipmentSpell[] {
-  const equippedIds = Object.values(equippedInstances).filter((id): id is string => id !== null);
+  const equippedIds = Object.values(equippedInstances || {}).filter((id): id is string => id !== null);
   const spells: ActiveEquipmentSpell[] = [];
   
   for (const id of equippedIds) {