Enhance EntityMetadataUpdateProcessor to ensure container/storage metadata is always synchronized to visible players and allow updates from any player for such metadata.

NitroxServer/Communication/Packets/Processors/EntityMetadataUpdateProcessor.cs

@@ -39,19 +39,33 @@ public class EntityMetadataUpdateProcessor : AuthenticatedPacketProcessor<Entity
         {
             bool updateVisibleToPlayer = player.CanSee(entity);
             
-            if (player != sendingPlayer && updateVisibleToPlayer)
+            // Always sync container/storage metadata to all visible players
+            bool isContainerMetadata = IsContainerRelatedMetadata(packet.NewValue);
+
+            if (player != sendingPlayer && (updateVisibleToPlayer || isContainerMetadata))
             {
                 player.SendPacket(packet);
             }
         }
     }
 
+    private bool IsContainerRelatedMetadata(EntityMetadata metadata)
+    {
+        // Check if metadata is related to containers/storage
+        return metadata.GetType().Name.Contains("Container") || 
+               metadata.GetType().Name.Contains("Storage") ||
+               metadata.GetType().Name.Contains("Inventory");
+    }
+
     private bool TryProcessMetadata(Player sendingPlayer, Entity entity, EntityMetadata metadata)
     {
         return metadata switch
         {
             PlayerMetadata playerMetadata => ProcessPlayerMetadata(sendingPlayer, entity, playerMetadata),
             
+            // Always allow container/storage metadata updates for proper sync
+            _ when IsContainerRelatedMetadata(metadata) => true,
+            
             // Allow metadata updates from any player by default
             _ => true
         };