Skip zone mobile equipment with no item template

CZONE lists 24670 and 6796 on three trainers, but no cache template has
them; new Item() threw a NullPointerException during the trainer parity.
The DB import dropped them too.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/engine/objects/MobBase.java

@@ -16,6 +16,7 @@ import engine.loot.BootySetEntry;
 import engine.math.Vector3fImmutable;
 import engine.mbEnums;
 import engine.parsers.cache.CacheParserUtil;
+import engine.parsers.objects.CObjectTemplate;
 import engine.parsers.objects.CZoneDrop;
 import engine.parsers.objects.RuneTemplate;
 import engine.server.MBServerStatics;
@@ -166,6 +167,12 @@ public class MobBase extends AbstractGameObject {
 
         for (CZoneDrop equipmentEntry : equipmentList) {
 
+            // CZONE lists a few IDs no cache template has (24670, 6796); the DB import dropped them too
+            if (CObjectTemplate.lookup(equipmentEntry.item_id) == null) {
+                Logger.warn("Zone mobile equipment " + equipmentEntry.item_id + " has no item template; skipped");
+                continue;
+            }
+
             Item item = new Item(equipmentEntry.item_id);
 
             if (item.template.getItemEqSlotsOr().isEmpty())