Bridge legacy ItemTemplate to its cache template

Each engine.objects.ItemTemplate gets a cacheTemplate field, filled by
linkCacheTemplates() right after CObjectIndex.build() on both servers,
so consumers can move to CObjectTemplate one field at a time.

ParityCheck gains a static_item_templates comparator: a null bridge is
reported as missing in json, and obj_name and item_type are compared
through the interface to catch a wrong folder pick.

Import convention until the legacy class is removed (Task 1.8): the
legacy engine.objects.ItemTemplate keeps the plain import; the cache
class is always written engine.parsers.objects.ItemTemplate. Migrated
consumers should depend on CObjectTemplate instead.

JSON-Refactor-Plan Task 1.1. No consumers change; no values change.

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

src/engine/parsers/cache/ParityCheck.java

@@ -13,6 +13,7 @@ import engine.gameManager.DbManager;
 import engine.mbEnums;
 import engine.objects.AbstractGameObject;
 import engine.objects.BaseClass;
+import engine.objects.ItemTemplate;
 import engine.parsers.objects.RuneTemplate;
 import org.pmw.tinylog.Logger;
 
@@ -36,6 +37,7 @@ public class ParityCheck {
 
     static {
         register("static_rune_baseclass", ParityCheck::compareBaseClasses);
+        register("static_item_templates", ParityCheck::compareItemTemplates);
     }
 
     private ParityCheck(String table) {
@@ -115,4 +117,18 @@ public class ParityCheck {
             check.compareField(baseClass.getObjectUUID(), "name", baseClass.getName(), rune.obj_name);
         }
     }
+
+    // A wrong item_type means the bridge picked the wrong folder for an id found in more than one.
+
+    private static void compareItemTemplates(ParityCheck check) {
+
+        for (ItemTemplate template : ItemTemplate.templates.values()) {
+
+            if (!check.compareRow(template.template_id, template.cacheTemplate))
+                continue;
+
+            check.compareField(template.template_id, "obj_name", template.obj_name, template.cacheTemplate.getObjName());
+            check.compareField(template.template_id, "item_type", template.item_type, template.cacheTemplate.getItemType());
+        }
+    }
 }