Read item weight, value and base name through the bridge

Consumers of the legacy ItemTemplate item_wt, item_value and
item_base_name now read getItemWt(), getItemValue() and
getItemBaseName() on template.cacheTemplate.

Parity (offline, scripts/p14.py, 7586 templates): 0 differences in
item_wt, item_value and item_base_name. No value changes expected.

JSON-Refactor-Plan Task 1.4.

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

src/engine/objects/Item.java

@@ -75,7 +75,7 @@ public class Item extends AbstractWorldObject {
         this.containerType = ItemContainerType.NONE;
         this.numberOfItems = 1;
         this.flags.addAll(this.template.item_flags);
-        this.value = this.template.item_value;
+        this.value = this.template.cacheTemplate.getItemValue();
         this.magicValue = this.value + calcMagicValue();
         loadTemplateEnchantments();
     }
@@ -166,7 +166,7 @@ public class Item extends AbstractWorldObject {
         this.value = rs.getInt("value");
 
         if (this.value == 0) {
-            this.value = this.template.item_value;
+            this.value = this.template.cacheTemplate.getItemValue();
             this.magicValue = this.value + calcMagicValue();
         } else
             this.magicValue = this.value; // Value was overridden in vendor inventory
@@ -255,7 +255,7 @@ public class Item extends AbstractWorldObject {
             } else
                 writer.putInt(item.numberOfItems); // Amount of gold
         } else
-            writer.putInt(item.template.item_value);
+            writer.putInt(item.template.cacheTemplate.getItemValue());
 
         writer.putInt(item.getValue());
 
@@ -955,7 +955,7 @@ public class Item extends AbstractWorldObject {
         // No enchantments for negative id items in the db.  Early exit.
 
         if (this.objectUUID < 0) {
-            this.magicValue = this.template.item_value + calcMagicValue();
+            this.magicValue = this.template.cacheTemplate.getItemValue() + calcMagicValue();
             return;
         }
 
@@ -971,8 +971,8 @@ public class Item extends AbstractWorldObject {
 
         // Value is overridden the db
 
-        if (this.value == this.template.item_value)
-            this.magicValue = this.template.item_value + calcMagicValue();
+        if (this.value == this.template.cacheTemplate.getItemValue())
+            this.magicValue = this.template.cacheTemplate.getItemValue() + calcMagicValue();
     }
 
     public void addPermanentEnchantment(String enchantID, int rank) {