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/devcmd/cmds/PrintBonusesCmd.java

@@ -34,7 +34,7 @@ public class PrintBonusesCmd extends AbstractDevCmd {
                 type = "Item";
                 tar = (Item) target;
                 ItemTemplate template = ItemTemplate.templates.get(((Item) tar).templateID);
-                name = template.item_base_name;
+                name = template.cacheTemplate.getItemBaseName();
             } else if (target instanceof AbstractCharacter) {
                 tar = (AbstractCharacter) target;
                 name = ((AbstractCharacter) tar).getFirstName();