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/PrintInventoryCmd.java

@@ -86,7 +86,7 @@ public class PrintInventoryCmd extends AbstractDevCmd {
                     int charges = item.chargesRemaining;
                     chargeInfo = " charges: " + charges + '/' + chargeMax;
                 }
-                throwbackInfo(pc, "    " + template.item_base_name + ", count: " + item.getNumOfItems() + chargeInfo);
+                throwbackInfo(pc, "    " + template.cacheTemplate.getItemBaseName() + ", count: " + item.getNumOfItems() + chargeInfo);
             } else
                 goldCount += item.getNumOfItems();
         }