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/gameManager/CombatManager.java

@@ -271,13 +271,13 @@ public enum CombatManager {
             if (weapon != null && !attacker.getObjectType().equals(mbEnums.GameObjectType.Mob)) {
                 //check if Out of Stamina
                 if (attacker.getObjectType().equals(mbEnums.GameObjectType.PlayerCharacter)) {
-                    if (attacker.getStamina() < (weapon.template.item_wt / 3f)) {
+                    if (attacker.getStamina() < (weapon.template.cacheTemplate.getItemWt() / 3f)) {
                         //set auto attack job
                         setAutoAttackJob(attacker, slot, delay);
                         return;
                     }
                 }
-                float stam = weapon.template.item_wt / 3f;
+                float stam = weapon.template.cacheTemplate.getItemWt() / 3f;
                 stam = (stam < 1) ? 1 : stam;
                 attacker.modifyStamina(-(stam), attacker, true);
             } else