feat(D-01/A): NPC speed reduction for V2 items (A12)

- onEquipped: apply RestraintEffectUtils speed reduction for non-Player
  entities with ARMS region and legs bound. Full immobilization for
  WRAP/LATEX_SACK pose types.
- onUnequipped: remove speed reduction for non-Player entities
- Players use MovementStyleManager (V2 tick-based), not this legacy path

src/main/java/com/tiedup/remake/v2/bondage/datadriven/DataDrivenBondageItem.java

@@ -349,6 +349,17 @@ public class DataDrivenBondageItem extends AbstractV2BondageItem {
         if (holder != null) {
             holder.onEquipped(stack, entity);
         }
+
+        // NPC speed reduction (players use MovementStyleManager, not this legacy path)
+        if (!(entity instanceof Player)) {
+            Set<BodyRegionV2> regions = getOccupiedRegions(stack);
+            if (regions.contains(BodyRegionV2.ARMS) && BindModeHelper.hasLegsBound(stack)) {
+                com.tiedup.remake.items.base.PoseType pose = com.tiedup.remake.v2.bondage.PoseTypeHelper.getPoseType(stack);
+                boolean fullImmobilization = pose == com.tiedup.remake.items.base.PoseType.WRAP
+                    || pose == com.tiedup.remake.items.base.PoseType.LATEX_SACK;
+                com.tiedup.remake.util.RestraintEffectUtils.applyBindSpeedReduction(entity, fullImmobilization);
+            }
+        }
     }
 
     @Override
@@ -357,6 +368,14 @@ public class DataDrivenBondageItem extends AbstractV2BondageItem {
         if (holder != null) {
             holder.onUnequipped(stack, entity);
         }
+
+        // NPC speed cleanup
+        if (!(entity instanceof Player)) {
+            Set<BodyRegionV2> regions = getOccupiedRegions(stack);
+            if (regions.contains(BodyRegionV2.ARMS)) {
+                com.tiedup.remake.util.RestraintEffectUtils.removeBindSpeedReduction(entity);
+            }
+        }
     }
 
     @Override