feat(D-01/A): poseType, helpers, OWNERSHIP ComponentType (A4, A5, A6)

- DataDrivenItemDefinition: add poseType field, parsed from JSON "pose_type"
- PoseTypeHelper: resolves PoseType from V2 definition or V1 ItemBind fallback
- BindModeHelper: static bind mode NBT utilities (isBindItem, hasArmsBound,
  hasLegsBound, cycleBindModeId) — works for V1 and V2 items
- CollarHelper: complete static utility class for collar operations with
  dual-path V2/V1 dispatch (ownership, features, shock, GPS, choke, alert)
- ComponentType: add OWNERSHIP enum value
- OwnershipComponent: stub class (lifecycle hooks added in next commit)

src/main/java/com/tiedup/remake/v2/bondage/component/ComponentType.java

@@ -15,7 +15,8 @@ public enum ComponentType {
     SHOCK("shock", ShockComponent::fromJson),
     GPS("gps", GpsComponent::fromJson),
     CHOKING("choking", ChokingComponent::fromJson),
-    ADJUSTABLE("adjustable", AdjustableComponent::fromJson);
+    ADJUSTABLE("adjustable", AdjustableComponent::fromJson),
+    OWNERSHIP("ownership", OwnershipComponent::fromJson);
 
     private final String jsonKey;
     private final Function<JsonObject, IItemComponent> factory;

src/main/java/com/tiedup/remake/v2/bondage/component/OwnershipComponent.java

@@ -0,0 +1,20 @@
+package com.tiedup.remake.v2.bondage.component;
+
+import com.google.gson.JsonObject;
+
+/**
+ * Component: collar ownership behavior for data-driven items.
+ *
+ * <p>Marks an item as a collar with ownership capabilities.
+ * Lifecycle hooks handle CollarRegistry registration/unregistration.</p>
+ *
+ * <p>JSON config: {@code "ownership": {}}</p>
+ */
+public class OwnershipComponent implements IItemComponent {
+
+    private OwnershipComponent() {}
+
+    public static IItemComponent fromJson(JsonObject config) {
+        return new OwnershipComponent();
+    }
+}