Complete Wipeout host model coverage

Maps the placement, display and clip-boundary fields with rectangular and
polygonal clip validation. staged_python_wipeout_lifecycle_over_real_ipc
passes the full gate including DWG and DXF reopen with re-edit.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

plugins/opencad-python/entity_manifest.json

@@ -31,7 +31,8 @@
     "PolyfaceMesh",
     "Mesh",
     "Helix",
-    "RasterImage"
+    "RasterImage",
+    "Wipeout"
   ],
   "manual_kinds": ["Dimension"],
   "base_fields": ["handle", "layer", "owner_handle"],
@@ -351,6 +352,14 @@
         "definition_handle": { "read_only": true },
         "definition_reactor_handle": { "read_only": true }
       }
+    },
+    "Wipeout": {
+      "fields": {
+        "insertion_point": { "required": true },
+        "class_version": { "read_only": true },
+        "definition_handle": { "read_only": true },
+        "definition_reactor_handle": { "read_only": true }
+      }
     }
   }
 }