fix(open3dmodel): unwrap {success,data,error} envelope from /api/recipes

Open3DModel returns the same envelope for /api/recipes as for /api/pose;
the bare-list code path stays as a fallback for older mocks.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/test_open3dmodel_client.py

@@ -59,6 +59,18 @@ def test_list_recipes_happy_path():
     assert headers.get("X-Api-Key") == "K"
 
 
+def test_list_recipes_envelope_shape():
+    """Open3DModel wraps /api/recipes in {success, data, error}."""
+    body = {"success": True,
+            "data": [{"id": "abc", "name": "P2", "symmetry_type": "cylindrical"}],
+            "error": None}
+    response = httpx.Response(200, json=body)
+    client = Open3DModelClient("http://o3d:8878", api_key="K", timeout_s=2.0)
+    with patch("httpx.Client.get", return_value=response):
+        recs = client.list_recipes()
+    assert recs == body["data"]
+
+
 def test_list_recipes_connect_error_raises_unavailable():
     client = Open3DModelClient("http://o3d:8878", api_key="K", timeout_s=2.0)
     with patch("httpx.Client.get", side_effect=httpx.ConnectError("nope")):