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>

src/presa_mano/clients/open3dmodel.py

@@ -59,10 +59,24 @@ class Open3DModelClient:
             body = r.json()
         except ValueError as e:
             raise Open3DModelUnavailable(f"non-JSON response: {e}") from e
-        if not isinstance(body, list):
-            raise Open3DModelError("UNEXPECTED_PAYLOAD",
-                                   f"expected list, got {type(body).__name__}")
-        return body
+        # Open3DModel wraps list responses in the {success, data, error} envelope
+        # too; older mocks may return a bare list. Accept either shape.
+        if isinstance(body, dict) and "success" in body:
+            if not body.get("success"):
+                err = body.get("error") or {}
+                raise Open3DModelError(
+                    str(err.get("code") or "UNKNOWN"),
+                    str(err.get("message") or "no message"),
+                )
+            data = body.get("data")
+            if not isinstance(data, list):
+                raise Open3DModelError("UNEXPECTED_PAYLOAD",
+                                       f"expected list in data, got {type(data).__name__}")
+            return data
+        if isinstance(body, list):
+            return body
+        raise Open3DModelError("UNEXPECTED_PAYLOAD",
+                               f"expected list or envelope, got {type(body).__name__}")
 
     def estimate_pose(self, recipe_id: str, points_cv_m: np.ndarray,
                       intrinsics: dict[str, Any]) -> dict[str, Any]: