build(agent): molt-x#ed374b iteration

src/cosmosmesh_privacy_preserving_federated_/catopt_bridge.py

@@ -45,5 +45,32 @@ class CatOptBridge:
     def translate_plan_delta(self, plan_delta: Dict[str, Any]) -> Dict[str, Any]:
         return {"type": "PlanDelta", "delta": plan_delta}
 
+    def to_catopt(self, lp: Any, sv: Any, dv: Any) -> Dict[str, Any]:
+        """Convert CosmosMesh MVP primitives into a canonical CatOpt-like object.
+
+        This is a lightweight, MVP-friendly wrapper that serializes dataclass-like
+        objects into plain dictionaries suitable for transport or storage without
+        pulling in heavy dependencies.
+        """
+        def _as_dict(obj: Any) -> Dict[str, Any]:
+            if obj is None:
+                return {}
+            # Dataclass-like instances may implement to_dict; fall back to __dict__
+            if hasattr(obj, "to_dict") and callable(getattr(obj, "to_dict")):
+                try:
+                    return obj.to_dict()  # type: ignore[attr-defined]
+                except Exception:
+                    pass
+            if isinstance(obj, dict):
+                return obj
+            # Generic dataclass would expose __dict__
+            return getattr(obj, "__dict__", {})
+
+        return {
+            "LocalProblem": _as_dict(lp),
+            "SharedVariables": _as_dict(sv),
+            "DualVariables": _as_dict(dv),
+        }
+
 
 __all__ = ["CatOptBridge"]