from typing import Any, Dict


class GoCRegistry:
    """Lightweight Graph-of-Contracts registry stub for tests."""

    def __init__(self) -> None:
        self._registry: Dict[str, Any] = {}

    def register_adapter(self, name: str, metadata: Any) -> None:
        self._registry[name] = metadata

    def get_adapter(self, name: str) -> Any:
        return self._registry.get(name)

    def list_adapters(self) -> list:
        """Return the list of registered adapter names in deterministic order."""
        return sorted(self._registry.keys())