language.just

``L.just(obj)`` is the third lie in the lie-typing contract — see the module docstring section "The five fictions". The returned node carries ``_target_: laco.ops.identity`` and ``value: obj``; instantiation returns ``obj`` unchanged. Use this when you need to embed a primitive Python value inside a config tree for in-memory composition — e.g. a pre-computed constant or a simple object that OmegaConf can represent natively. Note that non-primitive values stored via ``just`` will not survive YAML serialization through Hydra's config store.