Load a single scoring binding by id (mutation-free read).
the binding, or null when not found
Load every scoring binding in a given RetrainingPolicy-relevant Mode
(e.g. all Scheduled bindings for the scheduled-rescore pass).
the binding mode to filter on (undefined for ALL bindings)
Load the MJ: ML Models row a binding scores with (mutation-free read).
the model, or null when not found
RunView-backed IMaintenanceLoader. Loads bindings + models as fullentity_objects — the binding IS mutated (its monitoring fields are stamped after a re-score), so it must be a real entity object.