"""Pipeline orchestrator: the five stages composed and timed, nothing else."""

from app.ports.protocols import MusicCatalog, Recommender


class DiscoveryPipeline:
    """Session context -> intent+candidates -> grounding -> rerank -> action."""

    def __init__(self, catalog: MusicCatalog, recommender: Recommender) -> None:
        self._catalog = catalog
        self._recommender = recommender