"""
Heritage RAG Backend

Multi-source retrieval-augmented generation system for heritage custodian data.
Combines Qdrant vector search, Oxigraph SPARQL, TypeDB, and PostGIS.

New modules (v1.1.0):
- temporal_resolver: Temporal conflict resolution for historical facts
- semantic_router: Signal-based query routing (no LLM)
- event_retriever: Hypergraph-based event retrieval
"""

__version__ = "1.1.0"

# Lazy imports to avoid circular dependencies
def get_temporal_resolver():
    from .temporal_resolver import get_temporal_resolver
    return get_temporal_resolver()

def get_signal_extractor():
    from .semantic_router import get_signal_extractor
    return get_signal_extractor()

def get_decision_router():
    from .semantic_router import get_decision_router
    return get_decision_router()

def create_event_retriever(*args, **kwargs):
    from .event_retriever import create_event_retriever
    return create_event_retriever(*args, **kwargs)