first commit

api/deps.py

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+from __future__ import annotations
+
+from functools import lru_cache
+
+from api.clients.chroma_store import ChromaVectorStore
+from api.clients.openrouter_client import build_openai_client
+from api.config import settings
+from api.services.indexing import IndexingService
+from api.services.legal_ai import LegalAIService
+from api.services.local_embeddings import get_embedding_service
+from api.services.retrieval import HybridRetrievalService
+from shared import ORM
+
+
+@lru_cache(maxsize=1)
+def get_orm() -> ORM:
+    return ORM()
+
+
+@lru_cache(maxsize=1)
+def get_vector_store() -> ChromaVectorStore:
+    return ChromaVectorStore()
+
+
+@lru_cache(maxsize=1)
+def get_ai_service() -> LegalAIService:
+    return LegalAIService(build_openai_client(), settings.llm_model)
+
+
+@lru_cache(maxsize=1)
+def get_retrieval_service() -> HybridRetrievalService:
+    return HybridRetrievalService(
+        orm=get_orm(),
+        embedder=get_embedding_service(),
+        vector_store=get_vector_store(),
+    )
+
+
+@lru_cache(maxsize=1)
+def get_indexing_service() -> IndexingService:
+    return IndexingService(
+        orm=get_orm(),
+        embedder=get_embedding_service(),
+        vector_store=get_vector_store(),
+    )