Initial release: rarelens platform skeleton (AGPL-3.0)

End-to-end variant interpretation platform for rare genetic disease research:
SvelteKit UI, FastAPI + PostgreSQL API, Nextflow/Ensembl VEP pipeline,
LightGBM pathogenicity scoring with MLflow, K8s/ArgoCD/GCP infrastructure.
Public test data only; no clinical claims.

api/app/db.py

@@ -0,0 +1,13 @@
+from collections.abc import AsyncIterator
+
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
+
+from app.config import settings
+
+engine = create_async_engine(settings.database_url, pool_pre_ping=True)
+SessionLocal = async_sessionmaker(engine, expire_on_commit=False)
+
+
+async def get_session() -> AsyncIterator[AsyncSession]:
+    async with SessionLocal() as session:
+        yield session