Initial public release

Aurum — a self-hosted personal finance operating system: cash flow,
net worth tracking, budgets, goals, recurring payments, reports,
proactive alerts, and a compound-interest returns calculator, all
bilingual (RU/EN) and mobile-first. Ships as a three-container Docker
Compose stack (Postgres + FastAPI + nginx-served React frontend).

See README.md for setup and CONTRIBUTING.md for development.

backend/app/db/session.py

@@ -0,0 +1,17 @@
+"""Async SQLAlchemy engine/session wiring."""
+from collections.abc import AsyncGenerator
+
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
+
+from app.core.config import get_settings
+
+settings = get_settings()
+
+engine = create_async_engine(settings.database_url, pool_pre_ping=True)
+
+AsyncSessionLocal = async_sessionmaker(bind=engine, expire_on_commit=False, autoflush=False)
+
+
+async def get_db() -> AsyncGenerator[AsyncSession, None]:
+    async with AsyncSessionLocal() as session:
+        yield session