feat: PocketVeto v1.0.0 — initial public release

Self-hosted US Congress monitoring platform with AI policy briefs,
bill/member/topic follows, ntfy + RSS + email notifications,
alignment scoring, collections, and draft-letter generator.

Authored by: Jack Levy

backend/app/database.py

@@ -0,0 +1,53 @@
+from contextlib import asynccontextmanager
+from typing import AsyncGenerator
+
+from sqlalchemy import create_engine
+from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
+from sqlalchemy.orm import DeclarativeBase, Session, sessionmaker
+
+from app.config import settings
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+# ─── Async engine (FastAPI) ───────────────────────────────────────────────────
+
+async_engine = create_async_engine(
+    settings.DATABASE_URL,
+    echo=False,
+    pool_size=10,
+    max_overflow=20,
+)
+
+AsyncSessionLocal = async_sessionmaker(
+    async_engine,
+    expire_on_commit=False,
+    class_=AsyncSession,
+)
+
+
+async def get_db() -> AsyncGenerator[AsyncSession, None]:
+    async with AsyncSessionLocal() as session:
+        yield session
+
+
+# ─── Sync engine (Celery workers) ────────────────────────────────────────────
+
+sync_engine = create_engine(
+    settings.SYNC_DATABASE_URL,
+    pool_size=5,
+    max_overflow=10,
+    pool_pre_ping=True,
+)
+
+SyncSessionLocal = sessionmaker(
+    bind=sync_engine,
+    autoflush=False,
+    autocommit=False,
+)
+
+
+def get_sync_db() -> Session:
+    return SyncSessionLocal()