Initial commit

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/database.py

@@ -0,0 +1,22 @@
+import os
+from sqlalchemy import create_engine
+from sqlalchemy.orm import DeclarativeBase, sessionmaker
+
+DATABASE_URL = os.environ["DATABASE_URL"]
+
+engine = create_engine(DATABASE_URL, pool_pre_ping=True)
+
+SessionLocal = sessionmaker(bind=engine, autocommit=False, autoflush=False)
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+def get_db():
+    """FastAPI dependency — yields a DB session and closes it when done."""
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()