Update app/database.py

app/database.py

@@ -2,15 +2,22 @@ from sqlalchemy import create_engine
 from sqlalchemy.orm import sessionmaker, declarative_base
 from app.config import settings
 
+# Detect SQLite for fast local/Spaces boot without env vars
+is_sqlite = settings.DATABASE_URL.startswith("sqlite+")
+
+engine = create_engine(
+    settings.DATABASE_URL,
+    pool_pre_ping=not is_sqlite,
+    future=True,
+    connect_args={"check_same_thread": False} if is_sqlite else {},
+)
 
-engine = create_engine(settings.DATABASE_URL, pool_pre_ping=True, future=True)
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine, future=True)
 Base = declarative_base()
 
-
 def get_db():
     db = SessionLocal()
     try:
         yield db
     finally:
-        db.close()
+        db.close()