Rename SQLALCHEMY_DATABASE_URL to SQLALCHEMY_DATABASE_URI to follow SQLAlchemy conventions.

tools/tests/test_models.py

@@ -27,7 +27,7 @@ class TestModels(unittest.TestCase):
     def setUp(self) -> None:
         """Create the schema on an in-memory SQLite database."""
         config.set_settings(config.Settings(
-            SQLALCHEMY_DATABASE_URL="sqlite://",
+            SQLALCHEMY_DATABASE_URI="sqlite://",
             ANTHROPIC_API_KEY="test-key"))
         self.__ds: DataSource = DataSource()
         self.addCleanup(self.__ds.engine.dispose)