add authentication

add built-in cleanup
general refactor

alembic/versions/3c43e544e939_create_invites.py

@@ -0,0 +1,26 @@
+"""create invites
+
+Revision ID: 3c43e544e939
+Revises: f73144466860
+Create Date: 2024-07-29 01:20:12.377093
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '3c43e544e939'
+down_revision: Union[str, None] = 'f73144466860'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.add_column("users", sa.Column("invite_code", sa.String(32), default=None))
+
+
+def downgrade() -> None:
+    op.drop_column("users", "invite_code")