Add theme selector

migrations/versions/20260430181243_theme.py

@@ -0,0 +1,25 @@
+"""theme
+
+Revision ID: 8be315e8a5dc
+Revises: 720abfadcd44
+Create Date: 2026-04-30 18:12:43.026620
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '8be315e8a5dc'
+down_revision: Union[str, Sequence[str], None] = '720abfadcd44'
+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('theme', sa.String(), nullable=False, server_default='light'))
+
+def downgrade() -> None:
+    op.drop_column('users', 'theme')