content: """Cache expiration [124b57b8c7b1].
  
  Revision ID: 124b57b8c7b1
  Revises: 7497d2ff5731
  Create Date: 2025-10-06 14:35:53.052890
  
  """
  
  import sqlalchemy as sa
  from alembic import op
  
  # revision identifiers, used by Alembic.
  revision = "124b57b8c7b1"
  down_revision = "7497d2ff5731"
  branch_labels = None
  depends_on = None
  
  
  def upgrade() -> None:
      """Upgrade database schema and/or data, creating a new revision."""
      # ### commands auto generated by Alembic - please adjust! ###
      with op.batch_alter_table("step_run", schema=None) as batch_op:
          batch_op.add_column(
              sa.Column("cache_expires_at", sa.DateTime(), nullable=True)
          )
  
      # ### end Alembic commands ###
  
  
  def downgrade() -> None:
      """Downgrade database schema and/or data back to the previous revision."""
      # ### commands auto generated by Alembic - please adjust! ###
      with op.batch_alter_table("step_run", schema=None) as batch_op:
          batch_op.drop_column("cache_expires_at")
  
      # ### end Alembic commands ###
  