content: """Add cached heartbeat threshold column [2837a7ab3d77].
  
  Revision ID: 2837a7ab3d77
  Revises: d203788f82b9
  Create Date: 2025-11-28 12:27:14.341553
  
  """
  
  import sqlalchemy as sa
  from alembic import op
  
  # revision identifiers, used by Alembic.
  revision = "2837a7ab3d77"
  down_revision = "6e4eb89f632d"
  branch_labels = None
  depends_on = None
  
  
  def upgrade() -> None:
      """Upgrade database schema and/or data, creating a new revision."""
      with op.batch_alter_table("step_run", schema=None) as batch_op:
          batch_op.add_column(
              sa.Column("heartbeat_threshold", sa.Integer(), nullable=True)
          )
  
  
  def downgrade() -> None:
      """Downgrade database schema and/or data back to the previous revision."""
      with op.batch_alter_table("step_run", schema=None) as batch_op:
          batch_op.drop_column("heartbeat_threshold")
  