old_contents: # third party
  from sqlalchemy import Column
  from sqlalchemy import Integer
  from sqlalchemy import String
  
  # relative
  from . import Base
  
  
  # this table holds the list of known nodes usually peer domains
  class Node(Base):
      __tablename__ = "node"
  
      id = Column(Integer(), primary_key=True, autoincrement=True)
      node_uid = Column(String(255))
      node_name = Column(String(255))
  
new_contents: # third party
  from sqlalchemy import Boolean
  from sqlalchemy import Column
  from sqlalchemy import Integer
  from sqlalchemy import String
  
  # relative
  from . import Base
  
  
  # this table holds the list of known nodes usually peer domains
  class Node(Base):
      __tablename__ = "node"
  
      id = Column(Integer(), primary_key=True, autoincrement=True)
      node_uid = Column(String(255))
      node_name = Column(String(255))
      keep_connected = Column(Boolean(), default=True)
  
subject: ADD keep_connected column