text: ALTER TABLE system_intake ADD COLUMN lcid text;
  ALTER TABLE system_intake
    ADD CONSTRAINT lcid_check CHECK (lcid ~ '^[0-9]{6}$');
  CREATE INDEX lcid_idx ON system_intake (lcid) WHERE LENGTH(lcid)>0;
  
  ALTER TABLE system_intake ADD COLUMN lcid_expires_at timestamp with time zone;
  ALTER TABLE system_intake ADD COLUMN lcid_scope text;
  ALTER TABLE system_intake ADD COLUMN lcid_next_steps text;
  