SPRINGFIELD — Illinois may finally have a budget, but the court agreements that kept state money flowing during the last two years could still leave a financial hangover.Lawyers for a class of about 16,000 special-needs citizens have reiterated their argument that the state is not providing enough services under one of those agreements, StanleyLigas v. Felicia Norwood, No. 05 C 4331, and a judge should order more.Among other things, they argue a $57 million allocation in the state’s new budget, aimed at wage …