A de facto life sentence for an 18-year-old convicted of murder and attempted murder does not violate the state constitution, a state appeals panel ruled Tuesday.The 1st District Appellate Court’s opinion in People v. Derrick Thomas, 2017 IL App (1st) 142557 is directly at odds with another 1st District opinion made back in December, where another divided panel made the exact opposite ruling.In that decision — People v. Harris, 2016 IL App (1st) 141744, an appellate panel remanded the defendant’s case …