v1.3.0

• render correctly on legacy serial terminals (VT100–VT420, Wyse)
• fix two git regex answers that couldn't be answered (reflog recover, signed tag)
• keep every prompt, manpage, and Tab panel inside 80 columns on an 80-col terminal
• wrap long answer reveals so they don't shear a narrow frame
• tighten level/scenario wording; correct two scenario descriptions
• new conformance tests assert the whole content corpus renders clean on a vt320