I think the confusion comes from a 1993 proposal for non-nuclear, european Hades missiles as a potent non-nuclear deterrent. Sounds familiar ? Ukraine, France and UK are developping that kind of missiles... so the concept made sense, it was just 30 years too early - for Europe. Of course outside Europe Scud was already in that place.Yes indeed, Hadès was always nuclear.
Its concept started as "nucléaire tactique", to be controlled by the 1ere Armée (on FRG soil),
then was changed to "pré-stratégique" (last warning before ICBM armageddon), operated by newly created "Force Hadès" from within France under direct control from Paris.