It's glad to my mod helps a lot :)
but sadly scenario name or scenario related things will require addtional progress (its untested sadly)
mod developer just add it to scenario's own locale folder. no additional data is nessessary on scenario folder
on truth, I'm just added translation of scenario name as just placeholder. it will be added at sometimes but it requires more testing...
TL;DR it's placeholder. only scenario related translation on scenario/locale :)