So, I impulsively voted for keeping it as "rogue" before I began to think about it some more.
I also noticed that the game Rift has a "calling" for Rogue (one of 4, the others being Warrior/Cleric/Mage), and under this they have several classes including 'Ranger', 'Assassin', 'Bard', etc. So by that reasoning, 'Rogue' would work well here in Novus, since you already have 'Archer' as its own fighting-oriented class.
I think the way is made even more clear for the broad Rogue you intend if we actually consider renaming the Fighter instead to be something like "Warrior". That would let the Rogue expand a bit to fill all the "rough and tumble but scrappy" type characters that might otherise bleed into "Fighters". That feels like a nice 4-way split between Warriors/Archers/Rogues/Thieves as having the armed spectrum well covered. That also helps minimize the question of "wait, isn't an Archer a 'fighter'?" since few people would liken "warriors" (strength, valor, physicalness) with "archers" (nimble, lethal at a distance, strike and flee, etc)
If not keeping it as "Rogue" I wonder why we wouldn't just use the name "Ranger" then, especially if you want to keep it as "wilderness" centric as its opening paragraph makes it.