I’m not sure when or about the original meaning, but in the modern context deckbuilder usually refers to games that let you build or modify your deck during gameplay itself. Dominion invented, or at least massively popularised, the genre in 2008. By the current definition of the genre, there is significant inherent overlap with roguelites. In the boardgame world, games like Frosthaven would be an example of a deckbuilder that’s not a roguelite, though the deckbuilder element there is pretty thin. Slay the Spire was probably the first, or at least first successful, computer game deckbuilder that I’m aware of.