I usually activate the witcher gear upgrade quests by buying maps for them from vendors, but I haven't been able to find anything that activates the quest for the Enhanced Feline gear, which would be called
Scavenger Hunt: Cat School Gear Upgrade Diagrams - Part 1
I know I can look up the locations for the diagrams online, but I want to be able to locate the diagrams through the in-game quest, not by just googling every diagram.
How do I activate this quest? If there's a map for it, I haven't been able to find it. Does a specific vendor sell the map?