Grocery stores do more volume than restaurants and hotels, and most of them still run on clipboards. In this episode of Founder Firesides, YC's @aaron_epstein sat down with @IamBrandonHill, the co-founder and CEO of @VoriHQ, a modern operating system for grocery stores. They discussed renting a refrigerated truck to save a botched dairy order, building AI agents that automatically update items on the shelf when costs change, and why Vori's $22 million Series B is a bet on the future of…