MrBeast hid GoPros in random Walmarts so he could watch why his Feastables bars kept breaking on the shelves. Hershey has been making chocolate for 132 years and never had to. The standard CPG playbook for "why are bars arriving broken" runs through five layers. Call the distributor. Ask the Walmart buyer. Run a packaging stress test. Pull the returns data. Send a regional manager to spot-check three stores. Every layer aggregates. None of them show what an actual seven-year-old does to a bar…