Building an Agentic Personal Trainer - Part 5: Smart Duplicate Detection

When I do an indoor bike workout, my bike computer records it. So does [Wahoo SYSTM](https://support.wahoofitness.com/hc/en-us/sections/5183647197586-SYSTM). Then both the bike computer and SYSTM sync to [Garmin Connect](https://connect.garmin.com/). Now I have two records of the same ride. My agent thinks I'm training twice as much as I am.