FusionCore evidence

What actually happened

When a count changes and nobody believes it, the argument ends at the raw points. fc-evrec banks a short recording per sensor around every promoted track. This page is the index, not the recordings — they are ROS 2 bags, gigabytes apiece, and they belong in a bag player rather than a browser tab. What is here is what exists, what triggered it, what it costs, and where to find it.