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StaffML is a static site and cannot run MLSysIM, so its numbers lived in a hand-copied table that cited a deleted mlsysim/core/constants.py. Five devices had drifted: Jetson Orin NX showed its FP16 rate under an INT8 label, the A17 Pro listed 100 GB/s against 51.2 GB/s, B200 memory was 192 against 180, TPU v5p had the wrong year, and every ESP32-S3 field was off. scripts/export_mlsysim_data.py now reads the MLSysIM registries straight from the repo and writes src/data/mlsysim.json, which hardware.ts serves. Each row records the registry entry it came from. Interconnect and latency values move to MLSysIM's measured or sourced figures (NVLink B200 0.5 us, InfiniBand XDR 5 us, 100GbE 50 us, Hopper HBM 273 ns). The cross-US fiber row stays local because MLSysIM has no route distance. The simulator's flops_per_token is 6 x parameters, now labeled as training cost.