# dr_narrow zero2robot live-demo policy. Loaded by the site at `/models/dr_narrow.onnx` and provisioned at build time by `site/scripts/fetch_models.py` (sha256-verified). | field | value | |---|---| | chapter | `ch2.7-dr` | | contract | `v1` | | seed | `0` | | tier | `cpu-laptop` | | exporter | `curriculum/phase2_reinforcement/ch2.7_dr/export_dr_onnx.py` | | sha256 | `ceb4cf4f2811d8dab2350aa934c105dd09ebd09e024db6722acfb7bb62cd176d` | Reproduce: run the exporter above at the recorded seed on the recorded tier; the export is CPU-deterministic, so the bytes (and this sha256) reproduce exactly.