# height_hack

zero2robot live-demo policy. Loaded by the site at `/models/height_hack.onnx` and provisioned at build time by `site/scripts/fetch_models.py` (sha256-verified).

| field | value |
|---|---|
| chapter | `ch2.4-rewards` |
| contract | `v1` |
| seed | `0` |
| tier | `cpu-laptop` |
| exporter | `curriculum/phase2_reinforcement/ch2.4_rewards/export_rewards_onnx.py` |
| sha256 | `442c3fe5e43eb44ea7e40c654a558782628d5133c389fd6cd5abd7e7c8715019` |

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.