_validator/ — smoke-test checkpoint

Tiny Brax/JAX policy checkpoint copied verbatim from the SSD source tree (ainex-robot-code/checkpoints/mujoco_test/). It exists to give CI a deterministic checkpoint to load without provisioning object storage.

• config.json (1.5 KB) — env + policy config dumped by training.
• final_params (1.5 MB) — Brax policy weights (orbax final_params file).
• metrics.json (2 KB) — training-time metric snapshot.

Total: 1.5 MB. Well below the 5 MB per-file commit ceiling enforced by scripts/check-no-large-binaries.sh.

Usage in tests

from eliza_robot.rl import checkpoint_root
from eliza_robot.sim.mujoco.inference import load_policy

ckpt = checkpoint_root() / "_validator"
inference_fn, config = load_policy(str(ckpt))

Override the root with ELIZA_ROBOT_CHECKPOINT_DIR=/path/to/checkpoints to point at a Nebius-mounted volume or your own training output. The _validator/ directory is the only checkpoint kept in git; everything else in checkpoints/ is gitignored.