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6ab68a057443f038a3d844807f205b1c99cab944 by Kevin Zakka <kevinarmandzakka@gmail.com>:
Fix pickle code-execution vulnerability in sysid loaders
Serialize signal_mapping as JSON so the trajectory and time series loaders can use allow_pickle=False, preventing arbitrary code execution from untrusted .npz files.
COPYBARA_INTEGRATE_REVIEW=https://github.com/google-deepmind/mujoco/pull/3353 from kevinzakka:sysid-disable-pickle-load 6ab68a057443f038a3d844807f205b1c99cab944
PiperOrigin-RevId: 935400242
Change-Id: Iecd907174441fbcfd02c106b912a7ff375c9098c
mujoco.minimize.least_squares now supports x_scale natively, so the
sysid wrapper becomes a thin pass-through. 'jac' is adaptive per
iteration (was static at x0).
Hana Joo