"""Frozen video-encoder adapters and differentiable replay utilities.

The final distribution matching objective extracts DINOv3, V-JEPA2, and VideoMAE-v2
representations and replays feature cotangents through the encoders and VAE.
The directory name is retained only to avoid a broad import-path migration.

Subpackages:
* ``encoders`` -- frozen representation adapters and metadata helpers.
* ``replay`` -- encoder and decoder vector-Jacobian products.
* ``samplers`` -- deterministic frame and clip selection.
"""