# SPDX-FileCopyrightText: © 2026 Tenstorrent USA, Inc.
# SPDX-License-Identifier: Apache-2.0

"""Shared, device-free foundation of the GR00T N1.5 / N1.6 / N1.7 port.

Everything in this package is CPU-only (torch + safetensors + json) and must never import ``ttnn`` at module
import time.  Sub-modules:

* :mod:`configs`     -- frozen dataclasses with every architectural constant of the three versions
                        (source: ``docs/research/01-architecture-synthesis.md`` §1.1-1.8, ``static-shape-plan.md``).
* :mod:`checkpoint`  -- ``LazyCheckpoint``: sharded-safetensors header parser + lazy tensor reads
                        (``weight-loader-spec.md`` §1).
* :mod:`golden`      -- ``GoldenSet``: unified loader for the golden dumps and their per-tap gates
                        (``golden-tap-map-and-thresholds.md`` §2-4).
* :mod:`pcc`         -- PCC / rel-L2 / max-abs metrics and the per-tap gate checker
                        (``golden-tap-map-and-thresholds.md`` §4.1).

The heavier modules (``weights``, ``preprocessing``, ``prompts``, ``normalization``) are owned by other tasks and are
intentionally not imported here so that importing ``models.experimental.gr00t.common`` stays cheap.
"""

from models.experimental.gr00t.common.configs import GR00T_VERSIONS, GR00TConfig, get_config, snapshot_dir

__all__ = ["GR00T_VERSIONS", "GR00TConfig", "get_config", "snapshot_dir"]