Initial snapshot: hand motion pipeline (Dyn-HaMR + dex-retargeting + SPIDER)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

third_party/hamer/third-party/ViTPose/tests/test_regularization.py

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+# Copyright (c) OpenMMLab. All rights reserved.
+import numpy as np
+import torch
+
+from mmpose.core import WeightNormClipHook
+
+
+def test_weight_norm_clip():
+    torch.manual_seed(0)
+
+    module = torch.nn.Linear(2, 2, bias=False)
+    module.weight.data.fill_(2)
+    WeightNormClipHook(max_norm=1.0).register(module)
+
+    x = torch.rand(1, 2).requires_grad_()
+    _ = module(x)
+
+    weight_norm = module.weight.norm().item()
+    np.testing.assert_almost_equal(weight_norm, 1.0, decimal=6)