Update to 2026-09-17 pipeline snapshot; add weights, L20 assets and recording via Git LFS

Source: RGB-D -> Dyn-HaMR -> L20 retargeting -> FoundationPose -> reference repair -> SPIDER,
documented in docs/PIPELINE_LATEST.md and docs/SETUP_AND_WEIGHTS.md. Adds FoundationPose and
nvdiffrast upstream snapshots, requirements/pipeline_venv.txt and the FoundationPose weight
manifest/downloader.

Assets (Git LFS): weights/ (WiLoR detector, HandFlow denoiser, UniDepth-L), FoundationPose
checkpoints, HaMeR checkpoint, Dyn-HaMR HMP model and BMC constraints, L20 URDF/meshes, the
20260915_171525 D405 recording and the two box CADs. MANO models are not redistributed
(third_party/hamer/_DATA/data/mano/README.txt). Environments, caches and run outputs excluded.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

third_party/nvdiffrast/MANIFEST.in

@@ -0,0 +1,21 @@
+# Include standard project files
+include README.md
+include LICENSE.txt
+include pyproject.toml
+include setup.py
+
+# Include documentation
+recursive-include docs *
+
+# Include CUDA/C++ sources and Python files in the source package.
+recursive-include nvdiffrast *.py
+recursive-include csrc *.h *.inl *.cu *.cpp *.hpp
+
+# Exclude compiled files and caches
+global-exclude *~ *.py[cod] *.so
+global-exclude __pycache__
+global-exclude .git*
+global-exclude .DS_Store
+global-exclude *.egg-info
+global-exclude build
+global-exclude dist