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/Dyn-HaMR/dyn-hamr/vis/viewer.py

@@ -177,6 +177,8 @@ class AnimationBase(object):
         """
         Add a single camera marker node that we move around when we animate
         """
+        if os.environ.get("DYNHAMR_HIDE_CAMERA_MARKERS") == "1":
+            return
         print("ADDING CAMERA MARKERS")
         if self.cam_marker_node is None:
             cam_marker = make_camera_marker(up="y")