Upload folder using huggingface_hub (part 943)

.gitattributes

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+ "session_id": "20261023_042501_session50",
+ "primitive": "LH06",
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+   "generated_at_utc": "2026-10-26T15:16:58.217198+00:00",
+   "note": "constant wrist rotation (marker-fit gauge freedom) removed; marker predictions unchanged"
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+ },
+ "release": {
+  "release_path": "actions/long_horizon_composite/LH06/session_004",
+  "family": "long_horizon_composite",
+  "primitive": "LH06",
+  "source_session": "20261023/LH06/20261023_042501_session50"
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