Upload folder using huggingface_hub (part 62)

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+ "session_id": "20260911_072524_session7",
+ "primitive": "HH04",
+ "batch": "20260911",
+ "participant": "wangyang",
+ "participant_source": "manifest",
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+ "generated_by": "scripts/sync_dataset.py",
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+  "acc": "m/s^2 (8192 LSB/g)",
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+  "mag": "raw counts, scale unconfirmed (data suggests 163.84 LSB/uT, see knowledge_base sanity doc)",
+  "quaternions": "xyzw, Nokov global"
+ },
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+   "note": "second person (no ego cameras), Body1 of the same take, same time base as mocap.npz"
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+ "flags": [
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+   "structure": "FAIL",
+   "markers": "WARN",
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+  "verdict": "READY_WITH_WARNINGS",
+  "issues": [
+   "FAIL S_DB_EMPTY",
+   "FAIL S_REPORT_EMPTY",
+   "WARN M_BODY_ID",
+   "WARN M_SPIKES",
+   "WARN M_TRACKER_LABELS",
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+   "WARN S_PARTICIPANT",
+   "WARN T_EMPTY",
+   "WARN T_IMU_PAIR"
+  ]
+ },
+ "canonical": {
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