chore(hf): add publish_v6_to_dataset.sh for arm-gym-pkg sync

hf/publish_v6_to_dataset.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+# Upload hf/v6_train.py to the Jobs dataset. Requires HF_TOKEN (or huggingface-cli login).
+set -euo pipefail
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$ROOT"
+: "${HF_TOKEN:?Set HF_TOKEN (read-only is enough for upload if permitted)}"
+export HF_TOKEN
+uv run --with huggingface_hub python <<'PY'
+from huggingface_hub import HfApi
+from pathlib import Path
+import os
+p = Path("hf/v6_train.py")
+api = HfApi(token=os.environ["HF_TOKEN"])
+api.upload_file(
+    path_or_fileobj=str(p),
+    path_in_repo="v6_train.py",
+    repo_id="ZDC-M01/arm-gym-pkg",
+    repo_type="dataset",
+    commit_message="chore: sync v6_train.py from arm-gym repo (Jobs curl target)",
+)
+print("OK: ZDC-M01/arm-gym-pkg  path=v6_train.py")
+PY