docs: publish phone20 Stage1/Stage2 artifact catalog

README.md

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+---
+pretty_name: Sharpa Artifacts
+tags:
+- robotics
+- dexterous-manipulation
+- retargeting
+- hdf5
+- mano
+---
+
+# Sharpa Artifacts
+
+Public, versioned machine artifacts for the Sharpa functional-reorientation pipeline.
+Source code and download validators live in
+[`ai4ce/dex_retarget`](https://github.com/ai4ce/dex_retarget).
+
+## Layout
+
+Artifacts are organized by object and immutable release:
+
+```text
+objects/<object>/releases/<release-id>/
+```
+
+The first release is `objects/phone/releases/phone20-stage12-v1`. It contains:
+
+- 20 accepted Stage1 NPZ files (`phone_01` through `phone_20`);
+- 60 Stage2 H5 files: human 60 Hz, canonical retarget, and moving28 60 fps;
+- per-episode manifests, QA JSON, GoalContracts, and accepted Stage2 handoffs;
+- one common phone mesh, 100-point object keypoint set, and 20-exemplar Goal Bank.
+
+`release_manifest.json` and `checksums.sha256` define every released byte. Consumers
+should pin an exact repository revision and verify the release manifest before use.
+
+## Data boundary
+
+This repository contains derived research artifacts. It does not contain raw
+Vicon/MANUS capture, checkpoints, teacher rollouts, behavior-cloning datasets,
+training logs, or QA videos. Public access does not grant rights to unrelated
+third-party assets; users remain responsible for their applicable licenses.
+
+## First release identity
+
+- Release: `phone20-stage12-v1`
+- Artifact commit: `d0f57bd8a2dfb6c5ea0d270f3c98dcee88d64f71`
+- Release manifest SHA256: `aa3d82494e25d45b1383ac9241bfdf5813d6d7e94c3d31e52d81aa4341cd8ae3`
+- Source producer commit: `22d7dd4ae9dd782625464788e5741a0565311c77`
+- Source state: clean; all 20 handoffs record `STAGE2_HANDOFF_ACCEPTED`

catalog.json

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+{
+  "schema": "sharpa_artifact_hf_repository_catalog_v1",
+  "repo_id": "FlappyHimself/sharpa-artifacts",
+  "repo_type": "dataset",
+  "public": true,
+  "releases": [
+    {
+      "artifact_revision": "d0f57bd8a2dfb6c5ea0d270f3c98dcee88d64f71",
+      "episode_count": 20,
+      "manifest_sha256": "aa3d82494e25d45b1383ac9241bfdf5813d6d7e94c3d31e52d81aa4341cd8ae3",
+      "member_count": 283,
+      "object": "phone",
+      "path": "objects/phone/releases/phone20-stage12-v1",
+      "release_id": "phone20-stage12-v1",
+      "stage1_npz_count": 20,
+      "stage2_h5_count": 60,
+      "status": "PUBLIC_RELEASE_READY"
+    }
+  ]
+}