Add README with task list and source attribution

README.md

@@ -1,3 +1,58 @@
----
-license: mit
----
+---
+license: apache-2.0
+task_categories:
+  - robotics
+tags:
+  - LeRobot
+  - ur3
+  - manipulation
+  - imitation-learning
+configs:
+  - config_name: default
+    data_files: data/*/*.parquet
+---
+
+# ur3-merged-5tasks-v2
+
+A multi-task UR3 manipulation dataset in LeRobot v2.1 format, merged from
+five source datasets covering pick-and-place, unstacking, multi-item
+sorting, and pushing primitives.
+
+## Tasks
+
+| task_index | description |
+|:----------:|:------------|
+| 0 | pick up the pink cylinder and place it in the orange box |
+| 1 | pick up the white glass and put on a brown coaster |
+| 2 | Remove cup from nested cups |
+| 3 | pick multiple items then put in the orange basket |
+| 4 | Single-finger push to blue marker |
+
+## Source datasets
+
+This dataset was assembled by merging the following:
+
+- [`zestcode5/ur3-pink-cylinder-6D`](https://huggingface.co/datasets/zestcode5/ur3-pink-cylinder-6D) - base; provides task 0
+- [`zestcode5/ur3-multiple-task-trimmed-idle`](https://huggingface.co/datasets/zestcode5/ur3-multiple-task-trimmed-idle) - split into per-task subsets; provides tasks 1, 2, 4
+- [`zestcode5/ur3-multiple-item-basket-trimmed`](https://huggingface.co/datasets/zestcode5/ur3-multiple-item-basket-trimmed) - provides task 3
+
+The schema, fps, and camera configuration follow the base dataset.
+
+## Format
+
+- LeRobot v2.1
+- Robot: UR3
+- One parquet file per episode under `data/chunk-*/`
+- One mp4 file per camera per episode under `videos/chunk-*/<camera>/`
+- Episode metadata in `meta/episodes.jsonl`, task list in `meta/tasks.jsonl`,
+  per-episode stats in `meta/episodes_stats.jsonl`
+
+## Loading
+
+```python
+from lerobot.common.datasets.lerobot_dataset import LeRobotDataset
+
+ds = LeRobotDataset("zestcode5/ur3-merged-5tasks-v2")
+print(ds.num_episodes, ds.num_frames, ds.fps)
+sample = ds[0]
+```