Add LICENSE (CC BY 4.0 + BEHAVIOR-1K carve-out) + License section

LICENSE

@@ -0,0 +1,34 @@
+Creative Commons Attribution 4.0 International (CC BY 4.0)
+
+Copyright (c) 2026 IDEAS Lab, Northwestern University
+
+You are free to:
+
+  Share — copy and redistribute the material in any medium or format
+  Adapt — remix, transform, and build upon the material
+          for any purpose, even commercially.
+
+Under the following terms:
+
+  Attribution — You must give appropriate credit, provide a link to
+  the license, and indicate if changes were made. You may do so in any
+  reasonable manner, but not in any way that suggests the licensor
+  endorses you or your use.
+
+  No additional restrictions — You may not apply legal terms or
+  technological measures that legally restrict others from doing
+  anything the license permits.
+
+Full license text: https://creativecommons.org/licenses/by/4.0/legalcode
+
+----------------------------------------------------------------------
+
+This license covers the generated artifacts in this dataset: the joint
+state/action trajectories, the rendered demonstration videos, and the
+language prompts / metadata.
+
+It does NOT extend to the underlying BEHAVIOR-1K scene and object assets,
+which appear in the rendered videos but are not redistributed as assets
+here; they remain subject to the BEHAVIOR-1K license
+(https://github.com/StanfordVL/BEHAVIOR-1K). To reproduce or extend this
+dataset you must obtain BEHAVIOR-1K / OmniGibson separately.

README.md

@@ -40,3 +40,13 @@ extra). Absolute joint (delta at train time). Cameras (all 5 kept, pick subset a
 ## Notes
 - Camera subset + arm-joint delta are TRAIN-time choices; all 5 streams + absolute joints ship here.
 - MimicGen sim-state replay dump is NOT included (kept in the raw archive; not needed for SFT).
+
+## License
+
+Released under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) (see [`LICENSE`](LICENSE)).
+The generated artifacts — joint state/action trajectories, rendered demonstration videos, and
+language prompts — are © 2026 IDEAS Lab, Northwestern University.
+
+The underlying scene and object assets shown in the rendered videos come from
+[BEHAVIOR-1K](https://github.com/StanfordVL/BEHAVIOR-1K) and remain subject to its license; this
+dataset does not redistribute them as assets.