Add model card and robotics pipeline tag

README.md

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+pipeline_tag: robotics
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+# WSA₁: A 3D-Centric World-Spatial-Action Model for Generalizable Robot Control
+
+WSA₁ is an embodied foundation model that introduces **World-Spatial-Action** modeling to unify instruction-aligned 2D visual planning, action-conditioned 3D world modeling, and 3D-aware action generation.
+
+- **Paper:** [WSA₁: a 3D-Centric World-Spatial-Action Model for Generalizable Robot Control](https://huggingface.co/papers/2607.03941)
+- **Project Page:** [https://zaleni.github.io/WSA1/](https://zaleni.github.io/WSA1/)
+- **Repository:** [https://github.com/zaleni/WSA](https://github.com/zaleni/WSA)
+
+## Overview
+
+WSA₁ learns a shared 2D-3D latent space that connects instruction-aligned visual planning, action-conditioned 3D world prediction, and 3D-aware action generation. It delivers high manipulation performance across simulation environments (such as RoboTwin 2.0 and LIBERO) and real-world robot control tasks.
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+For environment setup, pretraining, fine-tuning, and evaluation workflows, please refer to the official [GitHub repository](https://github.com/zaleni/WSA).