Add model card and robotics metadata

README.md

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+pipeline_tag: robotics
+license: apache-2.0
+---
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+# WSA: A 3D-Centric World-Spatial-Action Model for Generalizable Robot Control
+
+This repository contains the weights for **WSA-Base**, a 3D-centric World-Spatial-Action embodied foundation model for generalizable robot control. 
+
+- **Paper:** [WSA$_1$: 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
+
+WSA (World-Spatial-Action) is an embodied foundation model that unifies instruction-aligned 2D visual planning, action-conditioned 3D world modeling, and 3D-aware action generation into a shared latent space. WSA-Base utilizes a Qwen3-VL-2B backbone and is pre-trained on diverse datasets to enable data-efficient, generalizable robot manipulation.
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+For details on how to set up the environment, run inference, or perform downstream fine-tuning, please refer to the [official GitHub repository](https://github.com/zaleni/WSA).