Update pipeline tag to robotics

This PR updates the `pipeline_tag` to `robotics` to ensure the model is classified correctly on the Hugging Face Hub. It also refines the model card description and preserves the links to the paper and code.

README.md

@@ -1,20 +1,29 @@
 ---
+datasets:
+- ZichenYan/AION-dataset-files
 license: mit
+pipeline_tag: robotics
 tags:
 - reinforcement-learning
 - drones
 - aerial-navigation
 - object-goal-navigation
-pipeline_tag: reinforcement-learning
-datasets:
-- ZichenYan/AION-dataset-files
 ---
+
 # AION: Aerial Indoor Object-Goal Navigation Using Dual-Policy Reinforcement Learning
+
+AION is an end-to-end dual-policy reinforcement learning (RL) framework that decouples exploration and goal-reaching behaviors into two specialized policies for vision-based aerial ObjectNav without relying on external localization or global maps.
+
 ## Files
 | Checkpoint | Description |
 |------------|-------------|
 | `AION-g.dat` | Goal-reaching model |
 | `AION-e.dat` | Exploration model |
+
+## Links
+- 📄 Paper: [arXiv](https://arxiv.org/abs/2601.15614)
+- 💻 Code: [GitHub](https://github.com/Zichen-Yan/AION)
+
 ## Citation
 ```bibtex
 @article{yan2026aion,
@@ -23,7 +32,4 @@ datasets:
   journal={arXiv preprint arXiv:2601.15614},
   year={2026}
 }
-```
-## Links
-- 📄 Paper: [arXiv](https://arxiv.org/abs/2601.15614)
-- 💻 Code: [GitHub](https://github.com/Zichen-Yan/AION)
+```