Add pipeline tag and paper link

This PR adds the `robotics` pipeline tag and a link to the paper page, making the model easier to discover and ensuring proper attribution.

README.md

@@ -1,12 +1,13 @@
 ---
 license: apache-2.0
+pipeline_tag: robotics
 tags:
-  - robotics
-  - vla
-  - quantization
-  - w4a4
-  - pi0.5
-  - libero
+- robotics
+- vla
+- quantization
+- w4a4
+- pi0.5
+- libero
 ---
 
 # Omega-QVLA — pi0.5 LIBERO W4A4 quantization packs
@@ -14,6 +15,8 @@ tags:
 W4A4 quantization packs for the **pi0.5 (openpi) LIBERO** action policies, produced
 by [Omega-QVLA](https://github.com/UCMP13753/Omega-QVLA).
 
+This repository accompanies the paper [Ω-QVLA: Robust Quantization for Vision-Language-Action Models via Composite Rotation and Per-step Scaling](https://huggingface.co/papers/2605.28803).
+
 ## Recipe (per side)
 
 | side | rotation | quantizer | per-step |
@@ -60,4 +63,4 @@ env CONDA_ROOT=$HOME/miniconda3 METHOD=gptq SUITE=$SUITE WBITS=4 ABITS=4 \
 ```
 
 Both sides load through the GPTQ pack path (`GptqLinear`); the block-form rotation
-and per-step scales are applied automatically.
+and per-step scales are applied automatically.