Add pipeline tag and links to model card

This PR adds the missing `pipeline_tag` (`text-to-audio`) to the metadata, making the model discoverable at https://huggingface.co/models?pipeline_tag=text-to-audio. It also adds links to the paper page, project page, and the official code repository.

README.md

@@ -1,3 +1,14 @@
 ---
 license: cc-by-sa-4.0
+pipeline_tag: text-to-audio
 ---
+
+# VoxAudio
+
+VoxAudio is a streaming chunk-autoregressive flow matching model for vocalized audio generation: given a text caption that may quote explicit speech, it generates 24 kHz audio containing articulate speech together with the surrounding soundscape.
+
+- **Paper**: [VoxAudio: Vocalized Audio Synthesis via Multi-Reward Autoregressive Flow Matching](https://huggingface.co/papers/2608.12951)
+- **Project Page**: [https://voxaudio.github.io](https://voxaudio.github.io)
+- **Code**: [https://github.com/VoxAudio/VoxAudio_Main](https://github.com/VoxAudio/VoxAudio_Main)
+
+For setup and inference instructions, please refer to the GitHub repository.