docs: add link to HuggingFace Space demo

Add official "Open in Spaces" badge and demo link to make the
interactive demo more discoverable from the model card.

README.md

@@ -16,6 +16,8 @@ language:
 
 # FASHN Human Parser
 
+[![Open in Spaces](https://huggingface.co/datasets/huggingface/badges/resolve/main/open-in-hf-spaces-sm.svg)](https://huggingface.co/spaces/fashn-ai/fashn-human-parser)
+
 A SegFormer-B4 model fine-tuned for human parsing with 18 semantic classes, optimized for fashion and virtual try-on applications.
 
 <p align="center">
@@ -156,5 +158,6 @@ This model inherits the [NVIDIA Source Code License for SegFormer](https://githu
 ## Links
 
 - [FASHN AI](https://fashn.ai/)
+- [Interactive Demo](https://huggingface.co/spaces/fashn-ai/fashn-human-parser)
 - [GitHub Repository](https://github.com/fashn-AI/fashn-human-parser)
 - [PyPI Package](https://pypi.org/project/fashn-human-parser/)