Update README with short description and project overview

- Added short_description field for link previews on Slack/social platforms
- Replaced default Hugging Face template text with Be.FM description
- Added clear heading and description of the model's purpose

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

README.md

@@ -7,6 +7,9 @@ sdk: gradio
 sdk_version: 6.0.1
 app_file: app.py
 pinned: false
+short_description: Be.FM: Open Foundation Models for Human Behavior
 ---
 
-Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+# Be.FM: Open Foundation Models for Human Behavior (8B)
+
+Be.FM 8B is an open foundation model for human behavior modeling, built on Llama 3.1 8B and fine-tuned on diverse behavioral datasets. It is designed to enhance the understanding and prediction of human decision-making.