Switch to Gradio 5.49.1 for stability

- Gradio 4.x versions have persistent bugs
- Gradio 5.49.1 is latest stable with all fixes
- Removed huggingface-hub pin (5.x compatible with latest)
- Should resolve schema parser and HfFolder issues

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

README.md

@@ -4,7 +4,7 @@ emoji: 🔫
 colorFrom: purple
 colorTo: blue
 sdk: gradio
-sdk_version: 4.43.0
+sdk_version: 5.49.1
 app_file: app.py
 pinned: false
 license: mit

requirements.txt

@@ -5,5 +5,4 @@ colorama
 numpy
 scipy
 matplotlib
-gradio==4.43.0
-huggingface-hub<0.23.0
+gradio==5.49.1