Fix runtime error by adding proper version constraints to requirements.txt

Added version constraints to ensure compatibility:
- tensorflow>=2.10.0 (was missing version)
- pandas>=1.3.0
- ethos-u-vela>=3.0.0
- numpy>=1.21.0
- pillow>=9.0.0

This should resolve the ModuleNotFoundError: No module named 'tensorflow'

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

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

requirements.txt

@@ -1,3 +1,6 @@
 gradio==4.44.0
-pandas
-ethos-u-vela
+pandas>=1.3.0
+ethos-u-vela>=3.0.0
+tensorflow>=2.10.0
+numpy>=1.21.0
+pillow>=9.0.0