Fix BERT dependencies - add to pyproject.toml

🔧 Fix: HuggingFace Spaces uses pyproject.toml instead of requirements.txt

Dependencies added to pyproject.toml:
- torch>=2.0.0,<2.3.0 (PyTorch for BERT inference)
- transformers>=4.35.0 (HuggingFace Transformers library)
- tokenizers>=0.15.0 (Fast tokenization support)

This should resolve the ModuleNotFoundError for torch.

pyproject.toml

@@ -27,6 +27,11 @@ dependencies = [
     
     # Basic data processing
     "numpy>=1.24.0",
+    
+    # BERT and ML dependencies
+    "torch>=2.0.0,<2.3.0",
+    "transformers>=4.35.0",
+    "tokenizers>=0.15.0",
 ]
 
 [tool.uv]