Update requirements.txt with version compatibility fixes

requirements.txt

@@ -1,5 +1,10 @@
+# Required versions for Energy Document Classifier
+# Tested and verified to work together
 torch>=2.0.0
-transformers>=4.40.0
-peft>=0.10.0
+transformers>=4.44.0,<4.58.0
+peft>=0.12.0,<0.19.0
 accelerate>=0.28.0
 safetensors>=0.4.0
+
+# Note: The tokenizer is loaded from the base model (meta-llama/Llama-3.1-8B)
+# You need access to the Llama-3.1 model on Hugging Face