Update requirements.txt

requirements.txt

@@ -1,10 +1,10 @@
-
-gradio==4.24.0
-gensim==4.3.2
-faiss-cpu==1.7.4
-huggingface_hub==0.23.0
-pandas==2.2.2
-tqdm==4.66.4
-python-dotenv==1.0.1
-scipy==1.10.1
+gradio==4.24.0               # UI framework
+gensim==4.3.1                # Word2Vec embeddings
+faiss-cpu==1.7.4             # FAISS for fast vector search
+pandas==2.2.2                # Data manipulation
+numpy==1.24.4                # Numerical ops (used by gensim/faiss)
+tqdm==4.66.2                 # Progress bars
+huggingface_hub==0.21.4      # Access Reddit dataset
+python-dotenv==1.0.1         # Load HF token securely from .env
+scikit-learn==1.3.2          # Similarity, evaluation, and future improvements