Add code and env info

requirements_min.txt

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+# Data handling
+numpy >= 1.26.4
+pandas >= 2.2.2
+datasets >= 2.20.0
+
+# Environment
+jupyterlab >= 4.2.2
+ipywidgets >= 8.1.3
+
+# Hard dependencies throughout the entire book
+torch >= 2.3.1
+transformers >= 4.41.2
+sentence-transformers >= 3.0.1
+matplotlib >= 3.9.0
+scikit-learn >= 1.5.0
+sentencepiece >= 0.2.0
+nltk >= 3.8.1
+evaluate >= 0.4.2
+scipy == 1.12.0  # TEMPORARY DEP BECAUSE OF https://github.com/piskvorky/gensim/issues/3525
+
+# Cloud providers
+openai >= 1.34.0
+cohere >= 5.5.8
+
+# Chapter-specific dependencies
+datamapplot >= 0.3.0
+faiss-cpu >= 1.8.0
+bertopic >= 0.16.3       
+annoy >= 1.17.3              
+llama_cpp_python >= 0.2.78 -C cmake.args="-DLLAMA_BLAS=ON"
+numexpr >= 2.10.0
+langchain >= 0.2.5
+langchain-community >= 0.2.5
+langchain-openai >= 0.1.8
+duckduckgo-search >= 6.1.6
+gensim >= 4.3.2             
+setfit >= 1.0.3              
+seqeval >= 1.2.2           
+trl >= 0.9.4                
+peft >= 0.11.1               
+accelerate >= 0.31.0       
+bitsandbytes >= 0.43.1       
+mteb >= 1.12.39