Fix OpenAI embeddings initialization and update package versions

preprocess/embed_documents.py

@@ -5,11 +5,15 @@ from langchain_openai import OpenAIEmbeddings
 from langchain_community.vectorstores import FAISS
 import json
 import numpy as np
+import os
 
 
 def create_or_load_vectorstore(docs: list[Document], path: str = "generated/vectorstore") -> FAISS:
     path = Path(path)
-    embeddings = OpenAIEmbeddings()
+    embeddings = OpenAIEmbeddings(
+        model="text-embedding-3-small",
+        openai_api_key=os.getenv("OPENAI_API_KEY")
+    )
     
     if path.exists():
         print("✅ Loading FAISS VectorStore from disk...")

requirements.txt

@@ -5,7 +5,7 @@ langchain-openai==0.0.8
 langgraph==0.0.26
 beautifulsoup4==4.12.3
 pydantic>=2.5.3,<3.0.0
-openai==1.12.0
+openai>=1.12.0,<2.0.0
 tiktoken==0.6.0
 faiss-cpu==1.10.0
 langsmith>=0.1.0,<0.2.0