fix: remove pinecone-plugin-inference, revert vectorstore import, clean startup

rag.py

@@ -8,8 +8,8 @@ load_dotenv()
 
 from langchain_classic.chains import RetrievalQA
 from langchain_core.prompts import PromptTemplate
-from langchain_community.embeddings import HuggingFaceEmbeddings
-from langchain_community.vectorstores import Pinecone as LangchainPinecone
+from langchain_huggingface import HuggingFaceEmbeddings
+from langchain_pinecone import PineconeVectorStore as LangchainPinecone
 from pinecone import Pinecone
 
 logger = logging.getLogger(__name__)

requirements.txt

@@ -20,4 +20,7 @@ sentence-transformers==4.1.0
 python-dotenv==1.0.1
 
 groq==0.37.1
-langchain-groq==1.1.2
+langchain-groq==1.1.2
+
+langchain-huggingface
+langchain-pinecone