fix: use langchain-mongodb

use langchain-mongodb instead of depricated langchain_community.vectorstores for MongoDBAtlasVectorSearch import

Author: Adam-Aghili

src/backend/base/pyproject.toml

@@ -103,6 +103,7 @@ dependencies = [
     "pyasn1>=0.6.3,<0.7.0",
     "langgraph-checkpoint>4.0.0,<5.0.0",
     "transformers>=5.6.0,<6.0.0",
+    "langchain-mongodb>=0.11.0",
 ]
 
 [dependency-groups]
@@ -208,7 +209,7 @@ chroma = [
 upstash = ["upstash-vector==0.6.0"]
 pinecone = ["langchain-pinecone~=0.2.13; python_version < '3.14'"]
 milvus = ["langchain-milvus~=0.3.2"]
-mongodb-vectors = ["langchain-mongodb==0.7.0"]
+mongodb-vectors = ["langchain-mongodb>=0.7.0"]
 astradb = ["langchain-astradb~=1.0.0"]
 
 # Individual LLM providers

src/backend/base/uv.lock

@@ -97,6 +97,7 @@ integration = [
     # Dependencies for running Simple Agent and other integration tests
     "langchain-openai>=1.1.12,<2.0.0",
     "langchain-community>=0.4.1,<1.0.0",
+    "langchain-mongodb>=0.11.0",
     "beautifulsoup4>=4.12.0",
     "lxml>=5.0.0",
 ]

src/lfx/pyproject.toml

@@ -2,7 +2,7 @@
 import time
 
 import certifi
-from langchain_community.vectorstores import MongoDBAtlasVectorSearch
+from langchain_mongodb import MongoDBAtlasVectorSearch
 from pymongo.collection import Collection
 from pymongo.operations import SearchIndexModel