docs[patch]: Update index with missing docs

docs/docs/how-tos/index.md

@@ -31,6 +31,7 @@ LangGraph.js makes it easy to persist state across graph runs. The guides below
 - [How to view and update past graph state](time-travel.ipynb)
 - [How to create a custom checkpointer using Postgres](persistence-postgres.ipynb)
 - [How to delete messages](delete-messages.ipynb)
+- [How to add summary of the conversation history](add-summary-conversation-history.ipynb)
 
 ## Human-in-the-loop
 
@@ -52,6 +53,7 @@ These guides show how to use different streaming modes.
 - [How to stream LLM tokens](stream-tokens.ipynb)
 - [How to stream LLM tokens without LangChain models](streaming-tokens-without-langchain.ipynb)
 - [How to stream events from within a tool](streaming-events-from-within-tools.ipynb)
+- [How to stream from the final node](streaming-from-final-node.ipynb)
 
 ## Tool calling
 

docs/mkdocs.yml

@@ -102,6 +102,7 @@ nav:
           - Manage conversation history: "how-tos/manage-conversation-history.ipynb"
           - Create a custom checkpointer using Postgres: "how-tos/persistence-postgres.ipynb"
           - How to delete messages: "how-tos/delete-messages.ipynb"
+          - Add summary of the conversation history: "how-tos/add-summary-conversation-history.ipynb"
       - Human-in-the-loop:
           - Add human-in-the-loop: "how-tos/human-in-the-loop.ipynb"
           - Add breakpoints: "how-tos/breakpoints.ipynb"