[Docs] Add State Context Key How-to (#920)

docs/_scripts/copy_notebooks.py

@@ -15,6 +15,7 @@ cloud_sdk_dir = docs_dir / "cloud"
 
 _MANUAL = {
     "how-tos": [
+        "state-context-key.ipynb",
         "async.ipynb",
         "stream-values.ipynb",
         "stream-updates.ipynb",
@@ -88,7 +89,6 @@ _HIDE = set(
         "learning.ipynb",
         "docs/quickstart.ipynb",
         "tutorials/rag-agent-testing.ipynb",
-        "state-context-key.ipynb",
         "time-travel.ipynb",
         "code_assistant/langgraph_code_assistant_mistral.ipynb",
     ]

docs/docs/how-tos/index.md

@@ -53,6 +53,7 @@ These guides show how to use different streaming modes.
 - [How to visualize your graph](visualization.ipynb)
 - [How to add runtime configuration to your graph](configuration.ipynb)
 - [How to use a Pydantic model as your state](state-model.ipynb)
+- [How to use a context object in state](state-context-key.ipynb)
 
 ## Prebuilt ReAct Agent
 

docs/mkdocs.yml

@@ -153,6 +153,7 @@ nav:
           - Visualize your graph: how-tos/visualization.ipynb
           - Add runtime configuration: how-tos/configuration.ipynb
           - Use Pydantic model as state: how-tos/state-model.ipynb
+          - Use a context object in state: how-tos/state-context-key.ipynb
       - Prebuilt ReAct Agent:
           - Create a ReAct agent: how-tos/create-react-agent.ipynb
           - Add memory to a ReAct agent: how-tos/create-react-agent-memory.ipynb