docs: how-to for finding graph runs in LangSmith (#1631)

---------

Co-authored-by: Vadym Barda <vadym@langchain.dev>

docs/_scripts/copy_notebooks.py

@@ -68,6 +68,9 @@ _MANUAL = {
         "human_in_the_loop/review-tool-calls.ipynb",
         "node-retries.ipynb",
         "react_diagrams.png",
+        "langsmith_filter_run_id.png",
+        "langsmith_graph_trace.png",
+        "run-id-langsmith.ipynb",
         "react-agent-structured-output.ipynb",
     ],
     "tutorials": [

docs/docs/how-tos/index.md

@@ -87,6 +87,7 @@ These guides show how to use different streaming modes.
 - [How to use a context object in state](state-context-key.ipynb)
 - [How to add node retries](node-retries.ipynb)
 - [How to force function calling agent to structure output](react-agent-structured-output.ipynb)
+- [How to pass custom LangSmith run ID for graph runs](run-id-langsmith.ipynb)
 
 ## Prebuilt ReAct Agent
 

docs/mkdocs.yml

@@ -176,7 +176,8 @@ nav:
           - Visualize your graph: how-tos/visualization.ipynb
           - Add runtime configuration: how-tos/configuration.ipynb
           - Add node retries: how-tos/node-retries.ipynb
-          - How to return structured output from a ReAct agent: how-tos/react-agent-structured-output.ipynb
+          - Return structured output from a ReAct agent: how-tos/react-agent-structured-output.ipynb
+          - Pass custom LangSmith run ID for graph runs: how-tos/run-id-langsmith.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