fix(examples/integrations): bump ag-ui-langgraph to 0.0.37 for copilotkit 0.1.93

copilotkit 0.1.93 re-exports StateStreamingMiddleware/StateItem FROM
ag_ui_langgraph.middlewares.state_streaming, which only exists in
ag-ui-langgraph>=0.0.35. The Dockerfiles installed copilotkit with --no-deps
and pinned ag-ui-langgraph[fastapi]==0.0.22, so the middlewares submodule was
missing and the agent crash-looped at boot with
'ModuleNotFoundError: No module named ag_ui_langgraph.middlewares'.
Bump the pin to 0.0.37 (the version copilotkit 0.1.93 resolves with deps).

Verified by booting the langgraph-python image: the agent now reaches
'Application startup complete' / 'Uvicorn running on 0.0.0.0:8123' with no
ImportError, and the container serves HTTP 200 on /.

Author: jpr5

examples/integrations/langgraph-fastapi/Dockerfile

@@ -45,7 +45,7 @@ WORKDIR /app
 # Instead serve via ag-ui-langgraph + copilotkit (same protocol, no Docker needed)
 COPY agent/ ./agent/
 # Install ag-ui-langgraph FIRST at pinned version (before copilotkit can override it)
-RUN uv pip install --system "ag-ui-langgraph[fastapi]==0.0.22" && \
+RUN uv pip install --system "ag-ui-langgraph[fastapi]==0.0.37" && \
     uv pip install --system --no-deps "copilotkit==0.1.93" && \
     uv pip install --system "partialjson>=0.0.8,<0.0.9" "toml>=0.10.2,<0.11.0" && \
     uv pip install --system \

examples/integrations/langgraph-python/Dockerfile

@@ -45,7 +45,7 @@ WORKDIR /app
 # Instead serve via ag-ui-langgraph + copilotkit (same protocol, no Docker needed)
 COPY agent/ ./agent/
 # Install ag-ui-langgraph FIRST at pinned version (before copilotkit can override it)
-RUN uv pip install --system "ag-ui-langgraph[fastapi]==0.0.22" && \
+RUN uv pip install --system "ag-ui-langgraph[fastapi]==0.0.37" && \
     uv pip install --system --no-deps "copilotkit==0.1.93" && \
     uv pip install --system "partialjson>=0.0.8,<0.0.9" "toml>=0.10.2,<0.11.0" && \
     uv pip install --system \