Upstream renamed sdk-python/copilotkit/langgraph_agent.py to
langgraph_agui_agent.py and the class to LangGraphAGUIAgent. Update the V1
reference autogen entry in scripts/docs/lib/files.ts to point at the new
source and class name, and regenerate the shell-docs MDX. Pipeline now
reports 26/26 entries succeeding (was 25/26).
Update scripts/docs to write directly into showcase/shell-docs/src/content/reference/
(consumed by /reference/[...slug]) instead of the legacy docs/content/docs tree.
Adds repo-root cwd anchoring, mkdir -p on the destination, allSettled so a single
missing source doesn't abort the run; generates 25 MDX pages (20 V1 + 5 SDK) and
shell-docs build passes.
Sam Julien