[AI-72] LangGraph plugin samples #1161

Job	Run time
build-lint-test (3.10, macos-intel)	22m 43s
build-lint-test (3.14, macos-intel)	36m 50s
build-lint-test (3.10, windows-latest)	17m 51s
build-lint-test (3.14, macos-arm)	17m 42s
build-lint-test (3.10, macos-arm)	13m 14s
build-lint-test (3.14, ubuntu-latest)	15m 9s
build-lint-test (3.14, windows-latest)	23m 2s
build-lint-test (3.10, ubuntu-latest)	12m 27s
	2h 38m 58s

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