community: add PanelCallbackHandler #33190

Job	Run time
build	14s
cd libs/langchain / make extended_tests #3.9	42s
cd libs/langchain / make extended_tests #3.11	49s
cd libs/community / make extended_tests #3.9	2m 4s
cd libs/community / make extended_tests #3.11	2m 0s
cd libs/community / poetry run pytest -m compile tests/integration_tests #3.11	32s
cd libs/community / poetry run pytest -m compile tests/integration_tests #3.9	37s
cd libs/langchain / poetry run pytest -m compile tests/integration_tests #3.13	29s
cd libs/langchain / poetry run pytest -m compile tests/integration_tests #3.9	22s
cd . / make lint #3.12	1m 5s
cd . / make lint #3.9	57s
cd libs/community / make lint #3.13	2m 52s
cd libs/community / make lint #3.9	31s
cd libs/langchain / make lint #3.13	54s
cd libs/langchain / make lint #3.9	44s
cd libs/community / make test #3.13	2m 49s
cd libs/community / make test #3.9	43s
cd libs/langchain / make test #3.13	2m 42s
cd libs/langchain / make test #3.9	28s
test-doc-imports (3.12) / check doc imports #3.12	1m 2s
cd libs/community / make test # pydantic: ~=2.7.0, python: 3.11,	40s
cd libs/community / make test # pydantic: ~=2.8.0, python: 3.11,	39s
cd libs/community / make test # pydantic: ~=2.9.0, python: 3.11,	41s
cd libs/langchain / make test # pydantic: ~=2.7.0, python: 3.11,	40s
cd libs/langchain / make test # pydantic: ~=2.8.0, python: 3.11,	39s
cd libs/langchain / make test # pydantic: ~=2.9.0, python: 3.11,	39s
CI Success	1s
	26m 35s

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