feat(infra): validate imports from langchain
#1445
Open
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Introduces an automated system to detecting and manage incorrect imports from
langchain_corein favor of using the re-exports fromlangchain.check-import-mappings.ymlworkflow to periodically analyze the latest version oflangchain_core, check for re-exports inlangchain(and generateimport_mappings.json), and automatically create PRs to update the mappings cache in this repo.check_import_mappings.pyto fetch latest package releases, introspectlangchainpublic__init__files, and generate a detailed mapping of re-exported members fromlangchain_core. Uses the previous localimport_mappings.jsoncheck-pr-imports.ymlworkflow to run on PRs, ensuring inbound contributions uselangchainimports when available, and comment on PRs with specific guidance if issues are found.check_pr_imports.pyto analyze PR diffs against the import mappings, detect incorrectlangchain_coreimports, and output suggested fixes for contributors.