feat: add langchain deepagents backend integration#1
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feat: add langchain deepagents backend integration#1johannhartmann wants to merge 4 commits intomainfrom
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Implement SandboxBackendProtocol for langchain-deepagents, providing sandbox lifecycle management, file I/O, and code execution via the k8s-agent-sandbox Python SDK. - AgentSandboxBackend wrapping Sandbox handles for execute, read, write, edit, grep, glob, upload, and download operations - Path virtualization under configurable root_dir with escape detection - SandboxPolicyWrapper for path and command restrictions - WarmPoolBackend for pre-warmed sandbox pod adoption - create_sandbox_backend_factory for dependency-injected construction - 57 unit tests covering backend lifecycle, file ops, and policies - Makefile test-langchain target and test-unit CI registration Signed-off-by: Johann-Peter Hartmann <johann-peter.hartmann@mayflower.de>
End-to-end test exercising the LangChain backend against a kind cluster: execute, write, read, edit, grep, glob, upload, and download. Includes module-level skip guard when langchain-agent-sandbox is not installed. Updates dev/tools/test-e2e to install langchain-agent-sandbox in the e2e test virtual environment. Signed-off-by: Johann-Peter Hartmann <johann-peter.hartmann@mayflower.de>
Example application demonstrating the LangChain backend with sandbox templates, skills definitions, and a kind cluster test script. Includes README for the langchain-agent-sandbox package with usage examples for direct sandbox, template-based, and warm pool modes. Signed-off-by: Johann-Peter Hartmann <johann-peter.hartmann@mayflower.de>
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…vior Fix _to_internal() rejecting valid filenames starting with '..' (e.g. '..foo') by tightening the escape check to match only '..' or '../'. Propagate actual exception messages in read() errors instead of a generic 'not found' message. Use grep -Z for null-byte filename delimiters to correctly handle filenames containing colons, with a fallback to colon splitting. Preserve partial find results when non-zero exit codes come from permission errors on individual subdirectories. Use find -L to follow symlinks so symlinked directories are classified correctly in glob_info().
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What: Adds langchain-agent-sandbox integration package for LangChain DeepAgents, including adapter implementation, tests, and docs.
Testing