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--- name: project-vendor-boundary description: Overlay for app-owned versus vendored dependency boundaries. Portable across repos that vendor third-party code. Use when work touches vendored dependencies or their integration seam. --- # Project Vendor Boundary Read `AGENTS.md` first. This is a composable overlay, not a standalone workflow. Use alongside the repo's implementation skill when work touches vendored dependencies or their integration boundary. ## When to use The change involves vendored third-party code, the boundary between app-owned and vendored code, or dependency integration (subtrees, vendor directories, copied sources). ## Not for App-owned code that does not touch vendor boundaries (use the implementation skill directly), or release/packaging concerns (use **project-release-maintainer**). ## Rules - prefer app-side integration changes before editing vendored code - treat vendored code as subtree/vendor content, not normal project code - keep notices, provenance, and install rules aligned with vendor changes - avoid unrelated churn inside vendor trees