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CI pre-flight: fix: skip reparse points during -r on Windows - #1
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UTIL_isLink always returned 0 on non-POSIX platforms, and the Windows branch of UTIL_prepareFileList() had no reparse-point guard. As a result -r traversed junctions and symlinks found inside the input tree, combined with --rm this compressed and deleted files located outside the directory the user passed. Added a _WIN32 branch to UTIL_isLink() querying GetFileAttributesA(), with the FILE_ATTRIBUTE_REPARSE_POINT test applied only when the lookup succeeds. Such entries are skipped in UTIL_prepareFileList() unless --follow-links is set, mirroring the POSIX branch, including its level-2 warning. Covered by a new playTests.sh test asserting that a junction (Windows) or symlink (POSIX) pointing outside the tree is left untouched by -r --rm
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Pre-flight CI run for meta#4860 before it leaves draft. Same branch/code; this PR gets closed once the matrix is green.