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The previous implementation called os.Lstat(absPath) which only avoids following the *final* path component. A PR committing .review-bot/ as a directory symlink pointing outside the repo would pass the filepath.Rel confinement check because the textual path was inside the root while the resolved destination was not. Fix: call filepath.EvalSymlinks after filepath.Abs to resolve ALL symlink components before the confinement check. If EvalSymlinks fails (dangling symlink, nonexistent target) the path is rejected. The filepath.Rel check then operates on the fully-resolved path. Semantic change: file-level in-repo symlinks (target also within root) are now allowed — the invariant is about where the content lives, not whether the entry is a symlink. The test TestValidateDocmapPath_Symlink is updated to test an out-of-repo symlink target, which must still be rejected. Tests: - TestValidateDocmapPath_DirSymlinkBypass: reproduces the attack vector (dir symlink bypassing textual confinement check) and verifies it is now rejected - TestMainSubprocess_InvalidDocMapPath: subprocess test via validate-docmap subcommand — ../../../etc/passwd rejected (closes #146) - TestMainSubprocess_InvalidDocMapFile: subprocess test — nonexistent file rejected (closes #146) Coverage: 54.3% (was 54.1%)