- fs-tree joins listed paths with the platform separator (Windows rows
previously leaked mixed separators)
- media route containment check goes through isWithin(): separator-
tolerant and case-insensitive on win32, so case-mismatched Windows
paths are not misclassified
- relativeTo compares case-insensitively (Windows / case-insensitive
macOS volumes) while keeping the caller's own casing in the output
- tests: platform-conditional path assertions, os.tmpdir() instead of
/tmp, isWithin/relativeTo/resolveSidebarPath win32 coverage
Menghuan1918
81ab0c5312