feat: support explicit instance data deletion

internal/platform/files/reparse_windows.go

@@ -0,0 +1,13 @@
+//go:build windows
+
+package files
+
+import (
+	"io/fs"
+	"syscall"
+)
+
+func isReparsePoint(info fs.FileInfo) bool {
+	attributes, ok := info.Sys().(*syscall.Win32FileAttributeData)
+	return ok && attributes.FileAttributes&syscall.FILE_ATTRIBUTE_REPARSE_POINT != 0
+}