fix(platform): support Windows storage and native filesystem boundaries

internal/fileutil/path.go

@@ -0,0 +1,30 @@
+package fileutil
+
+import (
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+// IsLocalPath also rejects Windows aliases and invalid native filename characters.
+func IsLocalPath(name string) bool {
+	if !filepath.IsLocal(name) {
+		return false
+	}
+	if runtime.GOOS == "windows" {
+		if strings.ContainsAny(name, `<>:"\|?*`) {
+			return false
+		}
+		for _, c := range name {
+			if c < 32 {
+				return false
+			}
+		}
+		for _, part := range strings.Split(name, "/") {
+			if strings.HasSuffix(part, " ") || strings.HasSuffix(part, ".") {
+				return false
+			}
+		}
+	}
+	return true
+}