fix: Don't use platform-specific path libraries for tar-internal path parsing

internal/fs/filesystem.go

@@ -5,7 +5,7 @@ import (
 	"errors"
 	"log"
 	"os"
-	"path/filepath"
+	"path"
 	"time"
 
 	models "github.com/pojntfx/stfs/internal/db/sqlite/models/metadata"
@@ -92,7 +92,7 @@ func (f *FileSystem) Open(name string) (afero.File, error) {
 
 		hdr.Name,
 
-		filepath.Base(hdr.Name),
+		path.Base(hdr.Name),
 		NewFileInfo(hdr),
 
 		f.onHeader,

pkg/recovery/fetch.go

@@ -5,7 +5,7 @@ import (
 	"bufio"
 	"io"
 	"io/fs"
-	"path/filepath"
+	"path"
 
 	"github.com/pojntfx/stfs/internal/compression"
 	"github.com/pojntfx/stfs/internal/converters"
@@ -81,7 +81,7 @@ func Fetch(
 
 	if !preview {
 		if to == "" {
-			to = filepath.Base(hdr.Name)
+			to = path.Base(hdr.Name)
 		}
 
 		if hdr.Typeflag == tar.TypeDir {