Run modernise on the project

This will be available in "go fix" within Go 1.26 but in the meantime:

go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix -test ./...

ui/browsing/albumspage.go

@@ -62,10 +62,7 @@ func (a *albumsPageAdapter) Route() controller.Route { return controller.AlbumsR
 
 func (a *albumsPageAdapter) SortOrders() ([]string, int) {
 	orders := a.mp.AlbumSortOrders()
-	sortOrder := slices.Index(orders, a.cfg.SortOrder)
-	if sortOrder < 0 {
-		sortOrder = 0
-	}
+	sortOrder := max(slices.Index(orders, a.cfg.SortOrder), 0)
 
 	return util.LocalizeSlice(orders), sortOrder
 }

ui/browsing/artistspage.go

@@ -47,10 +47,7 @@ func (a *artistsPageAdapter) Route() controller.Route { return controller.Artist
 
 func (a *artistsPageAdapter) SortOrders() ([]string, int) {
 	orders := a.mp.ArtistSortOrders()
-	sortOrder := slices.Index(orders, a.cfg.SortOrder)
-	if sortOrder < 0 {
-		sortOrder = 0
-	}
+	sortOrder := max(slices.Index(orders, a.cfg.SortOrder), 0)
 
 	return util.LocalizeSlice(orders), sortOrder
 }