feat: json importer

internal/application/application.go

@@ -100,12 +100,17 @@ func (a *Application) ImportSpells(
 	name string,
 	r io.Reader,
 ) error {
+	ctx, cancel := context.WithCancel(ctx)
+	defer cancel()
+
 	ch, errCh, err := importer.Import(ctx, name, r)
 	if err != nil {
+		cancel()
 		return err
 	}
 
 	if err := a.spellCmd.Import(ctx, ch); err != nil {
+		cancel()
 		return err
 	}