Offer explicit retry after media preview loading failures

docs/MEDIA-PREVIEW.md

@@ -19,7 +19,7 @@ Arbitrary paths, remote URLs, query strings and traversal are not preview grants
 The generic Tauri asset protocol is disabled in the new configuration.
 Index-change notifications also advance the preview selection identity, so a
 same-path image/recording reloads rather than retaining previously decoded media.
-Failed native preview preparation now offers an explicit **Retry preview**
+Failed native preview preparation and image/audio/video loading now offer an explicit **Retry preview**
 button. It invalidates the old request revision and cannot restart a selection
 that has since changed. There is no automatic retry loop. The added regression
 passed with all 60 frontend tests, formatting and the production frontend build.