The loop building the media credits assigned instead of appending, so an enclosure with several credits only kept the last one.
`app/views/index/rss.phtml` builds the `<media:credit>` elements for an enclosure in a loop, but assigns instead of appends:
```php
$mediaCredits = '';
foreach ($credits as $credit) {
$mediaCredits = '<media:credit>' . $credit . '</media:credit>';
}
```
So an enclosure with three credits emits only the last one. Every iteration throws away what the previous one built.
This came in with #6272 ("Allow multiple authors on enclosures", which closed#5066). Parsing and display got multi-credit support, but FreshRSS's own generated RSS still passes on a single credit, so a downstream reader subscribing to a FreshRSS feed sees the same symptom #5066 described.
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
