Fix transcoded video playback in lightbox and slideshow

The HEVC-to-H.264 transcode kept the original file as a hidden
(non-admin) entry with transcoded_to set, but the lightbox <video>
element and the slideshow always pointed at the original file's URL.
Opening a transcoded video (e.g. via a direct ?photo= link) tried to
play the unsupported original codec instead of the browser-compatible
copy.

- album.erb/album.js: lightbox video now plays the transcoded file
  when present, while the "Download Original" link still serves the
  true original.
- all_media_entries: slideshow skips transcoded originals entirely
  since it has no separate download path.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/public/js/album.js b/public/js/album.js
index 3fca29b..17de0b6 100644
--- a/public/js/album.js
+++ b/public/js/album.js
@@ -68,7 +68,7 @@ function renderLightbox() {
     img.src = e.src; img.alt = e.title;
     img.classList.remove('hidden');
   } else if (e.type === 'video') {
-    vid.src = e.src;
+    vid.src = e.play_src || e.src;
     vid.classList.remove('hidden');
     vid.play().catch(() => {});
   } else if (e.type === 'audio') {