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>

3 files changed, 6 insertions, 4 deletions

diff --git a/app.rb b/app.rb
index ff1e1fa..7d6489a 100644
--- a/app.rb
+++ b/app.rb
@@ -531,7 +531,7 @@ def all_media_entries(top_dirs: nil)
     rel  = dir.delete_prefix(MEDIA_ROOT).delete_prefix('/')
     data = load_album(dir)
     next [] if data['visible'] == false && !admin?
-    album_files(dir, data).select { |e| %i[image video].include?(e[:type]) }.map do |e|
+    album_files(dir, data).select { |e| %i[image video].include?(e[:type]) && !e[:transcoded_to] }.map do |e|
       e.merge(file_rel: rel.empty? ? e[:name] : "#{rel}/#{e[:name]}")
     end
   end
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') {
diff --git a/views/album.erb b/views/album.erb
index 4f261c4..934980b 100644
--- a/views/album.erb
+++ b/views/album.erb
@@ -108,7 +108,9 @@
 <script>
 const ENTRIES = <%= @entries.map { |e|
   file_rel = @rel.empty? ? e[:name] : "#{@rel}/#{e[:name]}"
-  e.merge(src: "/media/#{file_rel}")
+  play_name = e[:transcoded_to] || e[:name]
+  play_rel  = @rel.empty? ? play_name : "#{@rel}/#{play_name}"
+  e.merge(src: "/media/#{file_rel}", play_src: "/media/#{play_rel}")
 }.to_json %>;
 </script>
-<script src="/js/album.js?v=6"></script>
+<script src="/js/album.js?v=7"></script>