feat: add video playback support in lightbox and photo grid

- Lightbox renders <video> with controls for video assets
- PhotoGrid shows video indicator overlay on video thumbnails
- Skip video preloading in lightbox (streams on demand)
- Add video-related CSS styles
- Update catch-all page to pass video URLs to components

app/[...path]/AlbumDetailView.tsx

@@ -34,9 +34,9 @@ export function AlbumDetailView({
             {subtitle}
           </p>
         )}
+        {album.description && <p className="album-header__description">{album.description}</p>}
         <p className="album-header__meta">
           {images.length} {images.length === 1 ? 'photo' : 'photos'}
-          {album.description && ` · ${album.description}`}
         </p>
       </div>
       <PhotoGrid assets={images} layout={layout} gridStyle={gridStyle} />

app/[...path]/PhotoGrid.tsx

@@ -15,9 +15,11 @@ import { FadeIn } from '@/components/FadeIn';
 
 export interface PhotoItem {
   id: string;
+  type: 'image' | 'video';
   thumbUrl: string;
   previewUrl: string;
   originalUrl: string;
+  videoUrl?: string;
   exifUrl: string;
   blurDataURL?: string;
   dominantColor?: string;
@@ -173,6 +175,14 @@ export function PhotoGrid({ assets, layout = 'masonry', gridStyle }: PhotoGridPr
               ? { placeholder: 'blur' as const, blurDataURL: asset.blurDataURL }
               : {})}
           />
+          {asset.type === 'video' && (
+            <div className="photo-grid__item-play" aria-hidden="true">
+              <svg viewBox="0 0 24 24" fill="currentColor">
+                <circle cx="12" cy="12" r="12" fillOpacity="0.55" />
+                <polygon points="10,8 10,16 17,12" fill="white" />
+              </svg>
+            </div>
+          )}
           {(asset.camera || asset.lens) && (
             <div className="photo-grid__item-exif" aria-hidden="true">
               {[asset.camera, asset.lens, asset.focalLength].filter(Boolean).join(' · ')}

app/[...path]/page.tsx

@@ -20,6 +20,7 @@ import { PhotoGrid, type PhotoItem } from './PhotoGrid';
 import {
   imageUrl,
   exifUrl,
+  videoUrl,
   assetPlaceholder,
   assetExifSummary,
   assetAspectRatio,
@@ -50,7 +51,7 @@ export async function generateMetadata({ params }: PathPageProps): Promise<Metad
     const album = await immich.getAlbumBySlug(path[1], slug);
     if (album) {
       title = album.albumName;
-      const count = album.assets.filter((a) => a.type === 'IMAGE').length;
+      const count = album.assets.filter((a) => a.type === 'IMAGE' || a.type === 'VIDEO').length;
       subtitle = `${count} photo${count === 1 ? '' : 's'}`;
     }
   } else if (immich.isSubpageSlug(slug)) {
@@ -61,7 +62,7 @@ export async function generateMetadata({ params }: PathPageProps): Promise<Metad
         const album = await immich.getAlbumBySlug(result.albums[0].slug, slug);
         if (album) {
           title = album.albumName;
-          const count = album.assets.filter((a) => a.type === 'IMAGE').length;
+          const count = album.assets.filter((a) => a.type === 'IMAGE' || a.type === 'VIDEO').length;
           subtitle = `${count} photo${count === 1 ? '' : 's'}`;
         }
       } else {
@@ -72,7 +73,7 @@ export async function generateMetadata({ params }: PathPageProps): Promise<Metad
     const album = await immich.getAlbumBySlug(slug);
     if (album) {
       title = album.albumName;
-      const count = album.assets.filter((a) => a.type === 'IMAGE').length;
+      const count = album.assets.filter((a) => a.type === 'IMAGE' || a.type === 'VIDEO').length;
       subtitle = `${count} photo${count === 1 ? '' : 's'}`;
     }
   }
@@ -89,15 +90,18 @@ export async function generateMetadata({ params }: PathPageProps): Promise<Metad
 /** Map Immich assets to PhotoItem props for the grid/lightbox. */
 function toPhotoItems(assets: ImmichAsset[], showExif: boolean): PhotoItem[] {
   return assets
-    .filter((a) => a.type === 'IMAGE')
+    .filter((a) => a.type === 'IMAGE' || a.type === 'VIDEO')
     .map((a) => {
       const ph = assetPlaceholder(a);
-      const exif = showExif ? assetExifSummary(a) : undefined;
+      const exif = showExif && a.type === 'IMAGE' ? assetExifSummary(a) : undefined;
+      const isVideo = a.type === 'VIDEO';
       return {
         id: a.id,
-        thumbUrl: imageUrl(a.id, 'preview'),
+        type: isVideo ? 'video' : 'image',
+        thumbUrl: imageUrl(a.id, 'thumbnail'),
         previewUrl: imageUrl(a.id, 'preview'),
         originalUrl: imageUrl(a.id, 'original'),
+        ...(isVideo ? { videoUrl: videoUrl(a.id) } : {}),
         exifUrl: exifUrl(a.id),
         ...(ph ? { blurDataURL: ph.blurDataURL, dominantColor: ph.dominantColor } : {}),
         ...(exif ?? {}),