When poster is not available during scraping, first photo is stored as poster; removed client-side fallback. Added screencap album fallback to Jules Jordan scraper. Simplified JJ page traversal.

src/releases.js

@@ -46,7 +46,7 @@ async function curateRelease(release) {
                 target_id: release.id,
                 domain: 'releases',
             })
-            .orderBy('role'),
+            .orderBy(['role', 'index']),
     ]);
 
     return {
@@ -255,6 +255,7 @@ async function storeReleaseAssets(release, releaseId) {
             storePhotos(release.photos, {
                 targetId: releaseId,
                 subpath,
+                primaryRole: release.poster ? null : 'poster',
             }, identifier),
             release.poster && storePhotos([release.poster], {
                 role: 'poster',