feat(random-mix): context-aware remix button + genre reset chip

Remix button now targets the active context: relabels to "{{genre}} neu
mixen" when a genre is selected and re-fetches that genre instead of the
global random pool. "Alle Songs" chip added as first genre option to
reset back to the full library mix without leaving the page.

Also fixes album-grid cards stretching to full page height on macOS
WebKit (align-items: start on .album-grid-wrap).

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

src/locales/nl.ts

@@ -217,6 +217,8 @@ export const nlTranslation = {
     title: 'Willekeurige mix',
     remix: 'Opnieuw mixen',
     remixTooltip: 'Nieuwe willekeurige nummers laden',
+    remixGenre: '{{genre}} mixen',
+    remixTooltipGenre: 'Nieuwe {{genre}}-nummers laden',
     playAll: 'Alles afspelen',
     trackTitle: 'Titel',
     trackArtist: 'Artiest',
@@ -238,6 +240,7 @@ export const nlTranslation = {
     blacklistToggle: 'Trefwoordfilter',
     genreMixTitle: 'Genremix',
     genreMixDesc: 'Top 20 genres op aantal nummers — klik voor een willekeurige mix',
+    genreMixAll: 'Alle nummers',
     genreMixLoadMore: '10 meer laden',
     genreMixNoGenres: 'Geen genres gevonden op server.',
     shuffleGenres: 'Andere genres tonen',