style: redesign mix cards with descriptions and top-aligned labels

Replaced redundant title/owner below cards with descriptive text
(DailyQ: customized selection, WeeklyQ: every Friday emphasis).
Moved qobuz badge and mix name to top of gradient card. Added
yourMixes/weeklyMixes i18n sections to de.json and fr.json.

src/lib/i18n/locales/fr.json

@@ -1485,5 +1485,15 @@
     "go": "Aller",
     "resolving": "Resolution...",
     "invalidLink": "Lien Qobuz invalide ou non pris en charge."
+  },
+  "yourMixes": {
+    "title": "DailyQ",
+    "subtitle": "Base sur vos ecoutes recentes.",
+    "cardDesc": "Sublimez votre journee avec une selection musicale personnalisee."
+  },
+  "weeklyMixes": {
+    "title": "WeeklyQ",
+    "subtitle": "Base sur vos ecoutes hebdomadaires.",
+    "cardDesc": "Un voyage hebdomadaire avec un mix frais <strong>chaque vendredi</strong>."
   }
 }