feat: notifications inbox page

The bell only ever showed the last 30; add a full paginated /notifications
page, per-notification mark-read, and a shared notificationHref helper so
the bell and the page route identically instead of duplicating the logic.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/web/messages/fr.json

@@ -24,6 +24,12 @@
     "title": "Notifications",
     "empty": "Aucune notification pour l'instant.",
     "markAllRead": "Tout marquer comme lu",
+    "viewAll": "Tout voir",
+    "loading": "Chargement…",
+    "loadMore": "Charger plus",
+    "loadFailed": "Échec du chargement des notifications. Vérifiez votre connexion et réessayez.",
+    "retry": "Réessayer",
+    "unread": "Non lu",
     "follow": "{name} vous suit désormais",
     "comment": "{name} a commenté votre recette",
     "reply": "{name} a répondu à votre commentaire",