chore: merge main into feat/persons-redesign-concept-a

Resolved conflicts in messages/de.json, en.json, es.json by keeping
both the persons-redesign keys (feature branch) and the notification
keys (main) in all three locale files.

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

frontend/messages/es.json

@@ -345,5 +345,19 @@
 	"persons_new_birth_year": "Año de nacimiento",
 	"persons_new_death_year": "Año de fallecimiento",
 	"persons_new_notes": "Notas",
-	"person_save_changes": "Guardar cambios"
+	"person_save_changes": "Guardar cambios",
+	"notification_view_all": "Ver todas →",
+	"notification_history_heading": "Notificaciones",
+	"notification_history_view_link": "Ver historial de notificaciones →",
+	"notification_filter_all": "Todas",
+	"notification_filter_unread": "No leídas",
+	"notification_filter_mention": "Mención",
+	"notification_filter_reply": "Respuesta",
+	"notification_mark_all_read_aria": "Marcar todas las notificaciones como leídas",
+	"notification_load_more": "Cargar anteriores",
+	"notification_empty_history": "Sin notificaciones",
+	"notification_empty_history_body": "Aquí aparecerán las menciones y respuestas a tus comentarios.",
+	"notification_row_aria": "{actor} {type} en \"{title}\" — {time} — {readState}",
+	"notification_read_state_read": "leído",
+	"notification_read_state_unread": "no leído"
 }