Redesign user dashboard with overview tab and i18n payment copy.

Consolidate profile and security into AccountTab, add shared dashboard components, and move awaiting-approval payment messages to translations.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/i18n/locales/en.json

@@ -164,6 +164,14 @@
       "backHome": "Back to Home"
     }
   },
+  "dashboard": {
+    "payment": {
+      "received": "Payment received",
+      "receivedConfirmShortly": "Payment received. We will confirm it shortly.",
+      "receivedConfirmSoon": "Payment received. We will confirm it shortly.",
+      "confirmForEvent": "We will confirm your {amount} payment for {event} shortly. Nothing else needed."
+    }
+  },
   "community": {
     "title": "Join Our Community",
     "subtitle": "Connect with us on social media and stay updated",

frontend/src/i18n/locales/es.json

@@ -164,6 +164,14 @@
       "backHome": "Volver al Inicio"
     }
   },
+  "dashboard": {
+    "payment": {
+      "received": "Pago recibido",
+      "receivedConfirmShortly": "Pago recibido. Lo confirmaremos en breve.",
+      "receivedConfirmSoon": "Pago recibido. Lo confirmaremos pronto.",
+      "confirmForEvent": "Confirmaremos tu pago de {amount} para {event} en breve. No necesitas hacer nada más."
+    }
+  },
   "community": {
     "title": "Únete a Nuestra Comunidad",
     "subtitle": "Conéctate con nosotros en redes sociales",