INBOX-1: Anfragen-Posteingang UI - Liste (Status-Filter, Sync-Button mit MailNotConfigured-Hinweis), Detail (Triage/Zuordnen/Verwerfen, KI-Entwurf mit AiKeyMissing-Hinweis, bestaetigter Versand) + nav + 6 e2e-Specs (Mock um /api/requests erweitert)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

gerbil-manager-web/src/format/labels.ts

@@ -17,3 +17,16 @@ export function formatDate(iso: string | null | undefined): string {
   if (!y || !m || !d) return iso
   return `${d}.${m}.${y}`
 }
+
+/** INBOX-1: ISO-Zeitstempel → "TT.MM.JJJJ, HH:MM" (lokale Zeit, de-DE). */
+export function formatDateTime(iso: string): string {
+  const date = new Date(iso)
+  if (Number.isNaN(date.getTime())) return iso
+  return date.toLocaleString('de-DE', {
+    day: '2-digit',
+    month: '2-digit',
+    year: 'numeric',
+    hour: '2-digit',
+    minute: '2-digit',
+  })
+}