Abo: Pilotliste mit '*' fuer Regelbetrieb

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

server/routes/abo.js

@@ -56,9 +56,11 @@ function publicSubscription(sub) {
   }
 }
 
+// ABO_PILOT_EMAILS: Liste erlaubter Kunden-E-Mails; '*' = alle Kunden (Regelbetrieb)
 function isPilotAllowed(customer) {
-  if (!config.abo.pilotEmails.length) return true
-  return config.abo.pilotEmails.includes(String(customer?.email || '').toLowerCase())
+  const list = config.abo.pilotEmails
+  if (!list.length || list.includes('*')) return true
+  return list.includes(String(customer?.email || '').toLowerCase())
 }
 
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