Buchungskalender: Verdrahtung, Router-Gerüste und API-Vertrag

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

test/termineSetup.test.js

@@ -88,7 +88,7 @@ test('Schema: Attribute je Collection wie in der Spezifikation', () => {
   ])
   assert.deepEqual(keysOf('termineClaims'), ['featureId', 'ressourceId', 'bookingId', 'zelle', 'bis'])
   assert.deepEqual(keysOf('termineOutbox'), [
-    'featureId', 'bookingId', 'art', 'an', 'fromName', 'replyTo', 'subject', 'html', 'text', 'ics', 'icsMethod',
+    'featureId', 'bookingId', 'art', 'an', 'fromName', 'replyTo', 'subject', 'html', 'text', 'ics', 'icsMethod', 'anhang',
     'status', 'versuche', 'naechsterVersuch', 'gesendetAt', 'fehler', 'createdAt',
   ])
 })