Team-Eingang: /api/team mit Appwrite-JWT fuer alle Mitarbeiter, CORS-Header fuer Uploads

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

server/routes/admin/switchLink.js

@@ -1,5 +1,6 @@
 import { Router } from 'express'
 import { config } from '../../config.js'
+import { appwriteAccountFromJwt } from '../../middleware/staffJwt.js'
 import { createStaffPreviewToken } from '../../services/staffPreviewTokens.js'
 import { resolveStaffAccount } from '../../services/staffAccount.js'
 
@@ -10,20 +11,6 @@ const router = Router()
  * ueber /account geprueft (eine Sitzung ohne zweiten Faktor bekommt dort 401), aber ohne Label-Pflicht:
  * jeder Mitarbeiter darf rueber, wie beim normalen Portal-Login.
  */
-async function appwriteAccountFromJwt(req) {
-  const match = (req.get('Authorization') || '').match(/^Bearer\s+(.+)$/i)
-  if (!match) return null
-  const response = await fetch(`${config.appwrite.endpoint}/account`, {
-    headers: {
-      'Content-Type': 'application/json',
-      'X-Appwrite-Project': config.appwrite.projectId,
-      'X-Appwrite-JWT': match[1],
-    },
-  })
-  if (!response.ok) return null
-  return response.json()
-}
-
 router.post('/', async (req, res) => {
   try {
     const user = await appwriteAccountFromJwt(req)