fix 3

server/services/appwriteAdmin.js

@@ -95,6 +95,15 @@ export async function getCustomerByAppwriteUserId(appwriteUserId) {
   return docs[0] || null
 }
 
+export async function getCustomerByEmail(email) {
+  if (!email) return null
+  const docs = await listDocuments(config.collections.customers, [
+    Query.equal('email', email.trim()),
+    Query.limit(1),
+  ])
+  return docs[0] || null
+}
+
 export async function getPortalAccessByCustomerId(customerId) {
   const docs = await listDocuments(config.collections.customerPortalAccess, [
     Query.equal('customerId', customerId),
@@ -133,7 +142,6 @@ export async function upsertWebsiteProjectByRepo(repoFullName, data) {
   })
 }
 
-/** @deprecated Nur für Kompatibilität – nutzt native fetch */
 export function createAdminClient() {
   return { usesNativeFetch: true, databaseId: WOMS_DATABASE_ID }
 }