feat: soft-delete for teamer accounts

addresses #869dv9br3

src/BusProNet/UserDataHandler.php

@@ -97,6 +97,13 @@ class UserDataHandler
         /** @var User $user */
         $user = $users[0];
 
+        // A deleted account still has to be matched here, otherwise the caller would take
+        // it for an unknown person and create a second account for them - resurrecting
+        // them under a new row. It is returned as found, without writing anything to it.
+        if (true === $user->isDeleted()) {
+            return $user;
+        }
+
         $addressId = $profileResponse->getAddressId();
         $personId = $profileResponse->getPersonId();
         if (null === $addressId || null === $personId) {
@@ -232,6 +239,12 @@ class UserDataHandler
      */
     public function disableForRevokedCrmRoles(User $user): void
     {
+        // a deleted account is already excluded from everything and must not be written
+        // to by the CRM at all
+        if (true === $user->isDeleted()) {
+            return;
+        }
+
         // an existing block may be a disciplinary one and must never be overwritten, but
         // findLocalUser() may have refreshed the BusPro ids and nothing else flushes here
         if (true === $user->isDisabled()) {