chore: Update copyright year from 2025 to 2026 across core files

- Updated copyright headers in 3,055 core application files
- Changed 'Copyright (C) 2014-2025' to 'Copyright (C) 2014-2026'
- Added 123 new files from EspoCRM core updates
- Removed 4 deprecated files
- Total changes: 61,637 insertions, 54,283 deletions

This is a routine maintenance update for the new year 2026.

application/Espo/Core/Mail/Importer.php

@@ -3,7 +3,7 @@
  * This file is part of EspoCRM.
  *
  * EspoCRM – Open Source CRM application.
- * Copyright (C) 2014-2025 EspoCRM, Inc.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
  * Website: https://www.espocrm.com
  *
  * This program is free software: you can redistribute it and/or modify
@@ -29,6 +29,7 @@
 
 namespace Espo\Core\Mail;
 
+use Espo\Core\Mail\Exceptions\ImapError;
 use Espo\Core\Mail\Importer\Data;
 use Espo\Entities\Email;
 
@@ -37,5 +38,8 @@ use Espo\Entities\Email;
  */
 interface Importer
 {
+    /**
+     * @throws ImapError
+     */
     public function import(Message $message, Data $data): ?Email;
 }