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/Field/Link.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
@@ -29,7 +29,7 @@
 
 namespace Espo\Core\Field;
 
-use RuntimeException;
+use InvalidArgumentException;
 
 /**
  * A link value object. Immutable.
@@ -42,7 +42,7 @@ class Link
     public function __construct(string $id)
     {
         if (!$id) {
-            throw new RuntimeException("Empty ID.");
+            throw new InvalidArgumentException("Empty ID.");
         }
 
         $this->id = $id;