Add MODEL-CARBON-01 rule to prevent Carbon casts in models

Remove auto-generated tests and .expect files

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/RSpade/Core/Session/Session.php

@@ -41,7 +41,7 @@ use App\RSpade\Core\Session\User_Agent;
  */
 /**
  * _AUTO_GENERATED_ Database type hints - do not edit manually
- * Generated on: 2025-12-10 02:59:33
+ * Generated on: 2025-12-25 20:57:55
  * Table: _sessions
  *
  * @property int $id
@@ -63,7 +63,7 @@ use App\RSpade\Core\Session\User_Agent;
  * @mixin \Eloquent
  */
 class Session extends Rsx_System_Model_Abstract
-    {
+     {
     // Enum definitions (required by abstract parent)
     public static $enums = [];