fix(database): harden worker transaction cleanup

- Catch rollback callback exceptions during worker cleanup
- Log cleanup callback failures as critical
- Add regression coverage for worker-mode rollback cleanup

Signed-off-by: memleakd <121398829+memleakd@users.noreply.github.com>

Author: memleakd

system/Database/Config.php

@@ -184,7 +184,12 @@ public static function cleanupForWorkerMode(): void
                 log_message('error', "Uncommitted transaction detected in database group '{$group}'. Transactions must be completed before request ends.");
 
                 while ($connection->transDepth > 0) {
-                    $connection->transRollback();
+                    try {
+                        $connection->transRollback();
+                    } catch (\Throwable $e) {
+                        log_message('critical', $e->getMessage());
+                        break;
+                    }
                 }
             }
 

tests/system/Database/Live/WorkerModeTest.php

@@ -18,6 +18,7 @@
 use CodeIgniter\Test\CIUnitTestCase;
 use CodeIgniter\Test\DatabaseTestTrait;
 use PHPUnit\Framework\Attributes\Group;
+use RuntimeException;
 
 /**
  * @internal
@@ -48,6 +49,22 @@ public function testCleanupForWorkerMode(): void
         $this->assertNotFalse($this->getPrivateProperty($conn, 'connID'));
     }
 
+    public function testCleanupForWorkerModeLogsRollbackCallbackException(): void
+    {
+        $conn = Config::connect();
+        $this->assertInstanceOf(BaseConnection::class, $conn);
+
+        $conn->transStart();
+        $conn->afterRollback(static function (): void {
+            throw new RuntimeException('Rollback callback failed.');
+        });
+
+        Config::cleanupForWorkerMode();
+
+        $this->assertSame(0, $conn->transDepth);
+        $this->assertLogged('critical', 'Rollback callback failed.');
+    }
+
     public function testReconnectForWorkerMode(): void
     {
         $conn = Config::connect();