remove codeigniter

app/Models/PaymentNotificationLog.php

@@ -8,7 +8,7 @@ class PaymentNotificationLog extends BaseModel
 {
     protected $table = 'payment_notification_logs';
 
-    // CI: useTimestamps = false (created_at / sent_at are managed manually)
+    // legacy: useTimestamps = false (created_at / sent_at are managed manually)
     public $timestamps = false;
 
     protected $fillable = [
@@ -53,7 +53,7 @@ class PaymentNotificationLog extends BaseModel
     }
 
     /**
-     * Equivalent of CI existsForPeriod()
+     * Equivalent of legacy existsForPeriod()
      */
     public static function existsForPeriod(int $parentId, int $year, int $month, string $type): bool
     {
@@ -66,7 +66,7 @@ class PaymentNotificationLog extends BaseModel
     }
 
     /**
-     * Equivalent of CI listLogs()
+     * Equivalent of legacy listLogs()
      * $from/$to should be DATETIME strings.
      */
     public static function listLogs(?string $from = null, ?string $to = null, ?string $type = null): array