remove codeigniter

app/Models/EventCharges.php

@@ -9,7 +9,7 @@ class EventCharges extends BaseModel
 {
     protected $table = 'event_charges';
 
-    // ✅ CI: useTimestamps = true (created_at/updated_at)
+    // ✅ legacy: useTimestamps = true (created_at/updated_at)
     public $timestamps = true;
 
     protected $fillable = [
@@ -66,7 +66,7 @@ class EventCharges extends BaseModel
     }
 
     /**
-     * Equivalent of CI getChargesWithEventInfo()
+     * Equivalent of legacy getChargesWithEventInfo()
      * Returns rows with: event_charges.*, events.event_name, events.amount
      */
     public static function getChargesWithEventInfo(?int $parentId = null, ?string $schoolYear = null, ?string $semester = null): array