remove codeigniter

app/Models/MidtermExam.php

@@ -9,7 +9,7 @@ class MidtermExam extends BaseModel
     protected $table = 'midterm_exam';
 
     /**
-     * CI: useTimestamps = false (even though created_at/updated_at columns exist).
+     * legacy: useTimestamps = false (even though created_at/updated_at columns exist).
      * Keep it OFF to match behavior (you can still store created_at/updated_at manually).
      */
     public $timestamps = false;
@@ -52,7 +52,7 @@ class MidtermExam extends BaseModel
     }
 
     /**
-     * Equivalent of CI getMidtermExamScore()
+     * Equivalent of legacy getMidtermExamScore()
      */
     public static function getMidtermExamScore(
         int $studentId,