remove codeigniter

app/Models/Staff.php

@@ -11,7 +11,7 @@ class Staff extends BaseModel
     protected $table = 'staff';
 
     /**
-     * CI: timestamps managed manually (created_at/updated_at set by caller/controller)
+     * legacy: timestamps managed manually (created_at/updated_at set by caller/controller)
      */
     public $timestamps = false;
 
@@ -66,7 +66,7 @@ class Staff extends BaseModel
     }
 
     /* ============================================================
-     * CI-compatible methods
+     * legacy-compatible methods
      * ============================================================
      */
 
@@ -104,7 +104,7 @@ class Staff extends BaseModel
 
         $userId = (int) $data['user_id'];
 
-        // Resolve school_year fallback like your CI logic
+        // Resolve school_year fallback like your legacy logic
         $schoolYear = $data['school_year'] ?? null;
         if ($schoolYear === null) {
             $existingAny = static::query()
@@ -177,7 +177,7 @@ class Staff extends BaseModel
     }
 
     /**
-     * CI-compatible boolean wrapper if you want the same signature.
+     * legacy-compatible boolean wrapper if you want the same signature.
      */
     public static function upsertBool(array $data): bool
     {