How to Use CodeIgniter Global Functions (e.g., helper(), model()) Inside Custom "Mana

I completely agree with your points. I actually chose the MVCM approach for precisely the reason you mentioned: to avoid any overlap or confusion with the existing "Services" system in CodeIgniter4. Using "Manager" classes makes the separation of concerns clearer in my projects, especially when dealing with complex business logic, and it aligns better with how I structure domains.