Test

Summary by Bito

• Introduces security and efficiency concerns in the file-handler module's enhanced file operations.
• Expands AdminController with new endpoints for managing admin tasks such as login, category and product management, and user profile updates.
• Adds new cartProductDao to facilitate cart-product operations in the data layer.
• Overall summary: Introduces comprehensive changes across multiple modules, including the file-handler module with security concerns, AdminController expansions, and addition of cartProductDao.