My CodeIgniter 4 travel-booking site, holidaysg.com, is almost ready to go live and I now need three clear things wrapped up: • Payment integration – Stripe is first priority and must handle one-time, multi-currency transactions. I also want PayNow (Singapore) and a direct bank-transfer option surfaced at checkout, so you’ll wire those in alongside Stripe’s PHP SDK. • Navigation tweak – on klook.com the fourth item in the header slides forward to the third slot; I want that exact switch on my own menu so the user flow matches. • Light API assistance – another developer is building a REST API that powers mobile apps. I’ll need you to look over his work, answer questions, and patch any CodeIgniter routing or controller issues that block .