aryan4codes/GiftStack ? reverse-engineered prompt

Build me a simple web app called GiftStack for keeping track of gift ideas and planning presents for the people I care about.

I want to be able to add a person, save gift ideas for them, mark ideas as bought or already given, and quickly see what I have planned for upcoming birthdays or holidays. It should feel clean and easy to use, with a nice dashboard, a way to browse saved items, and forms for adding and editing details.

Please make it work like a real app with login and saved data, not just a mockup. Use the existing project setup, keep the design modern and responsive, and make sure the main flows are smooth on mobile too. If anything is unclear from the current code, check the project files and look up current docs online if you need to.