I have an existing front-end codebase for an Instagram-style app here: https://github.com/ZinebEsso/instagram_clone. What I now need is a fully functional backend that plugs straight into that repo. Core requirement basic essentials. Sign up, login, post media, following, block, settings : change Email, change Password, privacy, edit profile, logout, delete account. Tech stack guidance Please build against an SQL database (MySQL or PostgreSQL—whichever you prefer). Keep the schema clean and easy to migrate. The front end is written in React/TypeScript, so a RESTful or very lightweight GraphQL layer is fine as long as the endpoints are predictable.