AI-Powered Neighbourhood App Development

I want a full-stack developer who is comfortable driving the entire build of a neighbourhood community app by leveraging AI prompts and generators to keep the cost low. I need you to plan the database, write the backend and frontend code, and deliver a clean, scalable structure that I can maintain after launch.

Core features the app must support:
• Post updates, photos and local news
• Buy, sell or give away items nearby
• Report local issues and ask neighbours for help

My expectation is an end-to-end solution: mobile apps (iOS and Android), an intuitive web admin panel, secure user authentication and a cloud database. Please highlight any low-code or AI-assisted frameworks you intend to use, along with your estimated timeline and a brief outline of milestones. If you have examples of similar community apps you have built, include them so I can see your approach in action.