shubham-dev-coder/ThinkAI ? reverse-engineered prompt

Build me a simple AI powered personal assistant app called ThinkAI that helps people organize tasks, thoughts, and everyday productivity.

I want a clean web app where someone can type in notes, ideas, reminders, or questions and get useful help from the AI. It should feel like a smart sidekick for planning your day, capturing thoughts quickly, and turning messy input into something organized. Use a basic MERN style setup with a React front end, a Node and Express backend, and MongoDB for storing user data and conversation history.

Make the interface modern and easy to use, with a friendly chat style experience and a place to view saved tasks or notes. If you need to look up current docs or best practices online, go ahead. Keep it polished, working end to end, and make sure the app is easy to run locally.