Unleash/unleash ? reverse-engineered prompt

Build me a self hosted feature flag platform like Unleash, with a clean web app where I can create projects, environments, and feature flags, then turn those flags on and off for different users or groups. I want a simple dashboard to see all my flags, their status, rollout settings, and variants, plus an API that apps can call to check whether a flag is enabled. It should work locally with Docker, include a default admin login for setup, and be easy to connect from frontend and backend apps using tokens. Please make it feel polished and practical, with the core flow focused on managing releases safely, testing features in production, and controlling rollouts without redeploying code. If you need to look up current docs online, do that.