Please design detailed a plan for a magnificent and sophisticated dashboard web app:

- The app uses pnpm, tailwindcss@4 and react / next.js
- The app monitors system, docker, API endpoints, etc.
- The app is highly configurable through a configuration yml file
- The app can hot load the configuration file
- The app stores secrets in an .env file and interpolates them in the configuration file
- The app contains plenty of widgets, which can be configured
- The app offers widgets for all services in Projekte/stacks
- The app is configurable with CSS variables.
- The app offers browser real-time updates via WebSockets
- The app is deployable via docker (compose)

References:
- https://github.com/gethomepage/homepage