As the title says, this supports installation and startup on Windows and Linux, providing a LAN HTTP API server that supplies computer performance usage data to the Android dashboard app.
The Windows version is provided as an .exe installer, while the Linux version is packaged as a .deb. The Linux version is command-line only, and both versions support configuring automatic startup when the computer boots.
In the Android app, simply set the computer-side API address to display the performance dashboard. An automatic detection mechanism is used: while the computer is on, performance usage data is refreshed once per second. If the computer is shut down, a full-screen clock is displayed automatically, and the app checks every 30 seconds whether the computer has started. Once the computer-side service is running, the display switches back to the performance dashboard.
The source code is now available on GitHub: