Mtrini Workspace v0.8.2: on Linux, and it updates itself

Mtrini Workspace now comes for Linux as an AppImage, a .deb and a .tar.gz, next to the Windows installer. From this version on the app downloads new releases in the background, checks each against its published SHA-256, and installs it when you close the app. Also new: any number of custom OpenAI-compatible providers, and optional Mtrini accounts (Discord or GitHub), the groundwork for the Android app.