Download the installer for your platform below.
Windows - Pick the NSIS .exe for the smallest download (auto-installs the WebView2 runtime). The MSI is for IT-managed installs. SmartScreen may warn on first run; click More info then Run anyway.
macOS - Open the .dmg and drag the app into Applications. On first launch right-click and choose Open to bypass Gatekeeper.
Linux - Install the .deb with sudo dpkg -i salaat-widget_*_amd64.deb, or run the AppImage after chmod +x. GNOME users need the AppIndicator extension for the tray icon.