- add installer asset detection in update service
- add 'Download and install (setup)' action in update dialog
- bump app version to 2.1.2 and extend update service test
- added dedicated GUI updater executable and integrated launch path from main app
- added stable/beta update channel selection with persisted settings and checker support
- expanded CI/release validation to include updater and full test discovery
- quote env vars in cmd script for paths with spaces
- add update_error.log diagnostics and timeout while waiting for app exit
- bump APP_VERSION to 1.7.0 and update updater tests
