- show_error_dialog() aborted when QApplication construction itself was
the failure; fall back to stderr so the real error is visible.
- Auto-update QThread cleanup dropped the last Python reference while
run() could still be unwinding ("QThread: Destroyed while thread is
still running"); defer destruction to deleteLater on finished.
- macOS ffmpeg install no longer curl|bash-es the Homebrew bootstrap
script unattended; it now asks the user to install Homebrew
themselves and fails cleanly.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Jaroslav Beneš
1c885e3fc5