Per-window installs of the two QApplication-level filters (cursor,
wheel guard) stacked one stale copy per MainWindow; now installed once
per process, parented to the app. closeEvent overrides in the baton
dialogs replaced by finished.connect(timer.stop); keyPressEvent in
VideoGraphicsView replaced by WidgetShortcut QShortcuts; hover
enter/leave overrides in PlayPauseButton replaced by underMouse();
ValueLabel inherits ClickableLabel instead of duplicating its
mousePressEvent. Dead raster-timer branch and a PyQt5-era
event-position fallback deleted; redundant try/except and getattr
guards dropped now that class-level defaults cover pre-init reads.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
duan_jandClaude Fable 5
c24da7739b