InterruptMsg class

Message sent when an interrupt signal (SIGINT/Ctrl+C) is received.

This is distinct from QuitMsg in that it represents an external interrupt request rather than a programmatic quit command.

The model can handle this to:

• Prompt for confirmation before quitting
• Save state before exiting
• Cancel a long-running operation
• Ignore the interrupt entirely

Example

@override
(Model, Cmd?) update(Msg msg) {
  return switch (msg) {
    InterruptMsg() when hasUnsavedChanges => (
      copyWith(showConfirmDialog: true),
      null,
    ),
    InterruptMsg() => (this, Cmd.quit()),
    _ => (this, null),
  };
}