Option to delay Firefox updates until the browser is fully closed and the system has rebooted or shut down

'''Desired behaviour''' Please add an option that would make Firefox update only when: * '''a)''' Firefox is completely closed — no open windows, no active profiles, no running `firefox.exe` processes of any kind. * '''b) '''A Windows reboot or shutdown has occurred. '''Current problem''' Currently, Firefox sometimes initiates an update while a session is still open — for example, when opening a new profile or seemingly at random. This interrupts active work and forces the update at an inconvenient time, meaning all tabs and workflow are disrupted. '''Suggested improvements''' * A good extra option could be modelled on Windows Update, which provides a series of delay settings. * The update should wait until all `firefox.exe` processes have ended (currently, opening a new profile can trigger an update even with another profile running). * A forced update that disrupts current work feels overly aggressive, especially when the update is not mission-critical. Even if it is critical, the timing should be a user choice. '''Alternative approaches''' * A selection could be provided to wait until the user has naturally finished, with all instances closed by choice, or until the computer is restarted after a Windows boot. * A popup could appear with options to delay, or a notification saying "Update needed — please close browsers." There is no need to force this. '''Workaround difficulty''' At present, the only way to achieve this is by writing a script. This overly aggressive update behavior could instead be controlled by a simple setting for advanced users. Being overly concerned about security to this level, should be a user choice not force. Turning it off and making it manual is still not as helpful as automation. Great work, I just noticed this occurring several times in the few months mid session. All good wishes