Just a small nitpick, but I like to use A1111 in a private tab. Bit of a pain to close the tab that starts in the regular one. Is there a setting or command line thingy to have it start up in a private one?
Alternatively, you could create a profile, for example name your profile a1111. To summon it run firefox -p a1111 then change the options to always clear the cache, never store cookies, never keep a history, and you have effectively created a private browsing tab.
Or better yet, you have a completely separate profile just for A1111 that will not interfere with your regular browsing.
It should be fairly easy to find the line to launch a browser window in the config then to launch the profile you just created.