I still don’t get it what your problem with Cookie AutoDelete is… and it seems nobody else does.
Please simply read at least the short description and settings carefully:
it deletes cookies which are not used by an open tab (after a definable time!) and you can whitelist other ones, you wish to keep forever.
So, once again:
- enable the Automatic Cleaning and set the Delay to 604800 seconds (= 7 days). – sorry for initially suggesting it in minutes… i guessed wrong.
- and additional disable Cleaning on StartUp, else all (not whitelisted) cookies will be deleted at browser start.
Although the delay is intended as a grace period for accidental closing a tab, I don’t see a reason why it shouldn’t work for a longer period (or at least to try it)…
And this is the only point which may be a problem for your use case: I have no idea if the grace period continues counting after Firefox is closed and opened again. and if yes, is it just counting down while firefox is running or are time-stamps used to delete cookies at clearly defined times…
So if the longer grace period causes problems in conjunction with closing & opening the browser, it may be worth a bug-report/feature-request at https://github.com/Cookie-AutoDelete/Cookie-AutoDelete/issues.
