Thank you so much for the great review and the detailed feedback! I'm really glad to hear it's working well for you. Regarding Total Cookie Protection (network.cookie.cookieBehavior = 5), I've been meaning to check how it affects partitioned data but haven't had the chance yet. Your findings are very helpful, and I will definitely look into it soon.

Also, you are absolutely correct about the .metadata-v2 file. Since it's an internal bookkeeping file managed by Firefox, deleting the entire folder is unfortunately beyond current WebExtension API capabilities. However, please rest assured that websites have zero access to this file, meaning it cannot be used for tracking. The actual data payload is completely safely cleared. Thanks again for your support!