SiteAmnesia от Emerson Veenstra

Small, simple extension to delete stored website data from sites you visit. You sele ct which domains you want to keep data for, and the rest are automatically deleted after there's no open tabs containing data from that domain

There is a global on/off switch, which is set to off by default so you can change settings before it starts deleting

See the repository for more information and details: https://codeberg.org/emersonveenstra/siteamnesia