The provider UUID was generated once, kept in extension storage and announced to every page on every load, so any site could read it as a stable identifier for the install across sites and browser restarts. inpage.js now generates one UUID per page load, shared by every announcement in that load, and stores nothing. The eip6963Uuid storage key and the AUTISTMASK_PROVIDER_UUID content-script message are removed. The key was never part of the versioned autistmask profile, so the state schema is untouched. Two inpage.js message listeners lose the leftover name onUuid. The test posts each load the same stored UUID the way the old content script did, and asserts that no load announces it and that two loads announce different UUIDs. Model: opus-5-5