Service Worker Cache Cleaner

Reused localhost ports serve stale assets from old service workers and caches — the DevTools fix is 5-10 manual clicks every time. This resets service workers and Cache Storage for the current origin only, in one click, without touching cookies, localStorage, or IndexedDB. Free forever: inspect and nuke any single origin. Pro: stale-age detection, an origin health score, batch cleanup across every open localhost tab at once, a cleanup history log, and optional push notifications when a cleanup completes.