App.vue wraps the router view in a KeepAlive holding Home and the tool
page, so leaving for /tools/:slug and coming back neither re-runs the
homepage tests nor loses the scroll position; ToolPage (StandaloneTool
renamed) reads its slug reactively — the same instance now switches tool
on in-app navigation — and caches each visited tool per slug in its own
KeepAlive (max 8), dropping them all when the signed-in account goes
away (utils/tool-cache.js).
Cached pages pause while hidden: composables/use-route-active.js gives
useRouteActive / useActiveValue / useActiveEventListener, and the head
writer, the shortcut map, the scroll trackers, the ?q= watchers of ASN
Profile and IP Calculator, the User dialog triggers and the overlay
counter all act only for the page on screen. An overlay still open when
its page is left closes, as its portal lives outside the cached page.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013GbLTGMZ45MV78qd2tHoco
