Losing focus -- another tab, another window, another app -- now puts the
whole page behind a blur, so an app switcher's snapshot or a glance over
the shoulder gives nothing away. It comes back on focus, on the tab
becoming visible again, and on the first touch or key, which lands on the
veil rather than on a page nobody could see.
Painted as a backdrop filter on a fixed overlay above everything the app
can show: a filter on the page itself would make every fixed element
position against the wrong box.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MPZFnNdHbPGDTqQUNiE4ZN
1b38f9d9e7