QUALITY.

Start a session: the countdown begins at 03:00, the ghost follows the pointer, and clicks remain possible. Stop and restart. Change ghost personalities. Generate a link with sender and message, open it in another tab and verify automatic start. On touch devices, tap/drag to guide the ghost.

Test at 320px, 390px and desktop widths. Verify no horizontal scroll, square corners, and no JavaScript errors.

Timer ends after exactly 180 seconds of wall-clock time, even when the tab becomes hidden. Test with a shortened timer in browser development tools if needed.

V004 companion: Chrome/Edge extension has a shared three-minute deadline across ordinary tabs, including tabs already open at activation. Requires one-time installation. Browser/system UI is not supported.