The only way to stop a screen share was toggling the share button again —
buried in the ⋮ More menu on mobile. Now a floating "You're sharing your
screen · Stop" banner appears at the top whenever you're sharing (driven by
meetScreen via updateScreenBtn), with a red Stop button that calls
toggleScreen. Works on iOS/desktop/web. Web-only.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>