HyperFrames v0.9.4

HyperFrames v0.9.4 changed how snapshot handles unreadable video: it now fails when a video frame on screen can't be read, instead of finishing with black or stale videos.

The same release has two smaller fixes. In the core renderer, iPhone Safari now keeps one connection per file for the take on screen and the next. In Studio, an undo that drops the keyframes now clears a leftover transform the preview was still showing. The CLI's exit-time telemetry also stays silent when the temp folder can't be written.