Player remounts with the layout even though the video now doesn't. Its cleanup cleared the streamer's playback session, which changed the HLS URL and restarted hls.js, so usePlaybackSession now runs next to the video (inside the hosted subtree on web, in Fullscreen on native). The hosted subtree also needs the livestream and video stores (the webcam ingest reads the stream key from the livestream store), and a remounted ingest Player no longer resets a live connection's state to "new". The resize e2e now compares the video's src/srcObject rather than counting emptied events, and covers the streamer's own HLS playback.