Updating to v6.4.5-rc.5 and then v6.4.5 left the progress modal on
"Downloading update... 10%" even though the update finished in the
background. The status stream could go silent behind a proxy (Tailscale
Serve, nginx buffering) and the modal only advanced on stream events.
Backend: the update SSE endpoint now sends the current status on connect,
writes events through one ordered writer with an explicit flush, sends a
15s heartbeat and sets X-Accel-Buffering: no.
Frontend: a silence watchdog falls back to status polling, the restart
phase is entered only on real restart evidence (restarting status, the
server going away, or a version change) rather than a single failed poll,
and the page never auto-reloads on unconfirmed completion without a
pre-update version baseline to compare against.
courtmanr@gmail.com
119ac49d10