The updater wrote the status once per phase, so the minute-plus npm install and
build steps left the UI frozen on a single label. Add:
- a heartbeat in scripts/self-update.sh (run_step wrapper) that refreshes
update-status.json every ~3s during the install/build steps with the latest
output line; full output is still mirrored to the update log.
- a frontend (settings-ui.js) that, during non-terminal phases, shows the live
status message plus a ticking total-elapsed counter instead of only the static
phase label.
Takes effect when updating FROM a build that contains it — the detached runner
script (staged from scripts/self-update.sh) and the polling frontend are both
the from-version's copies.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
