- Add betterframe-expand-data systemd service: growpart + resize2fs on
BF_DATA (last partition) so it fills the full SD card on first boot.
Solves the "No space left on device" issue with OS update downloads.
- Change OS update staging dir from /var/tmp/betterframe to
/var/lib/betterframe/tmp (on BF_DATA partition, not rootfs).
- Wire firmware and OS update progress callbacks into the GTK overlay
banner — shows "OS Update v1.2.3: Downloading — 45%" etc.
- Add per-partition disk reporting in heartbeat (/, /boot/firmware,
/var/lib/betterframe) with total/used/free/percent.
- Display partition table on kiosk detail page in admin UI.
- PG + SQLite migrations for partitions_json column on kiosks.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>