Boot from cold to root prompt was 2-3 min because Pi OS Trixie waits
on a handful of services that timeout instead of completing:
- systemd-networkd-wait-online (60s default)
- NetworkManager-wait-online (30s default)
- wpa_supplicant + dhcpcd5 (no usable interfaces)
- raspi-config / firstboot / userconfig (no point in QEMU)
The SD image was re-baked through scripts/configure-pi3-autologin.sh
with all of them masked (the script grew a `mask_unit` helper that
symlinks each unit to /dev/null inside the rootfs). Login prompt now
appears in ~30s wall.
New manifest version 2026-04-21+autologin+fastboot — same byte count
as the previous build (still 5.4 GiB raw) but a different SHA so the
sidecar-based cache invalidation forces every container to refetch.
4d4d4622ff