The router upgrade died at the installer's 120s ceiling while apk was
running tachyon-1.2.66.pre-upgrade, so apk rolled the transaction back
and the old build stayed installed.
prerm reached INIT_PATH status through rc.common, which waits on
flock -w 1000. A stuck start or retry_start_on_wan_up holding that lock
stalls the hook for up to a quarter of an hour. Every init call in the
hooks is now bounded, the status probe moved after the flock waiters are
killed, and the Makefile hook bounds the old version's cleanup from the
outside since that code cannot be trusted to bound itself.
The installer also called a rollback a success: a rebuilt tag keeps its
version, so both the presence and version checks still passed. It now
compares the commit SHA baked into the installed constants module and
fails loudly when it did not move. Package installs get 300s, since a
kill mid-transaction is what caused the rollback.
Dushnilin
f770316345