Decision for review 5411136378's "moved HEAD" item. tree_is_whole required
pm.venv_is_current at a moved HEAD and counted any exception as "not current".
The updater's early exits after the pull (wrong branch, channel sha mismatch)
reach the resume before the dependency sync, so they deferred; on a checkout
whose launches never sync dependencies (developer checkout, no install stamp,
lazy installs disabled, ZIP) or whose probe raises, the deferral never ended
and gateways stayed stopped where main restarted them.
Rule chosen (gateways never stay stopped after a committed update without an
owed follow-up that can succeed): defer only when the install is self-managed
(updateMechanism "self", the conditions venv_sync.prepare_launch syncs under),
because every later launch syncs dependencies before startup recovery runs, so
the owed record resumes on the next launch. Everywhere else, and when currency
cannot be established, resume now; the restarted gateway's own launch syncs or
prints the remedy.
Changed assertions: test_resume_waits_for_a_whole_tree pinned "dependencies"
deferral on a stamp-less checkout, which is the stranding this item reports; it
now expects a resume. test_an_adopted_baseline_never_replaces_this_runs_own
patches the renamed helper (_venv_is_current -> _deps_hold_resume).
e9803548f5