Review findings (Salt, NS-788):
B1: delivery_outcome classification, unresolved_origin, and incident
'alerted' marking all read the deliver lane while the notice itself was
routed through failure_deliver — a silenced failure recorded
delivery_outcome='delivered' and marked its incident alerted (corrupting
the 'failure seen' vs 'operator was pinged' distinction the incident
store documents), and a failure delivered via failure_deliver over an
unresolvable deliver=origin recorded 'not_configured'. New
_delivery_lane_value() helper feeds the SAME lane to routing and
bookkeeping at all five sites (both classifiers, both unresolved_origin
computations, both zero-target checks). Three regression tests assert
outcome + alerted-marking; verified to bite on the pre-fix classifier.
S1: failure_deliver now goes through _resolve_cron_context_deliver on
tool create/update, matching deliver — a job created from inside a cron
run can no longer store literal 'origin' in its failure lane.
S2/T1: corrected the false 'same helper' comment in create_job; the
str/list flatten mirrors the tool layer for direct callers.
Full cron suite + interrupt tests: 87 files, 1112 passed, 0 failed.