test(ha-commit-barrier-rollout): receipt-ACK verdict pins (task 3.3)

4 green pins: handle_jobdispatch replies receipt-only with zero WAL
appends through a real 2-alloc dispatch cycle (notify outcomes intact,
reply-precedes-processing); set/clr_preason and do_update_op rusage
stay receipt-style with RETAIN-pending fact appends ACK-committed.
Umbrella Reply-Ordering Contract cited per pin. DISCOVERY bug-451
(reviewer-verified): RUSAGE hook va_list type confusion — 4-byte OOB
read + garbage state in WAL_JOB_RUSAGE payloads; fix deferred to 7.1.
Census 488; zero failures.

src/controller/meson.build

@@ -127,6 +127,7 @@ controller_unit_test_src = [
   'job.c',
   'queue.c',
   'join.c',
+  'opupd.c',
   'startup_validation.c',
   'worker.c',
   'persist.c',