feat(ha-convergence-recovery): commit-gated scheduler egress — submit_lsn tagging + watermark gate (task 1.2)

src/controller/meson.build

@@ -3,6 +3,7 @@ controller_src = [
   'commit.c',
   'config_repl.c',
   'dataex.c',
+  'egress.c',
   'ha.c',
   'job.c',
   'join.c',
@@ -125,6 +126,7 @@ controller_unit_test_src = [
   'testsuite/test_egress_filter.c',
   'commit.c',
   'job.c',
+  'egress.c',
   'queue.c',
   'join.c',
   'opupd.c',