fixup: publication adds no operator, so the introspection goldens stand

The publisher sink showed up in `relations.slt` as an operator and a channel per
published index, and doubled the reported size of a one-record index in
`introspection-sources.td`. The trace wrapper adds neither, so both files return
to their expectations on main, and `relations.slt` no longer pins the runtime
flag.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VDm7opomJLxbNUEP3r9BLk

Author: antiguru

test/sqllogictest/introspection/relations.slt

@@ -19,14 +19,6 @@ CREATE TABLE test (a TEXT, b TEXT);
 statement ok
 INSERT INTO test VALUES('a', 'b');
 
-# The expected operators below include the publishers that maintenance installs on every
-# published index, so pin the flag rather than inheriting whatever the environment defaults
-# to. It is read when a replica is provisioned, so it must be set before the cluster below.
-simple conn=mz_system,user=mz_system
-ALTER SYSTEM SET enable_compute_interactive_runtime = true;
-----
-COMPLETE 0
-
 statement ok
 CREATE CLUSTER c1 REPLICAS (replica_a (SIZE 'scale=1,workers=1', INTROSPECTION INTERVAL '50 milliseconds', INTROSPECTION DEBUGGING));
 
@@ -72,9 +64,7 @@ FormArrangementKey  ArrangeBy[[Column(0,␠"a"),␠Column(1,␠"b")]]  mz_timely
 FormArrangementKey  Concatenate  alloc::vec::Vec<(mz_compute::render::errors::DataflowErrorSer,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
 InputRegion:␠materialize.public.test_primary_idx  BuildRegion:␠materialize.public.test_primary_idx  alloc::vec::Vec<(mz_compute::render::errors::DataflowErrorSer,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
 InputRegion:␠materialize.public.test_primary_idx  BuildRegion:␠materialize.public.test_primary_idx  alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
-InspectBatch  PublishShared(u2␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
 LimitProgress(Dataflow:␠materialize.public.test_primary_idx)  Probe  alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
-LogDataflowErrorsStream  PublishShared(u2␠errs)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::key_batch::OrdKeyBatch<mz_compute::typedefs::spines::MzStack<((mz_compute::render::errors::DataflowErrorSer,␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
 LogOperatorHydration␠(1)  FormArrangementKey  alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
 OkErr  SuppressEarlyProgress  alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
 SuppressEarlyProgress  LimitProgress(Dataflow:␠materialize.public.test_primary_idx)  alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
@@ -108,9 +98,9 @@ GROUP BY type;
 2  alloc::vec::Vec<mz_txn_wal::txn_read::DataRemapEntry<mz_repr::timestamp::Timestamp>>
 4  alloc::vec::Vec<(core::result::Result<mz_repr::row::Row,␠mz_compute::render::errors::DataflowErrorSer>,␠(mz_repr::timestamp::Timestamp,␠mz_storage_operators::persist_source::Subtime),␠mz_ore::overflowing::Overflowing<i64>)>
 5  alloc::vec::Vec<core::convert::Infallible>
+5  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::key_batch::OrdKeyBatch<mz_compute::typedefs::spines::MzStack<((mz_compute::render::errors::DataflowErrorSer,␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
 6  alloc::vec::Vec<(mz_compute::render::errors::DataflowErrorSer,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
-6  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::key_batch::OrdKeyBatch<mz_compute::typedefs::spines::MzStack<((mz_compute::render::errors::DataflowErrorSer,␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-7  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
+6  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
 9  alloc::vec::Vec<(mz_repr::row::Row,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
 
 query TTT rowsort
@@ -198,39 +188,6 @@ Differential␠Logging␠Demux  Consolidate␠Differential(BatcherSize)  alloc::
 Differential␠Logging␠Demux  Consolidate␠Differential(Sharing)  alloc::vec::Vec<((usize,␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
 FlatMapReachability  Consolidate␠Timely(Reachability)  mz_timely_util::columnar::Column<(((bool,␠usize,␠usize,␠usize,␠mz_repr::timestamp::Timestamp),␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
 PrometheusMetrics  Arrange␠PrometheusMetrics  mz_timely_util::columnar::Column<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
-PublishLog(si144115188075856385)  PublishShared(si144115188075856385␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856386)  PublishShared(si144115188075856386␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856387)  PublishShared(si144115188075856387␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856388)  PublishShared(si144115188075856388␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856389)  PublishShared(si144115188075856389␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856390)  PublishShared(si144115188075856390␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856391)  PublishShared(si144115188075856391␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856392)  PublishShared(si144115188075856392␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856393)  PublishShared(si144115188075856393␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856394)  PublishShared(si144115188075856394␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856395)  PublishShared(si144115188075856395␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856396)  PublishShared(si144115188075856396␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856397)  PublishShared(si144115188075856397␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856398)  PublishShared(si144115188075856398␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856399)  PublishShared(si144115188075856399␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856400)  PublishShared(si144115188075856400␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856401)  PublishShared(si144115188075856401␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856402)  PublishShared(si144115188075856402␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856403)  PublishShared(si144115188075856403␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856404)  PublishShared(si144115188075856404␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856405)  PublishShared(si144115188075856405␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856406)  PublishShared(si144115188075856406␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856407)  PublishShared(si144115188075856407␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856408)  PublishShared(si144115188075856408␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856409)  PublishShared(si144115188075856409␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856410)  PublishShared(si144115188075856410␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856412)  PublishShared(si144115188075856412␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856413)  PublishShared(si144115188075856413␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856414)  PublishShared(si144115188075856414␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856415)  PublishShared(si144115188075856415␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856416)  PublishShared(si144115188075856416␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856417)  PublishShared(si144115188075856417␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
-PublishLog(si144115188075856418)  PublishShared(si144115188075856418␠oks)  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
 Replay␠compute␠logs  Compute␠Logging␠Demux  mz_timely_util::columnar::Column<(core::time::Duration,␠mz_compute::logging::compute::ComputeEvent)>
 Replay␠differential␠logs  Differential␠Logging␠Demux  alloc::vec::Vec<(core::time::Duration,␠differential_dataflow::logging::DifferentialEvent)>
 Replay␠reachability␠logs  FlatMapReachability  mz_timely_util::columnar::Column<(core::time::Duration,␠(usize,␠alloc::vec::Vec<(usize,␠usize,␠bool,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>))>
@@ -290,9 +247,9 @@ GROUP BY type;
 1  mz_timely_util::columnar::Column<(core::time::Duration,␠(usize,␠alloc::vec::Vec<(usize,␠usize,␠bool,␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>))>
 1  mz_timely_util::columnar::Column<(core::time::Duration,␠mz_compute::logging::compute::ComputeEvent)>
 3  alloc::vec::Vec<(core::time::Duration,␠timely::logging::TimelyEvent)>
+33  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
 33  mz_timely_util::columnar::Column<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
 4  alloc::vec::Vec<((mz_compute::logging::timely::MessageDatum,␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
 4  alloc::vec::Vec<alloc::vec::Vec<mz_timely_util::columnation::ColumnationStack<((mz_compute::logging::timely::MessageDatum,␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>
-66  alloc::vec::Vec<mz_row_spine::arc_batch::ArcBatch<differential_dataflow::trace::implementations::ord_neu::val_batch::OrdValBatch<mz_row_spine::spines::RowRowLayout<((mz_repr::row::Row,␠mz_repr::row::Row),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>>
 8  alloc::vec::Vec<((usize,␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>
 8  alloc::vec::Vec<alloc::vec::Vec<mz_timely_util::columnation::ColumnationStack<((usize,␠()),␠mz_repr::timestamp::Timestamp,␠mz_ore::overflowing::Overflowing<i64>)>>>

test/testdrive/introspection-sources.td

@@ -265,9 +265,7 @@ true true
 
 > INSERT INTO t4 SELECT 1
 
-# Publishing an index into the arrangement-sharing registry doubles the reported size and
-# allocations of a one-record index, so the bound is 32 KiB rather than 16 KiB.
-> SELECT records, size < 32 * 1024, allocations > 0 FROM mz_introspection.mz_dataflow_arrangement_sizes WHERE name LIKE '%ii_t4'
+> SELECT records, size < 16 * 1024, allocations > 0 FROM mz_introspection.mz_dataflow_arrangement_sizes WHERE name LIKE '%ii_t4'
 1 true true
 
 > INSERT INTO t4 SELECT generate_series(1, 1000)