[CI] (.github/workflows, docs/ci, scripts/ci): keep the split lane's fallback run when the lane step never ran

- 'Split lane fallback (lane step skipped)' runs the ownership check and the DirectGLES.Split. entries only when split-baseline.xml is missing, as the retired controls step did
- the integration-split header and junit_tally.py's docstring stop naming the retired controls

docs/ci/ci-cleanup-log.md

@@ -54,7 +54,7 @@ them wrong.
 | 2026-10-17 | `Magma split lane (strict, dual-block)` on the disaggregation branches when the dual-block step proved its defaults | Test / `integration-split-strict` | the dual-block census run covers the `integration-magma-split` label in the same environment | the dual-block census run |
 | 2026-10-17 | the 75 retrace-split inproc rows other than OpenRA's, when `build-linux-split` reuses `build-linux` | Test / `retrace-split` | the retrace job's inproc-acceptance rows replay the same cases on the same library, strict and with the dual block and run-ahead on; no one-sided pair since 10-05 | the inproc-acceptance rows, which now prove per leg from the client log that they run with strict=1, role-split-state=1 and run-ahead=1 (`MGTRACE_EXPECT_IPC`) and keep a refusal census; every remaining retrace-split leg proves its defaults (strict=0, role-split-state=1, run-ahead=1) and a changed default reds every leg with the rows to restore; `trace_cases.py --self-test-split-matrix` (disaggregation branches) proves every dropped row is an acceptance row; OpenRA's inproc rows stay for the wire evidence |
 | 2026-10-17 | `Transport resolution check`'s grep of one entry's log for the inproc resolution sentence | Test / `integration-split` | it checked one entry (`DirectGLES.Split.PersistentMapArm.`) after the fact | in-test: the split fixture (`Harness/ScenarioFixture.h`) now fails every armed Split/Spawn/Tcp entry whose process did not resolve the transport its registration claims, or whose server is not where the claim says (a thread here for inproc, a process of its own for spawn and tcp), from the running process (`SplitRuntimePeek`, `ClientSession::PeerServerPid()`); `SplitLaneHarness.TransportClaimRule` (unit) proves the rule red on canned inputs; the step keeps the IPC default proof as `Default-knob resolution check` |
-| 2026-10-18 | `Negative controls (barrier, map push)` (`scripts/ci/split_negative_controls.sh`; skip-census lane `junit-integration-split/control`) | Test / `integration-split` | it reran the split entries with `MOBILEGL_IPC_VERB_BARRIER=0` and `MOBILEGL_IPC_PERSISTENT_BLOCK_KB=0`, two product knobs that exist only for it; what was left without them (the ownership check and the baseline tally) repeats `SplitLogPaths.PrivateAndDistinct` and the lane step's own `junit_tally.py --require-split-ran` | E1: `RemoteWaitBoundaryControl.AnUnwaitedPublishIsSeenAsNoWait` (unit, always on); E3(a): `PersistentCoherentMapScenario.ThePushIsTheOnlyRouteAWriteTakesToTheServer`, always on in the split-arm entries (DirectGLES inproc, spawn, tcp and small ring; Magma's in the informational tier), within one frame and across a Present. Narrower than the control: it takes the push away with `PersistentMapTracker::Forget`, which also drops the membership (only the push reads it today), and draws its own frames, so it no longer shows that the bodies of `TwoWrites...` and `AWriteAfter...` make no announcing call |
+| 2026-10-18 | `Negative controls (barrier, map push)` (`scripts/ci/split_negative_controls.sh`; skip-census lane `junit-integration-split/control`) | Test / `integration-split` | it reran the split entries with `MOBILEGL_IPC_VERB_BARRIER=0` and `MOBILEGL_IPC_PERSISTENT_BLOCK_KB=0`, two product knobs that exist only for it; of what was left without them, the ownership check and the baseline tally repeat `SplitLogPaths.PrivateAndDistinct` and the lane step's own `junit_tally.py --require-split-ran`, and the `DirectGLES.Split.` rerun for a job whose lane step never ran stays as the step `Split lane fallback (lane step skipped)` | E1: `RemoteWaitBoundaryControl.AnUnwaitedPublishIsSeenAsNoWait` (unit, always on); E3(a): `PersistentCoherentMapScenario.ThePushIsTheOnlyRouteAWriteTakesToTheServer`, always on in the split-arm entries (DirectGLES inproc, spawn, tcp and small ring; Magma's in the informational tier), within one frame and across a Present. Narrower than the control: it takes the push away with `PersistentMapTracker::Forget`, which also drops the membership (only the push reads it today), and draws its own frames, so it no longer shows that the bodies of `TwoWrites...` and `AWriteAfter...` make no announcing call |
 | 2026-10-18 | `scripts/ci/wait_boundary_negative_control.py` | Test / `integration-split` | E1's body inside the step above: the three boundary cases rerun with the barrier off | `RemoteWaitBoundaryControl.AnUnwaitedPublishIsSeenAsNoWait`: the same ApplierReset published with no wait must read parked=0, the observation the owed waits read as parked=1 |
 | 2026-10-18 | `scripts/ci/control_smoke_test.sh`, `scripts/ci/testdata/stub_ctest.sh`, `scripts/ci/testdata/split_private_log_smoke.sh`, and the `reset` / `results` / `assertion` / `evidence` modes of `split_log_paths.py` | Test / pipe-gates (R-16) | smoke cases and helpers of the step above only | none needed |
 | 2026-10-18 | unit `RemoteRunAhead.ClearingTheVerbBarrierDisarmsRunAheadEvenWithTheCapBit`, and the `MOBILEGL_IPC_VERB_BARRIER` knob with its arm in the shipped client (`ClientSession`: the free-running `EmitAndWaitTails` return, the run-ahead latch term, the `gPipeInputs` guard's early return, the `verb-barrier=` field of the `Config: IPC` line) | Test / unit (split); product code | `0` was never a product mode, only E1's negative control, retired above; the unit case pinned that the control also disarmed run-ahead | `RemoteWaitBoundaryControl.AnUnwaitedPublishIsSeenAsNoWait`; `MOBILEGL_IPC_RUN_AHEAD=0` stays the lockstep A/B arm |