fix(lab): restore canonical spatial replay

apps/control-station/test/m48ObjectCentricQuality.test.mjs

@@ -18,6 +18,7 @@ let nextM48ObjectId;
 let laboratoryMetricLegendEntries;
 let nearestLaboratoryRecordedClipFrame;
 let laboratoryRecordedClipEndExclusiveNs;
+let laboratoryRecordedClipClockGate;
 let m48SpatialPlaybackWindow;
 let trimM48SpatialPlaybackCache;
 let nextM48CameraVisibility;
@@ -45,6 +46,7 @@ before(async () => {
   ({
     nearestLaboratoryRecordedClipFrame,
     laboratoryRecordedClipEndExclusiveNs,
+    laboratoryRecordedClipClockGate,
   } = await server.ssrLoadModule(
     "/src/components/laboratory/LaboratoryRecordedClipPlayer.tsx",
   ));
@@ -342,6 +344,21 @@ test("shared recorded clip clock selects exact frames and one stable loop bounda
   assert.equal(laboratoryRecordedClipEndExclusiveNs(frames), 1_300_000_000);
 });
 
+test("shared recorded clip rejects stale media callbacks until an explicit seek lands", () => {
+  assert.deepEqual(laboratoryRecordedClipClockGate(1, 123), {
+    accept: false,
+    pendingSequence: 1,
+  });
+  assert.deepEqual(laboratoryRecordedClipClockGate(1, 1), {
+    accept: true,
+    pendingSequence: null,
+  });
+  assert.deepEqual(laboratoryRecordedClipClockGate(null, 124), {
+    accept: true,
+    pendingSequence: null,
+  });
+});
+
 test("M4.8 camera and spatial visibility are independent without an empty viewer", () => {
   assert.equal(nextM48CameraVisibility("camera", true), true);
   assert.equal(nextM48CameraVisibility("3d", true), false);

apps/control-station/test/recordedCameraBuffering.test.mjs

@@ -188,6 +188,9 @@ test("production replay derives bounded fragments and retains native range fallb
   assert.match(source, /requestedSegmentSequence = segmentSequence \?\?/);
   assert.match(source, /waitForRecordedVideoInitialFrame/);
   assert.match(source, /setSegmentRecoveryGeneration/);
+  assert.match(source, /resumePlaybackIfRequested/);
+  assert.match(source, /!playbackPlayingRef\.current/);
+  assert.match(source, /await video\.play\(\)/);
 
   assert.equal(recordedMediaDecodeStartSequence([1, 1491, 1501], 1500), 1491);
   assert.deepEqual(

apps/control-station/test/vegetationShadow.test.mjs

@@ -384,6 +384,10 @@ test("vegetation realtime LAB and archival benchmark use separate admitted instr
   assert.match(resultSource, /RAVNOVES004TREE mixed route review/);
   assert.match(resultSource, /RAVNOVES004TREE full recorded review/);
   assert.match(resultSource, /LaboratoryRecordedClipPlayer/);
+  assert.match(resultSource, /RerunViewport/);
+  assert.match(resultSource, /M48EvidenceModeRail/);
+  assert.match(resultSource, /planAvailable=\{false\}/);
+  assert.match(resultSource, /kind="recorded-replay"/);
   assert.match(resultSource, /className="m48-clip-player__overlay"/);
   assert.match(resultSource, /linkedTgsResultId/);
   assert.match(benchmarkSource, /M48MaskComparisonVisual/);