perf(lab): retain spatial scenes during replay

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

@@ -28,6 +28,8 @@ test("semantic evidence mask is GPU-colored, bounded, cancelled and object-conta
   assert.match(source, /Math\.min\(width \/ mask\.width, height \/ mask\.height\)/);
   assert.match(source, /decoded\.key !== expectedKey/);
   assert.match(source, /mask\?\.key === expectedKey/);
+  assert.match(source, /lastReadyMaskRef/);
+  assert.match(source, /data-state=\{failure \? "error" : exactMask \? "ready" : renderMask \? "stale" : "loading"\}/);
   assert.match(source, /recorded-evidence-semantic-mask-overlay__error/);
   assert.match(source, /role="alert"/);
 });
@@ -53,6 +55,9 @@ test("metric evidence keeps missing semantic assignments as context and exposes
   assert.match(source, /classId === null \? undefined : colorsByClassId\.get\(classId\)/);
   assert.match(source, /data-decision="semantic"/);
   assert.match(source, /recordedEvidenceSemanticCssColor/);
+  assert.match(source, /DynamicDrawUsage/);
+  assert.match(source, /classifiedMeshesRef/);
+  assert.match(source, /updatePointPositions/);
 });
 
 test("semantic point alignment follows the last qualified spatial increment", async () => {