chore(node): preserve pre-canonicalization experiment snapshot

Historical working copy retained for audit before consolidation into main. The canonicalized plugin architecture and later fixes already live in main; this snapshot is not a release or a request to restore obsolete source layout.

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

@@ -7,6 +7,7 @@ let server;
 let LABORATORY_RECORDED_EVIDENCE_VIEWER_PROFILE;
 let liveAcquisitionRerunProfile;
 let recordedSessionRerunProfile;
+let laboratoryResultRerunProfile;
 
 before(async () => {
   server = await createServer({
@@ -18,6 +19,7 @@ before(async () => {
     LABORATORY_RECORDED_EVIDENCE_VIEWER_PROFILE,
     liveAcquisitionRerunProfile,
     recordedSessionRerunProfile,
+    laboratoryResultRerunProfile,
   } = await server.ssrLoadModule("/src/core/observation/viewerProfile.ts"));
 });
 
@@ -86,3 +88,14 @@ test("the old LAB transport is fenced as explicit legacy comparison only", () =>
   });
   assert.equal(Object.isFrozen(LABORATORY_RECORDED_EVIDENCE_VIEWER_PROFILE), true);
 });
+
+test("LAB has its own immutable result identity and discriminator", () => {
+  const input = {resultId:"E38-result-1",sourceUrl:"/shared.rrd",kind:"recorded-session",clock:"stream_time"};
+  const lab = laboratoryResultRerunProfile(input);
+  assert.equal(lab.kind,"laboratory-result");
+  assert.equal(lab.clock,"session_time");
+  assert.equal(lab.resultId,"E38-result-1");
+  assert.equal(recordedSessionRerunProfile({...input}).kind,"recorded-session");
+  assert.equal(liveAcquisitionRerunProfile({...input}).kind,"live-acquisition");
+  assert.throws(()=>laboratoryResultRerunProfile({...input,resultId:"  "}));
+});