From 7400fe2fd73ca7667a974646ce58962622f7875d Mon Sep 17 00:00:00 2001
From: DCCONSTRUCTIONS <dcconstructions@MacBook-Pro-DCCONSTRUCTIONS-2.local>
Date: Mon, 24 Aug 2026 00:41:29 +0300
Subject: [PATCH] fix(lab): preserve explicit replay seeks

---
 .../laboratory/useRecordedEvidencePlayback.ts  |  7 +++++++
 .../test/m4ReplayThreat.test.mjs               | 18 +++++++++++++++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/apps/control-station/src/components/laboratory/useRecordedEvidencePlayback.ts b/apps/control-station/src/components/laboratory/useRecordedEvidencePlayback.ts
index 1ad45a0..859a49f 100644
--- a/apps/control-station/src/components/laboratory/useRecordedEvidencePlayback.ts
+++ b/apps/control-station/src/components/laboratory/useRecordedEvidencePlayback.ts
@@ -45,6 +45,13 @@ export function synchronizeRecordedEvidencePlayback(
   observed: RecordedObservationPlayback,
   range: RecordedEvidencePlaybackRange,
 ): RecordedObservationPlayback {
+  if (!current.playing) {
+    // A paused transport also covers every explicit operator seek. Native
+    // callbacks from the previously displayed frame remain stale until the
+    // controlled video effect has applied that target, so they cannot move the
+    // shared LAB clock at all while the operator state is paused.
+    return current;
+  }
   const currentSeconds = clampRecordedEvidenceSeconds(observed.currentSeconds, range);
   return {
     ...current,
diff --git a/apps/control-station/test/m4ReplayThreat.test.mjs b/apps/control-station/test/m4ReplayThreat.test.mjs
index 7128795..1cfb57c 100644
--- a/apps/control-station/test/m4ReplayThreat.test.mjs
+++ b/apps/control-station/test/m4ReplayThreat.test.mjs
@@ -403,7 +403,23 @@ test("recorded VIDEO clock cannot reverse an explicit operator pause", () => {
       { currentSeconds: 15.1, playing: true, rate: 1 },
       range,
     ),
-    { currentSeconds: 15.1, playing: false, rate: 2 },
+    { currentSeconds: 15, playing: false, rate: 2 },
+  );
+  assert.deepEqual(
+    synchronizeRecordedEvidencePlayback(
+      { currentSeconds: 10, playing: false, rate: 2 },
+      { currentSeconds: 15.1, playing: true, rate: 1 },
+      range,
+    ),
+    { currentSeconds: 10, playing: false, rate: 2 },
+  );
+  assert.deepEqual(
+    synchronizeRecordedEvidencePlayback(
+      { currentSeconds: 12, playing: true, rate: 2 },
+      { currentSeconds: 15.1, playing: true, rate: 1 },
+      range,
+    ),
+    { currentSeconds: 15.1, playing: true, rate: 2 },
   );
   assert.deepEqual(
     synchronizeRecordedEvidencePlayback(