fix(lab): запускать RAV004 с первого кадра

apps/control-station/src/core/observation/recordedRerunLifecycle.ts

@@ -196,6 +196,20 @@ export function isRecordedPlaybackFullyBuffered(
   return recordedPlaybackBufferState(rangeNs, expectedTimelineEndSeconds).fullyBuffered;
 }
 
+export function shouldReapplyRecordedBlueprint(
+  recordingOpened: boolean,
+  recordedSource: boolean,
+  hasBlueprint: boolean,
+  identity: { applicationId: string; recordingId: string } | null,
+  event: { application_id: string; recording_id: string },
+): boolean {
+  return recordingOpened
+    && recordedSource
+    && hasBlueprint
+    && identity?.applicationId === event.application_id
+    && identity.recordingId === event.recording_id;
+}
+
 export function attemptRecordedAutoplay(
   seekToStart: () => void,
   startPlaying: () => void,
@@ -209,6 +223,49 @@ export function attemptRecordedAutoplay(
   }
 }
 
+export function createRecordedInitialSeekGate(): {
+  attempt: (
+    viewerStarted: boolean,
+    fullyBuffered: boolean,
+    presentationReady: boolean,
+    rangeNs: { min: number; max: number } | null,
+    seekToStart: (startNs: number) => void,
+    preferredStartNs?: number,
+  ) => boolean;
+  attempted: () => boolean;
+} {
+  let consumed = false;
+  return {
+    attempt(
+      viewerStarted,
+      fullyBuffered,
+      presentationReady,
+      rangeNs,
+      seekToStart,
+      preferredStartNs,
+    ) {
+      if (
+        consumed
+        || !viewerStarted
+        || !fullyBuffered
+        || !presentationReady
+        || !isUsableRecordedPlaybackRange(rangeNs)
+      ) return false;
+      consumed = true;
+      const startNs = Number.isFinite(preferredStartNs)
+        ? Math.min(Math.max(preferredStartNs as number, rangeNs.min), rangeNs.max)
+        : rangeNs.min;
+      try {
+        seekToStart(startNs);
+        return true;
+      } catch {
+        return false;
+      }
+    },
+    attempted: () => consumed,
+  };
+}
+
 export function createRecordedAutoplayGate(): {
   attempt: (
     viewerStarted: boolean,