diff --git a/apps/control-station/src/components/RerunViewport.tsx b/apps/control-station/src/components/RerunViewport.tsx
index e6b104c..4ef957d 100644
--- a/apps/control-station/src/components/RerunViewport.tsx
+++ b/apps/control-station/src/components/RerunViewport.tsx
@@ -5,6 +5,20 @@ import type { RecordedAdmissionPhase } from "../core/observation/recordedSession
 
 export type RerunViewportStatus = "idle" | "loading" | "ready" | "error";
 export type RecordedRerunView = "spatial" | "perception" | "perception3d" | "metrics";
+export type RecordedPerceptionLoadPhase =
+  | "idle"
+  | "loading"
+  | "ready"
+  | "unavailable"
+  | "error";
+
+export interface RecordedPerceptionLoadState {
+  phase: RecordedPerceptionLoadPhase;
+  receivedBytes: number;
+  totalBytes: number | null;
+  progress: number | null;
+  message: string;
+}
 
 export interface RecordedPerceptionLayers {
   enabled: boolean;
@@ -67,7 +81,9 @@ export interface RerunViewportProps {
   recordedView?: RecordedRerunView;
   recordedViewResetGeneration?: 0 | 1;
   recordedPerceptionLayers?: RecordedPerceptionLayers;
-  onPerceptionAvailabilityChange?: (available: boolean) => void;
+  recordedPerceptionRetryGeneration?: number;
+  lockPerceptionCameraInteraction?: boolean;
+  onPerceptionLoadChange?: (state: RecordedPerceptionLoadState) => void;
 }
 
 export interface RecordedRrdArtifactDescriptor {
@@ -566,10 +582,12 @@ export async function fetchRecordedPerceptionRrd(
     origin,
     signal,
     fetcher = globalThis.fetch,
+    onProgress,
   }: {
     origin: string;
     signal?: AbortSignal;
     fetcher?: typeof globalThis.fetch;
+    onProgress?: (receivedBytes: number, totalBytes: number) => void;
   },
 ): Promise<Uint8Array | null> {
   const base = new URL(origin);
@@ -609,9 +627,32 @@ export async function fetchRecordedPerceptionRrd(
   ) {
     throw new Error("Invalid recorded perception response");
   }
-  const payload = new Uint8Array(await response.arrayBuffer());
+  const payload = new Uint8Array(declaredLength);
+  let receivedBytes = 0;
+  onProgress?.(receivedBytes, declaredLength);
+  if (response.body) {
+    const reader = response.body.getReader();
+    while (true) {
+      const { done, value } = await reader.read();
+      if (done) break;
+      if (receivedBytes + value.byteLength > declaredLength) {
+        await reader.cancel();
+        throw new Error("Recorded perception response exceeds its declared length");
+      }
+      payload.set(value, receivedBytes);
+      receivedBytes += value.byteLength;
+      onProgress?.(receivedBytes, declaredLength);
+    }
+  } else {
+    const fallback = new Uint8Array(await response.arrayBuffer());
+    if (fallback.byteLength <= declaredLength) {
+      payload.set(fallback);
+      receivedBytes = fallback.byteLength;
+      onProgress?.(receivedBytes, declaredLength);
+    }
+  }
   if (
-    payload.byteLength !== declaredLength ||
+    receivedBytes !== declaredLength ||
     payload[0] !== 0x52 ||
     payload[1] !== 0x52 ||
     payload[2] !== 0x46 ||
@@ -644,7 +685,9 @@ export function RerunViewport({
     segmentation: false,
     cuboids3d: false,
   },
-  onPerceptionAvailabilityChange,
+  recordedPerceptionRetryGeneration = 0,
+  lockPerceptionCameraInteraction = false,
+  onPerceptionLoadChange,
 }: RerunViewportProps) {
   const hostRef = useRef<HTMLDivElement>(null);
   const [status, setStatus] = useState<RerunViewportStatus>(sourceUrl ? "loading" : "idle");
@@ -1189,7 +1232,7 @@ export function RerunViewport({
   }, [recordedPerceptionUrl]);
 
   useEffect(() => {
-    if (!recordedPerceptionUrl || !recordedPerceptionLayers.enabled) return;
+    if (!recordedPerceptionUrl) return;
     const active = perceptionChannelRef.current;
     const identity = recordedIdentityRef.current;
     if (
@@ -1199,16 +1242,51 @@ export function RerunViewport({
       !active.channel.ready
     ) return;
     if (loadedPerceptionChannelRef.current === active) {
-      onPerceptionAvailabilityChange?.(true);
+      onPerceptionLoadChange?.({
+        phase: "ready",
+        receivedBytes: 0,
+        totalBytes: null,
+        progress: 1,
+        message: "AI-слои готовы.",
+      });
       return;
     }
     const abort = new AbortController();
+    let lastReportedPercent = -1;
+    onPerceptionLoadChange?.({
+      phase: "loading",
+      receivedBytes: 0,
+      totalBytes: null,
+      progress: null,
+      message: "Сервер готовит AI-слои.",
+    });
     void fetchRecordedPerceptionRrd(recordedPerceptionUrl, identity, {
       origin: window.location.origin,
       signal: abort.signal,
+      onProgress: (receivedBytes, totalBytes) => {
+        const progress = totalBytes > 0 ? receivedBytes / totalBytes : null;
+        const percent = progress === null ? -1 : Math.floor(progress * 100);
+        if (percent === lastReportedPercent && receivedBytes !== totalBytes) return;
+        lastReportedPercent = percent;
+        onPerceptionLoadChange?.({
+          phase: "loading",
+          receivedBytes,
+          totalBytes,
+          progress,
+          message: progress === null
+            ? "Загружаем AI-слои."
+            : `Загружаем AI-слои · ${Math.round(progress * 100)}%`,
+        });
+      },
     }).then((payload) => {
       if (payload === null) {
-        onPerceptionAvailabilityChange?.(false);
+        onPerceptionLoadChange?.({
+          phase: "unavailable",
+          receivedBytes: 0,
+          totalBytes: null,
+          progress: null,
+          message: "Для этой сессии AI-слои не опубликованы.",
+        });
         return;
       }
       if (
@@ -1221,16 +1299,31 @@ export function RerunViewport({
       }
       active.channel.send_rrd(payload);
       loadedPerceptionChannelRef.current = active;
-      onPerceptionAvailabilityChange?.(true);
-    }).catch(() => {
-      onPerceptionAvailabilityChange?.(false);
+      onPerceptionLoadChange?.({
+        phase: "ready",
+        receivedBytes: payload.byteLength,
+        totalBytes: payload.byteLength,
+        progress: 1,
+        message: "AI-слои готовы.",
+      });
+    }).catch((error: unknown) => {
+      if (abort.signal.aborted) return;
+      onPerceptionLoadChange?.({
+        phase: "error",
+        receivedBytes: 0,
+        totalBytes: null,
+        progress: null,
+        message: error instanceof Error
+          ? "AI-слои не загрузились. Можно повторить."
+          : "AI-слои недоступны.",
+      });
       // The base recording remains available when no admitted perception layer exists.
     });
     return () => abort.abort();
   }, [
-    onPerceptionAvailabilityChange,
+    onPerceptionLoadChange,
     perceptionChannelRevision,
-    recordedPerceptionLayers.enabled,
+    recordedPerceptionRetryGeneration,
     recordedPerceptionUrl,
   ]);
 
@@ -1292,6 +1385,13 @@ export function RerunViewport({
         className="rerun-viewport__canvas"
         data-presented={recordedArtifact === null || presentationStatus === "ready" ? "true" : "false"}
       />
+      {lockPerceptionCameraInteraction && presentationStatus === "ready" ? (
+        <div
+          className="rerun-viewport__camera-lock"
+          aria-hidden="true"
+          title="Операторское видео зафиксировано"
+        />
+      ) : null}
       {presentationStatus === "loading" ? (
         <div className="rerun-viewport__notice" role="status">
           <span className="busy-indicator" aria-hidden="true" />
diff --git a/apps/control-station/src/styles/spatial.css b/apps/control-station/src/styles/spatial.css
index e0fb96c..a0ff329 100644
--- a/apps/control-station/src/styles/spatial.css
+++ b/apps/control-station/src/styles/spatial.css
@@ -39,6 +39,39 @@
   border-radius: 999px;
 }
 
+.spatial-toolbar__perception-status,
+.spatial-toolbar__perception-retry {
+  display: inline-flex;
+  min-width: 0;
+  align-items: center;
+  gap: 0.4rem;
+  border: 1px solid rgb(255 255 255 / 0.07);
+  border-radius: 999px;
+  background: rgb(255 255 255 / 0.035);
+  padding: 0.42rem 0.62rem;
+  color: var(--nodedc-text-muted);
+  font: inherit;
+  font-size: 0.58rem;
+  white-space: nowrap;
+}
+
+.spatial-toolbar__perception-status .busy-indicator {
+  width: 0.72rem;
+  height: 0.72rem;
+  flex-basis: 0.72rem;
+}
+
+.spatial-toolbar__perception-retry {
+  color: var(--nodedc-text-primary);
+  cursor: pointer;
+}
+
+.spatial-toolbar__perception-retry:hover,
+.spatial-toolbar__perception-retry:focus-visible {
+  background: rgb(255 255 255 / 0.09);
+  outline: none;
+}
+
 .spatial-viewport-shell {
   position: relative;
   min-width: 0;
@@ -95,6 +128,17 @@
   height: 100% !important;
 }
 
+.rerun-viewport__camera-lock {
+  position: absolute;
+  z-index: 2;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  width: calc(46% - 2px);
+  cursor: default;
+  touch-action: none;
+}
+
 .rerun-viewport:is([data-status="loading"], [data-status="error"])
   .rerun-viewport__canvas {
   visibility: hidden;
diff --git a/apps/control-station/src/workspaces/Workspaces.tsx b/apps/control-station/src/workspaces/Workspaces.tsx
index 78454f3..90fc358 100644
--- a/apps/control-station/src/workspaces/Workspaces.tsx
+++ b/apps/control-station/src/workspaces/Workspaces.tsx
@@ -45,6 +45,7 @@ import {
   type RerunPlaybackState,
   type RerunSelection,
   type RerunViewportStatus,
+  type RecordedPerceptionLoadState,
 } from "../components/RerunViewport";
 import {
   capabilityStatusLabel,
@@ -307,9 +308,14 @@ function SpatialWorkspace({
   const [playbackState, setPlaybackState] = useState<RerunPlaybackState | null>(null);
   const [playbackController, setPlaybackController] = useState<RerunPlaybackController | null>(null);
   const [recordedViewResetGeneration, setRecordedViewResetGeneration] = useState<0 | 1>(0);
-  const [perceptionAvailability, setPerceptionAvailability] = useState<
-    "unknown" | "available" | "unavailable"
-  >("unknown");
+  const [perceptionLoad, setPerceptionLoad] = useState<RecordedPerceptionLoadState>({
+    phase: "idle",
+    receivedBytes: 0,
+    totalBytes: null,
+    progress: null,
+    message: "",
+  });
+  const [perceptionRetryGeneration, setPerceptionRetryGeneration] = useState(0);
   const [showDetections2d, setShowDetections2d] = useState(false);
   const [showSegmentation, setShowSegmentation] = useState(false);
   const [showCuboids3d, setShowCuboids3d] = useState(false);
@@ -335,7 +341,9 @@ function SpatialWorkspace({
   const mediaSources = observationSources.filter(
     (source) => source.capabilities.overlay && source.modality !== "point-cloud",
   );
-  const recordedPerceptionSupported = recordedSource && perceptionAvailability !== "unavailable";
+  const recordedPerceptionSupported =
+    recordedSource && perceptionLoad.phase !== "unavailable";
+  const recordedPerceptionReady = recordedSource && perceptionLoad.phase === "ready";
   const recordedPerceptionEnabled =
     showDetections2d || showSegmentation || showCuboids3d;
   // The native recorded camera remains the authoritative original. Only 2D
@@ -421,9 +429,9 @@ function SpatialWorkspace({
     (next: RerunPlaybackController | null) => setPlaybackController(next),
     [],
   );
-  const onPerceptionAvailabilityChange = useCallback((available: boolean) => {
-    setPerceptionAvailability(available ? "available" : "unavailable");
-    if (!available) {
+  const onPerceptionLoadChange = useCallback((next: RecordedPerceptionLoadState) => {
+    setPerceptionLoad(next);
+    if (next.phase === "unavailable" || next.phase === "error") {
       setShowDetections2d(false);
       setShowSegmentation(false);
       setShowCuboids3d(false);
@@ -431,12 +439,19 @@ function SpatialWorkspace({
   }, []);
 
   useEffect(() => {
-    setPerceptionAvailability("unknown");
+    setPerceptionLoad({
+      phase: recordedSource ? "loading" : "idle",
+      receivedBytes: 0,
+      totalBytes: null,
+      progress: null,
+      message: recordedSource ? "Ожидаем канал AI-слоёв." : "",
+    });
+    setPerceptionRetryGeneration(0);
     setShowDetections2d(false);
     setShowSegmentation(false);
     setShowCuboids3d(false);
     setRecordedViewResetGeneration(0);
-  }, [sourceUrl]);
+  }, [recordedSource, sourceUrl]);
 
   useEffect(() => {
     if (pointCloudVisible && sourceUrl.trim()) return;
@@ -445,7 +460,13 @@ function SpatialWorkspace({
     setSelection(null);
     setPlaybackState(null);
     setPlaybackController(null);
-    setPerceptionAvailability("unknown");
+    setPerceptionLoad({
+      phase: "idle",
+      receivedBytes: 0,
+      totalBytes: null,
+      progress: null,
+      message: "",
+    });
     setShowDetections2d(false);
     setShowSegmentation(false);
     setShowCuboids3d(false);
@@ -507,6 +528,7 @@ function SpatialWorkspace({
                 variant={detections2dActive ? "primary" : "secondary"}
                 icon={<Icon name="target" />}
                 aria-pressed={detections2dActive}
+                disabled={recordedSource && !recordedPerceptionReady}
                 onClick={() => recordedSource
                   ? setShowDetections2d((current) => !current)
                   : onLivePerceptionLayersChange({
@@ -521,6 +543,7 @@ function SpatialWorkspace({
                 variant={segmentationActive ? "primary" : "secondary"}
                 icon={<Icon name="image" />}
                 aria-pressed={segmentationActive}
+                disabled={recordedSource && !recordedPerceptionReady}
                 onClick={() => recordedSource
                   ? setShowSegmentation((current) => !current)
                   : onLivePerceptionLayersChange({
@@ -535,6 +558,7 @@ function SpatialWorkspace({
                 variant={cuboids3dActive ? "primary" : "secondary"}
                 icon={<Icon name="apps" />}
                 aria-pressed={cuboids3dActive}
+                disabled={recordedSource && !recordedPerceptionReady}
                 onClick={() => recordedSource
                   ? setShowCuboids3d((current) => !current)
                   : onLivePerceptionLayersChange({
@@ -546,6 +570,22 @@ function SpatialWorkspace({
               </Button>
             </div>
           ) : null}
+          {recordedSource && perceptionLoad.phase === "loading" ? (
+            <div className="spatial-toolbar__perception-status" role="status">
+              <span className="busy-indicator" aria-hidden="true" />
+              <span>{perceptionLoad.message || "Готовим AI-слои."}</span>
+            </div>
+          ) : null}
+          {recordedSource && perceptionLoad.phase === "error" ? (
+            <button
+              type="button"
+              className="spatial-toolbar__perception-retry"
+              onClick={() => setPerceptionRetryGeneration((generation) => generation + 1)}
+            >
+              <Icon name="refresh" size={14} />
+              Повторить AI
+            </button>
+          ) : null}
           {recordedSource && presentedViewerStatus === "ready" ? (
             <Button
               size="compact"
@@ -591,12 +631,17 @@ function SpatialWorkspace({
               sceneSettings={sceneSettings}
               recordedViewResetGeneration={recordedViewResetGeneration}
               recordedPerceptionLayers={{
-                enabled: recordedPerceptionSupported && recordedPerceptionEnabled,
+                enabled:
+                  recordedPerceptionSupported &&
+                  recordedPerceptionReady &&
+                  recordedPerceptionEnabled,
                 detections2d: showDetections2d,
                 segmentation: showSegmentation,
                 cuboids3d: showCuboids3d,
               }}
-              onPerceptionAvailabilityChange={onPerceptionAvailabilityChange}
+              recordedPerceptionRetryGeneration={perceptionRetryGeneration}
+              lockPerceptionCameraInteraction={unifiedPerception}
+              onPerceptionLoadChange={onPerceptionLoadChange}
               onStatusChange={onStatusChange}
               onSelectionChange={onSelectionChange}
               onPlaybackChange={onPlaybackChange}
diff --git a/apps/control-station/test/observationSources.test.mjs b/apps/control-station/test/observationSources.test.mjs
index a01165d..a8f27e2 100644
--- a/apps/control-station/test/observationSources.test.mjs
+++ b/apps/control-station/test/observationSources.test.mjs
@@ -375,11 +375,15 @@ test("recorded perception fetch admits one complete same-origin RRD or no layer"
     "http://127.0.0.1:5174/api/v1/observation-sessions/session-1/perception.rrd",
   );
   const payload = Uint8Array.from([0x52, 0x52, 0x46, 0x32, 0x01]);
+  const progress = [];
   const result = await fetchRecordedPerceptionRrd(
     endpoint,
     { applicationId: "nodedc_mission_core_recorded", recordingId: "recording-001" },
     {
       origin: "http://127.0.0.1:5174",
+      onProgress: (receivedBytes, totalBytes) => {
+        progress.push([receivedBytes, totalBytes]);
+      },
       fetcher: async (_input, init) => {
         assert.deepEqual(JSON.parse(String(init.body)), {
           application_id: "nodedc_mission_core_recorded",
@@ -396,6 +400,8 @@ test("recorded perception fetch admits one complete same-origin RRD or no layer"
     },
   );
   assert.deepEqual([...result], [...payload]);
+  assert.deepEqual(progress[0], [0, payload.byteLength]);
+  assert.deepEqual(progress.at(-1), [payload.byteLength, payload.byteLength]);
 
   const absent = await fetchRecordedPerceptionRrd(
     endpoint,
diff --git a/src/k1link/compute/integrated_perception.py b/src/k1link/compute/integrated_perception.py
index 6a08807..8756663 100644
--- a/src/k1link/compute/integrated_perception.py
+++ b/src/k1link/compute/integrated_perception.py
@@ -105,16 +105,10 @@ class _CuboidPresentationState:
         colors: np.ndarray,
     ) -> tuple[np.ndarray, np.ndarray, np.ndarray, np.ndarray, list[str]] | None:
         accepted = [
-            item
-            for item in objects
-            if str(item.get("cuboid_status", "")).startswith("accepted-")
+            item for item in objects if str(item.get("cuboid_status", "")).startswith("accepted-")
         ]
         if not (
-            len(accepted)
-            == len(centers)
-            == len(half_sizes)
-            == len(quaternions)
-            == len(colors)
+            len(accepted) == len(centers) == len(half_sizes) == len(quaternions) == len(colors)
         ):
             raise RecordedPerceptionOverlayError(
                 "integrated perception cuboid presentation arrays are inconsistent"
@@ -343,6 +337,8 @@ class IntegratedPerceptionOverlayStore:
         self.cache_root = cache_root.expanduser().absolute()
         self.ffmpeg_path = ffmpeg_path.expanduser().absolute()
         self._lock = threading.Lock()
+        self._catalog_signature: tuple[Any, ...] | None = None
+        self._latest_by_session: dict[str, IntegratedPerceptionResult | None] = {}
 
     def render(
         self,
@@ -402,10 +398,21 @@ class IntegratedPerceptionOverlayStore:
             return payload
 
     def _latest(self, session_id: str) -> IntegratedPerceptionResult | None:
+        signature = _directory_catalog_signature(
+            self.jobs_root,
+            self.results_root,
+            self.lidar_packs_root,
+        )
+        if signature != self._catalog_signature:
+            self._catalog_signature = signature
+            self._latest_by_session.clear()
+        if session_id in self._latest_by_session:
+            return self._latest_by_session[session_id]
         try:
             jobs = sorted(self.jobs_root.iterdir())
             candidates = sorted(self.results_root.iterdir())
         except FileNotFoundError:
+            self._latest_by_session[session_id] = None
             return None
         if len(jobs) > MAX_SCAN or len(candidates) > MAX_SCAN:
             raise RecordedPerceptionOverlayError("integrated perception catalog is outside bounds")
@@ -436,8 +443,57 @@ class IntegratedPerceptionOverlayStore:
                 ):
                     matches.append(value)
         if not matches:
+            self._latest_by_session[session_id] = None
             return None
-        return max(matches, key=lambda value: (value.created_at_utc, value.result_id))
+        latest = max(matches, key=lambda value: (value.created_at_utc, value.result_id))
+        self._latest_by_session[session_id] = latest
+        return latest
+
+
+def _directory_catalog_signature(*roots: Path) -> tuple[Any, ...]:
+    """Track immutable lab catalogs without rehashing every large artifact per request.
+
+    Accepted result directories are append-only. Their directory mtimes still
+    change when an atomic manifest replacement occurs, while a new experiment
+    changes the parent listing. This cheap signature therefore invalidates the
+    process-local validation memo without weakening the first full integrity
+    validation of every catalog generation.
+    """
+
+    signature: list[Any] = []
+    for root in roots:
+        try:
+            root_stat = root.stat()
+            entries = sorted(root.iterdir(), key=lambda path: path.name)
+        except FileNotFoundError:
+            signature.append((str(root), None))
+            continue
+        if len(entries) > MAX_SCAN:
+            raise RecordedPerceptionOverlayError("integrated perception catalog is outside bounds")
+        entry_signature = []
+        for entry in entries:
+            try:
+                metadata = entry.lstat()
+            except FileNotFoundError:
+                # A concurrent atomic publication will alter the parent mtime
+                # and be observed on the next request.
+                continue
+            entry_signature.append(
+                (
+                    entry.name,
+                    metadata.st_mode,
+                    metadata.st_size,
+                    metadata.st_mtime_ns,
+                )
+            )
+        signature.append(
+            (
+                str(root),
+                root_stat.st_mtime_ns,
+                tuple(entry_signature),
+            )
+        )
+    return tuple(signature)
 
 
 def _render(
@@ -630,9 +686,7 @@ def _camera_proxy_file(
     os.close(descriptor)
     path = Path(name)
     path.unlink(missing_ok=True)
-    frame_filter = (
-        f"select=between(n\\,{start_frame_index}\\,{end_frame_index}),setpts=N/(10*TB)"
-    )
+    frame_filter = f"select=between(n\\,{start_frame_index}\\,{end_frame_index}),setpts=N/(10*TB)"
     try:
         completed = subprocess.run(
             [
@@ -900,9 +954,7 @@ def _canonical_json(value: object) -> bytes:
 
 def _finite(value: object) -> TypeGuard[int | float]:
     return (
-        isinstance(value, int | float)
-        and not isinstance(value, bool)
-        and bool(np.isfinite(value))
+        isinstance(value, int | float) and not isinstance(value, bool) and bool(np.isfinite(value))
     )
 
 
diff --git a/tests/test_e10_integrated_perception.py b/tests/test_e10_integrated_perception.py
index 95b7c5a..9204563 100644
--- a/tests/test_e10_integrated_perception.py
+++ b/tests/test_e10_integrated_perception.py
@@ -3,10 +3,16 @@ from __future__ import annotations
 import importlib.util
 import sys
 from pathlib import Path
+from types import SimpleNamespace
 
 import numpy as np
+import pytest
 
-from k1link.compute.integrated_perception import _CuboidPresentationState
+import k1link.compute.integrated_perception as integrated_module
+from k1link.compute.integrated_perception import (
+    IntegratedPerceptionOverlayStore,
+    _CuboidPresentationState,
+)
 
 
 def _worker_modules() -> tuple[object, object]:
@@ -35,6 +41,60 @@ def _worker_modules() -> tuple[object, object]:
         sys.path.pop(0)
 
 
+def test_integrated_overlay_catalog_validation_is_memoized_until_publication(
+    tmp_path: Path,
+    monkeypatch: pytest.MonkeyPatch,
+) -> None:
+    jobs_root = tmp_path / "jobs"
+    results_root = tmp_path / "results"
+    lidar_packs_root = tmp_path / "lidar-packs"
+    cache_root = tmp_path / "cache"
+    for root in (jobs_root, results_root, lidar_packs_root):
+        root.mkdir()
+    job_root = jobs_root / "job-1"
+    job_root.mkdir()
+    first_result = results_root / f"e10-integrated-perception-{'a' * 64}"
+    first_result.mkdir()
+
+    validation_calls = {"job": 0, "result": 0}
+    job = SimpleNamespace(session_id="session-1")
+
+    def validate_job(_root: Path) -> object:
+        validation_calls["job"] += 1
+        return job
+
+    def validate_result(_job_root: Path, candidate: Path, _packs: Path) -> object:
+        validation_calls["result"] += 1
+        return SimpleNamespace(
+            accepted=True,
+            publication_scope="recorded-integrated-realtime-qualification-only",
+            created_at_utc=candidate.name,
+            result_id=candidate.name,
+        )
+
+    monkeypatch.setattr(integrated_module, "validate_camera_compute_job", validate_job)
+    monkeypatch.setattr(
+        integrated_module,
+        "validate_integrated_perception_result",
+        validate_result,
+    )
+    store = IntegratedPerceptionOverlayStore(
+        jobs_root=jobs_root,
+        results_root=results_root,
+        lidar_packs_root=lidar_packs_root,
+        cache_root=cache_root,
+        ffmpeg_path=tmp_path / "ffmpeg",
+    )
+
+    assert store._latest("session-1") is not None
+    assert store._latest("session-1") is not None
+    assert validation_calls == {"job": 1, "result": 1}
+
+    (results_root / f"e10-integrated-perception-{'b' * 64}").mkdir()
+    assert store._latest("session-1") is not None
+    assert validation_calls == {"job": 2, "result": 3}
+
+
 def test_e10_profile_pins_integrated_realtime_budget() -> None:
     _fusion, runner = _worker_modules()
     profile_path = (