diff --git a/apps/control-station/src/components/laboratory/LaboratoryMetricEvidenceScene.tsx b/apps/control-station/src/components/laboratory/LaboratoryMetricEvidenceScene.tsx
new file mode 100644
index 0000000..a352cd1
--- /dev/null
+++ b/apps/control-station/src/components/laboratory/LaboratoryMetricEvidenceScene.tsx
@@ -0,0 +1,334 @@
+import { useEffect, useRef, useState } from "react";
+import { Button, Icon } from "@nodedc/ui-react";
+import * as THREE from "three";
+import { OrbitControls } from "three/addons/controls/OrbitControls.js";
+
+export type LaboratoryMetricPoint3 = readonly [number, number, number];
+export type LaboratoryMetricDecision = "threat" | "not-threat" | "unknown";
+export type LaboratoryMetricSceneMode = "3d" | "plan";
+
+export interface LaboratoryMetricObstacleVisual {
+  id: string;
+  decision: LaboratoryMetricDecision;
+  state: "current" | "held" | "expired";
+  centroidBodyXyzM: LaboratoryMetricPoint3;
+  cellCentersBodyXyzM: readonly LaboratoryMetricPoint3[];
+}
+
+export interface LaboratoryMetricRigVisual {
+  lengthM: number;
+  widthM: number;
+  nominalSensorHeightM: number;
+}
+
+export interface LaboratoryMetricCorridorVisual {
+  forwardLengthM: number;
+  rearMarginM: number;
+  halfWidthM: number;
+}
+
+function tokenColor(
+  host: HTMLElement,
+  token: string,
+  fallback: readonly [number, number, number],
+): THREE.Color {
+  const value = getComputedStyle(host).getPropertyValue(token).trim();
+  if (value.startsWith("#")) return new THREE.Color(value);
+  const channels = value.match(/[\d.]+/g)?.slice(0, 3).map(Number);
+  const [red, green, blue] = channels?.length === 3 ? channels : fallback;
+  return new THREE.Color(red / 255, green / 255, blue / 255);
+}
+
+function disposeRenderable(object: THREE.Object3D): void {
+  const renderable = object as THREE.Object3D & {
+    geometry?: THREE.BufferGeometry;
+    material?: THREE.Material | THREE.Material[];
+  };
+  renderable.geometry?.dispose();
+  const materials = Array.isArray(renderable.material)
+    ? renderable.material
+    : renderable.material
+      ? [renderable.material]
+      : [];
+  materials.forEach((material) => material.dispose());
+}
+
+function scenePoint(point: LaboratoryMetricPoint3): LaboratoryMetricPoint3 {
+  return [point[0], point[2], -point[1]];
+}
+
+function positions(points: readonly LaboratoryMetricPoint3[]): Float32Array {
+  const result = new Float32Array(points.length * 3);
+  points.forEach((point, index) => {
+    const [x, y, z] = scenePoint(point);
+    const offset = index * 3;
+    result[offset] = x;
+    result[offset + 1] = y;
+    result[offset + 2] = z;
+  });
+  return result;
+}
+
+function decisionColor(
+  host: HTMLElement,
+  decision: LaboratoryMetricDecision,
+): THREE.Color {
+  if (decision === "threat") {
+    return tokenColor(host, "--nodedc-danger-rgb", [255, 104, 112]);
+  }
+  if (decision === "not-threat") {
+    return tokenColor(host, "--nodedc-success-rgb", [181, 255, 90]);
+  }
+  return tokenColor(host, "--nodedc-warning-rgb", [255, 197, 92]);
+}
+
+export function LaboratoryMetricEvidenceScene({
+  pointCloudBodyXyzM,
+  obstacles,
+  rig,
+  corridor,
+  mode,
+  label,
+}: {
+  pointCloudBodyXyzM: readonly LaboratoryMetricPoint3[];
+  obstacles: readonly LaboratoryMetricObstacleVisual[];
+  rig: LaboratoryMetricRigVisual;
+  corridor: LaboratoryMetricCorridorVisual;
+  mode: LaboratoryMetricSceneMode;
+  label: string;
+}) {
+  const hostRef = useRef<HTMLDivElement | null>(null);
+  const sceneRef = useRef<THREE.Scene | null>(null);
+  const cameraRef = useRef<THREE.PerspectiveCamera | null>(null);
+  const controlsRef = useRef<OrbitControls | null>(null);
+  const contentRef = useRef<THREE.Group | null>(null);
+  const [renderError, setRenderError] = useState<string | null>(null);
+
+  useEffect(() => {
+    const host = hostRef.current;
+    if (!host) return;
+    let renderer: THREE.WebGLRenderer;
+    try {
+      renderer = new THREE.WebGLRenderer({
+        antialias: true,
+        alpha: false,
+        powerPreference: "high-performance",
+      });
+    } catch {
+      setRenderError("Браузер не смог создать метрическую 3D-сцену.");
+      return;
+    }
+    renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2));
+    renderer.outputColorSpace = THREE.SRGBColorSpace;
+    renderer.setClearColor(tokenColor(host, "--nodedc-canvas", [5, 5, 6]), 1);
+    renderer.domElement.setAttribute("aria-label", label);
+    renderer.domElement.setAttribute("role", "img");
+    host.prepend(renderer.domElement);
+
+    const scene = new THREE.Scene();
+    const camera = new THREE.PerspectiveCamera(48, 1, 0.01, 300);
+    const controls = new OrbitControls(camera, renderer.domElement);
+    controls.enableDamping = true;
+    controls.dampingFactor = 0.08;
+    controls.enablePan = true;
+    controls.enableZoom = true;
+    controls.screenSpacePanning = true;
+    controls.minDistance = 0.4;
+    controls.maxDistance = 80;
+    const content = new THREE.Group();
+    scene.add(content);
+    sceneRef.current = scene;
+    cameraRef.current = camera;
+    controlsRef.current = controls;
+    contentRef.current = content;
+
+    const resize = () => {
+      const width = Math.max(host.clientWidth, 1);
+      const height = Math.max(host.clientHeight, 1);
+      camera.aspect = width / height;
+      camera.updateProjectionMatrix();
+      renderer.setSize(width, height, false);
+    };
+    const observer = new ResizeObserver(resize);
+    observer.observe(host);
+    resize();
+
+    let animationFrame = 0;
+    const render = () => {
+      animationFrame = window.requestAnimationFrame(render);
+      controls.update();
+      renderer.render(scene, camera);
+    };
+    render();
+    return () => {
+      window.cancelAnimationFrame(animationFrame);
+      observer.disconnect();
+      controls.dispose();
+      scene.traverse(disposeRenderable);
+      renderer.dispose();
+      renderer.domElement.remove();
+      sceneRef.current = null;
+      cameraRef.current = null;
+      controlsRef.current = null;
+      contentRef.current = null;
+    };
+  }, [label]);
+
+  useEffect(() => {
+    const host = hostRef.current;
+    const content = contentRef.current;
+    if (!host || !content) return;
+    while (content.children.length) {
+      const child = content.children[0];
+      if (!child) break;
+      content.remove(child);
+      child.traverse(disposeRenderable);
+    }
+
+    const contextGeometry = new THREE.BufferGeometry();
+    contextGeometry.setAttribute(
+      "position",
+      new THREE.BufferAttribute(positions(pointCloudBodyXyzM), 3),
+    );
+    content.add(new THREE.Points(
+      contextGeometry,
+      new THREE.PointsMaterial({
+        color: tokenColor(host, "--nodedc-text-muted", [147, 151, 159]),
+        size: 1.7,
+        sizeAttenuation: false,
+        transparent: true,
+        opacity: 0.34,
+        depthWrite: false,
+      }),
+    ));
+
+    for (const obstacle of obstacles) {
+      const color = decisionColor(host, obstacle.decision);
+      const cellsGeometry = new THREE.BufferGeometry();
+      cellsGeometry.setAttribute(
+        "position",
+        new THREE.BufferAttribute(positions(obstacle.cellCentersBodyXyzM), 3),
+      );
+      content.add(new THREE.Points(
+        cellsGeometry,
+        new THREE.PointsMaterial({
+          color,
+          size: obstacle.state === "current" ? 4.8 : 3.8,
+          sizeAttenuation: false,
+          transparent: true,
+          opacity: obstacle.state === "current" ? 0.94 : 0.45,
+          depthWrite: false,
+        }),
+      ));
+      const centroid = new THREE.Mesh(
+        new THREE.SphereGeometry(0.1, 16, 12),
+        new THREE.MeshBasicMaterial({ color, wireframe: obstacle.state !== "current" }),
+      );
+      centroid.position.fromArray(scenePoint(obstacle.centroidBodyXyzM));
+      centroid.userData.evidenceId = obstacle.id;
+      content.add(centroid);
+    }
+
+    const corridorLength = rig.lengthM / 2 + corridor.forwardLengthM + corridor.rearMarginM;
+    const corridorCenterX = (rig.lengthM / 2 + corridor.forwardLengthM - corridor.rearMarginM) / 2;
+    const corridorMesh = new THREE.Mesh(
+      new THREE.PlaneGeometry(corridorLength, corridor.halfWidthM * 2),
+      new THREE.MeshBasicMaterial({
+        color: tokenColor(host, "--nodedc-accent-rgb", [232, 56, 126]),
+        transparent: true,
+        opacity: 0.11,
+        side: THREE.DoubleSide,
+        depthWrite: false,
+      }),
+    );
+    corridorMesh.rotation.x = -Math.PI / 2;
+    corridorMesh.position.set(corridorCenterX, 0.01, 0);
+    content.add(corridorMesh);
+    const corridorOutline = new THREE.LineSegments(
+      new THREE.EdgesGeometry(new THREE.BoxGeometry(corridorLength, 0.01, corridor.halfWidthM * 2)),
+      new THREE.LineBasicMaterial({
+        color: tokenColor(host, "--nodedc-accent-rgb", [232, 56, 126]),
+        transparent: true,
+        opacity: 0.7,
+      }),
+    );
+    corridorOutline.position.set(corridorCenterX, 0.015, 0);
+    content.add(corridorOutline);
+
+    const body = new THREE.LineSegments(
+      new THREE.EdgesGeometry(new THREE.BoxGeometry(rig.lengthM, 0.34, rig.widthM)),
+      new THREE.LineBasicMaterial({
+        color: tokenColor(host, "--nodedc-foreground-rgb", [245, 245, 245]),
+        transparent: true,
+        opacity: 0.86,
+      }),
+    );
+    body.position.y = 0.17;
+    content.add(body);
+    const lidar = new THREE.Mesh(
+      new THREE.CylinderGeometry(0.08, 0.08, 0.08, 20),
+      new THREE.MeshBasicMaterial({
+        color: tokenColor(host, "--nodedc-foreground-rgb", [245, 245, 245]),
+      }),
+    );
+    lidar.position.y = rig.nominalSensorHeightM;
+    content.add(lidar);
+
+    const grid = new THREE.GridHelper(
+      Math.max(20, corridor.forwardLengthM * 2.5),
+      40,
+      tokenColor(host, "--nodedc-text-muted", [96, 99, 106]),
+      tokenColor(host, "--nodedc-glass-outline", [48, 50, 56]),
+    );
+    const gridMaterials = Array.isArray(grid.material) ? grid.material : [grid.material];
+    gridMaterials.forEach((material) => {
+      material.transparent = true;
+      material.opacity = 0.15;
+      material.depthWrite = false;
+    });
+    content.add(grid);
+  }, [corridor, obstacles, pointCloudBodyXyzM, rig]);
+
+  const resetView = () => {
+    const camera = cameraRef.current;
+    const controls = controlsRef.current;
+    if (!camera || !controls) return;
+    controls.target.set(corridor.forwardLengthM * 0.35, 0.6, 0);
+    if (mode === "plan") {
+      camera.position.set(corridor.forwardLengthM * 0.35, 15, 0.001);
+      camera.up.set(0, 0, -1);
+    } else {
+      camera.position.set(-4.5, 4.8, 8.5);
+      camera.up.set(0, 1, 0);
+    }
+    camera.updateProjectionMatrix();
+    controls.update();
+  };
+
+  useEffect(resetView, [corridor.forwardLengthM, mode, obstacles]);
+
+  return (
+    <div className="laboratory-metric-evidence-scene">
+      <div ref={hostRef} className="laboratory-metric-evidence-scene__viewport">
+        {renderError ? <p>{renderError}</p> : null}
+      </div>
+      <div className="laboratory-metric-evidence-scene__toolbar">
+        <Button
+          variant="secondary"
+          size="compact"
+          icon={<Icon name="refresh" size={14} />}
+          onClick={resetView}
+        >
+          Сбросить ракурс
+        </Button>
+        <span>ЛКМ · вращение · колесо · масштаб · ПКМ · панорама</span>
+      </div>
+      <div className="laboratory-metric-evidence-scene__legend">
+        <span data-decision="threat">Угроза</span>
+        <span data-decision="not-threat">Вне коридора</span>
+        <span data-decision="unknown">Неизвестно</span>
+        <span data-decision="context">LiDAR context</span>
+      </div>
+    </div>
+  );
+}
diff --git a/apps/control-station/src/components/laboratory/RecordedEvidenceVideoScene.tsx b/apps/control-station/src/components/laboratory/RecordedEvidenceVideoScene.tsx
new file mode 100644
index 0000000..e0ba202
--- /dev/null
+++ b/apps/control-station/src/components/laboratory/RecordedEvidenceVideoScene.tsx
@@ -0,0 +1,134 @@
+import { useEffect, useRef } from "react";
+
+import {
+  RecordedFmp4Player,
+  type RecordedObservationPlayback,
+} from "../RecordedFmp4Player";
+import type { ObservationSourceDescriptor } from "../../core/runtime/contracts";
+
+export type RecordedEvidenceBoxTone =
+  | "accent"
+  | "danger"
+  | "success"
+  | "warning"
+  | "neutral";
+
+export interface RecordedEvidenceBox {
+  boxXyxy: readonly [number, number, number, number];
+  label: string;
+  tone: RecordedEvidenceBoxTone;
+  dashed?: boolean;
+}
+
+function rgba(
+  host: HTMLElement,
+  token: string,
+  fallback: readonly [number, number, number],
+  alpha = 1,
+): string {
+  const channels = getComputedStyle(host)
+    .getPropertyValue(token)
+    .trim()
+    .match(/[\d.]+/g)
+    ?.slice(0, 3)
+    .map(Number);
+  const [red, green, blue] = channels?.length === 3 ? channels : fallback;
+  return `rgba(${red}, ${green}, ${blue}, ${alpha})`;
+}
+
+function toneColor(host: HTMLElement, tone: RecordedEvidenceBoxTone): string {
+  if (tone === "danger") return rgba(host, "--nodedc-danger-rgb", [255, 104, 112]);
+  if (tone === "success") return rgba(host, "--nodedc-success-rgb", [181, 255, 90]);
+  if (tone === "warning") return rgba(host, "--nodedc-warning-rgb", [255, 197, 92]);
+  if (tone === "neutral") return rgba(host, "--nodedc-foreground-rgb", [245, 245, 245], 0.7);
+  return rgba(host, "--nodedc-accent-rgb", [232, 56, 126]);
+}
+
+export function RecordedEvidenceVideoScene({
+  source,
+  playback,
+  imageWidth,
+  imageHeight,
+  boxes,
+  ariaLabel,
+  onPlaybackChange,
+}: {
+  source: ObservationSourceDescriptor;
+  playback: RecordedObservationPlayback;
+  imageWidth: number;
+  imageHeight: number;
+  boxes: readonly RecordedEvidenceBox[];
+  ariaLabel: string;
+  onPlaybackChange: (playback: RecordedObservationPlayback) => void;
+}) {
+  const hostRef = useRef<HTMLDivElement | null>(null);
+  const canvasRef = useRef<HTMLCanvasElement | null>(null);
+
+  useEffect(() => {
+    const host = hostRef.current;
+    const canvas = canvasRef.current;
+    if (!host || !canvas) return;
+    const context = canvas.getContext("2d");
+    if (!context) return;
+
+    const render = () => {
+      const width = Math.max(host.clientWidth, 1);
+      const height = Math.max(host.clientHeight, 1);
+      const pixelRatio = Math.min(window.devicePixelRatio, 1.5);
+      canvas.width = Math.round(width * pixelRatio);
+      canvas.height = Math.round(height * pixelRatio);
+      canvas.style.width = `${width}px`;
+      canvas.style.height = `${height}px`;
+      context.setTransform(pixelRatio, 0, 0, pixelRatio, 0, 0);
+      context.clearRect(0, 0, width, height);
+
+      const scale = Math.min(width / imageWidth, height / imageHeight);
+      const drawWidth = imageWidth * scale;
+      const drawHeight = imageHeight * scale;
+      const offsetX = (width - drawWidth) / 2;
+      const offsetY = (height - drawHeight) / 2;
+      for (const item of boxes) {
+        const [left, top, right, bottom] = item.boxXyxy;
+        const x = offsetX + left * scale;
+        const y = offsetY + top * scale;
+        const boxWidth = (right - left) * scale;
+        const boxHeight = (bottom - top) * scale;
+        const stroke = toneColor(host, item.tone);
+        context.strokeStyle = stroke;
+        context.lineWidth = Math.max(1.5, 2 * scale);
+        context.setLineDash(item.dashed ? [5, 4] : []);
+        context.strokeRect(x, y, boxWidth, boxHeight);
+        context.setLineDash([]);
+
+        const fontSize = Math.max(9, 10 * scale);
+        context.font = `650 ${fontSize}px Inter, system-ui, sans-serif`;
+        const labelWidth = Math.min(drawWidth, context.measureText(item.label).width + 8);
+        const labelHeight = fontSize + 6;
+        const labelX = Math.min(offsetX + drawWidth - labelWidth, Math.max(offsetX, x));
+        const labelY = Math.max(offsetY, y - labelHeight);
+        context.fillStyle = rgba(host, "--nodedc-canvas-rgb", [5, 5, 6], 0.9);
+        context.fillRect(labelX, labelY, labelWidth, labelHeight);
+        context.fillStyle = stroke;
+        context.fillText(item.label, labelX + 4, labelY + fontSize + 1, labelWidth - 8);
+      }
+    };
+
+    const observer = new ResizeObserver(render);
+    observer.observe(host);
+    render();
+    return () => observer.disconnect();
+  }, [boxes, imageHeight, imageWidth]);
+
+  return (
+    <div className="recorded-evidence-video-scene" ref={hostRef}>
+      <RecordedFmp4Player
+        source={source}
+        playback={playback}
+        interactive
+        prepare
+        onPlaybackChange={onPlaybackChange}
+      />
+      <canvas ref={canvasRef} role="img" aria-label={ariaLabel} />
+    </div>
+  );
+}
diff --git a/apps/control-station/src/core/laboratory/advancedIndex.ts b/apps/control-station/src/core/laboratory/advancedIndex.ts
index 062ead9..415df5b 100644
--- a/apps/control-station/src/core/laboratory/advancedIndex.ts
+++ b/apps/control-station/src/core/laboratory/advancedIndex.ts
@@ -35,8 +35,10 @@ import { fetchE46GRectifiedDetectorBakeoff } from "./e46gRectifiedDetectorBakeof
 import { fetchE46HFullRectifiedFrontReplay } from "./e46hFullRectifiedFrontReplay";
 import { fetchE46IGroundingDinoFullReplay } from "./e46iGroundingDinoFullReplay";
 import { fetchE46JRawFisheyeRealtime } from "./e46jRawFisheyeRealtime";
+import { fetchM4ThreatReplayResult } from "./m4ReplayThreat";
 
 export type AdvancedLaboratoryWorkId =
+  | "m4-replay-threat"
   | "l3-pointpillars-visual-audit"
   | "l31-pointpillars-ravnoves"
   | "l32-pointpillars-camera-review"
@@ -76,6 +78,7 @@ export interface AdvancedLaboratoryIndexItem {
 }
 
 const WORK_IDS: readonly AdvancedLaboratoryWorkId[] = [
+  "m4-replay-threat",
   "l3-pointpillars-visual-audit",
   "l31-pointpillars-ravnoves",
   "l32-pointpillars-camera-review",
@@ -110,6 +113,7 @@ const WORK_IDS: readonly AdvancedLaboratoryWorkId[] = [
 ];
 
 const RESULT_PREFIX: Readonly<Record<AdvancedLaboratoryWorkId, string>> = {
+  "m4-replay-threat": "m4-threat-replay",
   "l3-pointpillars-visual-audit": "l3-pointpillars-visual-audit",
   "l31-pointpillars-ravnoves": "l31-pointpillars-ravnoves",
   "l32-pointpillars-camera-review": "l32-pointpillars-camera-review",
@@ -151,6 +155,7 @@ export function isAdvancedLaboratoryWorkId(
 
 export function emptyAdvancedLaboratoryResults(): AdvancedLaboratoryResults {
   return {
+    m4Threat: null,
     l3: null,
     l31: null,
     l32: null,
@@ -273,7 +278,8 @@ export function advancedLaboratoryResultAvailable(
   workId: AdvancedLaboratoryWorkId,
   results: AdvancedLaboratoryResults,
 ): boolean {
-  return workId === "l3-pointpillars-visual-audit" ? results.l3 !== null
+  return workId === "m4-replay-threat" ? results.m4Threat !== null
+    : workId === "l3-pointpillars-visual-audit" ? results.l3 !== null
     : workId === "l31-pointpillars-ravnoves" ? results.l31 !== null
     : workId === "l32-pointpillars-camera-review" ? results.l32 !== null
     : workId === "l33-camera-first-detector-review" ? results.l33 !== null
@@ -317,7 +323,9 @@ export async function fetchAdvancedLaboratoryResult(
   } = {},
 ): Promise<AdvancedLaboratoryResults> {
   const results = emptyAdvancedLaboratoryResults();
-  if (workId === "l3-pointpillars-visual-audit") {
+  if (workId === "m4-replay-threat") {
+    results.m4Threat = await fetchM4ThreatReplayResult({ fetcher, signal });
+  } else if (workId === "l3-pointpillars-visual-audit") {
     results.l3 = await fetchL3PointPillarsVisualAudit({ fetcher, signal });
   } else if (workId === "l31-pointpillars-ravnoves") {
     results.l31 = await fetchL31PointPillarsRavnoves({ fetcher, signal });
diff --git a/apps/control-station/src/core/laboratory/advancedLaboratoryResults.ts b/apps/control-station/src/core/laboratory/advancedLaboratoryResults.ts
index 0680fcd..fba83e1 100644
--- a/apps/control-station/src/core/laboratory/advancedLaboratoryResults.ts
+++ b/apps/control-station/src/core/laboratory/advancedLaboratoryResults.ts
@@ -31,8 +31,10 @@ import type { E46GRectifiedDetectorBakeoffResult } from "./e46gRectifiedDetector
 import type { E46HFullRectifiedFrontReplayResult } from "./e46hFullRectifiedFrontReplay";
 import type { E46IGroundingDinoFullReplayResult } from "./e46iGroundingDinoFullReplay";
 import type { E46JRawFisheyeRealtimeResult } from "./e46jRawFisheyeRealtime";
+import type { M4ThreatReplayResult } from "./m4ReplayThreat";
 
 export interface AdvancedLaboratoryResults {
+  m4Threat: M4ThreatReplayResult | null;
   l3: L3PointPillarsVisualAuditResult | null;
   l31: L31PointPillarsRavnovesResult | null;
   l32: L32PointPillarsCameraReviewResult | null;
diff --git a/apps/control-station/src/core/laboratory/advancedResults.ts b/apps/control-station/src/core/laboratory/advancedResults.ts
index 6c438d6..dabc09c 100644
--- a/apps/control-station/src/core/laboratory/advancedResults.ts
+++ b/apps/control-station/src/core/laboratory/advancedResults.ts
@@ -235,7 +235,6 @@ export class AdvancedLaboratoryContractError extends Error {
     this.name = "AdvancedLaboratoryContractError";
   }
 }
-
 export type LaboratoryFetch = (
   input: RequestInfo | URL,
   init?: RequestInit,
@@ -968,6 +967,7 @@ export async function fetchAdvancedLaboratoryResults({
   const e39 = settledCatalogValue(settled[7]);
   const e40 = settledCatalogValue(settled[8]);
   return {
+    m4Threat: null,
     l3: null, l31: null,
     l32: null,
     l33: null,
diff --git a/apps/control-station/src/core/laboratory/m4ReplayThreat.ts b/apps/control-station/src/core/laboratory/m4ReplayThreat.ts
new file mode 100644
index 0000000..cf21708
--- /dev/null
+++ b/apps/control-station/src/core/laboratory/m4ReplayThreat.ts
@@ -0,0 +1,460 @@
+export type M4ThreatDecision = "threat" | "not-threat" | "unknown";
+export type M4ThreatMotion = "moving" | "stationary" | "unknown";
+export type M4Point3 = readonly [number, number, number];
+
+export interface M4ThreatReplayResult {
+  resultId: string;
+  createdAtUtc: string;
+  profileId: string;
+  rigProfileId: string;
+  corridorProfileId: string;
+  sourceResultIds: {
+    detector: string;
+    geometry: string;
+    temporal: string;
+  };
+  metrics: {
+    decisions: Record<M4ThreatDecision, number>;
+    evidence: {
+      cameraOnly: number;
+      currentMetric: number;
+      staleOrHeld: number;
+    };
+    fixtures: {
+      critical: number;
+      criticalFalseNotThreat: number;
+      passed: number;
+      total: number;
+    };
+    runtime: {
+      framesPerSecond: number;
+      providerLatencyP50Ms: number;
+      providerLatencyP95Ms: number;
+      providerLatencyMaxMs: number;
+    };
+    reasonCounts: Readonly<Record<string, number>>;
+  };
+  configuration: {
+    virtualBodyM: readonly [number, number];
+    nominalSensorHeightM: number;
+    forwardCorridorM: number;
+    predictionHorizonSeconds: number;
+  };
+  limitations: readonly string[];
+}
+
+export interface M4ThreatAssessment {
+  componentId: string;
+  decision: M4ThreatDecision;
+  corridorIntersection: "intersects" | "clear" | "unknown";
+  relativeSpeedMps: number | null;
+  closestApproachM: number | null;
+  ttcSeconds: number | null;
+  reasonCodes: readonly string[];
+}
+
+export interface M4ThreatMetricVisual {
+  componentId: string;
+  state: "current" | "held" | "expired";
+  motion: M4ThreatMotion;
+  centroidBodyXyzM: M4Point3;
+  cellCentersBodyXyzM: readonly M4Point3[];
+  assessment: M4ThreatAssessment;
+}
+
+export interface M4ThreatCameraProposal {
+  proposalId: string;
+  bboxXyxy: readonly [number, number, number, number];
+  objectness: number;
+  semanticHint: string | null;
+  occupiedSupport: boolean;
+  rangeM: number | null;
+  threatDecision: M4ThreatDecision | null;
+  threatReasonCodes: readonly string[];
+}
+
+export interface M4ThreatVisualFrame {
+  resultId: string;
+  ordinal: number;
+  sequence: number;
+  frameId: string;
+  sourceTimeNs: number;
+  pointCloudBodyXyzM: readonly M4Point3[];
+  pointCloudSourceCount: number;
+  pointCloudSampleCount: number;
+  metricObstacles: readonly M4ThreatMetricVisual[];
+  cameraProposals: readonly M4ThreatCameraProposal[];
+  rig: {
+    lengthM: number;
+    widthM: number;
+    nominalSensorHeightM: number;
+  };
+  corridor: {
+    forwardLengthM: number;
+    rearMarginM: number;
+    halfWidthM: number;
+    predictionHorizonSeconds: number;
+  };
+}
+
+export interface M4ThreatVisualIndexItem {
+  ordinal: number;
+  sequence: number;
+  frameId: string;
+  sourceTimeNs: number;
+  metricObstacleCount: number;
+  cameraProposalCount: number;
+  pointCloudSampleCount: number;
+}
+
+export interface M4ThreatVideoFrame {
+  frameIndex: number;
+  sessionSeconds: number;
+  sourceAvailable: boolean;
+  cameraProposals: readonly M4ThreatCameraProposal[];
+  decisionCounts: Record<M4ThreatDecision, number>;
+}
+
+export interface M4ThreatVideoOverlay {
+  resultId: string;
+  recordedSourceSessionId: "20260720T065719Z_viewer_live";
+  imageWidth: 800;
+  imageHeight: 600;
+  timelineStartSeconds: number;
+  timelineEndSeconds: number;
+  frames: readonly M4ThreatVideoFrame[];
+}
+
+type LaboratoryFetch = (input: RequestInfo | URL, init?: RequestInit) => Promise<Response>;
+class M4ThreatContractError extends Error {}
+const object = (value: unknown, label: string): Record<string, unknown> => {
+  if (!value || typeof value !== "object" || Array.isArray(value)) {
+    throw new M4ThreatContractError(`${label}: ожидался объект.`);
+  }
+  return value as Record<string, unknown>;
+};
+const array = (value: unknown, label: string): readonly unknown[] => {
+  if (!Array.isArray(value)) throw new M4ThreatContractError(`${label}: ожидался массив.`);
+  return value;
+};
+const text = (value: unknown, label: string): string => {
+  if (typeof value !== "string" || !value.trim()) {
+    throw new M4ThreatContractError(`${label}: ожидалась строка.`);
+  }
+  return value;
+};
+const number = (value: unknown, label: string): number => {
+  if (typeof value !== "number" || !Number.isFinite(value)) {
+    throw new M4ThreatContractError(`${label}: ожидалось число.`);
+  }
+  return value;
+};
+const integer = (value: unknown, label: string): number => {
+  const parsed = number(value, label);
+  if (!Number.isInteger(parsed) || parsed < 0) {
+    throw new M4ThreatContractError(`${label}: ожидалось целое.`);
+  }
+  return parsed;
+};
+const exact = <T extends string | number | boolean>(
+  value: unknown,
+  expected: T,
+  label: string,
+): T => {
+  if (value !== expected) throw new M4ThreatContractError(`${label}: нарушен контракт.`);
+  return expected;
+};
+const optionalNumber = (value: unknown, label: string): number | null => (
+  value === null ? null : number(value, label)
+);
+const vector = (value: unknown, size: number, label: string): number[] => {
+  const parsed = array(value, label).map((item) => number(item, label));
+  if (parsed.length !== size) throw new M4ThreatContractError(`${label}: неверная размерность.`);
+  return parsed;
+};
+const decision = (value: unknown, label: string): M4ThreatDecision => {
+  if (value !== "threat" && value !== "not-threat" && value !== "unknown") {
+    throw new M4ThreatContractError(`${label}: неизвестное решение.`);
+  }
+  return value;
+};
+const motion = (value: unknown): M4ThreatMotion => {
+  if (value !== "moving" && value !== "stationary" && value !== "unknown") {
+    throw new M4ThreatContractError("M4.6 motion: неизвестное состояние.");
+  }
+  return value;
+};
+const resultId = (value: unknown): string => {
+  const parsed = text(value, "M4.6 result id");
+  if (!/^m4-threat-replay-[a-f0-9]{64}$/.test(parsed)) {
+    throw new M4ThreatContractError("M4.6 result id: нарушена идентичность.");
+  }
+  return parsed;
+};
+
+function parseAssessment(value: unknown): M4ThreatAssessment {
+  const item = object(value, "M4.6 assessment");
+  const intersection = text(item.corridor_intersection, "M4.6 intersection");
+  if (intersection !== "intersects" && intersection !== "clear" && intersection !== "unknown") {
+    throw new M4ThreatContractError("M4.6 intersection: неизвестное состояние.");
+  }
+  return {
+    componentId: text(item.component_id, "M4.6 component"),
+    decision: decision(item.decision, "M4.6 decision"),
+    corridorIntersection: intersection,
+    relativeSpeedMps: optionalNumber(item.relative_speed_mps, "M4.6 relative speed"),
+    closestApproachM: optionalNumber(item.closest_approach_m, "M4.6 closest approach"),
+    ttcSeconds: optionalNumber(item.ttc_seconds, "M4.6 TTC"),
+    reasonCodes: array(item.reason_codes, "M4.6 reasons").map((reason) => text(reason, "M4.6 reason")),
+  };
+}
+
+function parseCameraProposal(value: unknown): M4ThreatCameraProposal {
+  const item = object(value, "M4.6 camera proposal");
+  return {
+    proposalId: text(item.proposal_id, "M4.6 proposal id"),
+    bboxXyxy: vector(item.bbox_xyxy, 4, "M4.6 bbox") as [number, number, number, number],
+    objectness: number(item.objectness, "M4.6 objectness"),
+    semanticHint: item.semantic_hint === null ? null : text(item.semantic_hint, "M4.6 hint"),
+    occupiedSupport: typeof item.occupied_support === "boolean" ? item.occupied_support : false,
+    rangeM: optionalNumber(item.range_m, "M4.6 range"),
+    threatDecision: item.threat_decision === null
+      ? null
+      : decision(item.threat_decision, "M4.6 camera threat"),
+    threatReasonCodes: array(item.threat_reason_codes, "M4.6 threat reasons").map(
+      (reason) => text(reason, "M4.6 threat reason"),
+    ),
+  };
+}
+
+export async function fetchM4ThreatReplayResult({
+  fetcher = fetch,
+  signal,
+}: {
+  fetcher?: LaboratoryFetch;
+  signal?: AbortSignal;
+} = {}): Promise<M4ThreatReplayResult | null> {
+  const response = await fetcher("/api/v1/laboratory/m4-threat/results?limit=1", {
+    headers: { Accept: "application/json" },
+    signal,
+  });
+  if (!response.ok) throw new M4ThreatContractError(`M4.6 LAB недоступен: HTTP ${response.status}.`);
+  const catalog = object(await response.json(), "M4.6 catalog");
+  exact(catalog.schema_version, "missioncore.m4-threat-replay-catalog/v1", "M4.6 catalog schema");
+  const items = array(catalog.items, "M4.6 results");
+  if (!items.length) return null;
+  const item = object(items[0], "M4.6 result");
+  exact(item.schema_version, "missioncore.m4-threat-replay-view/v1", "M4.6 view schema");
+  exact(item.accepted, true, "M4.6 acceptance");
+  exact(item.authority, "replay-simulated", "M4.6 authority");
+  exact(item.physical_collision_accepted, false, "M4.6 physical authority");
+  exact(item.actuation_allowed, false, "M4.6 actuation");
+  const metrics = object(item.metrics, "M4.6 metrics");
+  const decisions = object(metrics.decisions, "M4.6 decisions");
+  const evidence = object(metrics.evidence, "M4.6 evidence");
+  const fixtures = object(metrics.fixtures, "M4.6 fixtures");
+  const runtime = object(metrics.runtime, "M4.6 runtime");
+  const configuration = object(item.configuration, "M4.6 configuration");
+  const sourceResultIds = object(item.source_result_ids, "M4.6 sources");
+  return {
+    resultId: resultId(item.result_id),
+    createdAtUtc: text(item.created_at_utc, "M4.6 created"),
+    profileId: text(item.profile_id, "M4.6 profile"),
+    rigProfileId: text(item.rig_profile_id, "M4.6 rig"),
+    corridorProfileId: text(item.corridor_profile_id, "M4.6 corridor"),
+    sourceResultIds: {
+      detector: text(sourceResultIds.detector, "M4.6 detector"),
+      geometry: text(sourceResultIds.geometry, "M4.6 geometry"),
+      temporal: text(sourceResultIds.temporal, "M4.6 temporal"),
+    },
+    metrics: {
+      decisions: {
+        threat: integer(decisions.threat, "M4.6 threat count"),
+        "not-threat": integer(decisions["not-threat"], "M4.6 clear count"),
+        unknown: integer(decisions.unknown, "M4.6 unknown count"),
+      },
+      evidence: {
+        cameraOnly: integer(evidence["camera-only"], "M4.6 camera-only"),
+        currentMetric: integer(evidence["current-metric"], "M4.6 metric"),
+        staleOrHeld: integer(evidence["stale-or-held"], "M4.6 stale"),
+      },
+      fixtures: {
+        critical: integer(fixtures.critical, "M4.6 critical fixtures"),
+        criticalFalseNotThreat: integer(fixtures.critical_false_not_threat, "M4.6 false-safe"),
+        passed: integer(fixtures.passed, "M4.6 fixtures passed"),
+        total: integer(fixtures.total, "M4.6 fixtures total"),
+      },
+      runtime: {
+        framesPerSecond: number(runtime.frames_per_second, "M4.6 FPS"),
+        providerLatencyP50Ms: number(runtime.provider_latency_p50_ms, "M4.6 p50"),
+        providerLatencyP95Ms: number(runtime.provider_latency_p95_ms, "M4.6 p95"),
+        providerLatencyMaxMs: number(runtime.provider_latency_max_ms, "M4.6 max"),
+      },
+      reasonCounts: Object.fromEntries(
+        Object.entries(object(metrics.reason_counts, "M4.6 reasons")).map(
+          ([key, value]) => [key, integer(value, `M4.6 ${key}`)],
+        ),
+      ),
+    },
+    configuration: {
+      virtualBodyM: vector(configuration.virtual_body_m, 2, "M4.6 body") as [number, number],
+      nominalSensorHeightM: number(configuration.nominal_sensor_height_m, "M4.6 height"),
+      forwardCorridorM: number(configuration.forward_corridor_m, "M4.6 corridor"),
+      predictionHorizonSeconds: number(configuration.prediction_horizon_seconds, "M4.6 horizon"),
+    },
+    limitations: array(item.limitations, "M4.6 limitations").map((value) => text(value, "M4.6 limitation")),
+  };
+}
+
+export async function fetchM4ThreatVisualIndex(
+  result: string,
+  { fetcher = fetch, signal }: { fetcher?: LaboratoryFetch; signal?: AbortSignal } = {},
+): Promise<readonly M4ThreatVisualIndexItem[]> {
+  const response = await fetcher(`/api/v1/laboratory/m4-threat/results/${result}/visuals`, {
+    headers: { Accept: "application/json" },
+    signal,
+  });
+  if (!response.ok) throw new M4ThreatContractError(`M4.6 visual index: HTTP ${response.status}.`);
+  const payload = object(await response.json(), "M4.6 visual index");
+  exact(payload.schema_version, "missioncore.m4-threat-visual-catalog/v1", "M4.6 visual schema");
+  exact(payload.result_id, result, "M4.6 visual result");
+  return array(payload.items, "M4.6 visual items").map((raw) => {
+    const item = object(raw, "M4.6 visual item");
+    return {
+      ordinal: integer(item.ordinal, "M4.6 visual ordinal"),
+      sequence: integer(item.sequence, "M4.6 visual sequence"),
+      frameId: text(item.frame_id, "M4.6 visual frame"),
+      sourceTimeNs: integer(item.source_time_ns, "M4.6 visual time"),
+      metricObstacleCount: integer(item.metric_obstacle_count, "M4.6 visual metric"),
+      cameraProposalCount: integer(item.camera_proposal_count, "M4.6 visual camera"),
+      pointCloudSampleCount: integer(item.point_cloud_sample_count, "M4.6 visual points"),
+    };
+  });
+}
+
+export async function fetchM4ThreatVisual(
+  result: string,
+  ordinal: number,
+  { fetcher = fetch, signal }: { fetcher?: LaboratoryFetch; signal?: AbortSignal } = {},
+): Promise<M4ThreatVisualFrame> {
+  const response = await fetcher(
+    `/api/v1/laboratory/m4-threat/results/${result}/visuals/${ordinal}`,
+    { headers: { Accept: "application/json" }, signal },
+  );
+  if (!response.ok) throw new M4ThreatContractError(`M4.6 visual frame: HTTP ${response.status}.`);
+  const item = object(await response.json(), "M4.6 visual frame");
+  exact(item.schema_version, "missioncore.perception-threat-visual-frame/v1", "M4.6 frame schema");
+  exact(item.result_id, result, "M4.6 frame result");
+  const rig = object(item.rig, "M4.6 visual rig");
+  const corridor = object(item.corridor, "M4.6 visual corridor");
+  return {
+    resultId: result,
+    ordinal: integer(item.ordinal, "M4.6 ordinal"),
+    sequence: integer(item.sequence, "M4.6 sequence"),
+    frameId: text(item.frame_id, "M4.6 frame id"),
+    sourceTimeNs: integer(item.source_time_ns, "M4.6 frame time"),
+    pointCloudBodyXyzM: array(item.point_cloud_body_xyz_m, "M4.6 points").map(
+      (point) => vector(point, 3, "M4.6 point") as [number, number, number],
+    ),
+    pointCloudSourceCount: integer(item.point_cloud_source_count, "M4.6 source points"),
+    pointCloudSampleCount: integer(item.point_cloud_sample_count, "M4.6 sample points"),
+    metricObstacles: array(item.metric_obstacles, "M4.6 metric visuals").map((raw) => {
+      const value = object(raw, "M4.6 metric visual");
+      const state = text(value.state, "M4.6 temporal state");
+      if (state !== "current" && state !== "held" && state !== "expired") {
+        throw new M4ThreatContractError("M4.6 temporal state: неизвестное состояние.");
+      }
+      return {
+        componentId: text(value.component_id, "M4.6 visual component"),
+        state,
+        motion: motion(value.motion),
+        centroidBodyXyzM: vector(value.centroid_body_xyz_m, 3, "M4.6 centroid") as [number, number, number],
+        cellCentersBodyXyzM: array(value.cell_centers_body_xyz_m, "M4.6 cells").map(
+          (point) => vector(point, 3, "M4.6 cell") as [number, number, number],
+        ),
+        assessment: parseAssessment(value.assessment),
+      };
+    }),
+    cameraProposals: array(item.camera_proposals, "M4.6 camera proposals").map(parseCameraProposal),
+    rig: {
+      lengthM: number(rig.length_m, "M4.6 rig length"),
+      widthM: number(rig.width_m, "M4.6 rig width"),
+      nominalSensorHeightM: number(rig.nominal_sensor_height_m, "M4.6 sensor height"),
+    },
+    corridor: {
+      forwardLengthM: number(corridor.forward_length_m, "M4.6 forward corridor"),
+      rearMarginM: number(corridor.rear_margin_m, "M4.6 rear corridor"),
+      halfWidthM: number(corridor.half_width_m, "M4.6 half width"),
+      predictionHorizonSeconds: number(corridor.prediction_horizon_seconds, "M4.6 visual horizon"),
+    },
+  };
+}
+
+export async function fetchM4ThreatVideoOverlay(
+  result: string,
+  { fetcher = fetch, signal }: { fetcher?: LaboratoryFetch; signal?: AbortSignal } = {},
+): Promise<M4ThreatVideoOverlay> {
+  const response = await fetcher(
+    `/api/v1/laboratory/m4-threat/results/${result}/video-overlay`,
+    { headers: { Accept: "application/json" }, signal },
+  );
+  if (!response.ok) throw new M4ThreatContractError(`M4.6 video overlay: HTTP ${response.status}.`);
+  const payload = object(await response.json(), "M4.6 video overlay");
+  exact(payload.schema_version, "missioncore.m4-threat-video-overlay/v1", "M4.6 video schema");
+  exact(payload.result_id, result, "M4.6 video result");
+  exact(payload.authority, "replay-simulated", "M4.6 video authority");
+  const recorded = object(payload.recorded_source, "M4.6 recorded source");
+  exact(
+    recorded.session_id,
+    "20260720T065719Z_viewer_live",
+    "M4.6 recorded session",
+  );
+  const frames = array(payload.frames, "M4.6 video frames").map((raw, expectedIndex) => {
+    const item = object(raw, "M4.6 video frame");
+    const frameIndex = integer(item.frame_index, "M4.6 video index");
+    if (frameIndex !== expectedIndex) throw new M4ThreatContractError("M4.6 video order.");
+    const counts = object(item.decision_counts, "M4.6 video decisions");
+    return {
+      frameIndex,
+      sessionSeconds: number(item.session_seconds, "M4.6 video time"),
+      sourceAvailable: typeof item.source_available === "boolean" ? item.source_available : false,
+      cameraProposals: array(item.camera_proposals, "M4.6 video proposals").map(parseCameraProposal),
+      decisionCounts: {
+        threat: integer(counts.threat, "M4.6 video threat"),
+        "not-threat": integer(counts["not-threat"], "M4.6 video clear"),
+        unknown: integer(counts.unknown, "M4.6 video unknown"),
+      },
+    };
+  });
+  exact(payload.frame_count, 4489, "M4.6 video frame count");
+  return {
+    resultId: result,
+    recordedSourceSessionId: "20260720T065719Z_viewer_live",
+    imageWidth: exact(payload.image_width, 800, "M4.6 image width"),
+    imageHeight: exact(payload.image_height, 600, "M4.6 image height"),
+    timelineStartSeconds: number(payload.timeline_start_seconds, "M4.6 video start"),
+    timelineEndSeconds: number(payload.timeline_end_seconds, "M4.6 video end"),
+    frames,
+  };
+}
+
+export function selectM4ThreatVideoFrame(
+  frames: readonly M4ThreatVideoFrame[],
+  seconds: number,
+): M4ThreatVideoFrame | null {
+  if (!frames.length) return null;
+  let low = 0;
+  let high = frames.length - 1;
+  while (low < high) {
+    const middle = Math.floor((low + high) / 2);
+    const current = frames[middle];
+    if (!current || current.sessionSeconds < seconds) low = middle + 1;
+    else high = middle;
+  }
+  const current = frames[low] ?? frames[frames.length - 1] ?? null;
+  const previous = frames[Math.max(0, low - 1)] ?? null;
+  if (!current || !previous) return current;
+  return Math.abs(previous.sessionSeconds - seconds) <= Math.abs(current.sessionSeconds - seconds)
+    ? previous
+    : current;
+}
diff --git a/apps/control-station/src/styles.css b/apps/control-station/src/styles.css
index 25d56fe..4c7a3d9 100644
--- a/apps/control-station/src/styles.css
+++ b/apps/control-station/src/styles.css
@@ -9,6 +9,7 @@
 @import "./styles/laboratory-reporting.css";
 @import "./styles/laboratory-evidence-report.css";
 @import "./styles/e34-temporal-layer.css";
+@import "./styles/m4-replay-threat.css";
 @import "./styles/e35-degradation-recovery.css";
 @import "./styles/e30-human-review.css";
 @import "./styles/spatial.css";
diff --git a/apps/control-station/src/styles/l3-pointpillars-visual-audit.css b/apps/control-station/src/styles/l3-pointpillars-visual-audit.css
index 13b0918..e3bdccd 100644
--- a/apps/control-station/src/styles/l3-pointpillars-visual-audit.css
+++ b/apps/control-station/src/styles/l3-pointpillars-visual-audit.css
@@ -46,7 +46,7 @@
   user-select: none;
 }
 
-.e46c-video-scene {
+.recorded-evidence-video-scene {
   position: relative;
   width: 100%;
   height: 100%;
@@ -55,12 +55,12 @@
   background: var(--nodedc-canvas);
 }
 
-.e46c-video-scene > .recorded-media-player {
+.recorded-evidence-video-scene > .recorded-media-player {
   position: absolute;
   inset: 0;
 }
 
-.e46c-video-scene > canvas {
+.recorded-evidence-video-scene > canvas {
   position: absolute;
   z-index: 2;
   inset: 0;
diff --git a/apps/control-station/src/styles/m4-replay-threat.css b/apps/control-station/src/styles/m4-replay-threat.css
new file mode 100644
index 0000000..04fadaa
--- /dev/null
+++ b/apps/control-station/src/styles/m4-replay-threat.css
@@ -0,0 +1,110 @@
+.laboratory-metric-evidence-scene,
+.laboratory-metric-evidence-scene__viewport {
+  width: 100%;
+  height: 100%;
+  min-width: 0;
+  min-height: 0;
+}
+
+.laboratory-metric-evidence-scene {
+  position: relative;
+  overflow: hidden;
+  background: var(--nodedc-canvas);
+}
+
+.laboratory-metric-evidence-scene__viewport {
+  position: absolute;
+  inset: 0;
+}
+
+.laboratory-metric-evidence-scene__viewport canvas {
+  display: block;
+  width: 100%;
+  height: 100%;
+  cursor: grab;
+  touch-action: none;
+}
+
+.laboratory-metric-evidence-scene__viewport canvas:active {
+  cursor: grabbing;
+}
+
+.laboratory-metric-evidence-scene__viewport p {
+  position: absolute;
+  inset: 0;
+  display: grid;
+  place-items: center;
+  margin: 0;
+  color: var(--nodedc-text-muted);
+  font-size: 0.62rem;
+}
+
+.laboratory-metric-evidence-scene__toolbar {
+  position: absolute;
+  z-index: 3;
+  top: 0.6rem;
+  left: 0.6rem;
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+}
+
+.laboratory-metric-evidence-scene__toolbar .nodedc-button,
+.laboratory-metric-evidence-scene__toolbar > span,
+.laboratory-metric-evidence-scene__legend {
+  background: var(--nodedc-floating-surface);
+  backdrop-filter: blur(var(--nodedc-blur-control));
+}
+
+.laboratory-metric-evidence-scene__toolbar > span {
+  border-radius: var(--nodedc-radius-control-compact);
+  padding: 0.43rem 0.55rem;
+  color: var(--nodedc-text-secondary);
+  font-size: 0.5rem;
+}
+
+.laboratory-metric-evidence-scene__legend {
+  position: absolute;
+  z-index: 3;
+  right: 0.6rem;
+  bottom: 0.6rem;
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.55rem;
+  border-radius: var(--nodedc-radius-control-compact);
+  padding: 0.42rem 0.55rem;
+  color: var(--nodedc-text-secondary);
+}
+
+.laboratory-metric-evidence-scene__legend span {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.25rem;
+  font-size: 0.5rem;
+}
+
+.laboratory-metric-evidence-scene__legend span::before {
+  width: 0.38rem;
+  height: 0.38rem;
+  border-radius: 50%;
+  background: var(--nodedc-text-muted);
+  content: "";
+}
+
+.laboratory-metric-evidence-scene__legend span[data-decision="threat"]::before {
+  background: rgb(var(--nodedc-danger-rgb));
+}
+
+.laboratory-metric-evidence-scene__legend span[data-decision="not-threat"]::before {
+  background: rgb(var(--nodedc-success-rgb));
+}
+
+.laboratory-metric-evidence-scene__legend span[data-decision="unknown"]::before {
+  background: rgb(var(--nodedc-warning-rgb));
+}
+
+@media (max-width: 900px) {
+  .laboratory-metric-evidence-scene__toolbar > span {
+    display: none;
+  }
+}
diff --git a/apps/control-station/src/workspaces/laboratory/AdvancedLaboratoryResult.tsx b/apps/control-station/src/workspaces/laboratory/AdvancedLaboratoryResult.tsx
index 56ea6de..c240c4e 100644
--- a/apps/control-station/src/workspaces/laboratory/AdvancedLaboratoryResult.tsx
+++ b/apps/control-station/src/workspaces/laboratory/AdvancedLaboratoryResult.tsx
@@ -39,6 +39,7 @@ import { E46GRectifiedDetectorBakeoffResultView } from "./E46GRectifiedDetectorB
 import { E46HFullRectifiedFrontReplayResultView } from "./E46HFullRectifiedFrontReplayResult";
 import { E46IGroundingDinoFullReplayResultView } from "./E46IGroundingDinoFullReplayResult";
 import { E46JRawFisheyeRealtimeResultView } from "./E46JRawFisheyeRealtimeResult";
+import { M4ReplayThreatResultView } from "./M4ReplayThreatResult";
 
 export { isAdvancedLaboratoryWorkId };
 export type { AdvancedLaboratoryWorkId };
@@ -81,6 +82,9 @@ export function AdvancedLaboratoryResult({
   failedSessionId: string | null;
   replayError: string | null;
 }) {
+  if (workId === "m4-replay-threat" && results.m4Threat) {
+    return <M4ReplayThreatResultView rigLabel={rigLabel} result={results.m4Threat} />;
+  }
   if (workId === "l3-pointpillars-visual-audit" && results.l3) {
     return <L3PointPillarsResult result={results.l3} />;
   }
diff --git a/apps/control-station/src/workspaces/laboratory/E46CRecordedVideoScene.tsx b/apps/control-station/src/workspaces/laboratory/E46CRecordedVideoScene.tsx
index 6cacb9c..c884362 100644
--- a/apps/control-station/src/workspaces/laboratory/E46CRecordedVideoScene.tsx
+++ b/apps/control-station/src/workspaces/laboratory/E46CRecordedVideoScene.tsx
@@ -1,9 +1,12 @@
-import { useEffect, useMemo, useRef } from "react";
+import { useMemo } from "react";
 
 import {
-  RecordedFmp4Player,
   type RecordedObservationPlayback,
 } from "../../components/RecordedFmp4Player";
+import {
+  RecordedEvidenceVideoScene,
+  type RecordedEvidenceBox,
+} from "../../components/laboratory/RecordedEvidenceVideoScene";
 import {
   selectE46CVideoFrame,
   type E46CMotionState,
@@ -11,26 +14,10 @@ import {
 } from "../../core/laboratory/e46cFullReplayWorldTracks";
 import type { ObservationSourceDescriptor } from "../../core/runtime/contracts";
 
-function color(
-  host: HTMLElement,
-  token: string,
-  fallback: readonly [number, number, number],
-  alpha = 1,
-): string {
-  const channels = getComputedStyle(host)
-    .getPropertyValue(token)
-    .trim()
-    .match(/[\d.]+/g)
-    ?.slice(0, 3)
-    .map(Number);
-  const [red, green, blue] = channels?.length === 3 ? channels : fallback;
-  return `rgba(${red}, ${green}, ${blue}, ${alpha})`;
-}
-
-function stateColor(host: HTMLElement, state: E46CMotionState): string {
-  if (state === "dynamic") return color(host, "--nodedc-accent-rgb", [232, 56, 126]);
-  if (state === "static") return color(host, "--nodedc-success-rgb", [181, 255, 90]);
-  return color(host, "--nodedc-warning-rgb", [255, 197, 92]);
+function stateTone(state: E46CMotionState): RecordedEvidenceBox["tone"] {
+  if (state === "dynamic") return "accent";
+  if (state === "static") return "success";
+  return "warning";
 }
 
 function stateLabel(state: E46CMotionState): string {
@@ -50,97 +37,40 @@ export function E46CRecordedVideoScene({
   playback: RecordedObservationPlayback;
   onPlaybackChange: (playback: RecordedObservationPlayback) => void;
 }) {
-  const hostRef = useRef<HTMLDivElement | null>(null);
-  const canvasRef = useRef<HTMLCanvasElement | null>(null);
   const frame = useMemo(
     () => selectE46CVideoFrame(overlay.frames, playback.currentSeconds),
     [overlay.frames, playback.currentSeconds],
   );
 
-  useEffect(() => {
-    const host = hostRef.current;
-    const canvas = canvasRef.current;
-    if (!host || !canvas) return;
-    const context = canvas.getContext("2d");
-    if (!context) return;
-    const render = () => {
-      const width = Math.max(host.clientWidth, 1);
-      const height = Math.max(host.clientHeight, 1);
-      const pixelRatio = Math.min(window.devicePixelRatio, 1.5);
-      canvas.width = Math.round(width * pixelRatio);
-      canvas.height = Math.round(height * pixelRatio);
-      canvas.style.width = `${width}px`;
-      canvas.style.height = `${height}px`;
-      context.setTransform(pixelRatio, 0, 0, pixelRatio, 0, 0);
-      context.clearRect(0, 0, width, height);
-      if (!frame) return;
-
-      const scale = Math.min(
-        width / overlay.imageWidth,
-        height / overlay.imageHeight,
-      );
-      const drawWidth = overlay.imageWidth * scale;
-      const drawHeight = overlay.imageHeight * scale;
-      const offsetX = (width - drawWidth) / 2;
-      const offsetY = (height - drawHeight) / 2;
-      for (const item of frame.objects) {
-        const [left, top, right, bottom] = item.boxXyxy;
-        const x = offsetX + left * scale;
-        const y = offsetY + top * scale;
-        const boxWidth = (right - left) * scale;
-        const boxHeight = (bottom - top) * scale;
-        const stroke = stateColor(host, item.motionState);
-        context.strokeStyle = stroke;
-        context.lineWidth = Math.max(1.5, 2 * scale);
-        context.setLineDash(item.cameraEvidenceCurrent ? [] : [5, 4]);
-        context.strokeRect(x, y, boxWidth, boxHeight);
-        context.setLineDash([]);
-
-        const identity = `S${item.routeTrackId}${
-          item.worldTrackId === null ? "" : `→W${item.worldTrackId}`
-        }`;
-        const label = `${identity} · ${item.displayCategory} · ${stateLabel(
+  const boxes = useMemo<readonly RecordedEvidenceBox[]>(() => (
+    frame?.objects.map((item) => {
+      const identity = `S${item.routeTrackId}${
+        item.worldTrackId === null ? "" : `→W${item.worldTrackId}`
+      }`;
+      return {
+        boxXyxy: item.boxXyxy,
+        label: `${identity} · ${item.displayCategory} · ${stateLabel(
           item.motionState,
-        )} · ${Math.round(item.score * 100)}%`;
-        const fontSize = Math.max(9, 10 * scale);
-        context.font = `650 ${fontSize}px Inter, system-ui, sans-serif`;
-        const labelWidth = context.measureText(label).width + 8;
-        const labelHeight = fontSize + 6;
-        const labelX = Math.min(
-          offsetX + drawWidth - labelWidth,
-          Math.max(offsetX, x),
-        );
-        const labelY = Math.max(offsetY, y - labelHeight);
-        context.fillStyle = color(host, "--nodedc-canvas-rgb", [5, 5, 6], 0.9);
-        context.fillRect(labelX, labelY, labelWidth, labelHeight);
-        context.fillStyle = stroke;
-        context.fillText(label, labelX + 4, labelY + fontSize + 1);
-      }
-    };
-    const observer = new ResizeObserver(render);
-    observer.observe(host);
-    render();
-    return () => observer.disconnect();
-  }, [frame, overlay.imageHeight, overlay.imageWidth]);
+        )} · ${Math.round(item.score * 100)}%`,
+        tone: stateTone(item.motionState),
+        dashed: !item.cameraEvidenceCurrent,
+      };
+    }) ?? []
+  ), [frame]);
 
   return (
-    <div className="e46c-video-scene" ref={hostRef}>
-      <RecordedFmp4Player
-        source={source}
-        playback={playback}
-        interactive
-        prepare
-        onPlaybackChange={onPlaybackChange}
-      />
-      <canvas
-        ref={canvasRef}
-        role="img"
-        aria-label={
-          frame
-            ? `E46C video frame ${frame.frameIndex}: ${frame.objects.length} route objects`
-            : "E46C recorded video overlay"
-        }
-      />
-    </div>
+    <RecordedEvidenceVideoScene
+      source={source}
+      playback={playback}
+      imageWidth={overlay.imageWidth}
+      imageHeight={overlay.imageHeight}
+      boxes={boxes}
+      ariaLabel={
+        frame
+          ? `E46C video frame ${frame.frameIndex}: ${frame.objects.length} route objects`
+          : "E46C recorded video overlay"
+      }
+      onPlaybackChange={onPlaybackChange}
+    />
   );
 }
diff --git a/apps/control-station/src/workspaces/laboratory/M4ReplayThreatResult.tsx b/apps/control-station/src/workspaces/laboratory/M4ReplayThreatResult.tsx
new file mode 100644
index 0000000..4406b6a
--- /dev/null
+++ b/apps/control-station/src/workspaces/laboratory/M4ReplayThreatResult.tsx
@@ -0,0 +1,138 @@
+import {
+  LaboratoryEvidence,
+  LaboratoryResultSummary,
+  LaboratorySummary,
+  LaboratoryWorkTemplate,
+} from "../../components/laboratory/LaboratoryPresentation";
+import type { M4ThreatReplayResult } from "../../core/laboratory/m4ReplayThreat";
+import { formatNumber } from "../../presentation";
+import { M4ReplayThreatVisual } from "./M4ReplayThreatVisual";
+
+export function M4ReplayThreatResultView({
+  rigLabel,
+  result,
+}: {
+  rigLabel: string;
+  result: M4ThreatReplayResult;
+}) {
+  const metrics = result.metrics;
+  const totalAssessments = Object.values(metrics.decisions).reduce(
+    (sum, value) => sum + value,
+    0,
+  );
+  return (
+    <LaboratoryWorkTemplate
+      summary={(
+        <LaboratorySummary
+          title="M4.6 · dual-evidence threat replay"
+          description="Camera и LiDAR дают независимые доказательства, после чего один source-neutral слой оценивает пересечение виртуального коридора, ближайшее сближение и TTC. Ни один сенсор не назначен first."
+          status="4489/4489 · replay-simulated · accepted"
+          statusTone="warning"
+          facts={[
+            {
+              label: "Конфигурация",
+              value: `${rigLabel} · RIGHT camera + LiDAR geometry · recorded replay`,
+            },
+            {
+              label: "Виртуальный корпус",
+              value: `${result.configuration.virtualBodyM[0]}×${result.configuration.virtualBodyM[1]} м · LiDAR ${result.configuration.nominalSensorHeightM} м`,
+            },
+            {
+              label: "Коридор",
+              value: `${result.configuration.forwardCorridorM} м · horizon ${result.configuration.predictionHorizonSeconds} с`,
+            },
+            {
+              label: "Визуал",
+              value: "4489-frame VIDEO · 32 exact CAMERA/3D/PLAN samples",
+            },
+          ]}
+          brief={{
+            question: "Может ли единый слой обнаруживать потенциальное препятствие по двум независимым источникам, не теряя LiDAR-only объекты и не объявляя camera-only наблюдение безопасным?",
+            approach: "Все 4489 кадров RAVNOVES00 повторно пропущены через неизменяемые detector, metric geometry и temporal ledgers. Geometry-only объекты получают метрическую оценку; camera-only и stale/held остаются unknown. Отдельная матрица из 9 детерминированных сценариев проверяет статические, сближающиеся и расходящиеся случаи.",
+            principalResult: `${metrics.evidence.currentMetric.toLocaleString("ru-RU")} current metric и ${metrics.evidence.cameraOnly.toLocaleString("ru-RU")} camera-only наблюдений учтены; ${metrics.reasonCounts["geometry-only-evidence"]?.toLocaleString("ru-RU") ?? "0"} geometry-only оценок не потеряны. Критические fixtures: ${metrics.fixtures.passed}/${metrics.fixtures.total}, ложных safe: ${metrics.fixtures.criticalFalseNotThreat}.`,
+            limitation: "Корпус и коридор пока виртуальные, replay не является live-проходом или физическим collision test. Постоянная скорость — ограниченная модель, а independent object truth остаётся следующим gate.",
+          }}
+          method={{
+            completeness: "complete",
+            executionClass: "hybrid",
+            pipelineId: "dual-evidence-replay-threat/v1",
+            components: [
+              {
+                kind: "source",
+                name: result.sourceResultIds.detector,
+                version: "frozen camera proposals",
+                role: "независимое image-space evidence без safety authority",
+                identitySha256: result.sourceResultIds.detector.split("-").at(-1) ?? null,
+              },
+              {
+                kind: "source",
+                name: result.sourceResultIds.geometry,
+                version: "frozen metric geometry",
+                role: "LiDAR occupied components и camera association",
+                identitySha256: result.sourceResultIds.geometry.split("-").at(-1) ?? null,
+              },
+              {
+                kind: "source",
+                name: result.sourceResultIds.temporal,
+                version: "frozen temporal object map",
+                role: "current / held / expired и bounded motion history",
+                identitySha256: result.sourceResultIds.temporal.split("-").at(-1) ?? null,
+              },
+              {
+                kind: "algorithm",
+                name: "dual-evidence virtual corridor",
+                version: result.profileId,
+                role: "classless corridor intersection, closest approach and TTC",
+                identitySha256: result.resultId.split("-").at(-1) ?? null,
+              },
+            ],
+          }}
+        />
+      )}
+      evidence={(
+        <LaboratoryEvidence
+          eyebrow="M4.6 VISUAL EVIDENCE · VIDEO / CAMERA / 3D / PLAN"
+          title="Синхронный контроль рамок, расстояний, облака точек и виртуального коридора"
+          kind="diagnostic-model"
+          resizable
+        >
+          <M4ReplayThreatVisual resultId={result.resultId} />
+        </LaboratoryEvidence>
+      )}
+      result={(
+        <LaboratoryResultSummary
+          title="Dual-evidence слой готов к следующей CV-итерации на recorded replay"
+          status="Replay gate accepted · physical authority withheld"
+          statusTone="warning"
+          metrics={[
+            {
+              label: "Replay frames",
+              value: "4489/4489",
+              hint: `${formatNumber(metrics.runtime.framesPerSecond, 1)} FPS offline`,
+            },
+            {
+              label: "Metric evidence",
+              value: metrics.evidence.currentMetric.toLocaleString("ru-RU"),
+              hint: `${metrics.reasonCounts["geometry-only-evidence"]?.toLocaleString("ru-RU") ?? "0"} geometry-only`,
+            },
+            {
+              label: "Threat / clear",
+              value: `${metrics.decisions.threat.toLocaleString("ru-RU")} / ${metrics.decisions["not-threat"].toLocaleString("ru-RU")}`,
+              hint: `${totalAssessments.toLocaleString("ru-RU")} assessments accounted`,
+            },
+            {
+              label: "Critical false-safe",
+              value: String(metrics.fixtures.criticalFalseNotThreat),
+              hint: `${metrics.fixtures.passed}/${metrics.fixtures.total} deterministic fixtures passed`,
+            },
+          ]}
+          conclusion={{
+            proved: "На неизменяемом RAVNOVES00 каждый metric, stale/held и camera-only объект получил ровно одну консервативную оценку. Geometry-only препятствия участвуют в threat-решении без класса, camera-only и просроченные данные не превращаются в safe. Видео, точные camera samples и метрическое 3D-доказательство доступны в одном viewer.",
+            notProved: "Не доказаны live realtime, измеренная геометрия физического корпуса, независимая object-level правильность, навигационная или safety-пригодность и выдача команд.",
+            decision: "Сохранить dual-evidence provider как канонический replay seam и переходить к независимому object-centric gate; физическую геометрию и live/actuation authority не смешивать с дальнейшей CV-разработкой.",
+          }}
+        />
+      )}
+    />
+  );
+}
diff --git a/apps/control-station/src/workspaces/laboratory/M4ReplayThreatVisual.tsx b/apps/control-station/src/workspaces/laboratory/M4ReplayThreatVisual.tsx
new file mode 100644
index 0000000..59ef8f5
--- /dev/null
+++ b/apps/control-station/src/workspaces/laboratory/M4ReplayThreatVisual.tsx
@@ -0,0 +1,385 @@
+import { useEffect, useMemo, useState } from "react";
+import { Icon, IconButton, Select } from "@nodedc/ui-react";
+
+import type { RecordedObservationPlayback } from "../../components/RecordedFmp4Player";
+import {
+  LaboratoryMetricEvidenceScene,
+  type LaboratoryMetricSceneMode,
+} from "../../components/laboratory/LaboratoryMetricEvidenceScene";
+import { LaboratoryEvidenceViewer } from "../../components/laboratory/LaboratoryEvidenceViewer";
+import {
+  RecordedEvidenceVideoScene,
+  type RecordedEvidenceBox,
+} from "../../components/laboratory/RecordedEvidenceVideoScene";
+import {
+  fetchM4ThreatVideoOverlay,
+  fetchM4ThreatVisual,
+  fetchM4ThreatVisualIndex,
+  selectM4ThreatVideoFrame,
+  type M4ThreatCameraProposal,
+  type M4ThreatVideoOverlay,
+  type M4ThreatVisualFrame,
+  type M4ThreatVisualIndexItem,
+} from "../../core/laboratory/m4ReplayThreat";
+import { recordedObservationSources } from "../../core/observation/recordedObservationSources";
+import { replayObservationSession } from "../../core/observation/sessionArchive";
+import type { ObservationSourceDescriptor } from "../../core/runtime/contracts";
+
+type M4ThreatViewMode = "video" | "camera" | LaboratoryMetricSceneMode;
+
+function toneForProposal(proposal: M4ThreatCameraProposal): RecordedEvidenceBox["tone"] {
+  if (proposal.threatDecision === "threat") return "danger";
+  if (proposal.threatDecision === "not-threat") return "success";
+  if (proposal.threatDecision === "unknown") return "warning";
+  return proposal.occupiedSupport ? "accent" : "warning";
+}
+
+function proposalLabel(proposal: M4ThreatCameraProposal): string {
+  const decision = proposal.threatDecision ?? "unknown";
+  if (proposal.rangeM === null) return decision;
+  const range = `${proposal.rangeM.toLocaleString("ru-RU", { maximumFractionDigits: 2 })} м`;
+  return `${range} · ${decision}`;
+}
+
+function boxes(proposals: readonly M4ThreatCameraProposal[]): readonly RecordedEvidenceBox[] {
+  return proposals.map((proposal) => ({
+    boxXyxy: proposal.bboxXyxy,
+    label: proposalLabel(proposal),
+    tone: toneForProposal(proposal),
+    dashed: !proposal.occupiedSupport,
+  }));
+}
+
+function message(error: unknown, fallback: string): string {
+  return error instanceof Error && error.message.trim() ? error.message : fallback;
+}
+
+export function M4ReplayThreatVisual({ resultId }: { resultId: string }) {
+  const [mode, setMode] = useState<M4ThreatViewMode>("video");
+  const [expanded, setExpanded] = useState(false);
+  const [index, setIndex] = useState<readonly M4ThreatVisualIndexItem[]>([]);
+  const [ordinal, setOrdinal] = useState(1);
+  const [frame, setFrame] = useState<M4ThreatVisualFrame | null>(null);
+  const [sampleLoading, setSampleLoading] = useState(true);
+  const [sampleError, setSampleError] = useState<string | null>(null);
+  const [videoOverlay, setVideoOverlay] = useState<M4ThreatVideoOverlay | null>(null);
+  const [videoSource, setVideoSource] = useState<ObservationSourceDescriptor | null>(null);
+  const [videoLoading, setVideoLoading] = useState(false);
+  const [videoError, setVideoError] = useState<string | null>(null);
+  const [videoPlayback, setVideoPlayback] = useState<RecordedObservationPlayback>({
+    currentSeconds: 0,
+    playing: false,
+  });
+
+  useEffect(() => {
+    const controller = new AbortController();
+    setSampleLoading(true);
+    setSampleError(null);
+    void fetchM4ThreatVisualIndex(resultId, { signal: controller.signal })
+      .then((items) => {
+        if (!controller.signal.aborted) setIndex(items);
+      })
+      .catch((caught: unknown) => {
+        if (!controller.signal.aborted) {
+          setSampleError(message(caught, "Индекс визуальных кадров M4.6 недоступен."));
+        }
+      });
+    return () => controller.abort();
+  }, [resultId]);
+
+  useEffect(() => {
+    const controller = new AbortController();
+    setSampleLoading(true);
+    setSampleError(null);
+    setFrame(null);
+    void fetchM4ThreatVisual(resultId, ordinal, { signal: controller.signal })
+      .then((next) => {
+        if (!controller.signal.aborted) setFrame(next);
+      })
+      .catch((caught: unknown) => {
+        if (!controller.signal.aborted) {
+          setSampleError(message(caught, "Метрический visual M4.6 недоступен."));
+        }
+      })
+      .finally(() => {
+        if (!controller.signal.aborted) setSampleLoading(false);
+      });
+    return () => controller.abort();
+  }, [ordinal, resultId]);
+
+  useEffect(() => {
+    if ((mode !== "video" && mode !== "camera") || (videoOverlay && videoSource)) return;
+    const controller = new AbortController();
+    setVideoLoading(true);
+    setVideoError(null);
+    void (async () => {
+      const overlay = await fetchM4ThreatVideoOverlay(resultId, {
+        signal: controller.signal,
+      });
+      const replay = await replayObservationSession(overlay.recordedSourceSessionId, {
+        signal: controller.signal,
+      });
+      if (replay.kind !== "ready") {
+        throw new Error("RIGHT-видео RAVNOVES00 ещё готовится к воспроизведению.");
+      }
+      const source = recordedObservationSources(replay.launch).find(
+        (candidate) =>
+          candidate.modality === "video" &&
+          candidate.semanticChannelId === "camera.video.recorded",
+      );
+      const delivery = source?.delivery?.kind === "recorded-fmp4-manifest"
+        ? source.delivery
+        : null;
+      if (
+        !source ||
+        !delivery ||
+        delivery.timelineStartSeconds !== overlay.timelineStartSeconds ||
+        delivery.timelineEndSeconds < overlay.timelineEndSeconds
+      ) {
+        throw new Error("RIGHT-видео не совпало с временным контрактом M4.6.");
+      }
+      if (controller.signal.aborted) return;
+      setVideoOverlay(overlay);
+      setVideoSource(source);
+      setVideoPlayback({
+        currentSeconds: overlay.timelineStartSeconds,
+        playing: false,
+      });
+    })()
+      .catch((caught: unknown) => {
+        if (!controller.signal.aborted) {
+          setVideoError(message(caught, "Видео-доказательство M4.6 недоступно."));
+        }
+      })
+      .finally(() => {
+        if (!controller.signal.aborted) setVideoLoading(false);
+      });
+    return () => controller.abort();
+  }, [mode, resultId, videoOverlay, videoSource]);
+
+  useEffect(() => {
+    if (mode !== "camera" || !frame) return;
+    setVideoPlayback({
+      currentSeconds: frame.sourceTimeNs / 1_000_000_000,
+      playing: false,
+    });
+  }, [frame, mode]);
+
+  const activeVideoFrame = useMemo(
+    () => videoOverlay
+      ? selectM4ThreatVideoFrame(videoOverlay.frames, videoPlayback.currentSeconds)
+      : null,
+    [videoOverlay, videoPlayback.currentSeconds],
+  );
+  const activeProposals = mode === "camera"
+    ? frame?.cameraProposals ?? []
+    : activeVideoFrame?.cameraProposals ?? [];
+  const activeBoxes = useMemo(() => boxes(activeProposals), [activeProposals]);
+  const selectedItem = index.find((item) => item.ordinal === ordinal) ?? null;
+  const threatObstacles = frame?.metricObstacles.filter(
+    (item) => item.assessment.decision === "threat",
+  ) ?? [];
+  const nearest = frame?.metricObstacles
+    .map((item) => item.assessment.closestApproachM)
+    .filter((value): value is number => value !== null)
+    .sort((left, right) => left - right)[0] ?? null;
+
+  const seekVideo = (seconds: number) => {
+    if (!videoOverlay) return;
+    setVideoPlayback({
+      currentSeconds: Math.min(
+        videoOverlay.timelineEndSeconds,
+        Math.max(videoOverlay.timelineStartSeconds, seconds),
+      ),
+      playing: false,
+    });
+  };
+  const navigate = (offset: -1 | 1) => {
+    const count = Math.max(index.length, 32);
+    setOrdinal((current) => ((current - 1 + offset + count) % count) + 1);
+  };
+
+  const actions = mode === "video" ? (
+    <div className="l3-visual-audit__actions">
+      <div className="l3-visual-audit__pagination">
+        <IconButton label="Назад на 5 секунд" onClick={() => seekVideo(videoPlayback.currentSeconds - 5)}>
+          <Icon name="chevron-left" size={16} />
+        </IconButton>
+        <IconButton label="Вперёд на 5 секунд" onClick={() => seekVideo(videoPlayback.currentSeconds + 5)}>
+          <Icon name="chevron-right" size={16} />
+        </IconButton>
+      </div>
+      <Select
+        label="Перейти к метрическому sample M4.6"
+        value={String(ordinal)}
+        options={(index.length ? index : Array.from({ length: 32 }, (_, position) => ({
+          ordinal: position + 1,
+          sequence: position,
+          frameId: "",
+          sourceTimeNs: 0,
+          metricObstacleCount: 0,
+          cameraProposalCount: 0,
+          pointCloudSampleCount: 0,
+        }))).map((item) => ({
+          value: String(item.ordinal),
+          label: `${item.ordinal}/32 · frame ${item.sequence} · ${item.metricObstacleCount} metric objects`,
+        }))}
+        variant="split"
+        menuWidth="anchor"
+        searchable
+        searchPlaceholder="Найти sample"
+        onChange={(value) => {
+          const nextOrdinal = Number(value);
+          const target = index.find((item) => item.ordinal === nextOrdinal);
+          setOrdinal(nextOrdinal);
+          if (target) seekVideo(target.sourceTimeNs / 1_000_000_000);
+        }}
+      />
+    </div>
+  ) : (
+    <div className="l3-visual-audit__actions">
+      <div className="l3-visual-audit__pagination">
+        <IconButton label="Предыдущий sample M4.6" onClick={() => navigate(-1)}>
+          <Icon name="chevron-left" size={16} />
+        </IconButton>
+        <IconButton label="Следующий sample M4.6" onClick={() => navigate(1)}>
+          <Icon name="chevron-right" size={16} />
+        </IconButton>
+      </div>
+      <Select
+        label="Выбрать sample M4.6"
+        value={String(ordinal)}
+        options={index.map((item) => ({
+          value: String(item.ordinal),
+          label: `${item.ordinal}/32 · frame ${item.sequence} · ${item.metricObstacleCount} metric · ${item.cameraProposalCount} camera`,
+        }))}
+        variant="split"
+        menuWidth="anchor"
+        searchable
+        searchPlaceholder="Найти sample"
+        onChange={(value) => setOrdinal(Number(value))}
+      />
+    </div>
+  );
+
+  const overlay = mode === "video" && videoOverlay ? (
+    <div className="l3-visual-audit__overlay l3-visual-audit__overlay--video">
+      <div>
+        <span>RAVNOVES00 · recorded RIGHT</span>
+        <strong>
+          +{(videoPlayback.currentSeconds - videoOverlay.timelineStartSeconds).toFixed(1)} с
+          {activeVideoFrame ? ` · frame ${activeVideoFrame.frameIndex}` : ""}
+        </strong>
+        <small>{videoPlayback.playing ? "воспроизведение" : "пауза / seek"}</small>
+      </div>
+      <div>
+        <span>Camera evidence</span>
+        <strong>{activeVideoFrame?.cameraProposals.length ?? 0} рамок · distance при LiDAR support</strong>
+        <small>пунктир = camera-only · всегда unknown</small>
+      </div>
+      <div>
+        <span>Replay decision</span>
+        <strong>
+          {activeVideoFrame?.decisionCounts.threat ?? 0} threat · {activeVideoFrame?.decisionCounts["not-threat"] ?? 0} clear · {activeVideoFrame?.decisionCounts.unknown ?? 0} unknown
+        </strong>
+        <small>REPLAY-SIMULATED · не live и не safety authority</small>
+      </div>
+    </div>
+  ) : frame ? (
+    <div className="l3-visual-audit__overlay">
+      <div>
+        <span>RAVNOVES00 · exact replay sample</span>
+        <strong>frame {frame.sequence} · sample {frame.ordinal}/32</strong>
+        <small>{(frame.sourceTimeNs / 1_000_000_000).toFixed(3)} с · {selectedItem?.frameId}</small>
+      </div>
+      <div>
+        <span>Dual evidence</span>
+        <strong>{frame.metricObstacles.length} metric · {frame.cameraProposals.length} camera</strong>
+        <small>{frame.pointCloudSampleCount}/{frame.pointCloudSourceCount} LiDAR points shown</small>
+      </div>
+      <div>
+        <span>Virtual corridor</span>
+        <strong>{threatObstacles.length} threat · nearest {nearest === null ? "—" : `${nearest.toFixed(2)} м`}</strong>
+        <small>{frame.corridor.forwardLengthM} м · body {frame.rig.lengthM}×{frame.rig.widthM} м · REPLAY-SIMULATED</small>
+      </div>
+    </div>
+  ) : undefined;
+
+  let content;
+  if (mode === "video" || mode === "camera") {
+    content = videoLoading ? (
+      <div className="l3-visual-audit__state" role="status">
+        <span className="busy-indicator" aria-hidden="true" />
+        <span>Связываем 4489 решений M4.6 с RIGHT-видео</span>
+      </div>
+    ) : videoError || !videoOverlay || !videoSource ? (
+      <div className="l3-visual-audit__state" role="status">
+        <Icon name="alert" size={18} />
+        <span>{videoError ?? "Видео-доказательство M4.6 недоступно."}</span>
+      </div>
+    ) : (
+      <RecordedEvidenceVideoScene
+        source={videoSource}
+        playback={videoPlayback}
+        imageWidth={videoOverlay.imageWidth}
+        imageHeight={videoOverlay.imageHeight}
+        boxes={activeBoxes}
+        ariaLabel={
+          mode === "camera"
+            ? `M4.6 exact camera sample ${ordinal}: ${activeBoxes.length} proposals`
+            : `M4.6 full video frame ${activeVideoFrame?.frameIndex ?? 0}: ${activeBoxes.length} proposals`
+        }
+        onPlaybackChange={setVideoPlayback}
+      />
+    );
+  } else {
+    content = sampleLoading ? (
+      <div className="l3-visual-audit__state" role="status">
+        <span className="busy-indicator" aria-hidden="true" />
+        <span>Открываем синхронное облако точек M4.6</span>
+      </div>
+    ) : sampleError || !frame ? (
+      <div className="l3-visual-audit__state" role="status">
+        <Icon name="alert" size={18} />
+        <span>{sampleError ?? "Метрический visual M4.6 недоступен."}</span>
+      </div>
+    ) : (
+      <LaboratoryMetricEvidenceScene
+        pointCloudBodyXyzM={frame.pointCloudBodyXyzM}
+        obstacles={frame.metricObstacles.map((obstacle) => ({
+          id: obstacle.componentId,
+          decision: obstacle.assessment.decision,
+          state: obstacle.state,
+          centroidBodyXyzM: obstacle.centroidBodyXyzM,
+          cellCentersBodyXyzM: obstacle.cellCentersBodyXyzM,
+        }))}
+        rig={frame.rig}
+        corridor={frame.corridor}
+        mode={mode}
+        label={`M4.6 metric point cloud, frame ${frame.sequence}`}
+      />
+    );
+  }
+
+  return (
+    <div className="l3-visual-audit m4-replay-threat-visual">
+      <LaboratoryEvidenceViewer
+        label="M4.6 dual-evidence replay: video, camera and metric 3D"
+        mode={mode}
+        modes={[
+          { value: "video", label: "VIDEO" },
+          { value: "camera", label: "CAMERA" },
+          { value: "3d", label: "3D" },
+          { value: "plan", label: "PLAN" },
+        ]}
+        expanded={expanded}
+        onModeChange={setMode}
+        onExpandedChange={setExpanded}
+        actions={actions}
+        overlay={overlay}
+      >
+        {content}
+      </LaboratoryEvidenceViewer>
+    </div>
+  );
+}
diff --git a/apps/control-station/src/workspaces/laboratory/laboratoryArchiveProfiles.ts b/apps/control-station/src/workspaces/laboratory/laboratoryArchiveProfiles.ts
index 4a19245..0a597e8 100644
--- a/apps/control-station/src/workspaces/laboratory/laboratoryArchiveProfiles.ts
+++ b/apps/control-station/src/workspaces/laboratory/laboratoryArchiveProfiles.ts
@@ -6,6 +6,7 @@ import type {
 import type { ObservationSessionSummary } from "../../core/observation/sessionArchive";
 
 export type LaboratoryProfileId =
+  | "rig-dual-evidence-virtual-corridor-v1"
   | "rig-camera-local-surface-v1"
   | "rig-track-geometry-temporal-v1"
   | "rig-ravnoves-perception-gate-v1"
@@ -56,6 +57,13 @@ interface KnownWorkDefinition {
 const rig = (rigLabel: string): string => rigLabel.trim() || "Сенсорный риг";
 
 const KNOWN_WORKS: Readonly<Record<Exclude<LaboratoryWorkId, `session:${string}`>, KnownWorkDefinition>> = {
+  "m4-replay-threat": {
+    profileId: "rig-dual-evidence-virtual-corridor-v1",
+    profileName: (rigLabel) => `${rig(rigLabel)} RIGHT · Camera + LiDAR dual evidence`,
+    experimentId: "m4-ravnoves00-dual-evidence-threat",
+    experimentName: "RAVNOVES00 dual-evidence threat qualification",
+    variantName: "M4.6 · virtual corridor replay · VIDEO/CAMERA/3D",
+  },
   "e28-local-surface": {
     profileId: "rig-camera-local-surface-v1",
     profileName: (rigLabel) => `${rig(rigLabel)} RIGHT · Camera-first + local-surface LiDAR`,
diff --git a/apps/control-station/src/workspaces/laboratory/useAdvancedLaboratoryCatalog.ts b/apps/control-station/src/workspaces/laboratory/useAdvancedLaboratoryCatalog.ts
index d5bbd88..ab8fc46 100644
--- a/apps/control-station/src/workspaces/laboratory/useAdvancedLaboratoryCatalog.ts
+++ b/apps/control-station/src/workspaces/laboratory/useAdvancedLaboratoryCatalog.ts
@@ -18,6 +18,7 @@ function mergeResults(
   next: AdvancedLaboratoryResults,
 ): AdvancedLaboratoryResults {
   return {
+    m4Threat: next.m4Threat ?? current.m4Threat,
     l3: next.l3 ?? current.l3,
     l31: next.l31 ?? current.l31,
     l32: next.l32 ?? current.l32,
diff --git a/apps/control-station/test/e46cVideoReplay.test.mjs b/apps/control-station/test/e46cVideoReplay.test.mjs
index 585046e..7203665 100644
--- a/apps/control-station/test/e46cVideoReplay.test.mjs
+++ b/apps/control-station/test/e46cVideoReplay.test.mjs
@@ -91,8 +91,8 @@ test("E46C decodes the complete path-free temporal video overlay", async () => {
   assert.equal(selectE46CVideoFrame(overlay.frames, overlay.frames[20].sessionSeconds).frameIndex, 20);
 });
 
-test("E46C viewer opens with full VIDEO and reuses the admitted recorded player", async () => {
-  const [visual, videoScene, player] = await Promise.all([
+test("E46C viewer opens with full VIDEO and reuses the shared recorded overlay scene", async () => {
+  const [visual, videoScene, sharedScene, player] = await Promise.all([
     readFile(
       new URL(
         "../src/workspaces/laboratory/E46CFullReplayWorldTracksVisual.tsx",
@@ -107,14 +107,22 @@ test("E46C viewer opens with full VIDEO and reuses the admitted recorded player"
       ),
       "utf8",
     ),
+    readFile(
+      new URL(
+        "../src/components/laboratory/RecordedEvidenceVideoScene.tsx",
+        import.meta.url,
+      ),
+      "utf8",
+    ),
     readFile(new URL("../src/components/RecordedFmp4Player.tsx", import.meta.url), "utf8"),
   ]);
 
   assert.match(visual, /useState<E46CViewMode>\("video"\)/);
   assert.match(visual, /\{ value: "video", label: "VIDEO" \}/);
   assert.match(visual, /replayObservationSession\(overlay\.recordedSourceSessionId/);
-  assert.match(videoScene, /<RecordedFmp4Player/);
+  assert.match(videoScene, /<RecordedEvidenceVideoScene/);
   assert.match(videoScene, /selectE46CVideoFrame/);
+  assert.match(sharedScene, /<RecordedFmp4Player/);
   assert.match(player, /requestVideoFrameCallback/);
   assert.match(player, /controls=\{interactive\}/);
 });
diff --git a/apps/control-station/test/m4ReplayThreat.test.mjs b/apps/control-station/test/m4ReplayThreat.test.mjs
new file mode 100644
index 0000000..e574e0d
--- /dev/null
+++ b/apps/control-station/test/m4ReplayThreat.test.mjs
@@ -0,0 +1,187 @@
+import assert from "node:assert/strict";
+import { readFile } from "node:fs/promises";
+import { after, before, test } from "node:test";
+
+import { createServer } from "vite";
+
+let server;
+let fetchM4ThreatReplayResult;
+let fetchM4ThreatVisual;
+let fetchM4ThreatVideoOverlay;
+let selectM4ThreatVideoFrame;
+
+const resultId = `m4-threat-replay-${"a".repeat(64)}`;
+
+before(async () => {
+  server = await createServer({
+    appType: "custom",
+    logLevel: "silent",
+    server: { middlewareMode: true },
+  });
+  ({
+    fetchM4ThreatReplayResult,
+    fetchM4ThreatVisual,
+    fetchM4ThreatVideoOverlay,
+    selectM4ThreatVideoFrame,
+  } = await server.ssrLoadModule("/src/core/laboratory/m4ReplayThreat.ts"));
+});
+
+after(async () => {
+  await server?.close();
+});
+
+function proposal(overrides = {}) {
+  return {
+    proposal_id: "proposal-1",
+    bbox_xyxy: [100, 120, 240, 360],
+    objectness: 0.91,
+    semantic_hint: "person",
+    occupied_support: false,
+    range_m: null,
+    threat_decision: "unknown",
+    threat_reason_codes: ["camera-only-no-metric-geometry"],
+    ...overrides,
+  };
+}
+
+test("M4.6 decodes accepted dual-evidence result without physical authority", async () => {
+  const result = await fetchM4ThreatReplayResult({
+    fetcher: async () => new Response(JSON.stringify({
+      schema_version: "missioncore.m4-threat-replay-catalog/v1",
+      items: [{
+        schema_version: "missioncore.m4-threat-replay-view/v1",
+        result_id: resultId,
+        created_at_utc: "2026-08-05T15:36:01.553Z",
+        status: "accepted",
+        profile_id: "m4-ravnoves00-virtual-corridor/v1",
+        rig_profile_id: "virtual-handheld-body-1000x600/v1",
+        corridor_profile_id: "ravnoves00-forward-corridor-8m/v1",
+        source_result_ids: {
+          detector: `m4-detector-replay-${"b".repeat(64)}`,
+          geometry: `m4-geometry-replay-${"c".repeat(64)}`,
+          temporal: `m4-temporal-replay-${"d".repeat(64)}`,
+        },
+        metrics: {
+          decisions: { threat: 8010, "not-threat": 6610, unknown: 60832 },
+          evidence: { "camera-only": 10158, "current-metric": 27299, "stale-or-held": 37995 },
+          fixtures: { critical: 4, critical_false_not_threat: 0, passed: 9, total: 9 },
+          runtime: {
+            frames_per_second: 116.4,
+            provider_latency_p50_ms: 4.3,
+            provider_latency_p95_ms: 19.8,
+            provider_latency_max_ms: 194.3,
+          },
+          reason_counts: { "geometry-only-evidence": 21958 },
+        },
+        configuration: {
+          virtual_body_m: [1, 0.6],
+          nominal_sensor_height_m: 1.25,
+          forward_corridor_m: 8,
+          prediction_horizon_seconds: 5,
+        },
+        limitations: ["replay only"],
+        accepted: true,
+        authority: "replay-simulated",
+        physical_collision_accepted: false,
+        actuation_allowed: false,
+      }],
+    }), { status: 200 }),
+  });
+  assert.equal(result.resultId, resultId);
+  assert.equal(result.metrics.evidence.currentMetric, 27299);
+  assert.equal(result.metrics.fixtures.criticalFalseNotThreat, 0);
+  assert.deepEqual(result.configuration.virtualBodyM, [1, 0.6]);
+});
+
+test("M4.6 binds exact CAMERA and metric 3D evidence to one replay frame", async () => {
+  const frame = await fetchM4ThreatVisual(resultId, 1, {
+    fetcher: async () => new Response(JSON.stringify({
+      schema_version: "missioncore.perception-threat-visual-frame/v1",
+      result_id: resultId,
+      ordinal: 1,
+      sequence: 20,
+      frame_id: "frame-000020",
+      source_time_ns: 37421857292,
+      point_cloud_body_xyz_m: [[1, 0, 0.1], [2, 0.2, 0.3]],
+      point_cloud_source_count: 12000,
+      point_cloud_sample_count: 2,
+      metric_obstacles: [{
+        component_id: "temporal-20-1",
+        state: "current",
+        motion: "moving",
+        centroid_body_xyz_m: [2, 0.1, 0.4],
+        cell_centers_body_xyz_m: [[2, 0.1, 0.4]],
+        assessment: {
+          component_id: "temporal-20-1",
+          decision: "threat",
+          corridor_intersection: "intersects",
+          relative_speed_mps: 1.2,
+          closest_approach_m: 0.4,
+          ttc_seconds: 1.6,
+          reason_codes: ["geometry-only-evidence"],
+        },
+      }],
+      camera_proposals: [proposal()],
+      rig: { length_m: 1, width_m: 0.6, nominal_sensor_height_m: 1.25 },
+      corridor: {
+        forward_length_m: 8,
+        rear_margin_m: 0.5,
+        half_width_m: 0.5,
+        prediction_horizon_seconds: 5,
+      },
+    }), { status: 200 }),
+  });
+  assert.equal(frame.sequence, 20);
+  assert.equal(frame.metricObstacles[0].assessment.decision, "threat");
+  assert.equal(frame.cameraProposals[0].threatDecision, "unknown");
+  assert.equal(frame.pointCloudSampleCount, 2);
+});
+
+test("M4.6 full video preserves camera-only unknown and nearest-frame selection", async () => {
+  const overlay = await fetchM4ThreatVideoOverlay(resultId, {
+    fetcher: async () => new Response(JSON.stringify({
+      schema_version: "missioncore.m4-threat-video-overlay/v1",
+      result_id: resultId,
+      recorded_source: { session_id: "20260720T065719Z_viewer_live" },
+      image_width: 800,
+      image_height: 600,
+      timeline_start_seconds: 35.421857292,
+      timeline_end_seconds: 484.044857292,
+      frame_count: 4489,
+      frames: [
+        {
+          frame_index: 0,
+          session_seconds: 35.421857292,
+          source_available: true,
+          camera_proposals: [],
+          decision_counts: { threat: 0, "not-threat": 0, unknown: 0 },
+        },
+        {
+          frame_index: 1,
+          session_seconds: 35.521857292,
+          source_available: true,
+          camera_proposals: [proposal()],
+          decision_counts: { threat: 0, "not-threat": 0, unknown: 1 },
+        },
+      ],
+      authority: "replay-simulated",
+    }), { status: 200 }),
+  });
+  assert.equal(overlay.frames[1].cameraProposals[0].rangeM, null);
+  assert.equal(selectM4ThreatVideoFrame(overlay.frames, 35.50).frameIndex, 1);
+});
+
+test("M4.6 viewer reuses shared video and metric evidence renderers", async () => {
+  const [visual, videoScene, metricScene] = await Promise.all([
+    readFile(new URL("../src/workspaces/laboratory/M4ReplayThreatVisual.tsx", import.meta.url), "utf8"),
+    readFile(new URL("../src/components/laboratory/RecordedEvidenceVideoScene.tsx", import.meta.url), "utf8"),
+    readFile(new URL("../src/components/laboratory/LaboratoryMetricEvidenceScene.tsx", import.meta.url), "utf8"),
+  ]);
+  assert.match(visual, /<RecordedEvidenceVideoScene/);
+  assert.match(visual, /<LaboratoryMetricEvidenceScene/);
+  assert.match(visual, /label: "VIDEO"/);
+  assert.match(visual, /label: "CAMERA"/);
+  assert.match(visual, /label: "3D"/);
+  assert.match(videoScene, /<RecordedFmp4Player/);
+  assert.match(metricScene, /OrbitControls/);
+});