diff --git a/README.md b/README.md
index f35e57d..a8888a3 100644
--- a/README.md
+++ b/README.md
@@ -126,7 +126,9 @@ immutable donor revision remains a packaging and CI prerequisite.
 The Observation spatial workspace embeds the open-source Rerun Web Viewer
 inside the Mission Core shell. It can open a compatible RRD file over HTTP(S) or a
 Rerun gRPC/proxy source such as `rerun+http://127.0.0.1:9876/proxy`. It does not
-use an external hosted viewer UI.
+use an external hosted viewer UI. Dynamic point-cloud and camera source
+composition, host-owned window layout and the current live-only timeline contract
+are fixed in [`ADR 0006`](docs/adr/0006-vendor-neutral-observation-sources-and-live-only-timeline.md).
 
 The first K1 live session or replay in a `k1link serve` process creates one local
 Rerun `RecordingStream`, starts its gRPC/proxy server on TCP 9876 and publishes
diff --git a/apps/control-station/src/App.tsx b/apps/control-station/src/App.tsx
index ee55016..5d75cd7 100644
--- a/apps/control-station/src/App.tsx
+++ b/apps/control-station/src/App.tsx
@@ -29,6 +29,7 @@ import { LandingStage } from "./components/LandingStage";
 import { useDevicePluginHost } from "./core/device-plugins/DevicePluginHost";
 import { useMissionRuntime } from "./core/runtime/MissionRuntimeContext";
 import type { ViewerSettings } from "./core/runtime/contracts";
+import { useObservationLayout } from "./core/observation/useObservationLayout";
 import {
   rootById,
   roots,
@@ -132,6 +133,7 @@ export default function App() {
   const activeSceneWindow = sceneWindowOrder[sceneWindowOrder.length - 1] ?? null;
   const automaticSourceUrl = runtime.state?.spatialSource?.url.trim() ?? "";
   const effectiveSourceUrl = sourceUrl || automaticSourceUrl;
+  const observationLayout = useObservationLayout(runtime.state?.observationSources ?? []);
 
   useEffect(() => {
     const remote = runtime.state?.viewerSettings;
@@ -238,7 +240,7 @@ export default function App() {
 
     if (activeDefinition?.kind === "spatial") {
       actions.push(
-        { label: "Настроить источник", icon: "network", onClick: openSource },
+        { label: "Настроить визуальный движок", icon: "network", onClick: openSource },
         { label: "Настроить отображение", icon: "sliders", onClick: openDisplay },
         { label: "Открыть слои", icon: "list", onClick: openLayers },
       );
@@ -370,6 +372,7 @@ export default function App() {
                 backendStatus={runtime.backendStatus}
                 sourceUrl={effectiveSourceUrl}
                 sceneSettings={sceneSettings}
+                observationLayout={observationLayout}
                 navigation={{
                   openView,
                   openSource,
@@ -384,8 +387,8 @@ export default function App() {
 
       <Window
         open={sourceWindowOpen}
-        title="Источники"
-        subtitle="Потоки и записи пространственной сцены"
+        title="Визуальный движок"
+        subtitle="Rerun gRPC и записи пространственной сцены"
         placement="end"
         draggable
         closeOnBackdrop={false}
diff --git a/apps/control-station/src/components/FloatingObservationWindow.tsx b/apps/control-station/src/components/FloatingObservationWindow.tsx
new file mode 100644
index 0000000..dbf0f7c
--- /dev/null
+++ b/apps/control-station/src/components/FloatingObservationWindow.tsx
@@ -0,0 +1,78 @@
+import type { RefObject } from "react";
+import { WorkspaceWindow } from "@nodedc/ui-react";
+
+import type { ObservationWindowRect } from "../core/observation/useObservationLayout";
+import type { ObservationSourceDescriptor } from "../core/runtime/contracts";
+import { ObservationMedia, observationSourceStatusLabel } from "./ObservationSources";
+
+export function initialObservationWindowRect(index: number): ObservationWindowRect {
+  return {
+    x: 18 + (index % 3) * 354,
+    y: 78 + Math.floor(index / 3) * 226,
+    width: 336,
+    height: 210,
+  };
+}
+
+export function FloatingObservationWindow({
+  source,
+  index,
+  boundsRef,
+  rect,
+  maximized,
+  active,
+  onRectChange,
+  onMaximizedChange,
+  onActivate,
+  onClose,
+}: {
+  source: ObservationSourceDescriptor;
+  index: number;
+  boundsRef: RefObject<HTMLElement | null>;
+  rect?: ObservationWindowRect;
+  maximized: boolean;
+  active: boolean;
+  onRectChange: (rect: ObservationWindowRect) => void;
+  onMaximizedChange: (maximized: boolean) => void;
+  onActivate: () => void;
+  onClose: () => void;
+}) {
+  return (
+    <WorkspaceWindow
+      boundsRef={boundsRef}
+      rect={rect ?? initialObservationWindowRect(index)}
+      onRectChange={onRectChange}
+      maximized={maximized}
+      onMaximizedChange={onMaximizedChange}
+      onActivate={onActivate}
+      onClose={onClose}
+      title={source.label}
+      subtitle={source.description}
+      status={(
+        <span className="floating-observation-window__status">
+          <i data-availability={source.availability} aria-hidden="true" />
+          {observationSourceStatusLabel(source)}
+        </span>
+      )}
+      footer={(
+        <span className="floating-observation-window__footer">
+          <span>{source.endpointLabel || source.transport}</span>
+          <span>{source.capabilities.timelineMode === "live-only" ? "Эфир без буфера" : "Временная шкала"}</span>
+        </span>
+      )}
+      minWidth={280}
+      minHeight={190}
+      resizable={source.capabilities.resizable}
+      active={active}
+      zIndex={maximized ? 15 : active ? 9 : 7}
+      className="floating-observation-window"
+      closeLabel={`Закрыть ${source.label}`}
+      maximizeLabel={`Развернуть ${source.label}`}
+      restoreLabel={`Восстановить ${source.label}`}
+      moveLabel={`Переместить ${source.label}`}
+      resizeLabel={`Изменить размер ${source.label}`}
+    >
+      <ObservationMedia source={source} />
+    </WorkspaceWindow>
+  );
+}
diff --git a/apps/control-station/src/components/ObservationSources.tsx b/apps/control-station/src/components/ObservationSources.tsx
new file mode 100644
index 0000000..659b243
--- /dev/null
+++ b/apps/control-station/src/components/ObservationSources.tsx
@@ -0,0 +1,149 @@
+import { Dropdown, Icon, type IconName } from "@nodedc/ui-react";
+
+import type {
+  ObservationSourceAvailability,
+  ObservationSourceDescriptor,
+  ObservationSourceModality,
+} from "../core/runtime/contracts";
+
+const sourceIcon: Record<ObservationSourceModality, IconName> = {
+  "point-cloud": "globe",
+  video: "video",
+  image: "image",
+  depth: "image",
+};
+
+const availabilityCopy: Record<ObservationSourceAvailability, string> = {
+  unverified: "Не подтверждён",
+  declared: "Канал объявлен",
+  available: "Доступен",
+  connecting: "Подключение",
+  streaming: "Эфир",
+  degraded: "Нестабильно",
+  unavailable: "Недоступен",
+  error: "Ошибка",
+};
+
+export function observationSourceStatusLabel(source: ObservationSourceDescriptor): string {
+  return availabilityCopy[source.availability];
+}
+
+export function ObservationMedia({ source }: { source: ObservationSourceDescriptor }) {
+  if (source.previewUrl && source.modality === "video") {
+    return (
+      <video
+        className="observation-media__asset"
+        src={source.previewUrl}
+        autoPlay
+        muted
+        playsInline
+      />
+    );
+  }
+
+  if (source.previewUrl && (source.modality === "image" || source.modality === "depth")) {
+    return <img className="observation-media__asset" src={source.previewUrl} alt={source.label} />;
+  }
+
+  return (
+    <div className="observation-media__empty">
+      <Icon name={sourceIcon[source.modality]} size={20} />
+      <strong>{observationSourceStatusLabel(source)}</strong>
+      <span>
+        {source.modality === "video"
+          ? "Канал известен, browser-preview ещё не подключён"
+          : source.description}
+      </span>
+    </div>
+  );
+}
+
+export function ObservationSourcePicker({
+  sources,
+  visibleSourceIds,
+  onToggle,
+}: {
+  sources: readonly ObservationSourceDescriptor[];
+  visibleSourceIds: ReadonlySet<string>;
+  onToggle: (sourceId: string) => void;
+}) {
+  const visibleCount = sources.filter((source) => visibleSourceIds.has(source.id)).length;
+
+  return (
+    <Dropdown
+      className="scene-source-picker"
+      placement="bottom-start"
+      width={340}
+      offset={10}
+      surfaceRole="dialog"
+      surfaceClassName="observation-source-menu"
+      trigger={({ open, toggle, setAnchorRef, setTriggerRef, surfaceId }) => (
+        <button
+          ref={(node) => {
+            setAnchorRef(node);
+            setTriggerRef(node);
+          }}
+          type="button"
+          className="scene-source-picker__trigger"
+          data-active={open || visibleCount > 0 ? "true" : undefined}
+          aria-label="Источники данных сцены"
+          aria-haspopup="dialog"
+          aria-expanded={open}
+          aria-controls={surfaceId}
+          onClick={toggle}
+        >
+          <Icon name="database" size={17} />
+          {sources.length > 0 ? <span>{visibleCount}</span> : null}
+        </button>
+      )}
+    >
+      <header className="observation-source-menu__head">
+        <div>
+          <span className="section-eyebrow">НАБЛЮДЕНИЕ</span>
+          <strong>Источники данных</strong>
+        </div>
+        <small>{sources.length ? `${visibleCount} из ${sources.length}` : "нет источников"}</small>
+      </header>
+      {sources.length ? (
+        <div className="observation-source-menu__list">
+          {sources.map((source) => {
+            const selected = visibleSourceIds.has(source.id);
+            return (
+              <button
+                key={source.id}
+                type="button"
+                className="nodedc-dropdown-option observation-source-option"
+                data-selected={selected ? "true" : undefined}
+                aria-pressed={selected}
+                onClick={() => onToggle(source.id)}
+              >
+                <span className="nodedc-dropdown-option__icon">
+                  <Icon name={sourceIcon[source.modality]} size={16} />
+                </span>
+                <span className="nodedc-dropdown-option__body">
+                  <span className="nodedc-dropdown-option__label">{source.label}</span>
+                  <span className="nodedc-dropdown-option__description">
+                    <i data-availability={source.availability} aria-hidden="true" />
+                    {observationSourceStatusLabel(source)} · {source.endpointLabel || source.transport}
+                  </span>
+                </span>
+                <span className="nodedc-dropdown-option__check">
+                  {selected ? <Icon name="check" size={15} /> : null}
+                </span>
+              </button>
+            );
+          })}
+        </div>
+      ) : (
+        <div className="observation-source-menu__empty">
+          <Icon name="database" size={18} />
+          <strong>Каталог пока пуст</strong>
+          <span>Выберите профиль устройства — его плагин опубликует доступные каналы.</span>
+        </div>
+      )}
+      <footer className="observation-source-menu__foot">
+        Каналы приходят из активного device-плагина; сцена не знает модель оборудования.
+      </footer>
+    </Dropdown>
+  );
+}
diff --git a/apps/control-station/src/components/ObservationTimeline.tsx b/apps/control-station/src/components/ObservationTimeline.tsx
new file mode 100644
index 0000000..41431e3
--- /dev/null
+++ b/apps/control-station/src/components/ObservationTimeline.tsx
@@ -0,0 +1,52 @@
+import { Button, Icon } from "@nodedc/ui-react";
+
+import type { ObservationTimelineMode } from "../core/runtime/contracts";
+
+export function ObservationTimeline({
+  active,
+  sourceCount,
+  mode = "live-only",
+  seekable = false,
+  synchronization = "host-arrival-best-effort",
+  className = "",
+}: {
+  active: boolean;
+  sourceCount: number;
+  mode?: ObservationTimelineMode;
+  seekable?: boolean;
+  synchronization?: "host-arrival-best-effort" | "shared-clock" | "frame-accurate";
+  className?: string;
+}) {
+  const buffered = seekable && (mode === "buffered" || mode === "recorded");
+  const synchronizationLabel = {
+    "host-arrival-best-effort": "Синхронизация по приходу",
+    "shared-clock": "Общие часы",
+    "frame-accurate": "Покадровая синхронизация",
+  }[synchronization];
+  return (
+    <div
+      className={`observation-timeline ${className}`.trim()}
+      data-active={active ? "true" : undefined}
+      data-mode={mode}
+    >
+      <Button size="compact" variant="ghost" disabled aria-label="Перейти к началу">
+        <Icon name="chevron-left" />
+      </Button>
+      <Button size="compact" variant="secondary" disabled>
+        {buffered ? "Воспроизвести" : "Только эфир"}
+      </Button>
+      <div className="observation-timeline__track" data-disabled={!buffered ? "true" : undefined}>
+        <span style={{ width: active ? "100%" : "0%" }} />
+      </div>
+      <div className="observation-timeline__meta">
+        <code>{active ? "LIVE" : "—:—:—.———"}</code>
+        <small>
+          {buffered ? `${sourceCount} каналов` : `${synchronizationLabel} · буфер не включён`}
+        </small>
+      </div>
+      <span className="observation-timeline__follow" data-active={active ? "true" : undefined}>
+        ЭФИР
+      </span>
+    </div>
+  );
+}
diff --git a/apps/control-station/src/core/observation/useObservationLayout.ts b/apps/control-station/src/core/observation/useObservationLayout.ts
new file mode 100644
index 0000000..0a4e73d
--- /dev/null
+++ b/apps/control-station/src/core/observation/useObservationLayout.ts
@@ -0,0 +1,137 @@
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
+
+import type { ObservationSourceDescriptor } from "../runtime/contracts";
+
+export interface ObservationWindowRect {
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+}
+
+export interface ObservationLayoutController {
+  visibleSourceIds: ReadonlySet<string>;
+  focusedSourceId: string | null;
+  activeFloatingSourceId: string | null;
+  maximizedFloatingSourceId: string | null;
+  windowRects: Readonly<Record<string, ObservationWindowRect>>;
+  toggleSource: (sourceId: string) => void;
+  hideSource: (sourceId: string) => void;
+  setFocusedSourceId: (sourceId: string | null) => void;
+  activateFloatingSource: (sourceId: string) => void;
+  setFloatingMaximized: (sourceId: string, maximized: boolean) => void;
+  setWindowRect: (sourceId: string, rect: ObservationWindowRect) => void;
+}
+
+function canOpenByDefault(source: ObservationSourceDescriptor): boolean {
+  if (!source.capabilities.defaultVisible) return false;
+  if (source.availability === "unavailable" || source.availability === "error") return false;
+  return source.modality === "point-cloud" || Boolean(source.previewUrl);
+}
+
+function catalogIdentity(sources: readonly ObservationSourceDescriptor[]): string {
+  return sources
+    .map((source) => [
+      source.id,
+      source.binding.deviceSessionId,
+      source.binding.deviceId,
+    ].filter(Boolean).join(":"))
+    .sort()
+    .join("|");
+}
+
+export function useObservationLayout(
+  sources: readonly ObservationSourceDescriptor[],
+): ObservationLayoutController {
+  const [visibleIds, setVisibleIds] = useState<string[]>([]);
+  const [focusedSourceId, setFocusedSourceIdState] = useState<string | null>(null);
+  const [activeFloatingSourceId, setActiveFloatingSourceId] = useState<string | null>(null);
+  const [maximizedFloatingSourceId, setMaximizedFloatingSourceId] = useState<string | null>(null);
+  const [windowRects, setWindowRects] = useState<Record<string, ObservationWindowRect>>({});
+  const initializedCatalog = useRef<string | null>(null);
+  const sourceIdList = sources.map((source) => source.id).sort();
+  const sourceIdsIdentity = sourceIdList.join("\u0000");
+  const sourceIds = useMemo(() => new Set(sourceIdList), [sourceIdsIdentity]);
+  const identity = catalogIdentity(sources);
+
+  useEffect(() => {
+    setVisibleIds((current) => {
+      const next = current.filter((sourceId) => sourceIds.has(sourceId));
+      return next.length === current.length ? current : next;
+    });
+    setFocusedSourceIdState((current) => current && sourceIds.has(current) ? current : null);
+    setActiveFloatingSourceId((current) => current && sourceIds.has(current) ? current : null);
+    setMaximizedFloatingSourceId((current) => current && sourceIds.has(current) ? current : null);
+    setWindowRects((current) => {
+      const entries = Object.entries(current);
+      const nextEntries = entries.filter(([sourceId]) => sourceIds.has(sourceId));
+      return nextEntries.length === entries.length ? current : Object.fromEntries(nextEntries);
+    });
+  }, [sourceIds]);
+
+  useEffect(() => {
+    if (!identity) {
+      initializedCatalog.current = null;
+      return;
+    }
+    if (initializedCatalog.current === identity) return;
+    initializedCatalog.current = identity;
+    const defaults = sources
+      .filter(canOpenByDefault)
+      .map((source) => source.id);
+    setVisibleIds(defaults);
+    const firstFloating = sources.find(
+      (source) => canOpenByDefault(source) && source.capabilities.overlay,
+    );
+    setActiveFloatingSourceId(firstFloating?.id ?? null);
+  }, [identity, sources]);
+
+  const toggleSource = useCallback((sourceId: string) => {
+    const selected = visibleIds.includes(sourceId);
+    setVisibleIds((current) => selected
+      ? current.filter((candidate) => candidate !== sourceId)
+      : current.includes(sourceId) ? current : [...current, sourceId]);
+    if (!selected) setActiveFloatingSourceId(sourceId);
+  }, [visibleIds]);
+
+  const hideSource = useCallback((sourceId: string) => {
+    setVisibleIds((current) => current.filter((candidate) => candidate !== sourceId));
+    setFocusedSourceIdState((current) => current === sourceId ? null : current);
+    setActiveFloatingSourceId((current) => current === sourceId ? null : current);
+    setMaximizedFloatingSourceId((current) => current === sourceId ? null : current);
+  }, []);
+
+  const setFocusedSourceId = useCallback((sourceId: string | null) => {
+    setFocusedSourceIdState(sourceId);
+    if (sourceId) setActiveFloatingSourceId(sourceId);
+  }, []);
+
+  const activateFloatingSource = useCallback((sourceId: string) => {
+    setActiveFloatingSourceId(sourceId);
+  }, []);
+
+  const setFloatingMaximized = useCallback((sourceId: string, maximized: boolean) => {
+    setMaximizedFloatingSourceId(maximized ? sourceId : null);
+    if (maximized) setActiveFloatingSourceId(sourceId);
+  }, []);
+
+  const setWindowRect = useCallback((sourceId: string, rect: ObservationWindowRect) => {
+    setWindowRects((current) => ({ ...current, [sourceId]: rect }));
+  }, []);
+
+  const visibleSourceIds = useMemo(() => new Set(visibleIds), [visibleIds]);
+
+  return {
+    visibleSourceIds,
+    focusedSourceId,
+    activeFloatingSourceId,
+    maximizedFloatingSourceId,
+    windowRects,
+    toggleSource,
+    hideSource,
+    setFocusedSourceId,
+    activateFloatingSource,
+    setFloatingMaximized,
+    setWindowRect,
+  };
+}
diff --git a/apps/control-station/src/core/runtime/contracts.ts b/apps/control-station/src/core/runtime/contracts.ts
index ca596e8..0fec2bd 100644
--- a/apps/control-station/src/core/runtime/contracts.ts
+++ b/apps/control-station/src/core/runtime/contracts.ts
@@ -72,6 +72,70 @@ export interface SpatialSourceDescriptor {
   kind: "rerun-grpc" | "rrd" | "other";
 }
 
+export type ObservationSourceModality = "point-cloud" | "video" | "image" | "depth";
+
+export type ObservationSourceAvailability =
+  | "unverified"
+  | "declared"
+  | "available"
+  | "connecting"
+  | "streaming"
+  | "degraded"
+  | "unavailable"
+  | "error";
+
+export type ObservationTimelineMode = "live-only" | "buffered" | "recorded";
+
+export interface ObservationSourceProvider {
+  pluginId: string;
+  pluginVersion: string;
+  modelId: string;
+  compatibilityProfileId?: string | null;
+}
+
+export interface ObservationSourceBinding {
+  deviceId?: string | null;
+  deviceSessionId?: string | null;
+  acquisitionId?: string | null;
+}
+
+export interface ObservationSourceCapabilities {
+  overlay: boolean;
+  fullscreen: boolean;
+  resizable: boolean;
+  defaultVisible: boolean;
+  timelineMode: ObservationTimelineMode;
+  seekable: boolean;
+  sessionRecording: boolean;
+  clockId?: string | null;
+  spatialRegistration: "native" | "calibrated" | "unresolved" | "not-applicable";
+}
+
+export interface ObservationSourceDescriptor {
+  id: string;
+  sourceId: string;
+  semanticChannelId: string;
+  label: string;
+  description: string;
+  modality: ObservationSourceModality;
+  role: "primary" | "auxiliary";
+  availability: ObservationSourceAvailability;
+  transport: "rerun-grpc" | "rtsp" | "websocket" | "recording" | "other";
+  endpointLabel?: string | null;
+  previewUrl?: string | null;
+  provider: ObservationSourceProvider;
+  binding: ObservationSourceBinding;
+  capabilities: ObservationSourceCapabilities;
+}
+
+export interface ObservationTimelineSnapshot {
+  mode: ObservationTimelineMode;
+  seekable: boolean;
+  sessionRecording: boolean;
+  synchronization: "host-arrival-best-effort" | "shared-clock" | "frame-accurate";
+  range: { startSeconds: number; endSeconds: number } | null;
+}
+
 export interface MissionRuntimeState {
   phase: RuntimePhase;
   message?: string | null;
@@ -80,6 +144,8 @@ export interface MissionRuntimeState {
   acquisition?: RuntimeAcquisitionSnapshot | null;
   operations?: readonly RuntimeOperationSnapshot[];
   spatialSource?: SpatialSourceDescriptor | null;
+  observationSources?: readonly ObservationSourceDescriptor[];
+  observationTimeline?: ObservationTimelineSnapshot;
   viewerSettings?: ViewerSettings | null;
   sourceMode: SourceMode;
   metrics?: StreamMetrics;
diff --git a/apps/control-station/src/device-plugins/xgrids-k1/api.ts b/apps/control-station/src/device-plugins/xgrids-k1/api.ts
index 9cbb0f7..76a4f37 100644
--- a/apps/control-station/src/device-plugins/xgrids-k1/api.ts
+++ b/apps/control-station/src/device-plugins/xgrids-k1/api.ts
@@ -122,6 +122,22 @@ export interface XgridsK1Metrics {
   [key: string]: number | null | undefined;
 }
 
+export interface XgridsSensorCatalogStream {
+  stream_id: string;
+  sensor_kind?: string | null;
+  modality?: string | null;
+  availability?: string | null;
+  decode_status?: string | null;
+  frame_id?: string | null;
+  coordinate_convention?: string | null;
+}
+
+export interface XgridsSensorCatalog {
+  schema_version?: string | null;
+  revision?: string | null;
+  streams?: XgridsSensorCatalogStream[];
+}
+
 export interface XgridsK1State {
   contract_version?: string | null;
   phase?: string | null;
@@ -141,6 +157,7 @@ export interface XgridsK1State {
   acquisition?: XgridsAcquisition | null;
   operations?: XgridsOperation[];
   last_operation?: XgridsOperation | null;
+  sensor_catalog?: XgridsSensorCatalog | null;
 }
 
 export interface HealthResponse {
diff --git a/apps/control-station/src/device-plugins/xgrids-k1/observationSources.ts b/apps/control-station/src/device-plugins/xgrids-k1/observationSources.ts
new file mode 100644
index 0000000..f270fdc
--- /dev/null
+++ b/apps/control-station/src/device-plugins/xgrids-k1/observationSources.ts
@@ -0,0 +1,153 @@
+import type { DeviceModelDefinition } from "../../core/device-plugins/contracts";
+import type {
+  ObservationSourceAvailability,
+  ObservationSourceDescriptor,
+  ObservationSourceProvider,
+} from "../../core/runtime/contracts";
+import { confirmedRuntimeSourceMode, effectiveAcquisition } from "./lifecycle";
+import { xgridsK1Manifest } from "./manifest";
+import type { XgridsK1State } from "./api";
+
+function providerFor(
+  state: XgridsK1State,
+  activeModel: DeviceModelDefinition,
+): ObservationSourceProvider {
+  return {
+    pluginId: xgridsK1Manifest.metadata.id,
+    pluginVersion: xgridsK1Manifest.metadata.version,
+    modelId: state.device_ref?.model_id || activeModel.id,
+    compatibilityProfileId:
+      state.device_session?.compatibility_profile_id ?? state.compatibility?.profile_id ?? null,
+  };
+}
+
+function bindingFor(state: XgridsK1State) {
+  const acquisition = effectiveAcquisition(state);
+  return {
+    deviceId: state.device_ref?.device_id ?? null,
+    deviceSessionId: state.device_session?.device_session_id ?? null,
+    acquisitionId: acquisition?.acquisition_id ?? null,
+  };
+}
+
+function catalogDeclares(state: XgridsK1State, streamId: string): boolean {
+  return Boolean(state.sensor_catalog?.streams?.some((stream) => stream.stream_id === streamId));
+}
+
+function spatialAvailability(state: XgridsK1State): ObservationSourceAvailability {
+  const mode = confirmedRuntimeSourceMode(state);
+  if (mode !== "idle" && state.rerun_grpc_url?.trim()) return "streaming";
+  if (state.rerun_grpc_url?.trim()) return "available";
+  if (state.device_session?.connectivity === "degraded") return "degraded";
+  if (state.device_session?.connectivity === "connected") return "available";
+  return catalogDeclares(state, "spatial.point-cloud.live") ? "declared" : "unavailable";
+}
+
+function cameraAvailability(state: XgridsK1State): ObservationSourceAvailability {
+  const stream = state.sensor_catalog?.streams?.find(
+    (candidate) => candidate.stream_id === "camera.preview.live",
+  );
+  const compatibilityProfileId =
+    state.device_session?.compatibility_profile_id ?? state.compatibility?.profile_id ?? null;
+  if (!stream) return "unavailable";
+  if (stream.availability !== "observed" || !compatibilityProfileId) return "unverified";
+  if (state.device_session?.connectivity === "degraded") return "degraded";
+  // The firmware profile proves that both RTSP channels exist, but Mission Core
+  // does not yet expose a browser-decodable preview URL. Do not report a live
+  // camera merely because the point-cloud acquisition is running.
+  return "declared";
+}
+
+export function xgridsK1ObservationSources(
+  state: XgridsK1State,
+  activeModel: DeviceModelDefinition,
+): ObservationSourceDescriptor[] {
+  const provider = providerFor(state, activeModel);
+  const binding = bindingFor(state);
+  const clockId = binding.acquisitionId ?? binding.deviceSessionId ?? binding.deviceId ?? null;
+  const descriptorId = (sourceId: string) =>
+    `${provider.pluginId}:${provider.modelId}:${sourceId}`;
+
+  return [
+    {
+      id: descriptorId("sensor.lidar.primary"),
+      sourceId: "sensor.lidar.primary",
+      semanticChannelId: "spatial.point-cloud.live",
+      label: "K1 · облако точек",
+      description: "Облако точек, поза и траектория в общей 3D-сцене",
+      modality: "point-cloud",
+      role: "primary",
+      availability: spatialAvailability(state),
+      transport: "rerun-grpc",
+      endpointLabel: state.rerun_grpc_url?.trim() ? "Rerun gRPC" : "MQTT → Rerun",
+      previewUrl: state.rerun_grpc_url?.trim() || null,
+      provider,
+      binding,
+      capabilities: {
+        overlay: false,
+        fullscreen: true,
+        resizable: false,
+        defaultVisible: true,
+        timelineMode: "live-only",
+        // Rerun can hold replay data, but the Mission Core host timeline is not
+        // wired to its time controller yet.
+        seekable: false,
+        sessionRecording: false,
+        clockId,
+        spatialRegistration: "native",
+      },
+    },
+    {
+      id: descriptorId("sensor.camera.left"),
+      sourceId: "sensor.camera.left",
+      semanticChannelId: "camera.preview.live",
+      label: "K1 · камера слева",
+      description: "Левый H.264 preview-канал профиля устройства",
+      modality: "video",
+      role: "auxiliary",
+      availability: cameraAvailability(state),
+      transport: "rtsp",
+      endpointLabel: "RTSP · left",
+      previewUrl: null,
+      provider,
+      binding,
+      capabilities: {
+        overlay: true,
+        fullscreen: true,
+        resizable: true,
+        defaultVisible: false,
+        timelineMode: "live-only",
+        seekable: false,
+        sessionRecording: false,
+        clockId,
+        spatialRegistration: "unresolved",
+      },
+    },
+    {
+      id: descriptorId("sensor.camera.right"),
+      sourceId: "sensor.camera.right",
+      semanticChannelId: "camera.preview.live",
+      label: "K1 · камера справа",
+      description: "Правый H.264 preview-канал профиля устройства",
+      modality: "video",
+      role: "auxiliary",
+      availability: cameraAvailability(state),
+      transport: "rtsp",
+      endpointLabel: "RTSP · right",
+      previewUrl: null,
+      provider,
+      binding,
+      capabilities: {
+        overlay: true,
+        fullscreen: true,
+        resizable: true,
+        defaultVisible: false,
+        timelineMode: "live-only",
+        seekable: false,
+        sessionRecording: false,
+        clockId,
+        spatialRegistration: "unresolved",
+      },
+    },
+  ];
+}
diff --git a/apps/control-station/src/device-plugins/xgrids-k1/runtimeContext.tsx b/apps/control-station/src/device-plugins/xgrids-k1/runtimeContext.tsx
index 8f34e4e..aed17f1 100644
--- a/apps/control-station/src/device-plugins/xgrids-k1/runtimeContext.tsx
+++ b/apps/control-station/src/device-plugins/xgrids-k1/runtimeContext.tsx
@@ -18,6 +18,7 @@ import {
 import { localizeRuntimeMessage } from "./messages";
 import { xgridsK1Manifest } from "./manifest";
 import { finiteMetric, pipelineLatency } from "./presentation";
+import { xgridsK1ObservationSources } from "./observationSources";
 import { useXgridsK1Runtime } from "./useXgridsK1Runtime";
 
 export type XgridsK1Controller = ReturnType<typeof useXgridsK1Runtime>;
@@ -90,6 +91,16 @@ function normalizeState(
           kind: "rerun-grpc",
         }
       : null,
+    observationSources: xgridsK1ObservationSources(state, activeModel),
+    observationTimeline: {
+      // This is the shared host timeline. A replayable Rerun source alone does
+      // not make camera and point-cloud time jointly seekable.
+      mode: "live-only",
+      seekable: false,
+      sessionRecording: false,
+      synchronization: "host-arrival-best-effort",
+      range: null,
+    },
     viewerSettings: state.viewer_settings,
     sourceMode: confirmedRuntimeSourceMode(state),
     metrics: {
diff --git a/apps/control-station/src/styles.css b/apps/control-station/src/styles.css
index 0768e3b..1405c9b 100644
--- a/apps/control-station/src/styles.css
+++ b/apps/control-station/src/styles.css
@@ -4,3 +4,4 @@
 @import "./styles/spatial.css";
 @import "./styles/device.css";
 @import "./styles/responsive.css";
+@import "./styles/observation.css";
diff --git a/apps/control-station/src/styles/observation.css b/apps/control-station/src/styles/observation.css
new file mode 100644
index 0000000..9a79dad
--- /dev/null
+++ b/apps/control-station/src/styles/observation.css
@@ -0,0 +1,451 @@
+.scene-source-controls {
+  position: absolute;
+  z-index: 12;
+  top: 0.85rem;
+  left: 0.85rem;
+  display: flex;
+  align-items: center;
+  gap: 0.45rem;
+}
+
+.scene-source-picker__trigger,
+.scene-source-control,
+.scene-focus-exit {
+  display: inline-grid;
+  width: 2.75rem;
+  height: 2.75rem;
+  place-items: center;
+  border: 1px solid rgb(255 255 255 / 0.09);
+  border-radius: 50%;
+  background: rgb(12 13 16 / 0.82);
+  color: var(--nodedc-text-secondary);
+  cursor: pointer;
+  backdrop-filter: blur(18px);
+}
+
+.scene-source-picker__trigger {
+  position: relative;
+}
+
+.scene-source-picker__trigger:hover,
+.scene-source-control:hover,
+.scene-focus-exit:hover,
+.scene-source-picker__trigger[data-active="true"] {
+  border-color: rgb(255 255 255 / 0.18);
+  color: var(--nodedc-text-primary);
+}
+
+.scene-source-picker__trigger > span {
+  position: absolute;
+  top: -0.2rem;
+  right: -0.2rem;
+  display: grid;
+  min-width: 1.05rem;
+  height: 1.05rem;
+  place-items: center;
+  border-radius: 999px;
+  background: var(--nodedc-text-primary);
+  color: #090a0c;
+  padding: 0 0.25rem;
+  font-size: 0.5rem;
+  font-weight: 800;
+}
+
+.scene-focus-exit {
+  position: absolute;
+  z-index: 20;
+  top: 0.85rem;
+  right: 0.85rem;
+}
+
+.scene-status--top-left {
+  left: 7.1rem;
+}
+
+.scene-status[aria-hidden="true"],
+.scene-metrics[aria-hidden="true"] {
+  display: none;
+}
+
+.observation-source-menu {
+  overflow: hidden;
+}
+
+.observation-source-menu__head,
+.observation-source-menu__foot {
+  padding: 0.85rem 0.9rem;
+}
+
+.observation-source-menu__head {
+  display: flex;
+  align-items: flex-end;
+  justify-content: space-between;
+  gap: 1rem;
+  border-bottom: 1px solid var(--station-hairline);
+}
+
+.observation-source-menu__head strong,
+.observation-source-menu__head span {
+  display: block;
+}
+
+.observation-source-menu__head strong {
+  margin-top: 0.34rem;
+  color: var(--nodedc-text-primary);
+  font-size: 0.76rem;
+}
+
+.observation-source-menu__head small,
+.observation-source-menu__foot {
+  color: var(--nodedc-text-muted);
+  font-size: 0.55rem;
+  line-height: 1.4;
+}
+
+.observation-source-menu__list {
+  display: grid;
+  max-height: min(28rem, 60vh);
+  overflow: auto;
+  padding: 0.35rem;
+}
+
+.observation-source-option .nodedc-dropdown-option__description {
+  display: flex;
+  align-items: center;
+  gap: 0.35rem;
+}
+
+.observation-source-option i,
+.floating-observation-window i,
+.camera-slot__status i {
+  width: 0.42rem;
+  height: 0.42rem;
+  flex: 0 0 0.42rem;
+  border-radius: 50%;
+  background: var(--nodedc-text-muted);
+}
+
+i[data-availability="available"],
+i[data-availability="streaming"] {
+  background: rgb(var(--nodedc-success-rgb));
+}
+
+i[data-availability="connecting"],
+i[data-availability="declared"] {
+  background: rgb(var(--nodedc-warning-rgb));
+}
+
+i[data-availability="unverified"] {
+  background: var(--nodedc-text-muted);
+}
+
+i[data-availability="degraded"],
+i[data-availability="error"] {
+  background: rgb(var(--nodedc-danger-rgb));
+}
+
+.observation-source-menu__empty,
+.camera-grid__empty,
+.observation-media__empty {
+  display: grid;
+  place-items: center;
+  align-content: center;
+  gap: 0.5rem;
+  color: var(--nodedc-text-muted);
+  text-align: center;
+}
+
+.observation-source-menu__empty {
+  min-height: 10rem;
+  padding: 1rem;
+}
+
+.observation-source-menu__empty strong,
+.observation-media__empty strong,
+.camera-grid__empty strong {
+  color: var(--nodedc-text-secondary);
+  font-size: 0.7rem;
+}
+
+.observation-source-menu__empty span,
+.observation-media__empty span,
+.camera-grid__empty span {
+  max-width: 24rem;
+  font-size: 0.59rem;
+  line-height: 1.45;
+}
+
+.observation-source-menu__foot {
+  border-top: 1px solid var(--station-hairline);
+}
+
+.observation-media__asset,
+.observation-media__empty {
+  width: 100%;
+  height: 100%;
+}
+
+.observation-media__asset {
+  display: block;
+  object-fit: contain;
+  background: #050608;
+}
+
+.observation-media__empty {
+  min-height: 9rem;
+  background: #07080a;
+}
+
+.floating-observation-window__status,
+.floating-observation-window__footer {
+  display: flex;
+  align-items: center;
+  gap: 0.45rem;
+}
+
+.camera-slot__head-actions button {
+  display: grid;
+  width: 1.9rem;
+  height: 1.9rem;
+  place-items: center;
+  border: 0;
+  border-radius: 50%;
+  background: rgb(255 255 255 / 0.05);
+  color: var(--nodedc-text-secondary);
+  cursor: pointer;
+}
+
+.camera-slot__head-actions button:hover {
+  background: rgb(255 255 255 / 0.1);
+  color: var(--nodedc-text-primary);
+}
+
+.floating-observation-window__status {
+  color: var(--nodedc-text-secondary);
+  font-size: 0.54rem;
+}
+
+.floating-observation-window__footer {
+  width: 100%;
+  justify-content: space-between;
+  color: var(--nodedc-text-muted);
+  font-size: 0.53rem;
+}
+
+.floating-observation-window .nodedc-workspace-window__body {
+  background: #06070a;
+}
+
+.observation-timeline {
+  display: grid;
+  min-width: 0;
+  grid-template-columns: auto auto minmax(0, 1fr) auto auto;
+  align-items: center;
+  gap: 0.6rem;
+  border: 1px solid rgb(255 255 255 / 0.055);
+  border-radius: 0.9rem;
+  background: rgb(9 10 13 / 0.78);
+  padding: 0.4rem;
+  backdrop-filter: blur(16px);
+}
+
+.observation-timeline__track {
+  height: 0.3rem;
+  overflow: hidden;
+  border-radius: 999px;
+  background: rgb(255 255 255 / 0.08);
+}
+
+.observation-timeline__track span {
+  display: block;
+  height: 100%;
+  border-radius: inherit;
+  background: var(--nodedc-text-primary);
+}
+
+.observation-timeline__track[data-disabled="true"] {
+  opacity: 0.46;
+}
+
+.observation-timeline__meta {
+  display: grid;
+  justify-items: end;
+  gap: 0.12rem;
+}
+
+.observation-timeline__meta code,
+.observation-timeline__meta small {
+  color: var(--nodedc-text-muted);
+  font-size: 0.52rem;
+  white-space: nowrap;
+}
+
+.observation-timeline__follow {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.38rem;
+  color: var(--nodedc-text-muted);
+  padding: 0.3rem 0.45rem;
+  font-size: 0.52rem;
+  font-weight: 820;
+}
+
+.observation-timeline__follow::before {
+  width: 0.4rem;
+  height: 0.4rem;
+  border-radius: 50%;
+  background: var(--nodedc-text-muted);
+  content: "";
+}
+
+.observation-timeline__follow[data-active="true"] {
+  color: var(--nodedc-text-primary);
+}
+
+.observation-timeline__follow[data-active="true"]::before {
+  background: rgb(var(--nodedc-success-rgb));
+}
+
+.scene-timeline {
+  position: absolute;
+  z-index: 10;
+  right: 0.75rem;
+  bottom: 0.75rem;
+  left: 0.75rem;
+}
+
+.spatial-workspace[data-focused="true"] {
+  min-height: 0;
+  grid-template-rows: minmax(0, 1fr);
+  gap: 0;
+}
+
+.spatial-workspace[data-focused="true"] > .spatial-toolbar,
+.spatial-workspace[data-focused="true"] > .spatial-contract-strip {
+  display: none;
+}
+
+.cameras-workspace {
+  height: 100%;
+  min-height: 0;
+  grid-template-rows: auto auto minmax(0, 1fr) auto;
+  overflow: hidden;
+  padding-bottom: 0;
+}
+
+.camera-workspace__catalog {
+  display: flex;
+  min-width: 0;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 0.8rem;
+  color: var(--nodedc-text-muted);
+  font-size: 0.6rem;
+}
+
+.camera-grid {
+  display: grid;
+  min-height: 0;
+  grid-template-columns: repeat(auto-fit, minmax(min(24rem, 100%), 1fr));
+  grid-template-rows: none;
+  grid-auto-rows: minmax(16rem, 1fr);
+  gap: 0.75rem;
+  overflow: auto;
+}
+
+.camera-grid[data-count="1"] {
+  grid-template-columns: minmax(0, 1fr);
+}
+
+.camera-grid__empty {
+  min-height: 18rem;
+  border-radius: 1rem;
+  background: #07080a;
+  box-shadow: inset 0 0 0 1px var(--station-hairline);
+}
+
+.camera-slot {
+  grid-template-rows: auto minmax(0, 1fr) auto;
+}
+
+.camera-slot header,
+.camera-slot footer {
+  z-index: 2;
+}
+
+.camera-slot__head-actions,
+.camera-slot__status {
+  display: flex;
+  align-items: center;
+  gap: 0.45rem;
+}
+
+.camera-slot__status {
+  color: var(--nodedc-text-muted);
+  font-size: 0.56rem;
+}
+
+.camera-slot__body {
+  position: relative;
+  z-index: 1;
+  min-width: 0;
+  min-height: 0;
+  overflow: hidden;
+}
+
+.camera-slot footer {
+  align-items: flex-end;
+}
+
+.camera-slot footer span {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.camera-slot footer small {
+  flex: 0 0 auto;
+  color: var(--nodedc-text-secondary);
+  font-size: 0.53rem;
+}
+
+.camera-timeline {
+  position: relative;
+}
+
+.cameras-workspace[data-focused="true"] {
+  height: 100%;
+  grid-template-rows: minmax(0, 1fr) auto;
+  padding-bottom: 0;
+}
+
+.cameras-workspace[data-focused="true"] > .workspace-lead,
+.cameras-workspace[data-focused="true"] > .camera-workspace__catalog {
+  display: none;
+}
+
+.cameras-workspace[data-focused="true"] .camera-grid {
+  min-height: 0;
+  overflow: hidden;
+}
+
+@media (max-width: 760px) {
+  .scene-status--top-left {
+    top: 4.2rem;
+    left: 0.6rem;
+  }
+
+  .observation-timeline {
+    grid-template-columns: auto minmax(0, 1fr) auto;
+  }
+
+  .observation-timeline > .nodedc-button:first-child,
+  .observation-timeline__meta {
+    display: none;
+  }
+
+  .camera-grid {
+    grid-template-columns: 1fr;
+    grid-auto-rows: minmax(14rem, 1fr);
+  }
+}
diff --git a/apps/control-station/src/workspaces/Workspaces.tsx b/apps/control-station/src/workspaces/Workspaces.tsx
index b6dea91..8caeea5 100644
--- a/apps/control-station/src/workspaces/Workspaces.tsx
+++ b/apps/control-station/src/workspaces/Workspaces.tsx
@@ -1,4 +1,4 @@
-import { useCallback, useMemo, useState } from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import {
   Button,
   GlassSurface,
@@ -7,7 +7,19 @@ import {
 } from "@nodedc/ui-react";
 
 import { MetricCard } from "../components/MetricCard";
-import type { BackendStatus, MissionRuntimeState } from "../core/runtime/contracts";
+import {
+  ObservationMedia,
+  ObservationSourcePicker,
+  observationSourceStatusLabel,
+} from "../components/ObservationSources";
+import { ObservationTimeline } from "../components/ObservationTimeline";
+import { FloatingObservationWindow } from "../components/FloatingObservationWindow";
+import type { ObservationLayoutController } from "../core/observation/useObservationLayout";
+import type {
+  BackendStatus,
+  MissionRuntimeState,
+  ObservationSourceDescriptor,
+} from "../core/runtime/contracts";
 import {
   RerunViewport,
   type RerunSelection,
@@ -84,6 +96,7 @@ export interface WorkspaceRendererProps {
   backendStatus: BackendStatus;
   sourceUrl: string;
   sceneSettings: SceneSettings;
+  observationLayout: ObservationLayoutController;
   navigation: WorkspaceNavigation;
 }
 
@@ -236,6 +249,7 @@ function SpatialWorkspace({
   state,
   sourceUrl,
   sceneSettings,
+  observationLayout,
   navigation,
 }: WorkspaceRendererProps) {
   const [viewerStatus, setViewerStatus] = useState<RerunViewportStatus>(sourceUrl ? "loading" : "idle");
@@ -246,6 +260,23 @@ function SpatialWorkspace({
   const latency = pipelineLatency(metrics);
   const frameRate = finiteMetric(metrics?.frameRateHz);
   const points = finiteMetric(metrics?.pointCount);
+  const observationSources = state?.observationSources ?? [];
+  const pointCloudSource = observationSources.find((source) => source.modality === "point-cloud");
+  const pointCloudVisible = pointCloudSource
+    ? observationLayout.visibleSourceIds.has(pointCloudSource.id)
+    : Boolean(sourceUrl.trim());
+  const mediaSources = observationSources.filter(
+    (source) => source.capabilities.overlay && source.modality !== "point-cloud",
+  );
+  const visibleMediaSources = mediaSources.filter((source) =>
+    observationLayout.visibleSourceIds.has(source.id),
+  );
+  const pointCloudFocused = Boolean(
+    pointCloudSource && observationLayout.focusedSourceId === pointCloudSource.id,
+  );
+  const floatingSourceMaximized = Boolean(observationLayout.maximizedFloatingSourceId);
+  const timeline = state?.observationTimeline;
+  const viewportRef = useRef<HTMLDivElement>(null);
 
   const onStatusChange = useCallback((status: RerunViewportStatus, message?: string) => {
     setViewerStatus(status);
@@ -253,6 +284,13 @@ function SpatialWorkspace({
   }, []);
   const onSelectionChange = useCallback((next: RerunSelection | null) => setSelection(next), []);
 
+  useEffect(() => {
+    if (pointCloudVisible && sourceUrl.trim()) return;
+    setViewerStatus("idle");
+    setViewerMessage("");
+    setSelection(null);
+  }, [pointCloudVisible, sourceUrl]);
+
   const viewerStatusLabel = {
     idle: "Источник не назначен",
     loading: "Подключение",
@@ -263,14 +301,14 @@ function SpatialWorkspace({
   const viewerStatusTone = viewerStatus === "ready" ? "success" : viewerStatus === "error" ? "danger" : "neutral";
 
   return (
-    <div className="spatial-workspace">
+    <div className="spatial-workspace" data-focused={pointCloudFocused ? "true" : undefined}>
       <div className="spatial-toolbar">
         <div className="spatial-toolbar__mode">
           <span className="section-eyebrow">СЦЕНА 3D · RERUN</span>
         </div>
         <div className="spatial-toolbar__actions">
           <Button size="compact" variant="secondary" icon={<Icon name="network" />} onClick={navigation.openSource}>
-            Источник
+            Движок
           </Button>
           <Button size="compact" variant="secondary" icon={<Icon name="list" />} onClick={navigation.openLayers}>
             Слои
@@ -281,8 +319,13 @@ function SpatialWorkspace({
         </div>
       </div>
 
-      <div className="spatial-viewport-shell">
-        {sourceUrl.trim() ? (
+      <div
+        ref={viewportRef}
+        className="spatial-viewport-shell"
+        data-primary-focused={pointCloudFocused ? "true" : undefined}
+        data-media-maximized={floatingSourceMaximized ? "true" : undefined}
+      >
+        {sourceUrl.trim() && pointCloudVisible ? (
           <RerunViewport
             sourceUrl={sourceUrl}
             onStatusChange={onStatusChange}
@@ -292,13 +335,49 @@ function SpatialWorkspace({
           <EmptySpatialStage settings={sceneSettings} />
         )}
 
-        <div className="scene-status scene-status--top-left">
+        {pointCloudFocused ? (
+          <button
+            type="button"
+            className="scene-focus-exit"
+            aria-label="Выйти из полноэкранного режима облака точек"
+            onClick={() => observationLayout.setFocusedSourceId(null)}
+          >
+            <Icon name="minimize" size={16} />
+          </button>
+        ) : !floatingSourceMaximized ? (
+          <div className="scene-source-controls">
+            <ObservationSourcePicker
+              sources={observationSources}
+              visibleSourceIds={observationLayout.visibleSourceIds}
+              onToggle={observationLayout.toggleSource}
+            />
+            {pointCloudSource?.capabilities.fullscreen && pointCloudVisible && sourceUrl.trim() ? (
+              <button
+                type="button"
+                className="scene-source-control"
+                aria-label="Развернуть облако точек"
+                onClick={() => observationLayout.setFocusedSourceId(pointCloudSource.id)}
+              >
+                <Icon name="expand" size={16} />
+              </button>
+            ) : null}
+          </div>
+        ) : null}
+
+        <div
+          className="scene-status scene-status--top-left"
+          aria-hidden={pointCloudFocused || floatingSourceMaximized}
+        >
           <span className="section-eyebrow">ВИЗУАЛЬНЫЙ ДВИЖОК</span>
           <StatusBadge tone={viewerStatusTone}>{viewerStatusLabel}</StatusBadge>
           {viewerMessage ? <small>{viewerMessage}</small> : null}
         </div>
 
-        <div className="scene-metrics" aria-label="Метрики пространственной сцены">
+        <div
+          className="scene-metrics"
+          aria-label="Метрики пространственной сцены"
+          aria-hidden={pointCloudFocused || floatingSourceMaximized}
+        >
           <div>
             <span>КАДР/С</span>
             <strong>{formatNumber(frameRate)}</strong>
@@ -313,7 +392,7 @@ function SpatialWorkspace({
           </div>
         </div>
 
-        {state?.sourceMode && state.sourceMode !== "idle" && !sourceUrl.trim() ? (
+        {!pointCloudFocused && !floatingSourceMaximized && state?.sourceMode && state.sourceMode !== "idle" && !sourceUrl.trim() ? (
           <div className="scene-adapter-note">
             <Icon name="alert" />
             <span>
@@ -323,7 +402,7 @@ function SpatialWorkspace({
           </div>
         ) : null}
 
-        {selection ? (
+        {!pointCloudFocused && !floatingSourceMaximized && selection ? (
           <div className="scene-selection">
             <span>Выбрано</span>
             <strong>{selection.entityPath}</strong>
@@ -331,21 +410,33 @@ function SpatialWorkspace({
           </div>
         ) : null}
 
-        <div className="scene-timeline">
-          <Button size="compact" variant="ghost" disabled={viewerStatus !== "ready"} aria-label="Перейти к началу">
-            <Icon name="chevron-left" />
-          </Button>
-          <Button size="compact" variant="secondary" disabled={viewerStatus !== "ready"}>
-            Воспроизвести
-          </Button>
-          <div className="scene-timeline__track" data-disabled={viewerStatus !== "ready" ? "true" : undefined}>
-            <span style={{ width: viewerStatus === "ready" ? "8%" : "0%" }} />
-          </div>
-          <code>{viewerStatus === "ready" ? "00:00:00.000" : "—:—:—.———"}</code>
-          <span className="scene-timeline__follow" data-active={viewerStatus === "ready" ? "true" : undefined}>
-            ЭФИР
-          </span>
-        </div>
+        {!pointCloudFocused && !floatingSourceMaximized ? (
+          <ObservationTimeline
+            active={viewerStatus === "ready"}
+            sourceCount={Math.max(1, 1 + visibleMediaSources.length)}
+            mode={timeline?.mode}
+            seekable={timeline?.seekable}
+            synchronization={timeline?.synchronization}
+            className="scene-timeline"
+          />
+        ) : null}
+
+        {!pointCloudFocused ? visibleMediaSources.map((source, index) => (
+          <FloatingObservationWindow
+            key={source.id}
+            source={source}
+            index={index}
+            boundsRef={viewportRef}
+            rect={observationLayout.windowRects[source.id]}
+            maximized={observationLayout.maximizedFloatingSourceId === source.id}
+            active={observationLayout.activeFloatingSourceId === source.id}
+            onRectChange={(rect) => observationLayout.setWindowRect(source.id, rect)}
+            onMaximizedChange={(maximized) =>
+              observationLayout.setFloatingMaximized(source.id, maximized)}
+            onActivate={() => observationLayout.activateFloatingSource(source.id)}
+            onClose={() => observationLayout.hideSource(source.id)}
+          />
+        )) : null}
       </div>
 
       <div className="spatial-contract-strip">
@@ -360,31 +451,85 @@ function SpatialWorkspace({
   );
 }
 
-function CamerasWorkspace({ definition }: WorkspaceRendererProps) {
-  const slots = ["Панорама", "Камера 01", "Камера 02", "Глубина"];
+function CameraSourceCard({
+  source,
+  focused,
+  onFocus,
+}: {
+  source: ObservationSourceDescriptor;
+  focused: boolean;
+  onFocus: () => void;
+}) {
   return (
-    <div className="standard-workspace cameras-workspace">
-      <WorkspaceLead definition={definition} note="Кадры не подменяются демонстрационным видео" />
-      <div className="camera-grid">
-        {slots.map((slot, index) => (
-          <div className="camera-slot" key={slot} data-primary={index === 0 ? "true" : undefined}>
-            <div className="camera-slot__grid" aria-hidden="true" />
-            <header>
-              <span>{slot}</span>
-              <StatusBadge tone="neutral">Канал не назначен</StatusBadge>
-            </header>
-            <div className="camera-slot__empty">
-              <Icon name={index === 3 ? "image" : "video"} />
-              <span>{index === 3 ? "Ожидается карта глубины" : "Ожидается поток изображения"}</span>
-            </div>
-            <footer>
-              <span>{index === 0 ? "360° / эквидистантная" : index === 3 ? "глубина / метры" : "перспективная / калибровка"}</span>
-              <button type="button" disabled aria-label={`Настроить ${slot}`}><Icon name="sliders" /></button>
-            </footer>
-          </div>
-        ))}
+    <article className="camera-slot" data-focused={focused ? "true" : undefined}>
+      <header>
+        <span>{source.label}</span>
+        <div className="camera-slot__head-actions">
+          <span className="camera-slot__status">
+            <i data-availability={source.availability} aria-hidden="true" />
+            {observationSourceStatusLabel(source)}
+          </span>
+          {source.capabilities.fullscreen ? (
+            <button
+              type="button"
+              aria-label={focused ? `Свернуть ${source.label}` : `Развернуть ${source.label}`}
+              onClick={onFocus}
+            >
+              <Icon name={focused ? "minimize" : "expand"} size={15} />
+            </button>
+          ) : null}
+        </div>
+      </header>
+      <div className="camera-slot__body">
+        <ObservationMedia source={source} />
       </div>
-      <FeatureInventory definition={definition} />
+      <footer>
+        <span>{source.description}</span>
+        <small>{source.endpointLabel || source.transport}</small>
+      </footer>
+    </article>
+  );
+}
+
+function CamerasWorkspace({ definition, state, observationLayout }: WorkspaceRendererProps) {
+  const sources = (state?.observationSources ?? []).filter(
+    (source) => source.modality === "video" || source.modality === "image" || source.modality === "depth",
+  );
+  const focusedSource = sources.find((source) => source.id === observationLayout.focusedSourceId) ?? null;
+  const timeline = state?.observationTimeline;
+  const displayedSources = focusedSource ? [focusedSource] : sources;
+  return (
+    <div className="standard-workspace cameras-workspace" data-focused={focusedSource ? "true" : undefined}>
+      <WorkspaceLead definition={definition} note="Кадры не подменяются демонстрационным видео" />
+      <div className="camera-workspace__catalog">
+        <span>{sources.length ? `${sources.length} визуальных каналов` : "Каталог источников пуст"}</span>
+      </div>
+      <div className="camera-grid" data-count={displayedSources.length}>
+        {displayedSources.length ? displayedSources.map((source) => (
+          <CameraSourceCard
+            key={source.id}
+            source={source}
+            focused={focusedSource?.id === source.id}
+            onFocus={() => observationLayout.setFocusedSourceId(
+              focusedSource?.id === source.id ? null : source.id,
+            )}
+          />
+        )) : (
+          <div className="camera-grid__empty">
+            <Icon name="video" size={22} />
+            <strong>Камеры не объявлены</strong>
+            <span>Выберите модель устройства — плагин опубликует доступные видеоканалы.</span>
+          </div>
+        )}
+      </div>
+      <ObservationTimeline
+        active={sources.some((source) => source.availability === "streaming")}
+        sourceCount={sources.length}
+        mode={timeline?.mode}
+        seekable={timeline?.seekable}
+        synchronization={timeline?.synchronization}
+        className="camera-timeline"
+      />
     </div>
   );
 }
diff --git a/apps/control-station/test/observationSources.test.mjs b/apps/control-station/test/observationSources.test.mjs
new file mode 100644
index 0000000..6c5fcfe
--- /dev/null
+++ b/apps/control-station/test/observationSources.test.mjs
@@ -0,0 +1,197 @@
+import assert from "node:assert/strict";
+import { after, before, test } from "node:test";
+
+import { createServer } from "vite";
+
+let server;
+let xgridsK1Manifest;
+let xgridsK1ObservationSources;
+
+before(async () => {
+  server = await createServer({
+    appType: "custom",
+    logLevel: "silent",
+    server: { middlewareMode: true },
+  });
+  ({ xgridsK1Manifest } = await server.ssrLoadModule(
+    "/src/device-plugins/xgrids-k1/manifest.ts",
+  ));
+  ({ xgridsK1ObservationSources } = await server.ssrLoadModule(
+    "/src/device-plugins/xgrids-k1/observationSources.ts",
+  ));
+});
+
+after(async () => {
+  await server?.close();
+});
+
+function model() {
+  const activeModel = xgridsK1Manifest.spec.models[0];
+  assert.ok(activeModel, "XGRIDS plugin must declare at least one model");
+  return activeModel;
+}
+
+function declaredState() {
+  const activeModel = model();
+  return {
+    phase: "connected",
+    source_mode: "idle",
+    k1_ip: "192.168.7.10",
+    foxglove_ws_url: "ws://192.168.7.10:8765",
+    foxglove_viewer_url: "http://192.168.7.10:8765/vendor-viewer",
+    compatibility: {
+      profile_id: "xgrids.lixelkity-k1.fw-3.0.2.direct-lan.v1",
+      camera_preview: "rtsp://192.168.7.10:8554/vendor-preview",
+    },
+    device_ref: {
+      device_id: "device-k1-001",
+      model_id: activeModel.id,
+      identity_stability: "stable",
+      identity_basis: "hardware-identifier",
+    },
+    device_session: {
+      device_session_id: "device-session-001",
+      device_id: "device-k1-001",
+      compatibility_profile_id: "xgrids.lixelkity-k1.fw-3.0.2.direct-lan.v1",
+      connectivity: "connected",
+    },
+    sensor_catalog: {
+      schema_version: "missioncore.sensor-catalog/v1alpha2",
+      revision: "test-profile",
+      streams: [
+        { stream_id: "spatial.point-cloud.live", modality: "point-cloud", availability: "observed" },
+        { stream_id: "camera.preview.live", modality: "encoded-video", availability: "observed" },
+      ],
+    },
+  };
+}
+
+function streamingState() {
+  return {
+    ...declaredState(),
+    phase: "streaming",
+    source_mode: "live",
+    rerun_grpc_url: "rerun+http://127.0.0.1:9877/proxy",
+    acquisition: {
+      acquisition_id: "acquisition-001",
+      device_id: "device-k1-001",
+      device_session_id: "device-session-001",
+      compatibility_profile_id: "xgrids.lixelkity-k1.fw-3.0.2.direct-lan.v1",
+      control_mode: "operator-manual",
+      requested_streams: ["spatial.point-cloud.live"],
+      target_host: "127.0.0.1",
+      duration_seconds: 0,
+      evidence_policy: "required",
+      state: "acquiring",
+      state_revision: 3,
+    },
+  };
+}
+
+function collectUrlLikeStrings(value, found = []) {
+  if (typeof value === "string") {
+    if (value.includes("://")) found.push(value);
+    return found;
+  }
+  if (Array.isArray(value)) {
+    for (const item of value) collectUrlLikeStrings(item, found);
+    return found;
+  }
+  if (value && typeof value === "object") {
+    for (const item of Object.values(value)) collectUrlLikeStrings(item, found);
+  }
+  return found;
+}
+
+test("K1 maps to one primary point cloud and two auxiliary camera channels", () => {
+  const sources = xgridsK1ObservationSources(declaredState(), model());
+
+  assert.equal(sources.length, 3);
+  assert.deepEqual(
+    sources.map(({ sourceId, semanticChannelId, modality, role }) => ({
+      sourceId,
+      semanticChannelId,
+      modality,
+      role,
+    })),
+    [
+      {
+        sourceId: "sensor.lidar.primary",
+        semanticChannelId: "spatial.point-cloud.live",
+        modality: "point-cloud",
+        role: "primary",
+      },
+      {
+        sourceId: "sensor.camera.left",
+        semanticChannelId: "camera.preview.live",
+        modality: "video",
+        role: "auxiliary",
+      },
+      {
+        sourceId: "sensor.camera.right",
+        semanticChannelId: "camera.preview.live",
+        modality: "video",
+        role: "auxiliary",
+      },
+    ],
+  );
+
+  assert.equal(new Set(sources.map(({ id }) => id)).size, sources.length);
+  assert.ok(sources.every(({ provider }) => provider.pluginId && provider.modelId));
+  assert.ok(sources.every(({ provider }) => provider.pluginVersion));
+  assert.ok(sources.every(({ binding }) => binding.deviceId === "device-k1-001"));
+  assert.ok(sources.every(({ capabilities }) => capabilities.timelineMode === "live-only"));
+});
+
+test("observation source ids remain stable while runtime availability changes", () => {
+  const declared = xgridsK1ObservationSources(declaredState(), model());
+  const streaming = xgridsK1ObservationSources(streamingState(), model());
+
+  assert.deepEqual(
+    streaming.map(({ id }) => id),
+    declared.map(({ id }) => id),
+  );
+  assert.equal(declared[0].availability, "available");
+  assert.equal(streaming[0].availability, "streaming");
+  assert.equal(streaming[0].previewUrl, "rerun+http://127.0.0.1:9877/proxy");
+});
+
+test("camera descriptors stay declared and URL-free until a browser delivery adapter exists", () => {
+  const sources = xgridsK1ObservationSources(streamingState(), model());
+  const cameras = sources.filter(({ modality }) => modality === "video");
+
+  assert.equal(cameras.length, 2);
+  for (const camera of cameras) {
+    assert.equal(camera.availability, "declared");
+    assert.equal(camera.transport, "rtsp");
+    assert.equal(camera.previewUrl, null);
+    assert.equal(camera.capabilities.spatialRegistration, "unresolved");
+    assert.equal(camera.capabilities.resizable, true);
+    assert.doesNotMatch(camera.endpointLabel ?? "", /:\/\//);
+  }
+
+  assert.deepEqual(collectUrlLikeStrings(sources), [
+    "rerun+http://127.0.0.1:9877/proxy",
+  ]);
+  const serialized = JSON.stringify(sources);
+  assert.doesNotMatch(serialized, /rtsp:\/\//i);
+  assert.doesNotMatch(serialized, /192\.168\.7\.10/);
+  assert.doesNotMatch(serialized, /vendor-(?:preview|viewer)/);
+});
+
+test("unattested camera catalog entries remain unverified", () => {
+  const state = declaredState();
+  state.compatibility.profile_id = null;
+  state.device_session.compatibility_profile_id = null;
+  state.sensor_catalog.streams = state.sensor_catalog.streams.map((stream) =>
+    stream.stream_id === "camera.preview.live"
+      ? { ...stream, availability: "unverified", decode_status: "profile-not-attested" }
+      : stream);
+
+  const cameras = xgridsK1ObservationSources(state, model()).filter(
+    ({ modality }) => modality === "video",
+  );
+  assert.equal(cameras.length, 2);
+  assert.ok(cameras.every(({ availability }) => availability === "unverified"));
+  assert.ok(cameras.every(({ previewUrl }) => previewUrl === null));
+});
diff --git a/docs/adr/0006-vendor-neutral-observation-sources-and-live-only-timeline.md b/docs/adr/0006-vendor-neutral-observation-sources-and-live-only-timeline.md
new file mode 100644
index 0000000..5eace81
--- /dev/null
+++ b/docs/adr/0006-vendor-neutral-observation-sources-and-live-only-timeline.md
@@ -0,0 +1,78 @@
+# ADR 0006: Vendor-neutral observation sources and live-only timeline
+
+Status: accepted for the experimental Mission Core runtime, 2026-07-16.
+
+## Context
+
+The spatial scene and camera workspace must accept one device, a custom rig or a
+future multi-sensor vehicle without adding vendor-specific branches to the host
+UI. The currently verified K1 profile exposes one spatial visualization path and
+two independent H.264 camera preview producers. The browser does not yet have a
+camera delivery adapter, a shared point-cloud/video clock or confirmed camera
+intrinsics/extrinsics.
+
+Hard-coded camera slots, direct RTSP URLs in React components and an apparently
+seekable timeline would therefore create three false contracts: a fixed sensor
+count, browser ownership of device transport and replay that does not exist.
+
+## Decision
+
+1. A device plugin normalizes its capabilities into
+   `ObservationSourceDescriptor[]`. Mission Core consumes only these generic
+   descriptors.
+2. `id` identifies a runtime source instance; `sourceId` identifies the producer
+   inside the plugin model; `semanticChannelId` describes the canonical channel.
+   Transport addresses are not identities.
+3. Provider metadata and device/session/acquisition binding are separate. A new
+   acquisition may change layout context without changing the logical producer.
+4. The host owns visibility, z-order, position, resize and fullscreen. A plugin
+   cannot inject global layout behavior.
+5. Direct device RTSP URLs do not cross into the generic UI. A future read-only
+   camera adapter must publish a browser-decodable local delivery URL.
+6. Until a bounded buffer and clock mapping exist, the shared timeline is
+   `live-only`, `seekable=false`, `sessionRecording=false` and explicitly marked
+   `host-arrival-best-effort`.
+7. Directional 3D camera frustums are not rendered until calibration and
+   extrinsics are available and verified. An unresolved camera may be listed as
+   a source, but its orientation must not be invented.
+
+## Current K1 mapping
+
+| Producer | Canonical channel | Host representation |
+| --- | --- | --- |
+| `sensor.lidar.primary` | `spatial.point-cloud.live` | primary Rerun viewport |
+| `sensor.camera.left` | `camera.preview.live` | auxiliary media window / camera card |
+| `sensor.camera.right` | `camera.preview.live` | auxiliary media window / camera card |
+
+Both camera producers share the proven canonical channel and remain distinct by
+`sourceId`. Their current state is `declared`: the compatibility profile proves
+the channels, but no browser preview URL is advertised yet.
+
+## UI consequences
+
+- The spatial scene source picker renders any number of plugin-published sources.
+- Auxiliary media uses the design-system `WorkspaceWindow`, constrained to the
+  scene bounds, with controlled drag, resize, close and maximize state.
+- The Cameras workspace filters media modalities and renders 0, 1, 2 or N cards;
+  only its grid scrolls when the source count exceeds available space.
+- Point-cloud focus and camera focus stay inside the application panel rather
+  than taking over the browser viewport.
+- Empty and declared channels remain honest placeholders; no demo frames or
+  synthetic sensor values are substituted.
+
+## Follow-up gate
+
+The next implementation step is a plugin-owned, read-only H.264 adapter that
+terminates RTSP/RTP locally and exposes a browser-supported stream plus measured
+per-source metrics. Synchronized rewind becomes eligible only after the adapter
+provides bounded buffering and an evidenced mapping between the RTP 90 kHz clock
+and the spatial stream clock.
+
+## Code anchors
+
+- `apps/control-station/src/core/runtime/contracts.ts`
+- `apps/control-station/src/core/observation/useObservationLayout.ts`
+- `apps/control-station/src/components/ObservationSources.tsx`
+- `apps/control-station/src/components/ObservationTimeline.tsx`
+- `apps/control-station/src/workspaces/Workspaces.tsx`
+- `apps/control-station/src/device-plugins/xgrids-k1/observationSources.ts`