wip(k1): checkpoint connection recovery rewrite

Capture the current unreleased K1 connection, recovery, lifecycle, viewer, and test work as a single known-bad baseline for subsequent fixes.

apps/control-station/src/workspaces/ContourHealthWorkspace.tsx

@@ -37,6 +37,25 @@ interface ContourSnapshot {
   error: string | null;
 }
 
+export function contourRuntimeAuthorityPresentation(
+  state: MissionRuntimeState | null,
+) {
+  const deviceControlConnectivity = state?.deviceSession?.connectivity ?? null;
+  return {
+    aiActive: Boolean(
+      state?.sourceMode === "live"
+      && state.phase === "streaming"
+      && state.metrics?.aiFrameRateHz
+      && state.metrics.aiFrameRateHz > 0
+    ),
+    deviceControlConnectivity,
+    controlledDevice: state?.activeDevice
+      && (deviceControlConnectivity === "connected" || deviceControlConnectivity === "degraded")
+      ? state.activeDevice
+      : null,
+  };
+}
+
 function validControlPlaneHealth(value: unknown): value is ControlPlaneHealth {
   if (!value || typeof value !== "object") return false;
   const item = value as Partial<ControlPlaneHealth>;
@@ -155,16 +174,16 @@ export function ContourHealthWorkspace({
     return () => window.clearInterval(timer);
   }, [refresh]);
 
-  const aiActive = Boolean(
-    state?.metrics?.aiFrameRateHz
-    && state.metrics.aiFrameRateHz > 0,
-  );
+  const {
+    aiActive,
+    deviceControlConnectivity,
+    controlledDevice,
+  } = contourRuntimeAuthorityPresentation(state);
   const simulationWorker = snapshot?.simulationWorker ?? null;
   const controlPlaneReady = Boolean(snapshot?.controlPlane?.ok);
   const runtimeReady = snapshot?.pluginRuntimes.filter(
     (runtime) => runtime.status === "ready",
   ).length ?? 0;
-  const connectedDevice = state?.activeDevice ?? null;
   const processCount = (snapshot?.pluginRuntimes.length ?? 0) + 2;
   const readyProcessCount = runtimeReady
     + (controlPlaneReady ? 1 : 0)
@@ -325,11 +344,16 @@ export function ContourHealthWorkspace({
         </div>
       </section>
 
-      {connectedDevice ? (
+      {controlledDevice ? (
         <section className="contour-connected-device">
-          <span className="section-eyebrow">ПОДКЛЮЧЁННОЕ УСТРОЙСТВО</span>
-          <strong>{connectedDevice.displayName}</strong>
-          <small>{connectedDevice.endpointLabel ?? connectedDevice.modelId}</small>
+          <span className="section-eyebrow">ПОДТВЕРЖДЁННАЯ УПРАВЛЯЮЩАЯ СЕССИЯ</span>
+          <strong>{controlledDevice.displayName}</strong>
+          <small>
+            {controlledDevice.endpointLabel ?? controlledDevice.modelId}
+            {deviceControlConnectivity === "degraded"
+              ? " · управление подтверждено, поток данных нарушен"
+              : " · управление подтверждено"}
+          </small>
         </section>
       ) : null}
 

apps/control-station/src/workspaces/DeviceWorkspace.tsx

@@ -101,9 +101,8 @@ export function DeviceWorkspace({
     <div className="device-plugin-slot">
       <div className="device-plugin-slot__bar">
         <div>
-          <span className="section-eyebrow">АКТИВНАЯ МОДЕЛЬ</span>
-          <strong>{selection.model.displayName}</strong>
-          <small>{selection.plugin.manifest.metadata.displayName} · v{selection.plugin.manifest.metadata.version}</small>
+          <span className="section-eyebrow">СЦЕНАРИЙ ПОДКЛЮЧЕНИЯ</span>
+          <strong>Модель выбрана</strong>
           {selectionTransitionError ? (
             <small className="device-plugin-slot__error" role="alert">
               {selectionTransitionError}

apps/control-station/src/workspaces/Workspaces.tsx

@@ -16,6 +16,7 @@ import type {
   RecordedAdmissionPhase,
   RecordedCameraAdmissionState,
 } from "../core/observation/recordedSessionAdmission";
+import { liveRerunRecoveryAuthorityIdentity } from "../core/observation/liveReceiverWatchdog";
 import type { ObservationSourceDescriptor } from "../core/runtime/contracts";
 import {
   RerunViewport,
@@ -490,12 +491,14 @@ function SpatialWorkspace({
         data-primary-focused={pointCloudFocused ? "true" : undefined}
         data-media-maximized={floatingSourceMaximized ? "true" : undefined}
       >
-          {sourceUrl.trim() && pointCloudVisible ? (
+          {sourceUrl.trim() && pointCloudVisible && !intentionalSourceEnd ? (
             <RerunViewport
               sourceUrl={sourceUrl}
               recordedArtifact={recordedSource ? recordedReplay : null}
               followLive={!recordedReplay && streamActive}
-              liveActivitySequence={metrics?.publishedFrameCount} liveStreamId={state?.spatialSource?.id}
+              liveActivitySequence={metrics?.publishedFrameCount}
+              liveStreamId={state?.spatialSource?.id}
+              liveRecoveryAuthorityIdentity={!recordedSource && streamActive ? liveRerunRecoveryAuthorityIdentity(pointCloudSource, state?.spatialSource) : null}
               autoplayWhenReady={recordedSource}
               presentationGate={recordedSessionGate}
               expectedTimelineStartSeconds={recordedSource