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/components/ObservationSources.tsx

@@ -14,6 +14,7 @@ import type {
   RecordedAdmissionPhase,
   RecordedCameraAdmissionState,
 } from "../core/observation/recordedSessionAdmission";
+import { liveCameraPlaybackAuthorityIdentity } from "../core/observation/liveCameraRecovery";
 
 const sourceIcon: Record<ObservationSourceModality, IconName> = {
   "point-cloud": "globe",
@@ -63,7 +64,13 @@ export function ObservationMedia({
     source.delivery?.kind === "mse-fmp4-websocket" &&
     source.modality === "video"
   ) {
-    return <MseFmp4WebSocketPlayer delivery={source.delivery} label={source.label} />;
+    return (
+      <MseFmp4WebSocketPlayer
+        delivery={source.delivery}
+        label={source.label}
+        recoveryAuthorityIdentity={liveCameraPlaybackAuthorityIdentity(source)}
+      />
+    );
   }
 
   if (