fix(archive): preserve prepared sessions across restarts

apps/control-station/src/components/ObservationSessionSelect.tsx

@@ -11,7 +11,7 @@ import type {
 } from "../core/observation/useObservationSessions";
 import "../styles/observation-sessions.css";
 
-type SessionVisualState = "ready" | "processing" | "error";
+type SessionVisualState = "ready" | "processing" | "cold" | "error";
 
 export function observationSessionVisualState(
   session: ObservationSessionSummary,
@@ -26,12 +26,14 @@ export function observationSessionVisualState(
     if (session.preparation.state === "ready" && session.replayable) return "ready";
     return "error";
   }
-  return session.status === "recording" ? "processing" : "error";
+  if (session.status === "recording") return "processing";
+  return session.replayable ? "cold" : "error";
 }
 
 export function observationSessionVisualLabel(state: SessionVisualState): string {
   if (state === "ready") return "Готово";
   if (state === "processing") return "Обработка";
+  if (state === "cold") return "Подготовить";
   return "Ошибка";
 }
 

apps/control-station/src/styles/observation-sessions.css

@@ -137,8 +137,12 @@
   animation: observation-session-processing 1.1s ease-in-out infinite;
 }
 
+.observation-session-option i[data-session-visual-state="cold"],
 .observation-session-option i[data-session-visual-state="error"] {
   background: var(--nodedc-text-muted);
+}
+
+.observation-session-option i[data-session-visual-state="error"] {
   opacity: 0.48;
 }