Restore an archived workspace when its agent is reopened

Reopening an archived agent previously dead-ended at "workspace not
found": the agent record was un-archived but its workspace stayed
archived and was never sent to the client.

The daemon now un-archives the owning workspace alongside the agent when
its backing directory still exists, and the app auto-fires the restore
ahead of the missing-workspace gate so the user lands back in the
workspace rather than a dead end.

Worktrees whose directory was deleted on archive are not yet restorable
(recreating them from their branch is a follow-up); the workspace record
now persists its base branch as groundwork for that.

packages/app/src/i18n/resources/es.ts

@@ -331,6 +331,9 @@ export const es: TranslationResources = {
   workspace: {
     route: {
       loading: "Cargando espacio de trabajo",
+      restoring: "Restaurando espacio de trabajo",
+      restoreFailed:
+        "No se pudo restaurar este espacio de trabajo — es posible que el directorio se haya movido o eliminado",
       connecting: "Conectando",
       hostOffline: "{{hostName}}está desconectado",
       cannotReachHost: "No se puede alcanzar{{hostName}}",