fix(ui): ограничить каталог бэкапов и вернуть фокус действий

app/(main)/backups/page.tsx

@@ -74,6 +74,24 @@ function BackupsContent() {
   const canWrite = isLive && can("mm:backups:write")
   const canReadServers = can("mm:servers:read")
   const [resources, setResources] = useState<Record<Resource, ResourceState>>(() => ({ backups: unknownResource(), servers: unknownResource(), schedule: unknownResource(), storage: unknownResource() }))
+  const dialogTrigger = useRef<{ element: HTMLElement; rowId: string | null; label: string | null } | null>(null)
+  const refreshTrigger = useRef<HTMLButtonElement | null>(null)
+  const captureDialogFocus = () => {
+    const element = document.activeElement
+    dialogTrigger.current = element instanceof HTMLElement
+      ? { element, rowId: element.closest("[data-row-id]")?.getAttribute("data-row-id") ?? null, label: element.getAttribute("aria-label") }
+      : null
+  }
+  const returnDialogFocus = () => {
+    const trigger = dialogTrigger.current
+    if (trigger?.element.isConnected) return trigger.element
+    // Cell renderers can remount when operation state changes; resolve the same row/action.
+    if (trigger?.rowId && trigger.label) {
+      const replacement = document.querySelector<HTMLElement>(`[data-row-id="${CSS.escape(trigger.rowId)}"] button[aria-label="${CSS.escape(trigger.label)}"]`)
+      if (replacement) return replacement
+    }
+    return refreshTrigger.current
+  }
   const reader = useRef<AbortController | null>(null)
   const revision = useRef(0)
   const alive = useRef(true)
@@ -403,7 +421,7 @@ function BackupsContent() {
           {!canRead && <p role="status">Нет права mm:backups:read</p>}
           {isLive && !canReadServers && <p role="status">Каталог устройств недоступен без mm:servers:read.</p>}
           {isLive && canRead && <div className="flex flex-wrap items-center gap-3 text-sm text-muted-foreground">
-            <Button type="button" variant="outline" size="sm" onClick={() => void loadLive()} disabled={loading || scheduleSaveBusy || opBusy}>Обновить</Button>
+            <Button type="button" variant="outline" size="sm" ref={refreshTrigger} onClick={() => void loadLive()} disabled={loading || scheduleSaveBusy || opBusy}>Обновить</Button>
             <span role="status">{loading ? "Обновление данных…" : resources.backups.receivedAt ? "Получено: " + new Date(resources.backups.receivedAt).toLocaleString("ru-RU") : "Резервные копии пока неизвестны"}</span>
           </div>}
           {isLive && (Object.keys(resources) as Resource[]).filter(resource => resources[resource].error).map(resource => <Alert key={resource} variant="warning" aria-label={"Данные резервных копий: " + resource}>
@@ -493,8 +511,8 @@ function BackupsContent() {
                 filters={advancedFilters}
                 onFiltersChange={setAdvancedFilters}
                 onDownload={handleDownload}
-                onRestore={backup => { setOpError(null); setRestoreTarget(backup) }}
-                onDelete={backup => { setOpError(null); setDeleteTarget(backup) }}
+                onRestore={backup => { captureDialogFocus(); setOpError(null); setRestoreTarget(backup) }}
+                onDelete={backup => { captureDialogFocus(); setOpError(null); setDeleteTarget(backup) }}
                 onCreate={() => openCreate(false)}
                 canCreate={canCreate}
                 canWrite={canWrite && !opBusy && !scheduleSaveBusy && !backupJobId}
@@ -578,6 +596,7 @@ function BackupsContent() {
       />
 
       <BackupDeleteDialog
+        returnFocus={returnDialogFocus}
         backup={deleteTarget}
         busy={opBusy}
         error={opError}
@@ -585,6 +604,7 @@ function BackupsContent() {
         onCancel={() => setDeleteTarget(null)}
       />
       <BackupRestoreDialog
+        returnFocus={returnDialogFocus}
         backup={restoreTarget}
         busy={opBusy}
         blocked={!restoreGuard.canStart}