fix(backups): показывать частичный результат внутри формы

lib/use-backup-job.ts

@@ -3,7 +3,7 @@ import { useEffect, useRef, useState } from "react"
 import type { CreateBackupRequest } from "@mmapp/contracts/backups"
 import { ApiClientError } from "@/shared/api/http-client"
 import { createBackupsAsync } from "@/shared/api/backups"
-import { pollBackupJob, backupJobOutcome } from "@/lib/backup-job-poll"
+import { pollBackupJob, backupJobOutcome, backupJobResultError } from "@/lib/backup-job-poll"
 import { backupJobStorageKey, createBackupJobCheckpoint, readBackupJobCheckpoint, type BackupJobCheckpoint } from "@/lib/backup-job-checkpoint"
 import { userApiError } from "@/shared/api/users"
 import { toast } from "sonner"
@@ -50,10 +50,7 @@ export function useBackupJob(backendUrl: string, live: boolean, canRead: boolean
    if (!active()) return
    const outcome = backupJobOutcome(result)
    if (outcome.fullSuccess) toast.success("API подтвердил создание всех резервных копий", { id: "backup-job-" + result.id })
-   else {
-    const failures = [...outcome.deviceFailures.map(failure => failure.serverId + ": " + failure.error), ...outcome.uploadFailures.map(file => file.filename + ": " + file.uploadError)]
-    setError("Создано " + outcome.created + " из " + result.total + ". " + (failures.join("; ") || "Задача завершилась с ошибкой"))
-   }
+   else setError(backupJobResultError(result))
    await onDone()
   } catch (reason) {
    if (!active()) return