feat(backups): добавить S3-хранилище и обновить экран бэкапов

Сохранять снимки в S3-compatible бакет, скачивать и удалять их вместе с локальными файлами.
Привести /backups к DNA /servers: Frame, KPI, фильтры и реальное восстановление.

Co-authored-by: Cursor <[email protected]>

shared/api/backups.ts

@@ -1,15 +1,22 @@
 import { requestJson } from "@/shared/api/http-client"
-import type { BackupScheduleSettingsDto } from "@mmapp/contracts/backups"
+import type {
+  BackupScheduleSettingsDto,
+  BackupStorageSettingsDto,
+  PutBackupStorageSettings,
+} from "@mmapp/contracts/backups"
 
 export type BackupItem = {
   id: string
-  serverId: string
+  serverId: number | string | null
   serverName: string
   filename: string
   sizeBytes: number
   createdAt: string
   kind: "manual" | "auto"
   notes?: string
+  storage?: "local" | "s3" | "both"
+  s3Key?: string | null
+  uploadError?: string | null
 }
 
 type CreateBackupResponse = {
@@ -68,6 +75,12 @@ export async function deleteBackup(baseUrl: string, id: string): Promise<void> {
   await requestJson<void>(baseUrl, `/api/backups/${id}`, { method: "DELETE" })
 }
 
+export async function restoreBackup(baseUrl: string, id: string): Promise<{ filename: string; serverName: string }> {
+  return requestJson<{ filename: string; serverName: string }>(baseUrl, `/api/backups/${id}/restore`, {
+    method: "POST",
+  })
+}
+
 export async function getBackupScheduleSettings(baseUrl: string): Promise<BackupScheduleSettingsDto> {
   return requestJson<BackupScheduleSettingsDto>(baseUrl, "/api/backups/schedule")
 }
@@ -81,3 +94,29 @@ export async function putBackupScheduleSettings(
     body: JSON.stringify(payload),
   })
 }
+
+export async function getBackupStorageSettings(baseUrl: string): Promise<BackupStorageSettingsDto> {
+  return requestJson<BackupStorageSettingsDto>(baseUrl, "/api/backups/storage")
+}
+
+export async function putBackupStorageSettings(
+  baseUrl: string,
+  payload: PutBackupStorageSettings,
+): Promise<BackupStorageSettingsDto> {
+  return requestJson<BackupStorageSettingsDto>(baseUrl, "/api/backups/storage", {
+    method: "PUT",
+    body: JSON.stringify(payload),
+  })
+}
+
+export async function testBackupStorage(baseUrl: string): Promise<BackupStorageSettingsDto> {
+  return requestJson<BackupStorageSettingsDto>(baseUrl, "/api/backups/storage/test", { method: "POST" })
+}
+
+export async function syncBackupsFromStorage(
+  baseUrl: string,
+): Promise<{ imported: number; skipped: number }> {
+  return requestJson<{ imported: number; skipped: number }>(baseUrl, "/api/backups/storage/sync", {
+    method: "POST",
+  })
+}