feat(backup): Add backup system: BackupManager, DB schema, API endpoints and UI support

Introduce a complete service backup/restore subsystem with encrypted archives, database records and REST endpoints. Implements BackupManager with export/import for service config, platform resources (MongoDB, MinIO, ClickHouse), and Docker images; adds BackupRepository and migrations for backups table and include_image_in_backup; integrates backup flows into the HTTP API and the UI client; exposes backup password management and restore modes (restore/import/clone). Wire BackupManager into Onebox initialization.

ts/types.ts

@@ -23,6 +23,8 @@ export interface IService {
   imageDigest?: string;
   // Platform service requirements
   platformRequirements?: IPlatformRequirements;
+  // Backup settings
+  includeImageInBackup?: boolean;
 }
 
 // Registry types
@@ -317,3 +319,68 @@ export interface ICliArgs {
   _: string[];
   [key: string]: unknown;
 }
+
+// Backup types
+export type TBackupRestoreMode = 'restore' | 'import' | 'clone';
+
+export interface IBackup {
+  id?: number;
+  serviceId: number;
+  serviceName: string;  // Denormalized for display
+  filename: string;
+  sizeBytes: number;
+  createdAt: number;
+  includesImage: boolean;
+  platformResources: TPlatformServiceType[];  // Which platform types were backed up
+  checksum: string;
+}
+
+export interface IBackupManifest {
+  version: string;
+  createdAt: number;
+  oneboxVersion: string;
+  serviceName: string;
+  includesImage: boolean;
+  platformResources: TPlatformServiceType[];
+  checksum: string;
+}
+
+export interface IBackupServiceConfig {
+  name: string;
+  image: string;
+  registry?: string;
+  envVars: Record<string, string>;
+  port: number;
+  domain?: string;
+  useOneboxRegistry?: boolean;
+  registryRepository?: string;
+  registryImageTag?: string;
+  autoUpdateOnPush?: boolean;
+  platformRequirements?: IPlatformRequirements;
+  includeImageInBackup?: boolean;
+}
+
+export interface IBackupPlatformResource {
+  resourceType: TPlatformResourceType;
+  resourceName: string;
+  platformServiceType: TPlatformServiceType;
+  credentials: Record<string, string>;  // Decrypted for backup, re-encrypted on restore
+}
+
+export interface IBackupResult {
+  backup: IBackup;
+  filePath: string;
+}
+
+export interface IRestoreOptions {
+  mode: TBackupRestoreMode;
+  newServiceName?: string;  // Required for 'import' and 'clone' modes
+  skipPlatformData?: boolean;  // Restore config only, skip DB/bucket data
+  overwriteExisting?: boolean; // For 'restore' mode
+}
+
+export interface IRestoreResult {
+  service: IService;
+  platformResourcesRestored: number;
+  warnings: string[];
+}