feat(update): add Onebox self-upgrade flow

ts_interfaces/data/system.ts

@@ -4,7 +4,30 @@
 
 import type { TPlatformServiceType, TPlatformServiceStatus } from './platform.ts';
 
+export interface IOneboxUpdateStatus {
+  currentVersion: string;
+  latestVersion: string | null;
+  updateAvailable: boolean;
+  checkedAt: number;
+  releaseUrl: string;
+  changelogUrl: string;
+  error?: string;
+}
+
+export interface IOneboxUpgradeStartResult {
+  accepted: boolean;
+  currentVersion: string;
+  targetVersion: string;
+  message: string;
+  pid?: number;
+  logPath?: string;
+}
+
 export interface ISystemStatus {
+  onebox: {
+    version: string;
+    update: IOneboxUpdateStatus;
+  };
   docker: {
     running: boolean;
     version: unknown;