feat(update): add Onebox self-upgrade flow

ts/classes/onebox.ts

@@ -5,6 +5,7 @@
  */
 
 import { logger } from '../logging.ts';
+import { projectInfo } from '../info.ts';
 import { getErrorMessage } from '../utils/error.ts';
 import { hashPassword } from '../utils/auth.ts';
 import { OneboxDatabase } from './database.ts';
@@ -26,6 +27,7 @@ import { BackupManager } from './backup-manager.ts';
 import { BackupScheduler } from './backup-scheduler.ts';
 import { ExternalGatewayManager } from './external-gateway.ts';
 import { ManagedDcRouterManager } from './managed-dcrouter.ts';
+import { OneboxUpdateManager } from './update-manager.ts';
 import { OpsServer } from '../opsserver/index.ts';
 
 export class Onebox {
@@ -48,6 +50,7 @@ export class Onebox {
   public backupScheduler: BackupScheduler;
   public managedDcRouter: ManagedDcRouterManager;
   public externalGateway: ExternalGatewayManager;
+  public updateManager: OneboxUpdateManager;
   public opsServer: OpsServer;
 
   private initialized = false;
@@ -93,6 +96,7 @@ export class Onebox {
     // Initialize optional dcrouter gateway integration
     this.managedDcRouter = new ManagedDcRouterManager(this);
     this.externalGateway = new ExternalGatewayManager(this);
+    this.updateManager = new OneboxUpdateManager();
 
     // Initialize OpsServer (TypedRequest-based server)
     this.opsServer = new OpsServer(this);
@@ -305,6 +309,7 @@ export class Onebox {
       const proxyStatus = this.reverseProxy.getStatus();
       const dnsConfigured = this.dns.isConfigured();
       const sslConfigured = this.ssl.isConfigured();
+      const oneboxUpdate = await this.updateManager.getUpdateStatus();
 
       const services = this.services.listServices();
       const runningServices = services.filter((s) => s.status === 'running').length;
@@ -407,6 +412,10 @@ export class Onebox {
       }
 
       return {
+        onebox: {
+          version: projectInfo.version,
+          update: oneboxUpdate,
+        },
         docker: {
           running: dockerRunning,
           version: dockerRunning ? await this.docker.getDockerVersion() : null,