feat: show modal on quest completing

TODO: use setTimeout for now
need to change to capture user's activity in container in the future

server/src/game/sessionHandler.js

@@ -50,6 +50,7 @@ export default class SessionHandler {
     if (stage.id === 'END') {
       this.session.status = 'finished'
       this.session.finishedAt = new Date()
+      pushToSession(this.session.id, 'status', 'finished')
     }
 
     this.addNewTasks()