fix(ui): подтверждать удаление пользователя и сохранять ошибку

tests/e2e/fixtures/users.ts

@@ -0,0 +1,2 @@
+export const user={id:"u-test",name:"Настоящий пользователь",login:"test@example.test",email:"test@example.test",role:"viewer",active:true,avatar:"НП",lastSeen:null,sections:[],servers:[],bindings:[],createdAt:"2026-10-01T00:00:00Z",updatedAt:"2026-10-01T00:00:00Z"}
+export const server={id:1,name:"Роутер",host:"192.0.2.1",port:443,useSsl:true,verifySsl:false,username:"admin",password:"",type:"exit-node",site:"",country:"RU",asn:"",comment:"",enabled:true,lanSubnet:"",wanUplinks:[],createdAt:"",updatedAt:"",status:null,latency:null,os:null,model:null,uptime:null,cpuLoad:null,freeMemory:null,totalMemory:null,identityName:null,sessions:0,polledAt:null}