fix(alerts): отклонять запись устаревшего снимка правил

shared/api/alerts.ts

@@ -1,13 +1,14 @@
 import {z} from "zod"
 import {normalizeAlertsConfig,alertsResponseSchema,alertsRulesReceiptSchema,telegramSettingsReceiptSchema,telegramTestReceiptSchema,putTelegramSchema,testTelegramSchema,type PutRulesBody,type PutTelegramBody,type TestTelegramBody} from "@mmapp/contracts/alerts"
 import {requestJson} from "./http-client"
-type Options={signal?:AbortSignal}
+type Options={signal?:AbortSignal;expectedRevision?:string}
 const signal=(options?:Options)=>{const active=options?.signal?AbortSignal.any([options.signal,AbortSignal.timeout(30_000)]):AbortSignal.timeout(30_000);active.throwIfAborted();return active}
 function parse<S extends z.ZodType>(schema:S,raw:unknown,message:string):z.output<S>{const result=schema.safeParse(raw);if(!result.success)throw Error(message);return result.data}
 export async function getAlerts(baseUrl:string,options?:Options){return parse(alertsResponseSchema,await requestJson<unknown>(baseUrl,"/api/alerts",{signal:signal(options),cache:"no-store"}),"Данные оповещений не подтверждены сервером")}
 export async function saveAlertRules(baseUrl:string,payload:PutRulesBody,options?:Options){
  const body=normalizeAlertsConfig(payload)
- const receipt=parse(alertsRulesReceiptSchema,await requestJson<unknown>(baseUrl,"/api/alerts/rules",{method:"PUT",body:JSON.stringify(body),signal:signal(options)}),"Сохранение правил не подтверждено сервером")
+ if(!options?.expectedRevision||!/^[a-f0-9]{64}$/.test(options.expectedRevision))throw Error("Обновите снимок правил перед сохранением")
+ const receipt=parse(alertsRulesReceiptSchema,await requestJson<unknown>(baseUrl,"/api/alerts/rules",{method:"PUT",headers:{"If-Match":'"'+options.expectedRevision+'"'},body:JSON.stringify(body),signal:signal(options)}),"Сохранение правил не подтверждено сервером")
  const same=(a:unknown,b:unknown)=>JSON.stringify(a)===JSON.stringify(b)
  if(receipt.rules.length!==body.rules.length||body.rules.some(rule=>{
   const saved=receipt.rules.find(row=>row.id===rule.id)