feat(traffic): разделить плоскости IPFIX и показать путь JH→EN

Считать payload отдельно от overlay GRE/ESP и mesh; вкладка Пути и KPI Wire из счётчиков iface.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/services/system-database-backup.ts

@@ -4,7 +4,7 @@ import os from "node:os"
 import path from "node:path"
 import Database from "better-sqlite3"
 import { env } from "../config.js"
-import { reopenSqlite, sqliteDatabase } from "../db/index.js"
+import { beginSqliteExclusiveOp, endSqliteExclusiveOp, reopenSqlite, sqliteDatabase } from "../db/index.js"
 import { refreshScheduler, stopScheduler } from "./scheduler.js"
 import {
   reattachFlowSqlite,
@@ -17,8 +17,6 @@ const MAX_RESTORE_BYTES = 512 * 1024 * 1024
 
 type SqliteHandle = InstanceType<typeof Database>
 
-let operationInFlight = false
-
 function fmtTimestamp(date = new Date()): string {
   const pad = (n: number) => String(n).padStart(2, "0")
   return `${date.getFullYear()}-${pad(date.getMonth() + 1)}-${pad(date.getDate())}_${pad(date.getHours())}-${pad(date.getMinutes())}-${pad(date.getSeconds())}`
@@ -38,10 +36,7 @@ function assertSqliteFile(buffer: Buffer): void {
 }
 
 async function withDatabaseOperation<T>(fn: () => Promise<T> | T): Promise<T> {
-  if (operationInFlight) {
-    throw new Error("Операция с базой данных уже выполняется")
-  }
-  operationInFlight = true
+  beginSqliteExclusiveOp()
   stopTrafficFlowListener()
   stopScheduler()
   try {
@@ -49,7 +44,7 @@ async function withDatabaseOperation<T>(fn: () => Promise<T> | T): Promise<T> {
   } finally {
     startTrafficFlowListener()
     refreshScheduler()
-    operationInFlight = false
+    endSqliteExclusiveOp()
   }
 }