feat(traffic): добавить приём Traffic Flow с jump-host

Чтобы видеть «кто с кем», а не только объём порта: IPFIX внутри WG на хосте Docker MM, REST-счётчики не трогаем.

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

backend/src/services/wireguard-ros.ts

@@ -0,0 +1,50 @@
+import type { MikrotikClient } from "./mikrotik.js"
+
+/** Общие PUT iface / peer / address для `/wireguard` и traffic-flow overlay. */
+export function toRosBody(obj: Record<string, string | undefined>): Record<string, string> {
+  const out: Record<string, string> = {}
+  for (const [k, v] of Object.entries(obj)) {
+    if (v !== undefined && v !== "") out[k] = v
+  }
+  return out
+}
+
+export function asRosArray<T>(raw: unknown): T[] {
+  if (Array.isArray(raw)) return raw as T[]
+  if (raw && typeof raw === "object") return [raw as T]
+  return []
+}
+
+export function rosRowId(row: Record<string, unknown>): string {
+  return String(row[".id"] ?? row.id ?? "")
+}
+
+export async function putWireguardInterface(
+  client: MikrotikClient,
+  fields: Record<string, string | undefined>,
+): Promise<void> {
+  await client.put("/interface/wireguard", toRosBody(fields))
+}
+
+export async function putIpAddress(
+  client: MikrotikClient,
+  address: string,
+  iface: string,
+): Promise<void> {
+  await client.put("/ip/address", { address, interface: iface })
+}
+
+export async function putWireguardPeer(
+  client: MikrotikClient,
+  fields: Record<string, string | undefined>,
+): Promise<void> {
+  await client.put("/interface/wireguard/peers", toRosBody(fields))
+}
+
+export async function patchRosPath(
+  client: MikrotikClient,
+  path: string,
+  fields: Record<string, string | undefined>,
+): Promise<void> {
+  await client.patch(path, toRosBody(fields))
+}