fix(network-map): рисовать пунктир и скорость до сервиса

Якорь hop на EN даже без nextHop; линия ARN\to Google с NetflowRateBadge.

Co-authored-by: Cursor <[email protected]>

backend/src/services/traffic-flow-map-hops.test.ts

@@ -371,4 +371,42 @@ try {
   resetFlowCatalogForTests()
 }
 
+resetFlowRingsForTests()
+resetIfaceCacheForTests()
+resetRipeCacheForTests()
+disableRipeEnqueueForTests()
+seedFlowTopologyForTests(topo)
+rememberServerIfaces(7, [
+  { ".id": "*1", name: "SWE-VEESP" },
+])
+ingestParsedFlowsForServerForTests(7, [
+  {
+    src: "173.194.151.65",
+    dst: "10.200.100.53",
+    proto: 6,
+    srcPort: 443,
+    dstPort: 57182,
+    bytes: 9_000,
+    packets: 80,
+    inIface: "1",
+    outIface: "1",
+    nextHop: "",
+  },
+])
+try {
+  resetFlowMapHopsCacheForTests()
+  const wanOnly = buildFlowMapHops({ minutes: 5, minSharePct: 0 })
+  const googleEdge = wanOnly.serviceEdges?.find((e) => e.toId === "svc:google")
+  assert.ok(googleEdge, "Google WAN без GRE payload")
+  assert.equal(googleEdge.fromId, "9", "единственный EN, даже без nextHop")
+  assert.ok(googleEdge.bps > 0, "скорость на hop EN→сервис")
+  assert.ok(!(wanOnly.serviceEdges ?? []).some((e) => e.fromId === "7"), "нет пунктира с JH")
+} finally {
+  seedFlowTopologyForTests(null)
+  resetFlowRingsForTests()
+  resetIfaceCacheForTests()
+  resetRipeCacheForTests()
+  resetFlowCatalogForTests()
+}
+
 console.log("traffic-flow-map-hops.test.ts: ok")

backend/src/services/traffic-flow-map-hops.ts

@@ -327,11 +327,22 @@ function buildFlowMapHopsUncached(q: FlowMapHopsQuery, minSharePct: number): Flo
     clients: Map<string, string>
   }>()
 
+  for (const h of hops.values()) {
+    if (h.kind !== "gre" || !h.toId) continue
+    const from = Number(h.fromId)
+    const to = Number(h.toId)
+    if (!Number.isFinite(from) || !Number.isFinite(to)) continue
+    if (enIds.has(to) && !enIds.has(from)) jhToEn.set(from, to)
+  }
+
+  const soleEnId = topo.enNodes.length === 1 ? String(topo.enNodes[0]!.id) : null
+
   function anchorEnId(exporterId: string): string | null {
     const n = Number(exporterId)
     if (enIds.has(n)) return exporterId
     const mapped = jhToEn.get(n)
     if (mapped != null) return String(mapped)
+    if (soleEnId) return soleEnId
     return null
   }