feat(traffic-flow): add rebuild facts endpoint and enhance traffic flow analytics

- Introduced a new endpoint `/traffic/flow/rebuild-facts` to rebuild flow facts from buckets, improving data accuracy and management.
- Updated traffic flow analytics to utilize the new `resolveInternetDest` function for better destination resolution.
- Enhanced tests for traffic flow IP handling and added new utility functions for managing internet destinations.

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

backend/src/routes/traffic-flow.ts

@@ -27,6 +27,7 @@ import {
 import { buildFlowMapHops } from "../services/traffic-flow-map-hops.js"
 import { applyFlowOverlay } from "../services/traffic-flow-overlay.js"
 import { listTrafficFlowHostFiles } from "../services/traffic-flow-host-files.js"
+import { rebuildFlowFactsFromBuckets } from "../services/traffic-flow-facts-rebuild.js"
 import { appendEvent } from "../modules/events/service/events-service.js"
 
 const LIVE_TICK_MS = 2000
@@ -203,6 +204,27 @@ const trafficFlowRoutes: FastifyPluginAsyncZod = async (app) => {
     }
   })
 
+  app.post("/traffic/flow/rebuild-facts", async (_req, reply) => {
+    try {
+      const result = await rebuildFlowFactsFromBuckets()
+      await appendEvent({
+        level: "info",
+        eventType: "traffic.flow.rebuild_facts",
+        sourceModule: "traffic",
+        title: "Пересчитан куб NetFlow",
+        message: `Факты ${result.facts} из ${result.buckets} сессий, дней ${result.days.length}`,
+        entityType: "traffic_flow",
+        entityId: "rebuild-facts",
+        payload: { buckets: result.buckets, facts: result.facts, days: result.days },
+      })
+      return reply.send(result)
+    } catch (err) {
+      const message = err instanceof Error ? err.message : String(err)
+      const status = message.includes("уже выполняется") ? 409 : 500
+      return reply.status(status).send({ error: message })
+    }
+  })
+
   app.post("/traffic/flow/overlay", applyOverlayHandler)
   app.post("/traffic/flow-overlay", applyOverlayHandler)