Expose outbound traffic totals and simplify Direct chart breakdown

src/server/services/deviceInventoryService.ts

@@ -149,6 +149,11 @@ interface OutboundTrafficSample {
   unknownBytes: string;
 }
 
+interface OutboundTrafficTotal extends OutboundTrafficSample {
+  singboxObservedAt: string | null;
+  directIpv4ObservedAt: string | null;
+}
+
 interface OutboundTrafficCursor {
   signature: string;
   routeEpoch: string;
@@ -709,6 +714,7 @@ export function createDeviceInventoryService({
   const trafficCursorByMac = new Map<string, TrafficCursor>();
   const outboundTrafficHistoryByDeviceId = new Map<string, OutboundTrafficSample[]>();
   const outboundTrafficCursorByDeviceId = new Map<string, OutboundTrafficCursor>();
+  const outboundTrafficByDeviceId = new Map<string, OutboundTrafficTotal>();
   let globalTrafficHistory: TrafficSample[] = [];
   let globalTrafficCursor: TrafficCursor | null = null;
   const hostnameAttempts = new Map<string, number>();
@@ -832,6 +838,15 @@ export function createDeviceInventoryService({
       const current: OutboundTrafficCursor = { signature, routeEpoch, directEpoch, ...total };
       const previous = outboundTrafficCursorByDeviceId.get(device.id);
       outboundTrafficCursorByDeviceId.set(device.id, current);
+      if (observedAt) outboundTrafficByDeviceId.set(device.id, {
+        observedAt,
+        singboxObservedAt: routeObservedAt || null,
+        directIpv4ObservedAt: directObservedAt || null,
+        vpnBytes: total.vpn.toString(),
+        directTrackedBytes: total.directTracked.toString(),
+        directIpv4Bytes: total.directIpv4.toString(),
+        unknownBytes: total.unknown.toString(),
+      });
       if (!previous || previous.signature === signature || !observedAt) continue;
       const routeDelta = (value: bigint, before: bigint) => (
         routeEpoch && routeEpoch === previous.routeEpoch && value > before ? value - before : 0n
@@ -852,6 +867,7 @@ export function createDeviceInventoryService({
       if (!knownIds.has(deviceId)) {
         outboundTrafficCursorByDeviceId.delete(deviceId);
         outboundTrafficHistoryByDeviceId.delete(deviceId);
+        outboundTrafficByDeviceId.delete(deviceId);
       }
     }
   }
@@ -919,6 +935,7 @@ export function createDeviceInventoryService({
         proxyDownloadBytes: proxyTraffic?.downloadBytes || '0',
         proxyTrafficObservedAt: proxyTraffic?.observedAt || null,
         trafficHistory: trafficHistoryByMac.get(device.mac) || [],
+        outboundTraffic: outboundTrafficByDeviceId.get(device.id) || null,
         outboundTrafficHistory: outboundTrafficHistoryByDeviceId.get(device.id) || [],
         desiredPolicy: policy.desired,
         appliedPolicy: policy.applied,