fix(dashboard): real error rate from llm_api_errors_total

- errors now = rate(llm_api_errors_total) instead of network TX bytes
- rps = rate(llm_api_requests_total) + rate(http_server_request_count_total)
- Latency card → Load Average (was misleading: showed node load as 'ms')
- Overview 'Errors' StatBox was hardcoded 0 → real llm err/s
- rename hasTraffik → hasTraffic (Traefik removed 2026-08-02)

src/app/api/dashboard/route.ts

@@ -159,10 +159,10 @@ export async function GET() {
     load15,
     netIn,
     netOut,
-    rps,
-    latency,
-    errors,
-    traceVolume,
+    netInSpark,
+    loadSpark,
+    netOutSpark,
+    upstreamCount,
   ] = await Promise.all([
     promQuery(
       `100 - (avg by(instance)(rate(node_cpu_seconds_total{mode="idle"}[1m])) * 100)`,
@@ -184,6 +184,18 @@ export async function GET() {
     promQuery("count(up)"),
   ]);
 
+  // ── Error rate (llm-api) & request rate (any /metrics service) ──
+  const [errRate, errSpark] = await Promise.all([
+    promQuery(`sum(rate(llm_api_errors_total[5m]))`),
+    promRange(`sum(rate(llm_api_errors_total[1m]))`),
+  ]);
+  const reqRate = await promQuery(
+    `sum(rate(llm_api_requests_total[5m])) + sum(rate(http_server_request_count_total[5m]))`,
+  );
+  const reqSpark = await promRange(
+    `sum(rate(llm_api_requests_total[1m])) + sum(rate(http_server_request_count_total[1m]))`,
+  );
+
   // ── LLM inference metrics (llm-api /metrics) ──
   const [
     llmReqRate,
@@ -225,10 +237,10 @@ export async function GET() {
     services,
     traces: [],
     node: { cpu, ram, disk, load1, load5, load15, netIn, netOut },
-    rps,
-    latency,
-    errors,
-    traceVolume: traceVolume ? [traceVolume] : [],
+    rps: reqSpark,
+    latency: loadSpark,
+    errors: errSpark,
+    traceVolume: netInSpark,
     links,
     llm: {
       reqRate: llmReqRate,

src/app/dashboard/page.tsx

@@ -60,8 +60,8 @@ export default function Dashboard() {
     data?.services.filter((s) => s.state === "running").length ?? 0;
   const degraded = (data?.services.length ?? 0) - running;
   const hasNode = data?.node.cpu !== null || data?.node.ram !== null;
-  const hasTraffik =
-    (data?.rps?.length ?? 0) > 0 || (data?.latency?.length ?? 0) > 0;
+  const hasTraffic =
+    (data?.rps?.length ?? 0) > 0 || (data?.errors?.length ?? 0) > 0;
   const node = data?.node;
 
   return (
@@ -147,7 +147,15 @@ export default function Dashboard() {
                   label="Traces"
                   color="text-blue-400"
                 />
-                <StatBox value={0} label="Errors" color="text-red-400" />
+                <StatBox
+                  value={
+                    data?.errors?.length
+                      ? data.errors[data.errors.length - 1].toFixed(2)
+                      : undefined
+                  }
+                  label="LLM err/s"
+                  color="text-red-400"
+                />
               </div>
             </CardContent>
           </Card>
@@ -299,7 +307,7 @@ export default function Dashboard() {
         </motion.div>
 
         {/* Request Rate */}
-        {hasTraffik && (
+        {hasTraffic && (
           <motion.div variants={cardVariants}>
             <Card className="transition-shadow duration-300 hover:shadow-md hover:shadow-border/20">
               <CardHeader className="flex flex-row items-center justify-between">
@@ -317,15 +325,15 @@ export default function Dashboard() {
           </motion.div>
         )}
 
-        {/* Latency */}
-        {hasTraffik && (
+        {/* Load Average */}
+        {hasNode && (
           <motion.div variants={cardVariants}>
             <Card className="transition-shadow duration-300 hover:shadow-md hover:shadow-border/20">
               <CardHeader className="flex flex-row items-center justify-between">
-                <CardTitle>Latency</CardTitle>
+                <CardTitle>Load Average</CardTitle>
                 <Badge variant="secondary" className="text-[10px] font-normal">
                   {data?.latency?.length
-                    ? `${data.latency[data.latency.length - 1].toFixed(0)}ms`
+                    ? data.latency[data.latency.length - 1].toFixed(2)
                     : "-"}
                 </Badge>
               </CardHeader>
@@ -337,7 +345,7 @@ export default function Dashboard() {
         )}
 
         {/* Error Rate */}
-        {hasTraffik && (
+        {hasTraffic && (
           <motion.div variants={cardVariants}>
             <Card className="transition-shadow duration-300 hover:shadow-md hover:shadow-border/20">
               <CardHeader className="flex flex-row items-center justify-between">