tokamak load test + dashboard unit fix (k6 RW emits seconds)

scripts/tokamak-load.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+# Staircase load test against the tokamak public API (prod or dev).
+# Usage: ./scripts/tokamak-load.sh <start-rps> <step-rps> <step-duration> <steps> [env]
+# Example (gentle first run):
+#   ./scripts/tokamak-load.sh 2 2 1m 4
+set -euo pipefail
+
+START=${1:?start rps required}
+STEP=${2:?step rps required}
+DUR=${3:?step duration required, e.g. 2m}
+STEPS=${4:?number of steps required}
+ENVIRONMENT=${5:-prod}
+NAME="tokamak-$(date +%s)"
+PROM_RW="http://prometheus.monitoring.svc:9090/api/v1/write"
+
+case "$ENVIRONMENT" in
+  prod) BASE="https://api.blueocean.ai/public/v1" ;;
+  dev)  BASE="https://api.dev.blueocean.ai/public/v1" ;;
+  *) echo "env must be prod or dev"; exit 1 ;;
+esac
+
+kubectl -n loadtest apply -f - <<EOF
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: $NAME
+spec:
+  parallelism: 1
+  ttlSecondsAfterFinished: 1800
+  template:
+    spec:
+      restartPolicy: Never
+      containers:
+        - name: k6
+          image: grafana/k6:1.4.0
+          command: ["k6", "run", "/scripts/tokamak.js", "-o", "experimental-prometheus-rw", "--tag", "testid=$NAME"]
+          env:
+            - {name: BASE_URL, value: "$BASE"}
+            - {name: START_RPS, value: "$START"}
+            - {name: STEP_RPS, value: "$STEP"}
+            - {name: STEP_DURATION, value: "$DUR"}
+            - {name: STEPS, value: "$STEPS"}
+            - {name: K6_PROMETHEUS_RW_SERVER_URL, value: "$PROM_RW"}
+            - {name: K6_PROMETHEUS_RW_TREND_STATS, value: "avg,p(50),p(95),p(99),min,max"}
+            - name: TOKAMAK_API_KEY
+              valueFrom: {secretKeyRef: {name: tokamak-api-key, key: api-key}}
+          resources:
+            requests: {cpu: 200m, memory: 256Mi}
+            limits: {memory: 1Gi}
+          volumeMounts:
+            - {name: scripts, mountPath: /scripts}
+      volumes:
+        - name: scripts
+          configMap: {name: k6-tokamak-script}
+EOF
+
+MAX=$(( START + (STEPS - 1) * STEP ))
+echo "tokamak staircase '$NAME' against $ENVIRONMENT ($BASE)"
+echo "  $STEPS steps: $START -> $MAX rps (+$STEP each), $DUR holds"
+echo "  auth: k8s secret tokamak-api-key"
+echo "Watch:  Grafana -> 'k6 Step Load' dashboard (filter testid=$NAME)"
+echo "Logs:   kubectl -n loadtest logs -f job/$NAME"
+echo "Stop:   kubectl -n loadtest delete job $NAME"