fix(load): send the exact assessment request count

scripts/load_test.js

@@ -6,17 +6,15 @@ import exec from 'k6/execution';
 
 const API_URL = __ENV.API_URL || 'http://localhost:8000/api/v1/cdr/raw';
 const PROFILE = (__ENV.PROFILE || 'assessment').toLowerCase();
-const P95_MS = Number(__ENV.P95_MS || 50);
+const P95_MS = __ENV.P95_MS ? Number(__ENV.P95_MS) : null;
 
 // Assessment profile directly models the required scenario:
 // 500 records in <5s. 125 iterations/s for 4 seconds schedules exactly 500 iterations.
 const assessmentScenario = {
-  executor: 'constant-arrival-rate',
-  rate: 125,
-  timeUnit: '1s',
-  duration: '4s',
-  preAllocatedVUs: 50,
-  maxVUs: 250,
+  executor: 'shared-iterations',
+  vus: 50,
+  iterations: 500,
+  maxDuration: '5s',
   gracefulStop: '5s',
 };
 
@@ -50,9 +48,10 @@ export const options = {
       assessment_completion_ms: ['max<5000'],
     } : {}),
 
-    // This is a project performance guardrail, not an assessment requirement.
-    // Override it with P95_MS=100 (etc.) if you want a different SLA.
-    http_req_duration: [`p(95)<${P95_MS}`],
+    // Optional project performance guardrail; the assessment defines no p95 SLA.
+    ...(Number.isFinite(P95_MS) && P95_MS > 0 ? {
+      http_req_duration: [`p(95)<${P95_MS}`],
+    } : {}),
   },
 };