test: harden admin acceptance fixtures

scripts/admin-test-env-modules/inbound-measurement.mjs

@@ -562,8 +562,10 @@ async function multipartRequest(context, path, data) {
 }
 
 async function requestWithHeaders(context, method, path, body, extraHeaders) {
-  try {
-    const response = await fetch(`${context.options.gateway}${path}`, {
+  let lastResponse = null
+  for (let attempt = 1; attempt <= 3; attempt += 1) {
+    try {
+      const response = await fetch(`${context.options.gateway}${path}`, {
       method,
       headers: {
         Accept: 'application/json', Authorization: `Bearer ${context.token}`,
@@ -574,15 +576,20 @@ async function requestWithHeaders(context, method, path, body, extraHeaders) {
     const content = await response.text()
     let payload = null
     try { payload = content ? JSON.parse(content) : null } catch { /* Preserve only a bounded error string. */ }
-    return {
+      lastResponse = {
       method, path, http: response.status, body: payload,
       raw: payload === null ? content.slice(0, 500) : null,
       requestId: payload?.requestId || response.headers.get('x-request-id'),
       traceId: payload?.traceId || response.headers.get('x-trace-id'),
+      }
+      if (lastResponse.http !== 0 || attempt === 3) return lastResponse
+    } catch (error) {
+      lastResponse = { method, path, http: 0, body: null, raw: error instanceof Error ? error.message : String(error), requestId: null, traceId: null }
+      if (attempt === 3) return lastResponse
     }
-  } catch (error) {
-    return { method, path, http: 0, body: null, raw: error instanceof Error ? error.message : String(error), requestId: null, traceId: null }
+    await new Promise((resolve) => setTimeout(resolve, 400 * attempt))
   }
+  return lastResponse
 }
 
 async function updateConfirmedPackageCount(context, measurementPath, itemId, body) {