test: isolate phase4 carrier fixtures

scripts/admin-test-env-acceptance.mjs

@@ -1029,6 +1029,10 @@ export class AcceptanceRun {
       present: Object.hasOwn(this.createdResources, key), value: this.createdResources[key],
     }]))
     let restoreFixture = null
+    // Each producer variant must create and advance its own loading, outbound and carrier facts.
+    // Keeping the outer run's objects here can make a later container write PICKUP_READY nodes
+    // to an earlier carrier task while still reporting the variant as ready.
+    for (const key of createdKeys) delete this.createdResources[key]
     this.marker = variantMarker
     this.context.orderDestinationType = destinationType
     this.context.orderFulfillmentType = fulfillmentType

scripts/admin-test-env-modules/phase3-phase4-producer-fixture-contract.test.mjs

@@ -112,6 +112,7 @@ test('only PDA-operated variants traverse real outbound and carrier nodes before
   }
   for (const key of ['phase3Customs', 'serviceCenterFlow', 'portSchedule', 'phase3OutboundDispatch',
     'phase3CarrierScheduleQuery', 'phase4CarrierPickupReady']) assert.match(entry, new RegExp(`'${key}'`))
+  assert.match(entry, /for \(const key of createdKeys\) delete this\.createdResources\[key\]/)
   assert.match(pickupChain, /shippingReady/)
   assert.match(entry, /carrierScheduleQueryId/)
   assert.match(pickupChain, /pickup\?\.marker === variantMarker/)