diff --git a/scripts/admin-test-env-modules/phase3-loading.mjs b/scripts/admin-test-env-modules/phase3-loading.mjs
index ed57a829b..7e3535425 100644
--- a/scripts/admin-test-env-modules/phase3-loading.mjs
+++ b/scripts/admin-test-env-modules/phase3-loading.mjs
@@ -8,6 +8,7 @@ const OPTIONS = { scenario: 'phase3-split-preload-loading', deploymentBlocker: t
 const MERCHANT_USERNAME = process.env.MERCHANT_TEST_USERNAME || ''
 const MERCHANT_PASSWORD = process.env.MERCHANT_TEST_PASSWORD || ''
 const MATSON_SUPPLIER_NAME = 'MATSON 开发联调船司'
+const LATE_CONTAINER_GATE_ONLY = process.env.LATE_CONTAINER_GATE_ONLY === '1'
 
 function id(value) { return value == null ? '' : String(value) }
 export function markerSuffix(marker) {
@@ -496,19 +497,24 @@ export async function run(context) {
   const latestContainerResponse = await context.request('GET', `/api/platform/v1/containers/${containerBookingId}`)
   const latestContainer = context.apiSuccess(MODULE, '合并前读取模拟柜最新版本', latestContainerResponse, '', OPTIONS)
   const linkResponse = await request(context, 'POST', `/api/platform/v1/containers/${containerBookingId}/ocean-booking-link`, {
-    oceanBookingId: bookingId, requirementId: id(requirement.id), containerNo,
+    oceanBookingId: bookingId, requirementId: id(requirement.id),
+    ...(LATE_CONTAINER_GATE_ONLY ? {} : { containerNo }),
     expectedVersion: Number(latestContainer?.version),
   })
-  const linked = context.apiSuccess(MODULE, '模拟柜原地关联三期 RELEASED 订舱需求并补真实柜号', linkResponse, '', OPTIONS)
-  context.assert(MODULE, '订舱关联保持柜次计划与真实柜号身份', linkResponse,
+  const linked = context.apiSuccess(MODULE, LATE_CONTAINER_GATE_ONLY
+    ? '无号模拟柜原地关联三期 RELEASED 订舱需求'
+    : '模拟柜原地关联三期 RELEASED 订舱需求并补真实柜号', linkResponse, '', OPTIONS)
+  context.assert(MODULE, '订舱关联保持柜次计划与运输身份', linkResponse,
     id(linked?.id) === containerBookingId && linked?.cabinetNo === simulation.cabinetNo
-      && linked?.containerNo === containerNo && id(linked?.oceanBookingId) === bookingId,
+      && (LATE_CONTAINER_GATE_ONLY ? linked?.containerNo == null : linked?.containerNo === containerNo)
+      && id(linked?.oceanBookingId) === bookingId,
     `containerBookingId=${containerBookingId}, loadingPlanId=${loadingPlanId}`, OPTIONS)
   if (id(linked?.id) !== containerBookingId) return
 
   context.assert(MODULE, '三期订舱 RELEASED 后保持模拟柜关联身份和运输快照', releaseResponse,
     bookingConfirmed?.oceanBooking?.status === 'RELEASED'
-      && id(linked?.oceanBookingId) === bookingId && linked?.containerNo === containerNo,
+      && id(linked?.oceanBookingId) === bookingId
+      && (LATE_CONTAINER_GATE_ONLY ? linked?.containerNo == null : linked?.containerNo === containerNo),
     `status=${bookingConfirmed?.oceanBooking?.status || 'missing'}, containerBookingId=${containerBookingId}`, OPTIONS)
 
   const unconfirmedTaskResponse = await context.request('GET',
@@ -610,7 +616,8 @@ export async function run(context) {
     && id(inventory?.loadingPlanId) === loadingPlanId
     && id(inventory?.containerBookingId) === containerBookingId
     && Number(inventory?.taskVersion) === Number(claimed?.version)
-    && id(inventory?.cabinetNo) && inventory?.currentContainerNo === containerNo
+    && id(inventory?.cabinetNo)
+    && (LATE_CONTAINER_GATE_ONLY ? inventory?.currentContainerNo == null : inventory?.currentContainerNo === containerNo)
     && id(inventory?.warehouseId) === warehouseId
     && Boolean(inventory?.capturedAt) && typeof inventory?.snapshotToken === 'string'
     && inventory.snapshotToken.length === 64 && Number(inventoryInbound?.availablePackageCount) >= 1
@@ -869,6 +876,70 @@ export async function run(context) {
       && id(pickedPlan?.pdaTaskId) === canonicalTaskId && pickedPlan?.pdaTaskStatus === 'LOADING',
     `status=${pickedPlan?.status || 'missing'}, version=${pickedPlan?.version ?? 'missing'}`, OPTIONS)
 
+  if (LATE_CONTAINER_GATE_ONLY) {
+    const missingOperationId = `${context.marker}-late-container-missing-complete`.slice(0, 128)
+    const missingComplete = await request(context, 'POST', `${pdaBase}/tasks/${canonicalTaskId}/complete`, {
+      expectedTaskVersion: Number(pickedCanonical?.version), operationId: missingOperationId,
+      remark: `${context.marker}-missing-container`,
+    })
+    context.addStep(MODULE, '无号拣货完成后 PDA complete 精确返回 A0409', missingComplete,
+      missingComplete.http === 200 && codeOf(missingComplete) === 'A0409'
+        && String(missingComplete.body?.message || '').includes('真实集装箱号'),
+      `${responseEvidence(missingComplete)}, message=${missingComplete.body?.message || 'missing'}`, OPTIONS)
+
+    const transport = await request(context, 'PATCH',
+      `/api/platform/v1/first-leg/loading-plans/${loadingPlanId}/transport?warehouseId=${encodeURIComponent(warehouseId)}`, {
+        containerNo, voyageNo: bookingDraft.voyageNo, expectedVersion: Number(pickedPlan?.version),
+        operationReason: null,
+      }, { 'Idempotency-Key': `${context.marker}-late-container-fill`.slice(0, 128) })
+    const filled = context.apiSuccess(MODULE, 'LOADING 阶段通过预装运输信息首次补录真实柜号', transport,
+      responseEvidence(transport), OPTIONS)
+    context.assert(MODULE, '首次补号保持计划与柜次身份且柜号规范化落盘', transport,
+      id(filled?.summary?.planId) === loadingPlanId
+        && id(filled?.summary?.containerBookingId) === containerBookingId
+        && filled?.summary?.status === 'LOADING' && filled?.summary?.containerNo === containerNo,
+      `planId=${id(filled?.summary?.planId) || 'missing'}, containerBookingId=${id(filled?.summary?.containerBookingId) || 'missing'}, containerNo=${filled?.summary?.containerNo || 'missing'}`, OPTIONS)
+
+    const afterFillTaskResponse = await context.request('GET', taskDetailPath)
+    const afterFillTask = context.apiSuccess(MODULE, '首次补号后回读原 PDA 任务', afterFillTaskResponse, '', OPTIONS)
+    context.assert(MODULE, '补号不替换 task/plan/cabinet 稳定身份', afterFillTaskResponse,
+      id(afterFillTask?.id) === canonicalTaskId && id(afterFillTask?.loadingPlanId) === loadingPlanId
+        && id(afterFillTask?.containerBookingId) === containerBookingId
+        && afterFillTask?.currentContainerNo === containerNo,
+      `taskId=${id(afterFillTask?.id) || 'missing'}, currentContainerNo=${afterFillTask?.currentContainerNo || 'missing'}`, OPTIONS)
+
+    const acceptedOperationId = `${context.marker}-late-container-accepted-complete`.slice(0, 128)
+    const acceptedComplete = await request(context, 'POST', `${pdaBase}/tasks/${canonicalTaskId}/complete`, {
+      expectedTaskVersion: Number(afterFillTask?.version), operationId: acceptedOperationId,
+      remark: `${context.marker}-container-filled`,
+    })
+    context.assert(MODULE, '补号后 complete 已越过柜号门禁并受理异步命令', acceptedComplete,
+      acceptedComplete.http === 200 && codeOf(acceptedComplete) === '200'
+        && ['PROCESSING', 'FAILED', 'COMPLETED'].includes(acceptedComplete.body?.data?.workflowStatus),
+      `${responseEvidence(acceptedComplete)}, workflow=${acceptedComplete.body?.data?.workflowStatus || 'missing'}`, OPTIONS)
+
+    let terminalTask = acceptedComplete.body?.data
+    let terminalResponse = acceptedComplete
+    for (let attempt = 0; attempt < 10 && terminalTask?.workflowStatus === 'PROCESSING'; attempt += 1) {
+      await new Promise((resolve) => setTimeout(resolve, 500))
+      terminalResponse = await context.request('GET', taskDetailPath)
+      if (terminalResponse.http === 200 && codeOf(terminalResponse) === '200') terminalTask = terminalResponse.body?.data
+    }
+    context.assert(MODULE, '补号后的下一完成门禁返回明确终态而非柜号冲突', terminalResponse,
+      terminalTask?.workflowStatus !== 'PROCESSING'
+        && !String(terminalTask?.completionCommand?.failureMessage || '').includes('集装箱号'),
+      `workflow=${terminalTask?.workflowStatus || 'missing'}, stage=${terminalTask?.completionCommand?.failureStage || 'none'}, code=${terminalTask?.completionCommand?.failureCode || 'none'}, message=${terminalTask?.completionCommand?.failureMessage || 'none'}`, OPTIONS)
+    context.createdResources.phase3LateContainerGate = {
+      marker: context.marker, tenantId, inboundId, containerBookingId, cabinetNo: simulation.cabinetNo,
+      oceanBookingId: bookingId, loadingPlanId, taskId: canonicalTaskId, containerNo,
+      missingComplete: responseEvidence(missingComplete), fill: responseEvidence(transport),
+      acceptedComplete: responseEvidence(acceptedComplete), finalWorkflow: terminalTask?.workflowStatus || null,
+      nextFailureStage: terminalTask?.completionCommand?.failureStage || null,
+      nextFailureCode: terminalTask?.completionCommand?.failureCode || null,
+    }
+    return
+  }
+
   const preload = await context.request('GET', `${base}/preload?tenantId=${encodeURIComponent(tenantId)}`)
   const preloadData = context.apiSuccess(MODULE, '回查已确认预装清单', preload, '', OPTIONS)
   context.assert(MODULE, 'PDA 最终完成前预装清单仍为 CONFIRMED 且归属稳定', preload,