diff --git a/android/app/src/main/java/cn/ilapage/goauto/agent/network/AgentApiClient.kt b/android/app/src/main/java/cn/ilapage/goauto/agent/network/AgentApiClient.kt
index 59c712a..f4f93f3 100644
--- a/android/app/src/main/java/cn/ilapage/goauto/agent/network/AgentApiClient.kt
+++ b/android/app/src/main/java/cn/ilapage/goauto/agent/network/AgentApiClient.kt
@@ -43,6 +43,7 @@ data class AgentTask(
     val leaseVersion: Long,
     val status: String,
     val source: String,
+    val replacementOriginType: String,
 )
 
 data class CurrentPageIdentity(
@@ -100,6 +101,11 @@ data class CollectionHistoryDetail(
     val colorPrices: List<HistoryColorPrice>,
     val skus: List<HistorySku>,
     val missing: List<String>,
+    val replacementEligible: Boolean,
+    val replacementDisabledReason: String?,
+    val replacementMappingStatus: String?,
+    val replacementActivationStatus: String?,
+    val replacementActivationErrorMessage: String?,
 )
 
 data class CollectionResetResult(val taskId: Long, val status: String, val replayed: Boolean)
@@ -132,7 +138,14 @@ data class PurchaseHistoryItem(
     val createdAt: String,
 )
 
-data class PurchaseHistoryDetail(val task: PurchaseHistoryItem)
+data class PurchaseHistoryDetail(
+    val task: PurchaseHistoryItem,
+    val replacementEligible: Boolean,
+    val replacementDisabledReason: String?,
+    val replacementMappingStatus: String?,
+    val replacementActivationStatus: String?,
+    val replacementActivationErrorMessage: String?,
+)
 
 class AgentApiException(
     val status: Int,
@@ -184,8 +197,19 @@ class AgentApiClient(private val serverUrl: String) {
         return task(response.getJSONObject("data"))
     }
 
-    fun createCurrentPageCollectionTask(requestId: String, token: String): AgentTask {
+    fun createCurrentPageCollectionTask(
+        requestId: String,
+        token: String,
+        replacementOriginType: String? = null,
+        replacementOriginTaskId: Long? = null,
+    ): AgentTask {
         val payload = JSONObject().put("requestId", requestId)
+        if (!replacementOriginType.isNullOrBlank() && replacementOriginTaskId != null) {
+            payload.put(
+                "replacementOrigin",
+                JSONObject().put("type", replacementOriginType).put("taskId", replacementOriginTaskId),
+            )
+        }
         return task(requireNotNull(request("POST", "/api/agent/v1/current-page-collection-tasks", payload, token)).getJSONObject("data"))
     }
 
@@ -275,6 +299,11 @@ class AgentApiClient(private val serverUrl: String) {
                 HistorySku(specs, item.getLong("priceCent"), item.getBoolean("available"), item.getBoolean("complete"))
             },
             missing = data.getJSONArray("missing").strings(),
+            replacementEligible = data.optBoolean("replacementEligible"),
+            replacementDisabledReason = data.nullableString("replacementDisabledReason"),
+            replacementMappingStatus = data.nullableString("replacementMappingStatus"),
+            replacementActivationStatus = data.nullableString("replacementActivationStatus"),
+            replacementActivationErrorMessage = data.nullableString("replacementActivationErrorMessage"),
         )
     }
 
@@ -294,7 +323,14 @@ class AgentApiClient(private val serverUrl: String) {
 
     fun purchaseHistoryDetail(taskId: Long, token: String): PurchaseHistoryDetail {
         val data = requireNotNull(request("GET", "/api/agent/v1/purchase-tasks/$taskId", null, token)).getJSONObject("data")
-        return PurchaseHistoryDetail(purchaseHistoryItem(data.getJSONObject("task")))
+        return PurchaseHistoryDetail(
+            task = purchaseHistoryItem(data.getJSONObject("task")),
+            replacementEligible = data.optBoolean("replacementEligible"),
+            replacementDisabledReason = data.nullableString("replacementDisabledReason"),
+            replacementMappingStatus = data.nullableString("replacementMappingStatus"),
+            replacementActivationStatus = data.nullableString("replacementActivationStatus"),
+            replacementActivationErrorMessage = data.nullableString("replacementActivationErrorMessage"),
+        )
     }
 
     fun retryPurchaseTask(taskId: Long, requestId: String, token: String): PurchaseRetryResult {
@@ -345,6 +381,7 @@ class AgentApiClient(private val serverUrl: String) {
         leaseVersion = data.getLong("leaseVersion"),
         status = data.getString("status"),
         source = data.optString("source", "admin"),
+        replacementOriginType = data.optString("replacementOriginType"),
     )
 
     private fun purchaseTask(data: JSONObject) = PurchaseAgentTask(
diff --git a/android/app/src/main/java/cn/ilapage/goauto/agent/service/AgentForegroundService.kt b/android/app/src/main/java/cn/ilapage/goauto/agent/service/AgentForegroundService.kt
index 8a1ddd1..fb64d6b 100644
--- a/android/app/src/main/java/cn/ilapage/goauto/agent/service/AgentForegroundService.kt
+++ b/android/app/src/main/java/cn/ilapage/goauto/agent/service/AgentForegroundService.kt
@@ -131,7 +131,11 @@ class AgentForegroundService : Service() {
         if (intent?.action == ACTION_RECONNECT) registeredThisProcess.set(false)
         if (intent?.action == ACTION_CHECK_NOW) manualCheckRequested.set(true)
         if (intent?.action == ACTION_CURRENT_PAGE_COLLECTION) {
-            requestCurrentPageCollection(intent.getStringExtra(EXTRA_CURRENT_PAGE_REQUEST_ID).orEmpty())
+            requestCurrentPageCollection(
+                intent.getStringExtra(EXTRA_CURRENT_PAGE_REQUEST_ID).orEmpty(),
+                intent.getStringExtra(EXTRA_REPLACEMENT_ORIGIN_TYPE),
+                intent.getLongExtra(EXTRA_REPLACEMENT_ORIGIN_TASK_ID, 0L).takeIf { it > 0L },
+            )
             return START_STICKY
         }
         triggerSync()
@@ -291,18 +295,22 @@ class AgentForegroundService : Service() {
         })
     }
 
-    private fun requestCurrentPageCollection(requestId: String) {
+    private fun requestCurrentPageCollection(
+        requestId: String,
+        replacementOriginType: String?,
+        replacementOriginTaskId: Long?,
+    ) {
         if (requestId.isBlank()) {
-            publishCurrentPageResult(0L, "采集请求无效，请重试。")
+            publishCurrentPageResult(0L, "采集请求无效，请重试。", replacementOriginType, replacementOriginTaskId)
             return
         }
         activeCollectionCooldown()?.let { ticket ->
             val remaining = CollectionCooldownPolicy.remainingSeconds(System.currentTimeMillis(), ticket)
-            publishCurrentPageResult(0L, "采集间隔中，还需 $remaining 秒。")
+            publishCurrentPageResult(0L, "采集间隔中，还需 $remaining 秒。", replacementOriginType, replacementOriginTaskId)
             return
         }
         if (!taskMutex.tryAcquire(CURRENT_PAGE_RESERVATION_ID)) {
-            publishCurrentPageResult(0L, "设备正在执行任务，请稍后再试。")
+            publishCurrentPageResult(0L, "设备正在执行任务，请稍后再试。", replacementOriginType, replacementOriginTaskId)
             return
         }
         cancelIdleReturn("正在创建当前页面采集任务")
@@ -318,7 +326,12 @@ class AgentForegroundService : Service() {
                     throw TaskFailure("CURRENT_PDD_PAGE_NOT_FOUND", "请先在拼多多打开目标商品详情页")
                 }
                 val api = AgentApiClient(serverUrl)
-                val task = api.createCurrentPageCollectionTask(requestId, credentials.token)
+                val task = api.createCurrentPageCollectionTask(
+                    requestId,
+                    credentials.token,
+                    replacementOriginType,
+                    replacementOriginTaskId,
+                )
                 taskId = task.taskId
                 check(taskMutex.transfer(CURRENT_PAGE_RESERVATION_ID, task.taskId)) {
                     "当前页面采集本地占用状态不一致"
@@ -329,15 +342,21 @@ class AgentForegroundService : Service() {
                 publishCurrentPageResult(
                     task.taskId,
                     if (outcome.successful) {
-                        "临时采集任务 #${task.taskId} 已结束，请查看采集记录。"
+                        if (task.replacementOriginType.isNotBlank()) {
+                            "已替换，正在匹配规格"
+                        } else {
+                            "临时采集任务 #${task.taskId} 已结束，请查看采集记录。"
+                        }
                     } else {
                         currentPageUserMessage(outcome.code.orEmpty(), outcome.message.orEmpty())
                     },
+                    replacementOriginType,
+                    replacementOriginTaskId,
                 )
             } catch (error: TaskFailure) {
-                publishCurrentPageResult(taskId, currentPageUserMessage(error.code, error.message ?: "采集失败"))
+                publishCurrentPageResult(taskId, currentPageUserMessage(error.code, error.message ?: "采集失败"), replacementOriginType, replacementOriginTaskId)
             } catch (error: AgentApiException) {
-                publishCurrentPageResult(taskId, currentPageUserMessage(error.code, error.message))
+                publishCurrentPageResult(taskId, currentPageUserMessage(error.code, error.message), replacementOriginType, replacementOriginTaskId)
             } catch (error: Exception) {
                 if (taskId > 0L) {
                     val token = runCatching { identityStore.credentials()?.token }.getOrNull()
@@ -353,7 +372,7 @@ class AgentForegroundService : Service() {
                         }
                     }
                 }
-                publishCurrentPageResult(taskId, "采集失败，请查看任务详情。")
+                publishCurrentPageResult(taskId, "采集失败，请查看任务详情。", replacementOriginType, replacementOriginTaskId)
             } finally {
                 if (taskId > 0L) {
                     runningTaskId.compareAndSet(taskId, null)
@@ -366,13 +385,20 @@ class AgentForegroundService : Service() {
         }
     }
 
-    private fun publishCurrentPageResult(taskId: Long, message: String) {
+    private fun publishCurrentPageResult(
+        taskId: Long,
+        message: String,
+        replacementOriginType: String? = null,
+        replacementOriginTaskId: Long? = null,
+    ) {
         currentPageResultNotificationUntil.set(SystemClock.elapsedRealtime() + CURRENT_PAGE_RESULT_NOTIFICATION_MILLIS)
         updateNotification(message, force = true)
         sendBroadcast(Intent(ACTION_CURRENT_PAGE_RESULT).apply {
             setPackage(packageName)
             putExtra(EXTRA_CURRENT_PAGE_TASK_ID, taskId)
             putExtra(EXTRA_CURRENT_PAGE_MESSAGE, message)
+            replacementOriginType?.let { putExtra(EXTRA_REPLACEMENT_ORIGIN_TYPE, it) }
+            replacementOriginTaskId?.let { putExtra(EXTRA_REPLACEMENT_ORIGIN_TASK_ID, it) }
         })
     }
 
@@ -382,6 +408,7 @@ class AgentForegroundService : Service() {
         "CURRENT_PDD_PAGE_NOT_FOUND" -> "没有找到商品详情页，请重新打开商品后再试。"
         "PDD_SHARE_UNAVAILABLE", "PDD_COPY_LINK_UNAVAILABLE", "PDD_CLIPBOARD_UNAVAILABLE", "PDD_SHARE_LINK_INVALID" ->
             "无法识别商品链接，请确认商品页可以分享后再试。"
+        "REPLACEMENT_ACTIVATION_FAILED" -> "采集成功，但替换生效失败，请稍后重试。"
         else -> fallback.ifBlank { "采集失败，请稍后重试。" }
     }
 
@@ -694,6 +721,10 @@ class AgentForegroundService : Service() {
             }
             TaskExecutionSummary(false, error.code, error.message)
         } catch (error: AgentApiException) {
+            if (error.code == "REPLACEMENT_ACTIVATION_FAILED") {
+                resultSafelySubmitted = true
+                beginPostCollectionCooldowns()
+            }
             stateStore.update("TASK_ERROR", "${error.code}：${error.message}", tokenStored = true)
             TaskExecutionSummary(false, error.code, error.message)
         } catch (error: Exception) {
@@ -1001,6 +1032,8 @@ class AgentForegroundService : Service() {
         const val EXTRA_CURRENT_PAGE_REQUEST_ID = "current_page_request_id"
         const val EXTRA_CURRENT_PAGE_TASK_ID = "current_page_task_id"
         const val EXTRA_CURRENT_PAGE_MESSAGE = "current_page_message"
+        const val EXTRA_REPLACEMENT_ORIGIN_TYPE = "replacement_origin_type"
+        const val EXTRA_REPLACEMENT_ORIGIN_TASK_ID = "replacement_origin_task_id"
         const val MANUAL_EMPTY = "empty"
         const val MANUAL_COLLECTION_TASK = "collection_task"
         const val MANUAL_PURCHASE_TASK = "purchase_task"
@@ -1044,10 +1077,17 @@ class AgentForegroundService : Service() {
             }
         }
 
-        fun collectCurrentPage(context: Context, requestId: String): CurrentPageLaunchResult {
+        fun collectCurrentPage(
+            context: Context,
+            requestId: String,
+            replacementOriginType: String? = null,
+            replacementOriginTaskId: Long? = null,
+        ): CurrentPageLaunchResult {
             val intent = Intent(context, AgentForegroundService::class.java).apply {
                 action = ACTION_CURRENT_PAGE_COLLECTION
                 putExtra(EXTRA_CURRENT_PAGE_REQUEST_ID, requestId)
+                replacementOriginType?.let { putExtra(EXTRA_REPLACEMENT_ORIGIN_TYPE, it) }
+                replacementOriginTaskId?.let { putExtra(EXTRA_REPLACEMENT_ORIGIN_TASK_ID, it) }
             }
             return cn.ilapage.goauto.agent.automation.CurrentPageNavigationPolicy.launchBeforeOptionalBackground(
                 launch = {
diff --git a/android/app/src/main/java/cn/ilapage/goauto/agent/ui/TaskHistoryFragment.kt b/android/app/src/main/java/cn/ilapage/goauto/agent/ui/TaskHistoryFragment.kt
index 2df32f1..a0ecbe5 100644
--- a/android/app/src/main/java/cn/ilapage/goauto/agent/ui/TaskHistoryFragment.kt
+++ b/android/app/src/main/java/cn/ilapage/goauto/agent/ui/TaskHistoryFragment.kt
@@ -84,6 +84,19 @@ internal object PurchaseRetryPolicy {
         "系统会保留原任务，并创建一个新的采购任务。重试可能创建新的拼多多待付款订单，但系统不会支付。"
 }
 
+internal enum class ReplacementPresentation { ACTION, ACTIVATION_FAILED, MATCHING, MATCHED, MANUAL_REQUIRED, HIDDEN }
+
+internal object ReplacementActionPolicy {
+    fun presentation(eligible: Boolean, mappingStatus: String?, activationStatus: String?): ReplacementPresentation = when {
+        activationStatus == "failed" -> ReplacementPresentation.ACTIVATION_FAILED
+        mappingStatus == "matching" -> ReplacementPresentation.MATCHING
+        mappingStatus == "matched" -> ReplacementPresentation.MATCHED
+        mappingStatus == "manual_required" -> ReplacementPresentation.MANUAL_REQUIRED
+        eligible -> ReplacementPresentation.ACTION
+        else -> ReplacementPresentation.HIDDEN
+    }
+}
+
 internal class TaskDetailState(restoredTaskId: Long? = null) {
     var taskId: Long? = restoredTaskId?.takeIf { it > 0L }
         private set
@@ -113,18 +126,33 @@ class TaskHistoryFragment : Fragment() {
     private var currentPageReceiverRegistered = false
     private val currentPageReceiver = object : BroadcastReceiver() {
         override fun onReceive(context: Context?, intent: Intent?) {
-            if (intent?.action != AgentForegroundService.ACTION_CURRENT_PAGE_RESULT || !collection) return
+            if (intent?.action != AgentForegroundService.ACTION_CURRENT_PAGE_RESULT) return
             val message = intent.getStringExtra(AgentForegroundService.EXTRA_CURRENT_PAGE_MESSAGE).orEmpty()
             val taskId = intent.getLongExtra(AgentForegroundService.EXTRA_CURRENT_PAGE_TASK_ID, 0L)
+            val originType = intent.getStringExtra(AgentForegroundService.EXTRA_REPLACEMENT_ORIGIN_TYPE)
+            val originTaskId = intent.getLongExtra(AgentForegroundService.EXTRA_REPLACEMENT_ORIGIN_TASK_ID, 0L)
+            val handlesResult = when (originType) {
+                "collection" -> collection
+                "purchase" -> !collection
+                null -> collection
+                else -> false
+            }
+            if (!handlesResult) return
             if (message.isNotBlank()) toast(message)
-            if (taskId > 0L && isAdded) loadCollectionDetail(taskId) else if (isAdded) load()
+            if (!isAdded) return
+            when {
+                originType == "collection" && collection && originTaskId > 0L -> loadCollectionDetail(originTaskId)
+                originType == "purchase" && !collection && originTaskId > 0L -> loadPurchaseDetail(originTaskId)
+                originType == null && collection && taskId > 0L -> loadCollectionDetail(taskId)
+                originType == null && collection -> load()
+            }
         }
     }
 
     override fun onCreate(state: Bundle?) {
         super.onCreate(state)
         detailState = TaskDetailState(state?.getLong(STATE_DETAIL_TASK_ID)?.takeIf { it > 0L })
-        if (collection) registerCurrentPageReceiver()
+        registerCurrentPageReceiver()
     }
 
     override fun onSaveInstanceState(outState: Bundle) {
@@ -506,24 +534,20 @@ class TaskHistoryFragment : Fragment() {
                 setOnClickListener { confirmReset(task) }
             }, collectionCardParams())
         }
+        renderReplacementAction(
+            eligible = detail.replacementEligible,
+            mappingStatus = detail.replacementMappingStatus,
+            activationStatus = detail.replacementActivationStatus,
+            activationErrorMessage = detail.replacementActivationErrorMessage,
+            originType = "collection",
+            taskId = task.taskId,
+            taskNo = "#${task.taskId}",
+        )
     }
 
     private fun confirmCurrentPageCollection() {
-        collectionCooldownMessage()?.let { message ->
-            showCurrentPageBlocked(message)
-            return
-        }
         val context = requireContext()
-        val settings = AgentSettingsStore(context)
-        val credentials = runCatching { SecureDeviceStore(context).credentials() }.getOrNull()
-        val accessibility = GoAutoAccessibilityService.instance
-        val problem = when {
-            settings.serverUrl().isBlank() || credentials == null -> "设备尚未连接服务端，请先检查设置。"
-            AccessibilityReadinessDetector.current(context) != AccessibilityReadiness.READY || accessibility == null -> "请先到“设置”开启采集采购助手。"
-            AgentStateStore(context).read().currentTaskId != null -> "设备正在执行任务，请稍后再试。"
-            !accessibility.hasRecentPddForeground() -> "请先在拼多多打开目标商品详情页，再切回 Agent。"
-            else -> null
-        }
+        val problem = currentPageCollectionProblem()
         if (problem != null) {
             showCurrentPageBlocked(problem)
             return
@@ -533,18 +557,38 @@ class TaskHistoryFragment : Fragment() {
             .setMessage("请确认拼多多已停留在目标商品详情页。Agent 将读取当前商品资料和分享链接；不会采购、创建订单或支付。")
             .setNegativeButton("取消", null)
             .setPositiveButton("开始采集") { _, _ ->
-                toast("正在创建临时采集任务…")
-                when (AgentForegroundService.collectCurrentPage(context, UUID.randomUUID().toString())) {
-                    CurrentPageLaunchResult.STARTED -> Unit
-                    CurrentPageLaunchResult.START_FAILED ->
-                        showCurrentPageBlocked("系统未允许启动采集服务，请保持 Agent 在前台后重试。")
-                    CurrentPageLaunchResult.BACKGROUND_FAILED ->
-                        showCurrentPageBlocked("无法将 Agent 切到后台，请手动返回拼多多后重试。")
-                }
+                launchCurrentPageCollection()
             }
             .show()
     }
 
+    private fun currentPageCollectionProblem(): String? {
+        collectionCooldownMessage()?.let { return it }
+        val context = requireContext()
+        val settings = AgentSettingsStore(context)
+        val credentials = runCatching { SecureDeviceStore(context).credentials() }.getOrNull()
+        val accessibility = GoAutoAccessibilityService.instance
+        return when {
+            settings.serverUrl().isBlank() || credentials == null -> "设备尚未连接服务端，请先检查设置。"
+            AccessibilityReadinessDetector.current(context) != AccessibilityReadiness.READY || accessibility == null -> "请先到“设置”开启采集采购助手。"
+            AgentStateStore(context).read().currentTaskId != null -> "设备正在执行任务，请稍后再试。"
+            !accessibility.hasRecentPddForeground() -> "请先在拼多多打开目标商品详情页，再切回 Agent。"
+            else -> null
+        }
+    }
+
+    private fun launchCurrentPageCollection(originType: String? = null, originTaskId: Long? = null) {
+        val context = requireContext()
+        toast(if (originType == null) "正在创建临时采集任务…" else "正在创建替代商品采集任务…")
+        when (AgentForegroundService.collectCurrentPage(context, UUID.randomUUID().toString(), originType, originTaskId)) {
+            CurrentPageLaunchResult.STARTED -> Unit
+            CurrentPageLaunchResult.START_FAILED ->
+                showCurrentPageBlocked("系统未允许启动采集服务，请保持 Agent 在前台后重试。")
+            CurrentPageLaunchResult.BACKGROUND_FAILED ->
+                showCurrentPageBlocked("无法将 Agent 切到后台，请手动返回拼多多后重试。")
+        }
+    }
+
     private fun showCurrentPageBlocked(message: String) {
         MaterialAlertDialogBuilder(requireContext())
             .setTitle("暂时不能采集")
@@ -665,6 +709,58 @@ class TaskHistoryFragment : Fragment() {
         } else {
             resultColumn.addView(context.centeredMessage("只读详情", "本页没有取消、修改订单或支付入口。"))
         }
+        renderReplacementAction(
+            eligible = detail.replacementEligible,
+            mappingStatus = detail.replacementMappingStatus,
+            activationStatus = detail.replacementActivationStatus,
+            activationErrorMessage = detail.replacementActivationErrorMessage,
+            originType = "purchase",
+            taskId = task.taskId,
+            taskNo = "CG-${task.taskId}",
+        )
+    }
+
+    private fun renderReplacementAction(
+        eligible: Boolean,
+        mappingStatus: String?,
+        activationStatus: String?,
+        activationErrorMessage: String?,
+        originType: String,
+        taskId: Long,
+        taskNo: String,
+    ) {
+        val context = requireContext()
+        when (ReplacementActionPolicy.presentation(eligible, mappingStatus, activationStatus)) {
+            ReplacementPresentation.ACTIVATION_FAILED -> resultColumn.addView(
+                context.centeredMessage(
+                    "采集成功，但替换生效失败",
+                    activationErrorMessage?.takeIf(String::isNotBlank) ?: "请稍后重试。",
+                ),
+            )
+            ReplacementPresentation.MATCHING -> resultColumn.addView(context.centeredMessage("规格匹配中", "替代商品已提交，正在匹配规格。"))
+            ReplacementPresentation.MATCHED -> resultColumn.addView(context.centeredMessage("规格已匹配", "可继续处理原任务。"))
+            ReplacementPresentation.MANUAL_REQUIRED -> resultColumn.addView(context.centeredMessage("需要人工处理", "需在 Admin 人工匹配规格。"))
+            ReplacementPresentation.ACTION -> resultColumn.addView(MaterialButton(context, null, com.google.android.material.R.attr.materialButtonOutlinedStyle).apply {
+                text = "采集替代商品"
+                minimumHeight = context.dp(48)
+                contentDescription = "为任务 $taskNo 采集替代商品"
+                setOnClickListener { confirmReplacement(originType, taskId, taskNo) }
+            }, collectionCardParams())
+            ReplacementPresentation.HIDDEN -> Unit
+        }
+    }
+
+    private fun confirmReplacement(originType: String, taskId: Long, taskNo: String) {
+        currentPageCollectionProblem()?.let { problem ->
+            showCurrentPageBlocked(problem)
+            return
+        }
+        MaterialAlertDialogBuilder(requireContext())
+            .setTitle("采集替代商品")
+            .setMessage("用当前商品替换 $taskNo 的失效商品？")
+            .setNegativeButton("取消", null)
+            .setPositiveButton("替换") { _, _ -> launchCurrentPageCollection(originType, taskId) }
+            .show()
     }
 
     private fun confirmPurchaseRetry(task: PurchaseHistoryItem) {
diff --git a/android/app/src/test/java/cn/ilapage/goauto/agent/ReplacementActionPolicyTest.kt b/android/app/src/test/java/cn/ilapage/goauto/agent/ReplacementActionPolicyTest.kt
new file mode 100644
index 0000000..0ee4c06
--- /dev/null
+++ b/android/app/src/test/java/cn/ilapage/goauto/agent/ReplacementActionPolicyTest.kt
@@ -0,0 +1,22 @@
+package cn.ilapage.goauto.agent
+
+import cn.ilapage.goauto.agent.ui.ReplacementActionPolicy
+import cn.ilapage.goauto.agent.ui.ReplacementPresentation
+import org.junit.Assert.assertEquals
+import org.junit.Test
+
+class ReplacementActionPolicyTest {
+    @Test
+    fun serverEligibilityIsTheOnlyWayToShowTheAction() {
+        assertEquals(ReplacementPresentation.ACTION, ReplacementActionPolicy.presentation(true, null, null))
+        assertEquals(ReplacementPresentation.HIDDEN, ReplacementActionPolicy.presentation(false, null, null))
+    }
+
+    @Test
+    fun workflowStatesTakePriorityOverEligibility() {
+        assertEquals(ReplacementPresentation.ACTIVATION_FAILED, ReplacementActionPolicy.presentation(true, "matching", "failed"))
+        assertEquals(ReplacementPresentation.MATCHING, ReplacementActionPolicy.presentation(true, "matching", "activated"))
+        assertEquals(ReplacementPresentation.MATCHED, ReplacementActionPolicy.presentation(false, "matched", "activated"))
+        assertEquals(ReplacementPresentation.MANUAL_REQUIRED, ReplacementActionPolicy.presentation(false, "manual_required", "activated"))
+    }
+}
diff --git a/docs/03-business-rules-and-glossary.md b/docs/03-business-rules-and-glossary.md
index 5643564..5cafb67 100644
--- a/docs/03-business-rules-and-glossary.md
+++ b/docs/03-business-rules-and-glossary.md
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Business-Rules-and-Glossary
 wiki_url: https://git.ilapage.cn/OPC/goauto/wiki/Business-Rules-and-Glossary.-
-wiki_revision: 14d111bf1043f9c31f4f54dbfbca38826e986ab9
-synchronized_at: 2026-08-28T09:50:14Z
+wiki_revision: 5f829d4d42583b0654d772043047e93a9e1deb79
+synchronized_at: 2026-08-28T10:14:45Z
 <!-- gitea-wiki-mirror:end -->
 
 # 业务规则与术语
@@ -318,3 +318,11 @@ synchronized_at: 2026-08-28T09:50:14Z
 - 用户于 2026-08-28 确认放宽 #46 的 AI 口径：`ai_match` 仅在置信度存在且不低于服务端阈值（默认 0.9）、结果严格属于当前候选、颜色/尺码角色唯一完整、原因非空且写入前输入版本未变化时自动确认。否则不得猜测或选择相近候选，转 `manual_required`。
 - 自动确认必须保存来源、实际置信度和脱敏限长原因；人工确认完成后同步对应分项及主表总体状态。worker 不得覆盖已由人工改变的映射。
 - 纠错不能简单执行 B→C；必须把原 A→B 记录置为 `superseded`，建立 A→C，并只处理原记录冻结的虾皮商品影响集合。
+
+## Agent 手动采集替代商品（#130）
+
+- 只有同一设备上的失败采集或失败采购任务，且错误码逐字等于 `PDD_LINK_INVALID` 或 `PDD_GOODS_SOLD_OUT` 时，Agent 详情才显示“采集替代商品”；Android 不自行推断资格。
+- Agent 创建当前页面采集任务时携带 `replacementOrigin.type`（`collection` / `purchase`）和来源 `taskId`。服务端再次校验设备、任务终态、错误码、源商品、既有替换与进行中的替换流程，并把来源和激活状态持久化到采集任务，保证进程重启后仍可恢复。
+- 替代商品采集结果先按普通采集事务完整保存。随后调用 #131 的原子生效流程；生效失败不得回滚或覆盖已采集商品、规格和 SKU，而是记录稳定的 `failed` 激活状态与限长错误，服务启动后可按同一幂等键仅重试生效，不重新采集。
+- 任务详情的 `replacementMappingStatus` 必须由来源任务对应的替换分项推导，不能只读取主表总体状态。状态为 `matching` 时等待自动匹配，`manual_required` 时由 Admin 人工处理，`matched` 后才进入 #132 的继续采购流程。
+- 替换采集沿用设备级单任务互斥、采集间隔、无障碍安全边界和禁止支付规则；不会增加轮询，也不会创建采购任务或订单。
diff --git a/docs/08-agent-api-contract.md b/docs/08-agent-api-contract.md
index 3ac7f33..0575e12 100644
--- a/docs/08-agent-api-contract.md
+++ b/docs/08-agent-api-contract.md
@@ -2,8 +2,8 @@
 generated: true (请先修改 Gitea Wiki，禁止直接编辑本文件)
 wiki_page: Android-Agent-API-Contract
 wiki_url: https://git.ilapage.cn/OPC/goauto/wiki/Android-Agent-API-Contract.-
-wiki_revision: 0bbe3f1041a0795a156dcd1205dbe85474e80f8c
-synchronized_at: 2026-08-27T10:14:59Z
+wiki_revision: 345d3b29ff7532ba4fd48d64aa3309b9d33225af
+synchronized_at: 2026-08-28T10:15:31Z
 <!-- gitea-wiki-mirror:end -->
 
 # MVP 共享 API 契约
@@ -647,3 +647,38 @@ Content-Type: application/json
 - 相同识别 `requestId` 直接返回已确认身份且不再次访问短链；任务首次确认身份后，不允许不同请求覆盖为其他商品。
 - 识别后继续复用 `POST /api/agent/v1/tasks/{taskId}/result` 与 `/fail`。结果接口要求任务已绑定身份且结果 goods_id 一致；完成、部分完成和失败继续按既有状态机释放设备槽。
 - Agent 历史的任务摘要增加 `source`；`agent_current_page` 展示为“Agent 当前页面”，不新增任务状态。该来源任务不支持重置，失败后由用户从当前商品页重新发起新任务。
+
+### 失败任务采集替代商品（#130）
+
+失败采集详情和失败采购详情增加以下服务端计算字段：
+
+```json
+{
+  "replacementEligible": true,
+  "replacementDisabledReason": null,
+  "replacementMappingStatus": "matching",
+  "replacementActivationStatus": "activated",
+  "replacementActivationErrorMessage": null
+}
+```
+
+- `replacementEligible=true` 仅适用于当前 Device Token 对应设备、任务状态为 `failed`，且错误码逐字等于 `PDD_LINK_INVALID` 或 `PDD_GOODS_SOLD_OUT`；其他错误、其他设备、无源商品、已存在生效替换或已有待处理替换均不得由 Android 自行放宽。
+- `replacementMappingStatus` 取当前来源对应的分项状态：`matching`、`matched` 或 `manual_required`。采购来源必须限定到该任务的 `shopeeProductId`；不能以替换主表总体状态代替。
+- `replacementActivationStatus` 为 `pending`、`activated` 或 `failed`；激活失败时已采集数据仍为完成态，并返回限长的 `replacementActivationErrorMessage`。
+
+创建替代商品采集任务仍调用：
+
+```http
+POST /api/agent/v1/current-page-collection-tasks
+Authorization: Bearer <device-token>
+Content-Type: application/json
+
+{
+  "requestId": "<uuid>",
+  "replacementOrigin": {"type": "collection", "taskId": 123}
+}
+```
+
+`replacementOrigin.type` 只能是 `collection` 或 `purchase`。服务端在创建事务内重新检查资格，并把来源、可选纠错记录和初始 `pending` 激活状态固化到任务；同一 `requestId` 重放时来源必须完全一致。资格变化返回 HTTP 409 和 `REPLACEMENT_ORIGIN_NOT_ELIGIBLE`。
+
+识别与结果提交继续复用当前页面采集接口。结果事务提交后，服务端调用 #131 的登记/纠错并生效流程：成功返回正常完成详情；生效失败返回 HTTP 409、`REPLACEMENT_ACTIVATION_FAILED`，但采集任务、商品、规格和 SKU 已安全保存。服务启动恢复只重试 `pending` / `failed` 的激活步骤，不重新打开 PDD 或重新采集。
diff --git a/server/app/goauto/models/schema.go b/server/app/goauto/models/schema.go
index dca7f3c..4d32edc 100644
--- a/server/app/goauto/models/schema.go
+++ b/server/app/goauto/models/schema.go
@@ -117,43 +117,51 @@ func (CollectionRule) TableName() string { return "collection_rule" }
 // while value 1 makes the composite unique indexes enforce active-task limits
 // consistently on SQLite, MySQL and PostgreSQL.
 type CollectionTask struct {
-	ID                 uint64         `json:"id" gorm:"primaryKey;autoIncrement"`
-	PDDProductID       *uint64        `json:"pddProductId" gorm:"uniqueIndex:ux_collection_task_active_product,priority:1"`
-	PDDProduct         *PDDProduct    `json:"-" gorm:"constraint:OnUpdate:CASCADE,OnDelete:RESTRICT"`
-	RuleID             uint64         `json:"ruleId" gorm:"not null;index"`
-	Rule               CollectionRule `json:"-" gorm:"constraint:OnUpdate:CASCADE,OnDelete:RESTRICT"`
-	DeviceID           *uint64        `json:"deviceId" gorm:"index;uniqueIndex:ux_collection_task_running_device,priority:1"`
-	Device             *AgentDevice   `json:"-"`
-	Source             string         `json:"source" gorm:"size:32;not null;default:admin;index;check:ck_collection_task_source,source IN ('admin','agent_current_page')"`
-	Status             string         `json:"status" gorm:"size:24;not null;index;check:ck_collection_task_status,status IN ('pending','running','completed','completed_partial','failed')"`
-	ActiveSlot         *uint8         `json:"-" gorm:"uniqueIndex:ux_collection_task_active_product,priority:2;check:ck_collection_task_active_slot,(status IN ('pending','running') AND active_slot = 1) OR (status NOT IN ('pending','running') AND active_slot IS NULL)"`
-	DeviceRunSlot      *uint8         `json:"-" gorm:"uniqueIndex:ux_collection_task_running_device,priority:2;check:ck_collection_task_device_run_slot,(status = 'running' AND device_id IS NOT NULL AND device_run_slot = 1) OR (status <> 'running' AND device_run_slot IS NULL)"`
-	URLSnapshot        string         `json:"urlSnapshot" gorm:"type:text;not null"`
-	GoodsIDSnapshot    string         `json:"goodsIdSnapshot" gorm:"size:32;not null;index"`
-	RuleSnapshot       string         `json:"ruleSnapshot" gorm:"type:text;not null"`
-	LeaseExpiresAt     *time.Time     `json:"leaseExpiresAt" gorm:"index"`
-	LeaseVersion       uint64         `json:"leaseVersion" gorm:"not null;default:0"`
-	ClaimRequestID     *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_claim_request_id"`
-	StartRequestID     *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_start_request_id"`
-	CreateRequestID    *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_create_request_id"`
-	IdentifyRequestID  *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_identify_request_id"`
-	ResetRequestID     *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_reset_request_id"`
-	DeleteRequestID    *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_delete_request_id"`
-	FailRequestID      *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_fail_request_id"`
-	Title              *string        `json:"title" gorm:"size:500"`
-	ShopName           *string        `json:"shopName" gorm:"size:255"`
-	SalesText          *string        `json:"salesText" gorm:"size:120"`
-	ReviewCount        *int64         `json:"reviewCount"`
-	MissingJSON        *string        `json:"missing" gorm:"type:text"`
-	ResultRequestID    *string        `json:"resultRequestId" gorm:"size:64;uniqueIndex:ux_collection_task_result_request_id"`
-	ErrorCode          *string        `json:"errorCode" gorm:"size:64;index"`
-	ErrorMessage       *string        `json:"errorMessage" gorm:"size:1000"`
-	StartedAt          *time.Time     `json:"startedAt"`
-	FinishedAt         *time.Time     `json:"finishedAt"`
-	IdentityResolvedAt *time.Time     `json:"identityResolvedAt"`
-	CreatedAt          time.Time      `json:"createdAt"`
-	UpdatedAt          time.Time      `json:"updatedAt"`
-	DeletedAt          gorm.DeletedAt `json:"-" gorm:"index"`
+	ID                                uint64         `json:"id" gorm:"primaryKey;autoIncrement"`
+	PDDProductID                      *uint64        `json:"pddProductId" gorm:"uniqueIndex:ux_collection_task_active_product,priority:1"`
+	PDDProduct                        *PDDProduct    `json:"-" gorm:"constraint:OnUpdate:CASCADE,OnDelete:RESTRICT"`
+	RuleID                            uint64         `json:"ruleId" gorm:"not null;index"`
+	Rule                              CollectionRule `json:"-" gorm:"constraint:OnUpdate:CASCADE,OnDelete:RESTRICT"`
+	DeviceID                          *uint64        `json:"deviceId" gorm:"index;uniqueIndex:ux_collection_task_running_device,priority:1"`
+	Device                            *AgentDevice   `json:"-"`
+	Source                            string         `json:"source" gorm:"size:32;not null;default:admin;index;check:ck_collection_task_source,source IN ('admin','agent_current_page')"`
+	Status                            string         `json:"status" gorm:"size:24;not null;index;check:ck_collection_task_status,status IN ('pending','running','completed','completed_partial','failed')"`
+	ActiveSlot                        *uint8         `json:"-" gorm:"uniqueIndex:ux_collection_task_active_product,priority:2;check:ck_collection_task_active_slot,(status IN ('pending','running') AND active_slot = 1) OR (status NOT IN ('pending','running') AND active_slot IS NULL)"`
+	DeviceRunSlot                     *uint8         `json:"-" gorm:"uniqueIndex:ux_collection_task_running_device,priority:2;check:ck_collection_task_device_run_slot,(status = 'running' AND device_id IS NOT NULL AND device_run_slot = 1) OR (status <> 'running' AND device_run_slot IS NULL)"`
+	URLSnapshot                       string         `json:"urlSnapshot" gorm:"type:text;not null"`
+	GoodsIDSnapshot                   string         `json:"goodsIdSnapshot" gorm:"size:32;not null;index"`
+	RuleSnapshot                      string         `json:"ruleSnapshot" gorm:"type:text;not null"`
+	LeaseExpiresAt                    *time.Time     `json:"leaseExpiresAt" gorm:"index"`
+	LeaseVersion                      uint64         `json:"leaseVersion" gorm:"not null;default:0"`
+	ClaimRequestID                    *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_claim_request_id"`
+	StartRequestID                    *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_start_request_id"`
+	CreateRequestID                   *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_create_request_id"`
+	IdentifyRequestID                 *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_identify_request_id"`
+	ResetRequestID                    *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_reset_request_id"`
+	DeleteRequestID                   *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_delete_request_id"`
+	FailRequestID                     *string        `json:"-" gorm:"size:36;uniqueIndex:ux_collection_task_fail_request_id"`
+	Title                             *string        `json:"title" gorm:"size:500"`
+	ShopName                          *string        `json:"shopName" gorm:"size:255"`
+	SalesText                         *string        `json:"salesText" gorm:"size:120"`
+	ReviewCount                       *int64         `json:"reviewCount"`
+	MissingJSON                       *string        `json:"missing" gorm:"type:text"`
+	ResultRequestID                   *string        `json:"resultRequestId" gorm:"size:64;uniqueIndex:ux_collection_task_result_request_id"`
+	ErrorCode                         *string        `json:"errorCode" gorm:"size:64;index"`
+	ErrorMessage                      *string        `json:"errorMessage" gorm:"size:1000"`
+	StartedAt                         *time.Time     `json:"startedAt"`
+	FinishedAt                        *time.Time     `json:"finishedAt"`
+	IdentityResolvedAt                *time.Time     `json:"identityResolvedAt"`
+	ReplacementOriginType             *string        `json:"-" gorm:"size:16;index:ix_collection_replacement_origin,priority:1;check:ck_collection_replacement_origin_type,replacement_origin_type IS NULL OR replacement_origin_type IN ('collection','purchase')"`
+	ReplacementOriginTaskID           *uint64        `json:"-" gorm:"index:ix_collection_replacement_origin,priority:2"`
+	ReplacementCorrectionID           *uint64        `json:"-" gorm:"index"`
+	ReplacementActivationStatus       *string        `json:"replacementActivationStatus,omitempty" gorm:"size:16;index;check:ck_collection_replacement_activation_status,replacement_activation_status IS NULL OR replacement_activation_status IN ('pending','activated','failed')"`
+	ReplacementID                     *uint64        `json:"replacementId,omitempty" gorm:"index"`
+	ReplacementActivationErrorCode    *string        `json:"replacementActivationErrorCode,omitempty" gorm:"size:64"`
+	ReplacementActivationErrorMessage *string        `json:"replacementActivationErrorMessage,omitempty" gorm:"size:500"`
+	ReplacementActivatedAt            *time.Time     `json:"replacementActivatedAt,omitempty"`
+	CreatedAt                         time.Time      `json:"createdAt"`
+	UpdatedAt                         time.Time      `json:"updatedAt"`
+	DeletedAt                         gorm.DeletedAt `json:"-" gorm:"index"`
 }
 
 func (CollectionTask) TableName() string { return "collection_task" }
diff --git a/server/app/goauto/purchase/agent_history.go b/server/app/goauto/purchase/agent_history.go
index e66b46e..fa351de 100644
--- a/server/app/goauto/purchase/agent_history.go
+++ b/server/app/goauto/purchase/agent_history.go
@@ -9,6 +9,7 @@ import (
 
 	"go-admin/app/goauto/device"
 	"go-admin/app/goauto/models"
+	"go-admin/app/goauto/replacement"
 
 	"gorm.io/gorm"
 )
@@ -51,7 +52,12 @@ type AgentPurchaseList struct {
 }
 
 type AgentPurchaseDetail struct {
-	Task AgentPurchaseItem `json:"task"`
+	Task                              AgentPurchaseItem `json:"task"`
+	ReplacementEligible               bool              `json:"replacementEligible"`
+	ReplacementDisabledReason         string            `json:"replacementDisabledReason,omitempty"`
+	ReplacementMappingStatus          string            `json:"replacementMappingStatus,omitempty"`
+	ReplacementActivationStatus       string            `json:"replacementActivationStatus,omitempty"`
+	ReplacementActivationErrorMessage string            `json:"replacementActivationErrorMessage,omitempty"`
 }
 
 func (s *Service) AgentHistory(ctx context.Context, req AgentHistoryRequest, token string) (AgentPurchaseList, error) {
@@ -119,7 +125,16 @@ func (s *Service) AgentHistoryDetail(ctx context.Context, taskID uint64, token s
 	if err != nil {
 		return AgentPurchaseDetail{}, internal(err)
 	}
-	return AgentPurchaseDetail{Task: agentPurchaseItem(task, s.retryQueryEligibility(ctx, task, true))}, nil
+	inspection, err := replacement.NewService(s.DB).InspectOrigin(ctx, models.ReplacementOriginPurchase, taskID, deviceRecord.ID)
+	if err != nil {
+		return AgentPurchaseDetail{}, internal(err)
+	}
+	return AgentPurchaseDetail{
+		Task:                agentPurchaseItem(task, s.retryQueryEligibility(ctx, task, true)),
+		ReplacementEligible: inspection.Eligible, ReplacementDisabledReason: inspection.DisabledReason,
+		ReplacementMappingStatus: inspection.MappingStatus, ReplacementActivationStatus: inspection.ActivationStatus,
+		ReplacementActivationErrorMessage: inspection.ActivationErrorMessage,
+	}, nil
 }
 
 func agentPurchaseItem(task models.PurchaseTask, retry retryDecision) AgentPurchaseItem {
diff --git a/server/app/goauto/replacement/origin.go b/server/app/goauto/replacement/origin.go
new file mode 100644
index 0000000..cc5af50
--- /dev/null
+++ b/server/app/goauto/replacement/origin.go
@@ -0,0 +1,165 @@
+package replacement
+
+import (
+	"context"
+	"errors"
+
+	"go-admin/app/goauto/models"
+
+	"gorm.io/gorm"
+)
+
+const (
+	CodeOriginNotEligible = "REPLACEMENT_ORIGIN_NOT_ELIGIBLE"
+
+	ErrorPDDLinkInvalid  = "PDD_LINK_INVALID"
+	ErrorPDDGoodsSoldOut = "PDD_GOODS_SOLD_OUT"
+)
+
+type OriginInspection struct {
+	Eligible                bool
+	DisabledReason          string
+	SourceProductID         uint64
+	ShopeeProductID         uint64
+	MappingStatus           string
+	ActivationStatus        string
+	ActivationErrorMessage  string
+	CorrectionReplacementID uint64
+}
+
+func (service *Service) InspectOrigin(ctx context.Context, originType string, taskID, deviceID uint64) (OriginInspection, error) {
+	if service.DB == nil || taskID == 0 || deviceID == 0 || (originType != models.ReplacementOriginCollection && originType != models.ReplacementOriginPurchase) {
+		return OriginInspection{}, fail(CodeInvalidRequest, "替换来源无效")
+	}
+	result := OriginInspection{}
+	var status string
+	var errorCode *string
+	switch originType {
+	case models.ReplacementOriginCollection:
+		var task models.CollectionTask
+		if err := service.DB.WithContext(ctx).Where("id = ? AND device_id = ?", taskID, deviceID).First(&task).Error; errors.Is(err, gorm.ErrRecordNotFound) {
+			return OriginInspection{}, fail(CodeOriginTaskNotFound, "来源采集任务不存在")
+		} else if err != nil {
+			return OriginInspection{}, internal(err)
+		}
+		if task.PDDProductID != nil {
+			result.SourceProductID = *task.PDDProductID
+		}
+		status, errorCode = task.Status, task.ErrorCode
+	case models.ReplacementOriginPurchase:
+		var task models.PurchaseTask
+		if err := service.DB.WithContext(ctx).Where("id = ? AND device_id = ?", taskID, deviceID).First(&task).Error; errors.Is(err, gorm.ErrRecordNotFound) {
+			return OriginInspection{}, fail(CodeOriginTaskNotFound, "来源采购任务不存在")
+		} else if err != nil {
+			return OriginInspection{}, internal(err)
+		}
+		result.SourceProductID = task.PDDProductID
+		if task.ShopeeProductID != nil {
+			result.ShopeeProductID = *task.ShopeeProductID
+		}
+		status, errorCode = task.Status, task.ErrorCode
+	}
+	if result.SourceProductID == 0 {
+		result.DisabledReason = "原任务没有可替换的拼多多商品"
+		return result, nil
+	}
+	if active, found, err := service.activeForOrigin(ctx, result); err != nil {
+		return OriginInspection{}, err
+	} else if found {
+		result.MappingStatus = active
+		result.DisabledReason = "该商品已经发起替换"
+		return result, nil
+	}
+	var activation models.CollectionTask
+	if err := service.DB.WithContext(ctx).
+		Where("replacement_origin_type = ? AND replacement_origin_task_id = ? AND replacement_activation_status IS NOT NULL", originType, taskID).
+		Order("id DESC").First(&activation).Error; err == nil {
+		if activation.ReplacementActivationStatus != nil {
+			result.ActivationStatus = *activation.ReplacementActivationStatus
+		}
+		if activation.ReplacementActivationErrorMessage != nil {
+			result.ActivationErrorMessage = *activation.ReplacementActivationErrorMessage
+		}
+		if result.ActivationStatus == "pending" || result.ActivationStatus == "failed" {
+			result.DisabledReason = result.ActivationErrorMessage
+			if result.DisabledReason == "" {
+				result.DisabledReason = "替换正在处理"
+			}
+			return result, nil
+		}
+	} else if !errors.Is(err, gorm.ErrRecordNotFound) {
+		return OriginInspection{}, internal(err)
+	}
+	if originType == models.ReplacementOriginPurchase && result.ShopeeProductID != 0 {
+		correctionID, err := service.correctionForOrigin(ctx, result.SourceProductID, result.ShopeeProductID)
+		if err != nil {
+			return OriginInspection{}, err
+		}
+		result.CorrectionReplacementID = correctionID
+	}
+	failed := status == models.TaskStatusFailed || status == models.PurchaseTaskStatusFailed
+	if !failed {
+		result.DisabledReason = "只有失败任务可以替换商品"
+		return result, nil
+	}
+	if errorCode == nil || (*errorCode != ErrorPDDLinkInvalid && *errorCode != ErrorPDDGoodsSoldOut) {
+		result.DisabledReason = "当前失败原因不属于商品失效或售罄"
+		return result, nil
+	}
+	result.Eligible = true
+	return result, nil
+}
+
+func (service *Service) activeForOrigin(ctx context.Context, origin OriginInspection) (string, bool, error) {
+	var record models.PDDProductReplacement
+	err := service.DB.WithContext(ctx).Where("source_product_id = ? AND status = ?", origin.SourceProductID, models.ReplacementStatusActive).First(&record).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return "", false, nil
+	}
+	if err != nil {
+		return "", false, internal(err)
+	}
+	var items []models.PDDProductReplacementItem
+	query := service.DB.WithContext(ctx).Where("replacement_id = ?", record.ID)
+	if origin.ShopeeProductID != 0 {
+		query = query.Where("shopee_product_id = ?", origin.ShopeeProductID)
+	}
+	if err := query.Find(&items).Error; err != nil {
+		return "", false, internal(err)
+	}
+	return derivedItemStatus(items), true, nil
+}
+
+func derivedItemStatus(items []models.PDDProductReplacementItem) string {
+	if len(items) == 0 {
+		return models.ReplacementItemMappingMatching
+	}
+	allMatched := true
+	for _, item := range items {
+		if item.MappingStatus == models.ReplacementItemMappingMatching {
+			return models.ReplacementItemMappingMatching
+		}
+		if item.MappingStatus != models.ReplacementItemMappingMatched {
+			allMatched = false
+		}
+	}
+	if allMatched {
+		return models.ReplacementItemMappingMatched
+	}
+	return models.ReplacementItemMappingManualRequired
+}
+
+func (service *Service) correctionForOrigin(ctx context.Context, targetProductID, shopeeProductID uint64) (uint64, error) {
+	var item models.PDDProductReplacementItem
+	err := service.DB.WithContext(ctx).
+		Joins("JOIN pdd_product_replacement r ON r.id = pdd_product_replacement_item.replacement_id").
+		Where("r.target_product_id = ? AND r.status = ? AND pdd_product_replacement_item.shopee_product_id = ?", targetProductID, models.ReplacementStatusActive, shopeeProductID).
+		Order("r.id DESC").First(&item).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) {
+		return 0, nil
+	}
+	if err != nil {
+		return 0, internal(err)
+	}
+	return item.ReplacementID, nil
+}
diff --git a/server/app/goauto/replacement/service_test.go b/server/app/goauto/replacement/service_test.go
index 83287c2..0b46e04 100644
--- a/server/app/goauto/replacement/service_test.go
+++ b/server/app/goauto/replacement/service_test.go
@@ -99,6 +99,40 @@ func replacementCode(err error) string {
 	return ""
 }
 
+func TestInspectOriginUsesExactFailureCodesAndDeviceBoundary(t *testing.T) {
+	fixture := seedReplacementFixture(t)
+	linkInvalid := ErrorPDDLinkInvalid
+	if err := fixture.db.Session(&gorm.Session{SkipHooks: true}).Model(&models.CollectionTask{}).Where("id = ?", fixture.origin.ID).Update("error_code", linkInvalid).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	inspection, err := fixture.service.InspectOrigin(context.Background(), models.ReplacementOriginCollection, fixture.origin.ID, fixture.device.ID)
+	if err != nil || !inspection.Eligible || inspection.SourceProductID != fixture.source.ID {
+		t.Fatalf("eligible collection origin: inspection=%+v error=%v", inspection, err)
+	}
+
+	notExact := "PDD_LINK_INVALID_RETRY"
+	if err := fixture.db.Session(&gorm.Session{SkipHooks: true}).Model(&models.CollectionTask{}).Where("id = ?", fixture.origin.ID).Update("error_code", notExact).Error; err != nil {
+		t.Fatal(err)
+	}
+	inspection, err = fixture.service.InspectOrigin(context.Background(), models.ReplacementOriginCollection, fixture.origin.ID, fixture.device.ID)
+	if err != nil || inspection.Eligible || inspection.DisabledReason == "" {
+		t.Fatalf("non-exact code must be disabled: inspection=%+v error=%v", inspection, err)
+	}
+
+	otherDevice := fixture.device
+	otherDevice.ID = 0
+	otherDevice.InstallID = uuid.NewString()
+	otherDevice.TokenDigest = strings.Repeat("a", 64)
+	if err := fixture.db.Create(&otherDevice).Error; err != nil {
+		t.Fatal(err)
+	}
+	_, err = fixture.service.InspectOrigin(context.Background(), models.ReplacementOriginCollection, fixture.origin.ID, otherDevice.ID)
+	if replacementCode(err) != CodeOriginTaskNotFound {
+		t.Fatalf("cross-device origin must be hidden, got %v", err)
+	}
+}
+
 func TestRegisterAndQueryCollectionOrigin(t *testing.T) {
 	fixture := seedReplacementFixture(t)
 	request := fixture.request()
diff --git a/server/app/goauto/task/agent_history.go b/server/app/goauto/task/agent_history.go
index 8982b56..29cf285 100644
--- a/server/app/goauto/task/agent_history.go
+++ b/server/app/goauto/task/agent_history.go
@@ -10,6 +10,7 @@ import (
 
 	"go-admin/app/goauto/device"
 	"go-admin/app/goauto/models"
+	"go-admin/app/goauto/replacement"
 
 	"gorm.io/gorm"
 )
@@ -46,14 +47,19 @@ type AgentCollectionList struct {
 }
 
 type AgentCollectionDetail struct {
-	Task        AgentCollectionItem  `json:"task"`
-	ShopName    *string              `json:"shopName,omitempty"`
-	SalesText   *string              `json:"salesText,omitempty"`
-	ReviewCount *int64               `json:"reviewCount,omitempty"`
-	Dimensions  []DetailDimension    `json:"dimensions"`
-	ColorPrices []AgentColorPrice    `json:"colorPrices"`
-	SKUs        []AgentCollectionSKU `json:"skus"`
-	Missing     []string             `json:"missing"`
+	Task                              AgentCollectionItem  `json:"task"`
+	ShopName                          *string              `json:"shopName,omitempty"`
+	SalesText                         *string              `json:"salesText,omitempty"`
+	ReviewCount                       *int64               `json:"reviewCount,omitempty"`
+	Dimensions                        []DetailDimension    `json:"dimensions"`
+	ColorPrices                       []AgentColorPrice    `json:"colorPrices"`
+	SKUs                              []AgentCollectionSKU `json:"skus"`
+	Missing                           []string             `json:"missing"`
+	ReplacementEligible               bool                 `json:"replacementEligible"`
+	ReplacementDisabledReason         string               `json:"replacementDisabledReason,omitempty"`
+	ReplacementMappingStatus          string               `json:"replacementMappingStatus,omitempty"`
+	ReplacementActivationStatus       string               `json:"replacementActivationStatus,omitempty"`
+	ReplacementActivationErrorMessage string               `json:"replacementActivationErrorMessage,omitempty"`
 }
 
 type AgentColorPrice struct {
@@ -137,6 +143,10 @@ func (service *Service) AgentHistoryDetail(ctx context.Context, taskID uint64, t
 	if err != nil {
 		return AgentCollectionDetail{}, err
 	}
+	inspection, err := replacement.NewService(service.DB).InspectOrigin(ctx, models.ReplacementOriginCollection, taskID, deviceRecord.ID)
+	if err != nil {
+		return AgentCollectionDetail{}, internalError(err)
+	}
 	colorPrices := make([]AgentColorPrice, 0, len(detail.ColorPrices))
 	for _, value := range detail.ColorPrices {
 		colorPrices = append(colorPrices, AgentColorPrice{Color: value.Color, PriceCent: value.PriceCent})
@@ -149,6 +159,9 @@ func (service *Service) AgentHistoryDetail(ctx context.Context, taskID uint64, t
 		Task: agentCollectionItem(record), ShopName: record.ShopName, SalesText: record.SalesText,
 		ReviewCount: record.ReviewCount, Dimensions: detail.Dimensions, ColorPrices: colorPrices,
 		SKUs: skus, Missing: detail.Missing,
+		ReplacementEligible: inspection.Eligible, ReplacementDisabledReason: inspection.DisabledReason,
+		ReplacementMappingStatus: inspection.MappingStatus, ReplacementActivationStatus: inspection.ActivationStatus,
+		ReplacementActivationErrorMessage: inspection.ActivationErrorMessage,
 	}, nil
 }
 
diff --git a/server/app/goauto/task/current_page.go b/server/app/goauto/task/current_page.go
index a818047..7635e9d 100644
--- a/server/app/goauto/task/current_page.go
+++ b/server/app/goauto/task/current_page.go
@@ -14,6 +14,7 @@ import (
 
 	"go-admin/app/goauto/device"
 	"go-admin/app/goauto/models"
+	"go-admin/app/goauto/replacement"
 	"go-admin/app/goauto/rulecontract"
 
 	"github.com/google/uuid"
@@ -29,7 +30,13 @@ const (
 )
 
 type CurrentPageCreateRequest struct {
-	RequestID string `json:"requestId"`
+	RequestID         string                    `json:"requestId"`
+	ReplacementOrigin *ReplacementOriginRequest `json:"replacementOrigin,omitempty"`
+}
+
+type ReplacementOriginRequest struct {
+	Type   string `json:"type"`
+	TaskID uint64 `json:"taskId"`
 }
 
 type CurrentPageIdentifyRequest struct {
@@ -69,6 +76,9 @@ func (service *Service) CreateCurrentPage(ctx context.Context, request CurrentPa
 			if replay.Source != models.CollectionTaskSourceAgentCurrentPage || replay.DeviceID == nil || *replay.DeviceID != deviceRecord.ID {
 				return serviceError(CodeTaskStateConflict, "requestId 已被其他任务使用")
 			}
+			if !sameReplacementOrigin(replay, request.ReplacementOrigin) {
+				return serviceError(CodeTaskStateConflict, "requestId 的替换来源不一致")
+			}
 			response, err = service.payload(replay, true)
 			return err
 		} else if !errors.Is(err, gorm.ErrRecordNotFound) {
@@ -116,6 +126,22 @@ func (service *Service) CreateCurrentPage(ctx context.Context, request CurrentPa
 			LeaseExpiresAt: &lease, LeaseVersion: 1, CreateRequestID: &request.RequestID,
 			StartRequestID: &request.RequestID, StartedAt: &now,
 		}
+		if request.ReplacementOrigin != nil {
+			inspection, err := replacement.NewService(tx).InspectOrigin(ctx, request.ReplacementOrigin.Type, request.ReplacementOrigin.TaskID, deviceRecord.ID)
+			if err != nil {
+				return err
+			}
+			if !inspection.Eligible {
+				return serviceError(replacement.CodeOriginNotEligible, inspection.DisabledReason)
+			}
+			pending := "pending"
+			task.ReplacementOriginType = &request.ReplacementOrigin.Type
+			task.ReplacementOriginTaskID = &request.ReplacementOrigin.TaskID
+			task.ReplacementActivationStatus = &pending
+			if inspection.CorrectionReplacementID != 0 {
+				task.ReplacementCorrectionID = &inspection.CorrectionReplacementID
+			}
+		}
 		if err := tx.Create(&task).Error; err != nil {
 			return internalError(err)
 		}
@@ -125,6 +151,13 @@ func (service *Service) CreateCurrentPage(ctx context.Context, request CurrentPa
 	return response, err
 }
 
+func sameReplacementOrigin(task models.CollectionTask, origin *ReplacementOriginRequest) bool {
+	if origin == nil {
+		return task.ReplacementOriginType == nil && task.ReplacementOriginTaskID == nil
+	}
+	return task.ReplacementOriginType != nil && task.ReplacementOriginTaskID != nil && *task.ReplacementOriginType == origin.Type && *task.ReplacementOriginTaskID == origin.TaskID
+}
+
 func ensureCurrentPageRule(content string) error {
 	var header struct {
 		SchemaVersion int `json:"schemaVersion"`
diff --git a/server/app/goauto/task/current_page_test.go b/server/app/goauto/task/current_page_test.go
index 68ebb9d..0993c77 100644
--- a/server/app/goauto/task/current_page_test.go
+++ b/server/app/goauto/task/current_page_test.go
@@ -134,6 +134,90 @@ func TestCurrentPageTaskRequiresConfiguredRuleAndCapability(t *testing.T) {
 	}
 }
 
+func TestCreateCurrentPagePersistsEligibleReplacementOrigin(t *testing.T) {
+	db := openTaskDatabase(t)
+	deviceRecord, token := registerTaskDeviceWithCapabilities(t, db, "replacement-device", []string{
+		rulecontract.CapabilitySchemaV2,
+		rulecontract.CapabilityPDDProductDetailV1,
+		rulecontract.CapabilityPDDCurrentPageShareV1,
+	})
+	rule := models.CollectionRule{Name: "current-page-rule", ContentJSON: v2TaskRuleSnapshot()}
+	if err := db.Create(&rule).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err := db.Create(&models.AgentManualCollectionSetting{ID: 1, RuleID: rule.ID}).Error; err != nil {
+		t.Fatal(err)
+	}
+	product := models.PDDProduct{GoodsID: "700000000130", URL: "https://mobile.yangkeduo.com/goods.html?goods_id=700000000130", Status: "disabled"}
+	if err := db.Create(&product).Error; err != nil {
+		t.Fatal(err)
+	}
+	shopee := models.ShopeeProduct{
+		ShopeeItemID: "shopee-130", Title: "待替换商品", PDDProductID: &product.ID,
+		SpecsJSON: `[{"name":"颜色","shopeeValue":"黑色","pddValue":"黑色"}]`,
+	}
+	if err := db.Create(&shopee).Error; err != nil {
+		t.Fatal(err)
+	}
+	errorCode := "PDD_GOODS_SOLD_OUT"
+	origin := models.CollectionTask{
+		PDDProductID: &product.ID, RuleID: rule.ID, DeviceID: &deviceRecord.ID,
+		Status: models.TaskStatusFailed, ErrorCode: &errorCode, URLSnapshot: product.URL,
+		GoodsIDSnapshot: product.GoodsID, RuleSnapshot: rule.ContentJSON,
+	}
+	if err := db.Create(&origin).Error; err != nil {
+		t.Fatal(err)
+	}
+	requestID := uuid.NewString()
+	request := CurrentPageCreateRequest{
+		RequestID:         requestID,
+		ReplacementOrigin: &ReplacementOriginRequest{Type: models.ReplacementOriginCollection, TaskID: origin.ID},
+	}
+	created, err := newTaskService(db).CreateCurrentPage(context.Background(), request, token)
+	if err != nil {
+		t.Fatalf("create replacement collection: %v", err)
+	}
+	var persisted models.CollectionTask
+	if err := db.First(&persisted, created.TaskID).Error; err != nil {
+		t.Fatal(err)
+	}
+	if persisted.ReplacementOriginType == nil || *persisted.ReplacementOriginType != models.ReplacementOriginCollection ||
+		persisted.ReplacementOriginTaskID == nil || *persisted.ReplacementOriginTaskID != origin.ID ||
+		persisted.ReplacementActivationStatus == nil || *persisted.ReplacementActivationStatus != "pending" {
+		t.Fatalf("replacement context was not persisted: %+v", persisted)
+	}
+	replay, err := newTaskService(db).CreateCurrentPage(context.Background(), request, token)
+	if err != nil || !replay.Replayed || replay.TaskID != created.TaskID {
+		t.Fatalf("replacement replay mismatch: response=%+v error=%v", replay, err)
+	}
+	identity, err := newTaskService(db).IdentifyCurrentPage(context.Background(), created.TaskID, CurrentPageIdentifyRequest{
+		RequestID: uuid.NewString(), ShareURL: "https://mobile.yangkeduo.com/goods.html?goods_id=700000000131",
+	}, token)
+	if err != nil {
+		t.Fatalf("identify replacement target: %v", err)
+	}
+	title := "替代商品"
+	detail, err := newTaskService(db).SubmitResult(context.Background(), created.TaskID, ResultRequest{
+		RequestID: uuid.NewString(), Status: models.TaskStatusCompleted,
+		Product:     ResultProduct{PDDGoodsID: identity.GoodsID, Title: &title},
+		Dimensions:  []ResultDimension{{Key: "color", Name: "颜色", Values: []string{"白色"}}},
+		ColorPrices: []ResultColorPrice{{Color: "白色", PriceCent: 1300}},
+		SKUs:        []ResultSKU{{Specs: map[string]string{"color": "白色"}, PriceCent: 1300, Available: true}},
+	}, token)
+	if err != nil || detail.Task.Status != models.TaskStatusCompleted {
+		t.Fatalf("replacement result: detail=%+v error=%v", detail, err)
+	}
+	if err := db.First(&persisted, created.TaskID).Error; err != nil {
+		t.Fatal(err)
+	}
+	if persisted.ReplacementActivationStatus == nil || *persisted.ReplacementActivationStatus != "activated" || persisted.ReplacementID == nil {
+		t.Fatalf("replacement was not activated: %+v", persisted)
+	}
+	if err := db.First(&shopee, shopee.ID).Error; err != nil || shopee.PDDProductID == nil || *shopee.PDDProductID != identity.PDDProductID {
+		t.Fatalf("shopee product was not relinked: product=%+v error=%v", shopee, err)
+	}
+}
+
 func TestResolvePDDShareURLRejectsUnsafeOrAmbiguousIdentity(t *testing.T) {
 	valid, err := ResolvePDDShareURL(context.Background(), "https://mobile.yangkeduo.com/goods.html?goods_id=972800403573")
 	if err != nil || valid.GoodsID != "972800403573" {
diff --git a/server/app/goauto/task/handler.go b/server/app/goauto/task/handler.go
index 67e03e2..5f45779 100644
--- a/server/app/goauto/task/handler.go
+++ b/server/app/goauto/task/handler.go
@@ -10,6 +10,7 @@ import (
 	"strings"
 
 	"go-admin/app/goauto/device"
+	"go-admin/app/goauto/replacement"
 
 	"github.com/gin-gonic/gin"
 	"github.com/go-admin-team/go-admin-core/sdk/pkg"
@@ -286,6 +287,8 @@ func writeError(context *gin.Context, err error) {
 		status = http.StatusNotFound
 	case CodeTaskAlreadyClaimed, CodeTaskAssignedOther, CodeDeviceBusy, CodeDeviceOffline, CodeTaskStateConflict, CodeTaskLeaseExpired, CodeCurrentPageIdentityRequired, CodeCurrentPageIdentityConflict:
 		status = http.StatusConflict
+	case replacement.CodeOriginNotEligible, CodeReplacementActivationFailed:
+		status = http.StatusConflict
 	case CodeProductTaskActive, CodeProductDisabled:
 		status = http.StatusConflict
 	case CodeProductNotFound, CodeRuleNotFound, CodeDeviceNotFound, CodeAgentManualRuleNotConfigured:
diff --git a/server/app/goauto/task/replacement_activation.go b/server/app/goauto/task/replacement_activation.go
new file mode 100644
index 0000000..7813ee7
--- /dev/null
+++ b/server/app/goauto/task/replacement_activation.go
@@ -0,0 +1,107 @@
+package task
+
+import (
+	"context"
+	"errors"
+	"time"
+
+	"go-admin/app/goauto/models"
+	"go-admin/app/goauto/replacement"
+
+	"gorm.io/gorm"
+)
+
+const CodeReplacementActivationFailed = "REPLACEMENT_ACTIVATION_FAILED"
+
+func (service *Service) activatePersistedReplacement(ctx context.Context, taskID uint64) error {
+	var task models.CollectionTask
+	if err := service.DB.WithContext(ctx).First(&task, taskID).Error; err != nil {
+		return internalError(err)
+	}
+	if task.ReplacementOriginType == nil || task.ReplacementOriginTaskID == nil {
+		return nil
+	}
+	if task.ReplacementActivationStatus != nil && *task.ReplacementActivationStatus == "activated" {
+		return nil
+	}
+	if task.Status != models.TaskStatusCompleted && task.Status != models.TaskStatusCompletedPartial {
+		return nil
+	}
+	if task.PDDProductID == nil || task.DeviceID == nil || task.CreateRequestID == nil {
+		return service.markReplacementActivationFailed(ctx, task, "REPLACEMENT_CONTEXT_INVALID", "替换采集上下文不完整")
+	}
+	inspection, err := replacement.NewService(service.DB).InspectOrigin(ctx, *task.ReplacementOriginType, *task.ReplacementOriginTaskID, *task.DeviceID)
+	if err != nil {
+		return service.markReplacementActivationFailed(ctx, task, replacementErrorCode(err), "来源任务重新校验失败")
+	}
+	request := replacement.RegisterRequest{
+		RequestID: *task.CreateRequestID, SourceProductID: inspection.SourceProductID, TargetProductID: *task.PDDProductID,
+		OriginType: *task.ReplacementOriginType, OriginTaskID: *task.ReplacementOriginTaskID,
+		TargetCollectionTaskID: task.ID, CreatedByDeviceID: *task.DeviceID,
+	}
+	replacementService := replacement.NewService(service.DB)
+	var result replacement.ActivationResult
+	if task.ReplacementCorrectionID != nil {
+		result, err = replacementService.CorrectAndActivate(ctx, *task.ReplacementCorrectionID, request)
+	} else {
+		result, err = replacementService.RegisterAndActivate(ctx, request)
+	}
+	if err != nil {
+		return service.markReplacementActivationFailed(ctx, task, replacementErrorCode(err), "采集成功，但替换生效失败")
+	}
+	now := service.Now()
+	activated := "activated"
+	if err := service.DB.WithContext(ctx).Session(&gorm.Session{SkipHooks: true}).Model(&models.CollectionTask{}).Where("id = ? AND replacement_activation_status <> ?", task.ID, activated).
+		Updates(map[string]any{"replacement_activation_status": activated, "replacement_id": result.Record.Replacement.ID, "replacement_activation_error_code": nil, "replacement_activation_error_message": nil, "replacement_activated_at": now}).Error; err != nil {
+		return internalError(err)
+	}
+	return nil
+}
+
+func (service *Service) markReplacementActivationFailed(ctx context.Context, task models.CollectionTask, code, message string) error {
+	failed := "failed"
+	code = compactReplacementText(code, 64)
+	message = compactReplacementText(message, 500)
+	if err := service.DB.WithContext(ctx).Session(&gorm.Session{SkipHooks: true}).Model(&models.CollectionTask{}).Where("id = ?", task.ID).Updates(map[string]any{
+		"replacement_activation_status": failed, "replacement_activation_error_code": code, "replacement_activation_error_message": message,
+	}).Error; err != nil {
+		return internalError(err)
+	}
+	return &ServiceError{Code: CodeReplacementActivationFailed, Message: message, Retryable: true}
+}
+
+func replacementErrorCode(err error) string {
+	var target *replacement.ServiceError
+	if errors.As(err, &target) {
+		return target.Code
+	}
+	return CodeReplacementActivationFailed
+}
+
+func compactReplacementText(value string, limit int) string {
+	runes := []rune(value)
+	if len(runes) > limit {
+		return string(runes[:limit])
+	}
+	return value
+}
+
+// RecoverReplacementActivations resumes already-collected replacement tasks.
+// It never recollects product data and all writes remain idempotent.
+func RecoverReplacementActivations(db *gorm.DB) {
+	go func() {
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
+		defer cancel()
+		var tasks []models.CollectionTask
+		if err := db.WithContext(ctx).Where("replacement_activation_status IN ? AND status IN ?", []string{"pending", "failed"}, []string{models.TaskStatusCompleted, models.TaskStatusCompletedPartial}).Order("id").Find(&tasks).Error; err != nil {
+			return
+		}
+		service := NewService(db)
+		for _, task := range tasks {
+			if ctx.Err() != nil {
+				return
+			}
+			_ = service.activatePersistedReplacement(ctx, task.ID)
+		}
+	}()
+}
diff --git a/server/app/goauto/task/result_service.go b/server/app/goauto/task/result_service.go
index f8c96a6..a0e1777 100644
--- a/server/app/goauto/task/result_service.go
+++ b/server/app/goauto/task/result_service.go
@@ -117,6 +117,9 @@ func (service *Service) SubmitResult(ctx context.Context, taskID uint64, request
 	if err != nil {
 		return DetailResponse{}, err
 	}
+	if err := service.activatePersistedReplacement(ctx, taskID); err != nil {
+		return DetailResponse{}, err
+	}
 	detail, err := service.Detail(ctx, taskID)
 	detail.Replayed = replayed
 	return detail, err
diff --git a/server/app/goauto/task/service.go b/server/app/goauto/task/service.go
index 5729eb6..0e29510 100644
--- a/server/app/goauto/task/service.go
+++ b/server/app/goauto/task/service.go
@@ -51,18 +51,19 @@ type ActionRequest struct {
 }
 
 type TaskPayload struct {
-	TaskID          uint64          `json:"taskId"`
-	PDDProductID    *uint64         `json:"pddProductId"`
-	URLSnapshot     string          `json:"urlSnapshot"`
-	GoodsIDSnapshot string          `json:"goodsIdSnapshot"`
-	Source          string          `json:"source"`
-	RuleID          uint64          `json:"ruleId"`
-	RuleSnapshot    json.RawMessage `json:"ruleSnapshot"`
-	TimeoutSeconds  int             `json:"timeoutSeconds"`
-	LeaseExpiresAt  *time.Time      `json:"leaseExpiresAt,omitempty"`
-	LeaseVersion    uint64          `json:"leaseVersion"`
-	Status          string          `json:"status"`
-	Replayed        bool            `json:"replayed,omitempty"`
+	TaskID                uint64          `json:"taskId"`
+	PDDProductID          *uint64         `json:"pddProductId"`
+	URLSnapshot           string          `json:"urlSnapshot"`
+	GoodsIDSnapshot       string          `json:"goodsIdSnapshot"`
+	Source                string          `json:"source"`
+	ReplacementOriginType string          `json:"replacementOriginType,omitempty"`
+	RuleID                uint64          `json:"ruleId"`
+	RuleSnapshot          json.RawMessage `json:"ruleSnapshot"`
+	TimeoutSeconds        int             `json:"timeoutSeconds"`
+	LeaseExpiresAt        *time.Time      `json:"leaseExpiresAt,omitempty"`
+	LeaseVersion          uint64          `json:"leaseVersion"`
+	Status                string          `json:"status"`
+	Replayed              bool            `json:"replayed,omitempty"`
 }
 
 type Service struct {
@@ -290,13 +291,20 @@ func (service *Service) payload(record models.CollectionTask, replayed bool) (Ta
 	return TaskPayload{
 		TaskID: record.ID, PDDProductID: record.PDDProductID,
 		URLSnapshot: record.URLSnapshot, GoodsIDSnapshot: record.GoodsIDSnapshot,
-		Source: record.Source,
+		Source: record.Source, ReplacementOriginType: pointerValue(record.ReplacementOriginType),
 		RuleID: record.RuleID, RuleSnapshot: rule, TimeoutSeconds: timeout,
 		LeaseExpiresAt: record.LeaseExpiresAt, LeaseVersion: record.LeaseVersion,
 		Status: record.Status, Replayed: replayed,
 	}, nil
 }
 
+func pointerValue(value *string) string {
+	if value == nil {
+		return ""
+	}
+	return *value
+}
+
 func (service *Service) leaseDuration() time.Duration {
 	if service.LeaseDuration <= 0 {
 		return DefaultLeaseDuration
diff --git a/server/cmd/api/server.go b/server/cmd/api/server.go
index bb63d48..769d1f3 100644
--- a/server/cmd/api/server.go
+++ b/server/cmd/api/server.go
@@ -24,6 +24,7 @@ import (
 	goautoreplacement "go-admin/app/goauto/replacement"
 	goautosybimport "go-admin/app/goauto/sybimport"
 	goautosybinnercode "go-admin/app/goauto/sybinnercode"
+	goautotask "go-admin/app/goauto/task"
 	"go-admin/app/jobs"
 	"go-admin/common/database"
 	"go-admin/common/global"
@@ -100,6 +101,7 @@ func run() error {
 			return fmt.Errorf("recover interrupted SYB inner-code writes: %w", err)
 		}
 		goautoreplacement.RecoverMatching(db)
+		goautotask.RecoverReplacementActivations(db)
 	}
 	offlineMonitorContext, stopOfflineMonitors := context.WithCancel(context.Background())
 	defer stopOfflineMonitors()
diff --git a/server/cmd/migrate/migration/version-local/1787885200000_agent_product_replacement.go b/server/cmd/migrate/migration/version-local/1787885200000_agent_product_replacement.go
new file mode 100644
index 0000000..0a8d8cb
--- /dev/null
+++ b/server/cmd/migrate/migration/version-local/1787885200000_agent_product_replacement.go
@@ -0,0 +1,25 @@
+package version_local
+
+import (
+	"runtime"
+
+	goautomigrations "go-admin/app/goauto/migrations"
+	"go-admin/cmd/migrate/migration"
+	common "go-admin/common/models"
+
+	"gorm.io/gorm"
+)
+
+func init() {
+	_, fileName, _, _ := runtime.Caller(0)
+	migration.Migrate.SetVersion(migration.GetFilename(fileName), migrateAgentProductReplacement)
+}
+
+func migrateAgentProductReplacement(db *gorm.DB, version string) error {
+	return db.Transaction(func(tx *gorm.DB) error {
+		if err := goautomigrations.Migrate(tx); err != nil {
+			return err
+		}
+		return tx.Create(&common.Migration{Version: version}).Error
+	})
+}