diff --git a/src/components/RelabelPalletWork.vue b/src/components/RelabelPalletWork.vue
index 2f4cdcd..83dbfbe 100644
--- a/src/components/RelabelPalletWork.vue
+++ b/src/components/RelabelPalletWork.vue
@@ -12,11 +12,12 @@
     <view v-if="rebindSelection"><text class="hint">正在改绑：{{ rebindSelection.mark }}，当前托盘：{{ rebindSelection.pallet }}</text><button :disabled="busy" @tap="rebindSelection = null; targetCode = ''; target = null">取消改绑</button></view>
     <template v-if="!allBindingsComplete && !rebindSelection">
     <view v-for="row in operableSourceRows" :key="row.positionId" class="source-row" :class="{ selected: selectedSource?.positionId === row.positionId }" @tap="selectSource(row)">
-      <view class="source-identifiers"><view class="source-identifier"><text class="source-caption">托盘号</text><text class="source-code">{{ row.palletCode }}</text></view></view>
+      <view class="source-identifiers"><view v-if="!unboundSourceMode" class="source-identifier"><text class="source-caption">托盘号</text><text class="source-code">{{ row.palletCode }}</text></view><view v-else class="source-identifier"><text class="source-caption">来源箱</text><text class="source-code">{{ (row.cartonMarks || []).join('、') }}</text></view></view>
       <text class="source-quantity">{{ isReturnBulk ? '件数' : '箱数' }}：{{ row.stockPackages }} · 可拆{{ isReturnBulk ? '件数' : '箱数' }}：{{ row.movablePackages }}</text>
     </view>
-    <text v-if="!busy && !operableSourceRows.length" class="hint">当前没有可操作的来源托盘</text>
-    <ScanTargetInput v-if="!isReturnBulk" v-model="sourceCode" name="relabel-source" label="实际来源托盘" placeholder="扫描实际来源托盘" :active="active === 'source'" @activate="activate('source')" @submit="confirmSourceScan" />
+    <text v-if="!busy && !operableSourceRows.length" class="hint">当前没有可操作的来源托盘或来源箱</text>
+    <ScanTargetInput v-if="!isReturnBulk && !unboundSourceMode" v-model="sourceCode" name="relabel-source" label="实际来源托盘" placeholder="扫描实际来源托盘" :active="active === 'source'" @activate="activate('source')" @submit="confirmSourceScan" />
+    <ScanTargetInput v-if="unboundSourceMode" v-model="sourceCode" name="relabel-source-carton" label="来源箱唛" placeholder="扫描来源箱唛确认" :active="active === 'source'" @activate="activate('source')" @submit="confirmSourceScan" />
     <text v-if="source" class="hint">来源已确认：{{ source.palletCode }}；尚未拆出，请完成贴标登记、核对拆出数量并扫描目标托盘，绑定成功后才保存拆托明细。</text>
     <view v-if="selectedSource">
       <text v-if="isReturnBulk" class="hint">本次{{ wholeSource ? '整托换标数量' : '拆出件数' }}（可分多个来源托盘，逐批提交）</text>
@@ -86,7 +87,8 @@ export default {
       return '本托盘还有未完成的换标明细，请先完成贴标登记，再确认目标托盘绑定。'
     },
     wholeSource() { return this.isReturnBulk && this.selectedSource && (!this.allowDisassemble || this.plannedPackages === Number(this.selectedSource.stockPackages || 0)) },
-    readyToBind() { return this.source && this.target && this.selectedSource && this.samePallet(this.source, this.selectedSource) && !this.samePallet(this.source, this.target) && Number.isSafeInteger(Number(this.quantity)) && Number(this.quantity) > 0 && Number(this.quantity) <= this.selectedSource.movablePackages && this.bindingSelectionValid() }
+    unboundSourceMode() { return !this.isReturnBulk && this.operableSourceRows.length > 0 && (this.selectedSource ? (!this.selectedSource.palletCode || this.selectedSource.palletCode === 'UNBOUND') : this.operableSourceRows.every(row => !row.palletCode || row.palletCode === 'UNBOUND')) },
+    readyToBind() { return this.target && this.selectedSource && (this.unboundSourceMode || (this.source && this.samePallet(this.source, this.selectedSource) && !this.samePallet(this.source, this.target))) && Number.isSafeInteger(Number(this.quantity)) && Number(this.quantity) > 0 && Number(this.quantity) <= this.selectedSource.movablePackages && this.bindingSelectionValid() }
   },
   methods: {
     savePalletTotals(result) { for (const pallet of result?.pallets || []) this.palletTotals = { ...this.palletTotals, [pallet.palletCode]: pallet } },
@@ -142,6 +144,12 @@ export default {
       if (this.busy) return
       this.rebindSelection = null; this.selectedSource = row; this.source = null; this.sourceCode = ''; this.quantity = ''; this.marks = []
       this.selectedDestination = (this.isReturnBulk ? this.sourceItems() : this.completedItems())[0]?.destinationFbaWarehouseCode || ''
+      if (this.unboundSourceMode) {
+        this.marks = this.completedItems().map(item => item.cartonMark)
+        this.quantity = String(this.marks.length)
+        this.activate('target')
+        return
+      }
       if (this.isReturnBulk) {
         const items = this.eligibleItems
         this.marks = items.map(item => item.cartonMark)
@@ -172,9 +180,19 @@ export default {
     },
     async confirmSourceScan() {
       if (this.busy || !this.sourceCode.trim()) return
-      const matched = this.operableSourceRows.find(row => this.samePallet(row, { palletCode: this.sourceCode }))
+      const matched = this.unboundSourceMode
+        ? this.operableSourceRows.find(row => (row.cartonMarks || []).some(mark => String(mark).trim().toUpperCase() === this.sourceCode.trim().toUpperCase()))
+        : this.operableSourceRows.find(row => this.samePallet(row, { palletCode: this.sourceCode }))
       this.source = null
       if (!matched) { this.error = '该托盘不在本单可操作的来源托盘列表中'; this.showBindingMessage('来源托盘不匹配', this.error); return }
+      if (this.unboundSourceMode) {
+        this.selectedSource = matched
+        this.selectedDestination = this.completedItems()[0]?.destinationFbaWarehouseCode || ''
+        this.marks = this.completedItems().map(item => item.cartonMark)
+        this.quantity = String(this.marks.length)
+        this.activate('target')
+        return
+      }
       await this.resolve('source')
       if (this.error || !this.source) return
       const source = this.source; this.source = null
@@ -193,8 +211,9 @@ export default {
       }
       this.message = ''
       let reason = ''
-      if (!this.selectedSource) reason = '请先选择实际拆出货物的来源托盘。'
-      else if (!this.samePallet(this.source, this.selectedSource)) reason = this.isReturnBulk ? '来源托盘识别失败，请重新选择。' : '请先扫描并确认实际来源托盘；选择来源列表不等于扫描确认。'
+      if (!this.selectedSource) reason = '请先选择实际拆出货物的来源托盘或来源箱。'
+      else if (this.unboundSourceMode && !this.bindingSelectionValid()) reason = '请先完成来源箱换标，再绑定目标托盘。'
+      else if (!this.unboundSourceMode && !this.samePallet(this.source, this.selectedSource)) reason = this.isReturnBulk ? '来源托盘识别失败，请重新选择。' : '请先扫描并确认实际来源托盘；选择来源列表不等于扫描确认。'
       else if (this.isReturnBulk && this.completedItems().length !== this.eligibleItems.length) reason = '请先完成本托盘的 SKU 贴标登记，再绑定新托盘；整托无需填写拆箱数量。'
       else if (!Number.isSafeInteger(Number(this.quantity)) || Number(this.quantity) <= 0 || Number(this.quantity) > this.selectedSource.movablePackages) reason = this.isReturnBulk ? '本托盘可操作件数不足，请刷新来源托盘。' : '请填写有效的拆出箱数，不能超过来源托盘可拆数量。'
       else if (!this.selectedDestination || !this.bindingSelectionValid()) reason = this.isReturnBulk ? `本托盘拆箱数量必须等于贴标预报分配数量 ${this.plannedPackages} 件。` : '本次拆出箱数必须对应已完成换标且尚未拆出的同目的仓箱唛。'
@@ -202,7 +221,7 @@ export default {
       if (reason) { this.error = reason; this.showBindingMessage('尚未绑定', reason); return }
       await this.resolve('target')
       if (this.error) { this.showBindingMessage('绑定失败', this.error); return }
-      if (!this.readyToBind) { this.error = '来源和目标托盘不能相同，请核对后重新确认。'; this.showBindingMessage('尚未绑定', this.error); return }
+      if (!this.readyToBind) { this.error = '请核对来源箱、目标托盘和换标数量后重新确认。'; this.showBindingMessage('尚未绑定', this.error); return }
       if (!await this.confirmBindingChoice(`是否绑定目标托盘 ${this.target.palletCode}（${this.quantity} ${this.isReturnBulk ? '件' : '箱'}）？`)) { this.target = null; return }
       await this.bind()
     },
@@ -238,7 +257,7 @@ export default {
     async bind() {
       if (!this.readyToBind) { this.error = '请核对来源托盘、拆出箱数、本批箱唛和目标托盘'; return }
       const expectation = value => ({ palletCode: value.palletCode, expectedVersion: value.palletVersion })
-      const payload = { relabelNo: this.task.relabelNo, source: expectation(this.source), target: expectation(this.target), cartonMarks: [...this.marks], actualSource: { positionId: this.selectedSource.positionId, expectedPositionVersion: this.selectedSource.positionVersion, packages: Number(this.quantity) }, reason: 'PDA 按原入仓单箱数拆托并按新目的仓合托' }
+      const payload = { relabelNo: this.task.relabelNo, ...(this.unboundSourceMode ? {} : { source: expectation(this.source), actualSource: { positionId: this.selectedSource.positionId, expectedPositionVersion: this.selectedSource.positionVersion, packages: Number(this.quantity) } }), target: expectation(this.target), cartonMarks: [...this.marks], reason: this.unboundSourceMode ? 'PDA 扫描无来源托盘退货箱并绑定目的托盘' : 'PDA 按原入仓单箱数拆托并按新目的仓合托' }
       const key = warehouseIdempotencyKey('relabel', 'bind-pallet', payload)
       let saved = false
       await this.run(async () => { await bindRelabelPallet({ ...payload, idempotencyKey: key.value }); saved = true; releaseWarehouseKey('relabel', key.signature); const createdKey = warehouseIdempotencyKey('relabel', 'new-pallet', { relabelNo: this.task.relabelNo }); releaseWarehouseKey('relabel', createdKey.signature); this.message = `托盘 ${this.target.palletCode} 已绑定`; this.marks = []; this.source = null; this.target = null; this.newPallet = null; this.sourceCode = ''; this.targetCode = ''; this.$emit('saved'); this.activate('source') })