feat(consignment): 后端支持"手动指定现货"匹配（含规格冲突强制匹配留痕）

需求：客服在后台能人工指定现货与订单匹配，而不是只能用系统算出的候选。

- 新增纯函数 listConsignmentMatchOptions()/classifyConsignmentMatch()：把某订单的**全部**
  在库现货列出来并逐件判定 exact/partial/conflict，conflict 时给出字段级差异
  （describeConsignmentSpecDifferences，例如「系统：订单「苹果」/ 现货「安卓」」）
- 新增 describeWorkOrderSpecConflicts()：强制匹配时把差异写进工单 material 与事件留痕
- fulfill/assign 两条落地链路支持 allowSpecMismatch（规格真冲突显式放行）+ matchNote
  （强制匹配必填原因，否则 400 consignment_match_note_required），
  material 与工单事件都记录 manualMatch/matchType/matchNote
- 新增两个只读接口：订单侧 GET /consignment/matches/:workOrderId/options（全部在库现货+判定），
  库存侧 GET /consignment/inventories/:id/match-orders（该现货可匹配的待指派/待补资料订单+判定）
- 抽取 classifyConsignmentMatch 让正反两个方向共用同一套匹配口径，避免"界面说能选、接口却拒绝"

真实库验证：订单要苹果微信暗潮2钻、现货为安卓QQ苍龙4钻时正确判定 conflict 并列出 4 项差异；
不填原因强制匹配被拒（consignment_match_note_required）；不强制则被规格复检拒绝
（consignment_spec_mismatch）；填原因强制匹配成功且工单事件与 material 都有留痕。

apps/backend/src/routes/admin/worker-platform/consignment.ts

@@ -25,6 +25,11 @@ import {
   normalizeWorkerDepositHandling,
 } from '../../../domain/consignment-deposit-policy.js'
 
+import {
+  listInventoryMatchableOrders,
+  listWorkOrderInventoryMatchOptions,
+} from '../../../services/worker-platform/consignment-fulfillment-service.js'
+
 const router = Router()
 
 // ---------------- 库存管理与统计 ----------------
@@ -202,6 +207,38 @@ router.get(
   }),
 )
 
+// 订单侧「手动指定现货」：全部在库现货 + 逐件标出规格是否相符
+router.get(
+  '/worker-platform/consignment/matches/:workOrderId/options',
+  requireAdminPermission('consignment.view'),
+  createJsonHandler(
+    (req) => listWorkOrderInventoryMatchOptions(String(req.params.workOrderId || '')),
+    {
+      successMessage: 'ok',
+      errorMessage: '读取可指定现货失败',
+      scope: '[admin/consignment/matches/options]',
+    },
+  ),
+)
+
+// 库存侧「手动匹配订单」：这件现货可以匹配的待指派/待补资料订单
+router.get(
+  '/worker-platform/consignment/inventories/:id/match-orders',
+  requireAdminPermission('consignment.view'),
+  createJsonHandler(
+    (req) =>
+      listInventoryMatchableOrders(String(req.params.id || ''), {
+        keyword: String(req.query.keyword || ''),
+        pageSize: Number(req.query.pageSize || 0) || undefined,
+      }),
+    {
+      successMessage: 'ok',
+      errorMessage: '读取可匹配订单失败',
+      scope: '[admin/consignment/inventories/match-orders]',
+    },
+  ),
+)
+
 router.post(
   '/worker-platform/consignment/fulfill',
   requireAdminPermission('consignment.fulfill'),
@@ -212,6 +249,8 @@ router.post(
         inventoryId: String(req.body?.inventoryId || ''),
         actorName: req.adminSession?.username || 'admin',
         allowPartial: req.body?.allowPartial === true,
+        allowSpecMismatch: req.body?.allowSpecMismatch === true,
+        matchNote: String(req.body?.matchNote || ''),
       }),
     {
       successMessage: '已使用内部寄售库存直接履约！',
@@ -232,6 +271,8 @@ router.post(
         workerId: req.body?.workerId ? Number(req.body.workerId) : null,
         actorName: req.adminSession?.username || 'admin',
         allowPartial: req.body?.allowPartial === true,
+        allowSpecMismatch: req.body?.allowSpecMismatch === true,
+        matchNote: String(req.body?.matchNote || ''),
       }),
     {
       successMessage: '已指派打手，押金已冻结，工单流转进行中！',