R72-A2 修复报销撤回释放绑定发票并补测试

server/src/routes/reimbursements.js

@@ -3075,6 +3075,19 @@ async function reimbursementRoutes(fastify) {
           },
         });
 
+        const unbound = await tx.invoicePool.updateMany({
+          where: {
+            linked_reimbursement_id: reimbursementId,
+            status: "bound",
+          },
+          data: {
+            status: "available",
+            linked_reimbursement_id: null,
+            linked_item_id: null,
+            updated_by: request.employee.id,
+          },
+        });
+
         await tx.reimbursementForm.update({
           where: { id: reimbursementId },
           data: {
@@ -3100,6 +3113,7 @@ async function reimbursementRoutes(fastify) {
           outcome: "withdrawn",
           workflowInstanceId: activeInstance.id,
           reimbursementStatus: "draft",
+          unboundInvoiceCount: unbound.count,
         };
       });