feat(consignment): 寄售数量支持关闭修改，固定为 1

apps/backend/src/services/worker-platform/consignment-spec-service.test.ts

@@ -13,6 +13,7 @@ import {
   normalizeConsignmentSpecValues,
   normalizeConsignmentSpecs,
   parseConsignmentSpecValues,
+  resolveConsignmentPublishQuantity,
   resolveLegacyConsignmentColumns,
   resolveWorkerConsignmentPrice,
   type ConsignmentPricingConfig,
@@ -511,6 +512,17 @@ test('合并迁移 147 必须包含动态规格的 JSON、匹配 key、文本与
   }
 })
 
+test('发布数量：关闭「允许修改寄售数量」时固定为 1，开启时按 1~1000 取整', () => {
+  assert.equal(resolveConsignmentPublishQuantity(false, 5), 1, '关闭时必须固定 1')
+  assert.equal(resolveConsignmentPublishQuantity(false, undefined), 1, '关闭时缺省 1')
+  assert.equal(resolveConsignmentPublishQuantity(false, 0), 1, '关闭时 0 也回落 1')
+  assert.equal(resolveConsignmentPublishQuantity(true, 3), 3, '开启时按填写值')
+  assert.equal(resolveConsignmentPublishQuantity(true, 0), 1, '非法值回落 1')
+  assert.equal(resolveConsignmentPublishQuantity(true, Number.NaN), 1, 'NaN 回落 1')
+  assert.equal(resolveConsignmentPublishQuantity(true, 1001), 1000, '上限 1000')
+  assert.equal(resolveConsignmentPublishQuantity(true, 1.6), 2, '四舍五入')
+})
+
 test('合并迁移 147 必须为苏尔南手枪写入已发布的五个单选字段配置', async () => {
   const sql = await readFile(
     new URL('../../db/migrations/147_consignment_platform.sql', import.meta.url),

apps/backend/src/services/worker-platform/consignment-spec-service.ts

@@ -678,6 +678,20 @@ function isNumericSpecField(field: ConsignmentSpecField): boolean {
   return field.type === 'number' || field.key === 'diamondLevel' || field.key === 'brillianceCount'
 }
 
+/**
+ * 发布数量口径：分类关闭「允许修改寄售数量」时固定为 1；
+ * 否则按 1~1000 取整，非法值回落 1（防止旧客户端/直接调接口绕过前端禁用）。
+ */
+export function resolveConsignmentPublishQuantity(
+  allowQuantityEdit: boolean,
+  rawQuantity: unknown,
+): number {
+  if (!allowQuantityEdit) return 1
+  const parsed = Number(rawQuantity)
+  if (!Number.isFinite(parsed) || parsed < 1) return 1
+  return Math.min(1000, Math.max(1, Math.round(parsed)))
+}
+
 /** 只取参与匹配的字段生成稳定 key（按字段 key 排序，避免字段顺序影响）。 */
 export function buildConsignmentSpecKey(
   specs: ConsignmentSpecField[],

apps/backend/src/services/worker-platform/consignment-worker-service.ts

@@ -47,6 +47,7 @@ import {
   computeConsignmentPrice,
   normalizeConsignmentIntakeValues,
   normalizeConsignmentSpecValues,
+  resolveConsignmentPublishQuantity,
   resolveLegacyConsignmentColumns,
   resolveWorkerConsignmentPrice,
   type ConsignmentSpecField,
@@ -314,7 +315,11 @@ export async function publishWorkerConsignment(workerId: number, payload: JsonOb
       errorCode: 'consignment_profile_unavailable',
     })
   }
-  const quantity = Math.max(1, Math.min(1000, Math.round(Number(payload.quantity || 1))))
+  // 「允许修改寄售数量」关闭时固定 1 件：前端会禁用输入框，这里再兜一层防绕过。
+  const quantity = resolveConsignmentPublishQuantity(
+    profile?.config.fields.quantity !== false,
+    payload.quantity,
+  )
   if (profile?.config.inventoryLimit.enabled) {
     const activeQuantity = await countWorkerActiveConsignmentQuantity(workerId)
     if (activeQuantity + quantity > profile.config.inventoryLimit.maxActiveQuantity) {