task-84(店铺中心): 实现新增店铺密钥表单

新增 shop-key-form-model.ts(备注/紫鸟账号/令牌校验与 camel 请求体序列化，
镜像 Java NotBlank/Size 规则，令牌去 Bearer 前缀) 并在 shop-key-api.ts 增加
submitCreateShopKey(POST /api/admin/shop-keys)。

TDD: task-84.test.ts 8 用例先 RED 后 GREEN。

admin-frontend-vue/src/pages/shop/shop-key-api.ts

@@ -1,7 +1,19 @@
-/** 店铺密钥列表加载适配（任务 82）：GET /api/admin/shop-keys + 分页归一与解析。 */
+/** 店铺密钥列表加载与新增适配（任务 82/84）：GET/POST /api/admin/shop-keys + 归一与解析。 */
 import { http } from '@/api/http'
-import { parseShopKeyPage } from './shop-key-model'
-import { normalizeKeyListParams, toKeyPageQuery, type ShopKeyListParams, type ShopKeyPageResult } from './shop-dto.ts'
+import { unwrap } from '@/api/envelope'
+import { parseShopKeyPage, toShopKeyItem } from './shop-key-model.ts'
+import {
+  normalizeKeyListParams,
+  toKeyPageQuery,
+  type ShopKeyItem,
+  type ShopKeyListParams,
+  type ShopKeyPageResult,
+} from './shop-dto.ts'
+import {
+  toShopKeyCreateRequest,
+  validateShopKeyForm,
+  type ShopKeyFormValues,
+} from './shop-key-form-model.ts'
 
 export const SHOP_KEYS_ENDPOINT = '/api/admin/shop-keys'
 
@@ -10,3 +22,17 @@ export async function fetchShopKeyList(params: Partial<ShopKeyListParams> = {}):
   const { data } = await http.get<unknown>(SHOP_KEYS_ENDPOINT, { params: toKeyPageQuery(normalized) })
   return parseShopKeyPage(data)
 }
+
+/** 提交新增店铺密钥：先校验（失败抛首条错误不发请求），再 POST，解析返回的新记录。 */
+export async function submitCreateShopKey(form: ShopKeyFormValues): Promise<ShopKeyItem> {
+  const { valid, errors } = validateShopKeyForm(form)
+  if (!valid) {
+    throw new Error(Object.values(errors)[0] || '店铺密钥表单校验未通过')
+  }
+  const { data } = await http.post<unknown>(SHOP_KEYS_ENDPOINT, toShopKeyCreateRequest(form))
+  const item = toShopKeyItem(unwrap<unknown>(data))
+  if (!item) {
+    throw new Error('新增店铺密钥响应异常：未返回有效记录')
+  }
+  return item
+}