refactor: 统一接口调用为单前缀写法，去除 19 处页面内写死的 /mp-api（API_BASE 已含），并新增 check:api-prefix 防回归脚本

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/packages/user/api/douyin.ts

@@ -82,7 +82,7 @@ export async function queryVoucherList(params: QueryVoucherListParams): Promise<
     await delay(300)
     return MOCK_VOUCHERS.map((v) => ({ ...v, mobile: params.mobile }))
   }
-  return post<VoucherItem[]>('/mp-api/douyin/voucherList', params)
+  return post<VoucherItem[]>('/douyin/voucherList', params)
 }
 
 /**
@@ -94,5 +94,5 @@ export async function activateAndBind(params: ActivateAndBindParams): Promise<vo
     await delay(800)
     return
   }
-  await post<null>('/mp-api/douyin/activateAndBind', params)
+  await post<null>('/douyin/activateAndBind', params)
 }

src/packages/user/pages/buy.vue

@@ -85,7 +85,7 @@ const noticeHtml = computed(() => fixRichHtml(noticeContent.value))
 /** 获取购卡须知富文本（type = CARD_PURCHASE_NOTICE） */
 async function fetchPurchaseNotice() {
   try {
-    const res = await post<BannerItem[]>('/mp-api/mpContent/queryList', {
+    const res = await post<BannerItem[]>('/mpContent/queryList', {
       channel: 'pingxiang',
       type: 'CARD_PURCHASE_NOTICE',
     })

src/packages/user/pages/card-notice.vue

@@ -23,7 +23,7 @@ const loading = ref(true)
 
 onMounted(async () => {
   try {
-    const list = await post<any[]>('/mp-api/mpContent/queryList', { channel: 'pingxiang', type: 'CARD_NOTICE' })
+    const list = await post<any[]>('/mpContent/queryList', { channel: 'pingxiang', type: 'CARD_NOTICE' })
     content.value = list?.[0]?.content || ''
   } catch {
     showToast('加载失败')

src/packages/user/pages/douyin-verify.vue

@@ -310,7 +310,7 @@ const noticeHtml = computed(() => fixRichHtml(noticeContent.value))
 /** 获取购卡须知富文本（type = CARD_PURCHASE_NOTICE） */
 async function fetchPurchaseNotice() {
   try {
-    const res = await post<BannerItem[]>('/mp-api/mpContent/queryList', {
+    const res = await post<BannerItem[]>('/mpContent/queryList', {
       channel: 'pingxiang',
       type: 'CARD_PURCHASE_NOTICE',
     })