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/pages/qrcode/index.vue

@@ -233,7 +233,7 @@ async function fetchCards() {
 async function fetchEntryNotice() {
   if (entryNoticeLoaded.value) return
   try {
-    const list = await post<BannerItem[]>('/mp-api/mpContent/queryList', { channel: 'pingxiang', type: 'ENTRY_NOTICE' })
+    const list = await post<BannerItem[]>('/mpContent/queryList', { channel: 'pingxiang', type: 'ENTRY_NOTICE' })
     entryNotice.value = list?.[0]?.content || ''
   } catch {
     entryNotice.value = ''
@@ -386,7 +386,7 @@ function onFeatureClick(item: { label: string }) {
       uni.showToast({ title: '请先选择一张旅游卡', icon: 'none' })
       return
     }
-    post<any>('/mp-api/mpCard/checkFaceBind', { cardModelId: card.cardModelId, cardNumber: card.cardNo })
+    post<any>('/mpCard/checkFaceBind', { cardModelId: card.cardModelId, cardNumber: card.cardNo })
       .then((res) => {
         if (res?.needBindFace) {
           showFaceModal.value = true