feat(tender): 汇吉采标书购买 阶段3 - C端标书列表/详情/购买入口

- server/api/tender/{list.get,detail.get,order.post}.ts 代理到 mp-api /api/hjc/bid-project|order
- app/types/tender.ts 前端视图模型
- app/templates/template-07/pages/{TenderList,TenderDetail,BuyDocument}.vue（Tailwind，仿 Product 页）
- app/pages/tender/index.vue + tender/[id].vue + buy.vue 路由，经 useTemplate 加载
- useTemplate.ts 注册 TenderList/TenderDetail/BuyDocument（全部模板安全可选）
- 附 BUY_TENDER_MAP_REPORT.md（hjc-web 结构映射参考）

server/api/tender/detail.get.ts

@@ -0,0 +1,41 @@
+import { $fetch } from 'ofetch'
+import { createError, defineEventHandler, getRouterParam } from 'h3'
+import { useRuntimeConfig } from '#imports'
+import { getTenantFromContext } from '../../utils/tenant'
+
+/**
+ * 标书项目详情
+ * GET /api/tender/detail?id=1   （或 /api/tender/{id}）
+ * 代理到 mp-api（mp-java） hjc 标书项目详情，返回扁平化项目对象；不存在则 404。
+ */
+export default defineEventHandler(async (event) => {
+  const config = useRuntimeConfig()
+  const ctx = getTenantFromContext(event, config)
+  const id = getRouterParam(event, 'id') || (getQuery(event) as any)?.id
+  const modulesApiBase = config.public.modulesApiBase as string
+
+  if (!id) {
+    throw createError({ statusCode: 400, statusMessage: '缺少 id' })
+  }
+
+  try {
+    const res = await $fetch(`/hjc/bid-project/${id}`, {
+      baseURL: modulesApiBase,
+      headers: { TenantId: ctx.tenantId }
+    }) as any
+
+    const data = res && res.data !== undefined ? res.data : res
+    if (!data) {
+      throw createError({ statusCode: 404, statusMessage: '标书项目不存在' })
+    }
+    return data
+  } catch (error: any) {
+    if (error?.statusCode === 404) {
+      throw error
+    }
+    throw createError({
+      statusCode: error?.statusCode || error?.response?.status || 502,
+      statusMessage: error?.statusMessage || 'Failed to fetch tender detail'
+    })
+  }
+})