feat: 放宽 MongoDB 超时(Atlas) + 热搜 3D 词云(Top10) + i18n 补充

server/api/hot.get.ts

@@ -0,0 +1,21 @@
+import { searchesCol, tryMongo } from '../utils/mongo'
+
+/** 热搜关键词：按搜索次数降序，返回前 N 个 */
+export default defineEventHandler(async (event) => {
+  const limit = Math.min(Number(getQuery(event).limit) || 10, 50)
+
+  const data = await tryMongo(async () => {
+    const col = await searchesCol()
+    const hot = await col
+      .aggregate<{ _id: string; count: number; last: Date }>([
+        { $group: { _id: '$keyword', count: { $sum: 1 }, last: { $max: '$createdAt' } } },
+        { $sort: { count: -1, last: -1 } },
+        { $limit: limit }
+      ])
+      .toArray()
+    return hot.map((h) => ({ keyword: h._id, count: h.count, last: h.last }))
+  })
+
+  if (!data) return { keywords: [], offline: true }
+  return { keywords: data, offline: false }
+})