fix: 修复Server搜索问题

- 将meilisearch搜索服务移至Server端

server/services/search.ts

@@ -0,0 +1,85 @@
+import { MeiliSearch } from 'meilisearch';
+import type { SearchParams } from 'meilisearch';
+
+export class MeiliService {
+  private client: MeiliSearch;
+  private indexes: string[];
+
+  constructor() {
+    const runtimeConfig = useRuntimeConfig();
+
+    const host = runtimeConfig.public?.meili?.host;
+    const apiKey = runtimeConfig.public?.meili?.searchKey;
+
+    if (!host) throw new Error('Meilisearch host not configured');
+    if (!apiKey) throw new Error('Meilisearch server key missing');
+
+    this.client = new MeiliSearch({ host, apiKey });
+    this.indexes = runtimeConfig.public.meili.indexes || [];
+  }
+
+  /** 构建索引名: products_zh-CN */
+  private buildIndexNames(locale?: string) {
+    if (!locale) return this.indexes;
+    return this.indexes.map((i) => `${i.trim()}_${locale}`);
+  }
+
+  /** Server 封装的搜索方法 */
+  async search<
+    K extends keyof MeiliIndexMap = keyof MeiliIndexMap,
+    T extends MeiliIndexMap[K] = MeiliIndexMap[K],
+  >(query: string, params: SearchParams = {}, locale?: string) {
+    const trimmedQuery = query.trim();
+    if (!trimmedQuery) return [];
+
+    const activeIndexes = this.buildIndexNames(locale);
+    if (!activeIndexes.length) {
+      logger.warn('No Meilisearch indexes configured.');
+      return [];
+    }
+
+    const requests = activeIndexes.map(async (indexUID) => {
+      const response = await this.client
+        .index(indexUID)
+        .search<T>(trimmedQuery, {
+          limit: params.limit ?? 10,
+          ...params,
+        });
+
+      return {
+        indexUid: indexUID,
+        rawIndex: indexUID.replace(`_${locale}`, ''),
+        hits: response.hits,
+        estimatedTotalHits: response.estimatedTotalHits ?? response.hits.length,
+        processingTimeMs: response.processingTimeMs ?? 0,
+      } as SearchSection<T>;
+    });
+
+    // 并行安全执行
+    const results = await Promise.allSettled(requests);
+
+    results
+      .filter(
+        (result): result is PromiseRejectedResult =>
+          result.status === 'rejected'
+      )
+      .forEach((result) => {
+        logger.error('Meilisearch query failed', result.reason);
+      });
+
+    const fulfilled = results.filter(
+      (r): r is PromiseFulfilledResult<SearchSection<T>> =>
+        r.status === 'fulfilled'
+    );
+
+    return fulfilled.map((r) => r.value).filter((s) => s.hits.length > 0);
+  }
+}
+
+/** 单例 */
+let instance: MeiliService | null = null;
+
+export const getMeiliService = () => {
+  if (!instance) instance = new MeiliService();
+  return instance;
+};