增加周榜，月榜，日榜搜索和批量下载

backend/server.js

@@ -10,6 +10,7 @@ const artistRoutes = require('./routes/artist');
 const downloadRoutes = require('./routes/download');
 const proxyRoutes = require('./routes/proxy');
 const repositoryRoutes = require('./routes/repository');
+const rankingRoutes = require('./routes/ranking');
 
 // 导入中间件 - 临时注释掉来定位问题
 const { errorHandler } = require('./middleware/errorHandler');
@@ -184,6 +185,7 @@ class PixivServer {
     this.app.use('/api/artwork', authMiddleware, artworkRoutes);
     this.app.use('/api/artist', authMiddleware, artistRoutes);
     this.app.use('/api/download', authMiddleware, downloadRoutes);
+    this.app.use('/api/ranking', authMiddleware, rankingRoutes);
     this.app.use('/api/repository', repositoryRoutes); // 仓库管理，不需要认证
     this.app.use('/api/proxy', proxyRoutes); // 图片代理，不需要认证