sync-server/server.js：在 type=url 的 JSON 解析里增加多种 URL 结构识别，拿到链接后继续服务端跟随重定向并直通流媒

体，避免把 JSON 返回给 <audio>。

sync-server/server.js

@@ -400,8 +400,24 @@ function proxyRequest(targetUrl, req, res) {
                 proxyRes.on('end', () => {
                     try {
                         const parsedBody = JSON.parse(body);
-                        if (parsedBody && parsedBody.url) {
+                        const extractUrl = (payload) => {
-                            requestStream(parsedBody.url, 1);
+                            if (!payload || typeof payload !== 'object') return null;
+                            if (typeof payload.url === 'string') return payload.url;
+                            if (typeof payload.data === 'string') return payload.data;
+                            if (payload.data && typeof payload.data === 'object') {
+                                if (typeof payload.data.url === 'string') return payload.data.url;
+                                if (typeof payload.data.link === 'string') return payload.data.link;
+                                if (payload.data.data && typeof payload.data.data.url === 'string') return payload.data.data.url;
+                                if (Array.isArray(payload.data) && payload.data[0] && typeof payload.data[0].url === 'string') {
+                                    return payload.data[0].url;
+                                }
+                            }
+                            if (payload.result && typeof payload.result.url === 'string') return payload.result.url;
+                            return null;
+                        };
+                        const resolvedUrl = extractUrl(parsedBody);
+                        if (resolvedUrl) {
+                            requestStream(url.resolve(targetUrl, resolvedUrl), 1);
                             return;
                         }
                     } catch (e) {