反爬虫优化，评论图片支持

app/api/fetcher/network.ts

@@ -1,3 +1,5 @@
+export const runtime = 'nodejs'
+
 import type { BrowserContext, Response } from 'playwright';
 
 export async function safeJson<T>(res: Response): Promise<T | null> {
@@ -20,12 +22,12 @@ export async function safeJson<T>(res: Response): Promise<T | null> {
  */
 export async function downloadBinary(
     context: BrowserContext,
-    url: string
+    url: string,
 ): Promise<{ buffer: Buffer; contentType: string; ext: string }> {
     console.log('下载：', url);
 
     const headers = {
-        referer: url,
+        referer: 'https://www.douyin.com/',
     } as Record<string, string>;
 
     const res = await context.request.get(url, {
@@ -93,7 +95,49 @@ export function waitForFirstResponse(
 }
 
 /**
- * 等待符合条件的单个 Response，带短超时；用于评论等“可有可无”的数据。
+ * 在指定时间内持续收集所有符合条件的 Response
+ * 用于评论等需要滚动加载的数据
+ */
+export function collectResponsesWithinTime(
+    context: BrowserContext,
+    predicate: (r: Response) => boolean,
+    durationMs: number
+): Promise<Response[]> {
+    return new Promise((resolve) => {
+        const collected: Response[] = [];
+        const seenUrls = new Set<string>();
+        let timer: NodeJS.Timeout | undefined;
+
+        const handler = (res: Response) => {
+            try {
+                if (predicate(res)) {
+                    // 使用 URL 去重，避免重复收集同一个请求
+                    const url = res.url();
+                    if (!seenUrls.has(url)) {
+                        seenUrls.add(url);
+                        collected.push(res);
+                    }
+                }
+            } catch {
+                // ignore predicate errors
+            }
+        };
+
+        const cleanup = () => {
+            context.off('response', handler);
+            if (timer) clearTimeout(timer);
+        };
+
+        context.on('response', handler);
+        timer = setTimeout(() => {
+            cleanup();
+            resolve(collected);
+        }, durationMs);
+    });
+}
+
+/**
+ * 等待符合条件的单个 Response，带短超时；用于评论等"可有可无"的数据。
  */
 export function waitForResponseWithTimeout(
     context: BrowserContext,