Increase navigation timeout to 90s for parallel browser crawling

Dutchie pages can take 30-40s to load, and when running 3 parallel browsers
they compete for resources, causing some to hit the 60s timeout. Increased
to 90s to accommodate slow-loading React SPAs.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

backend/src/scraper-v2/downloader.ts

@@ -379,9 +379,10 @@ export class Downloader {
       }
 
       // Navigate to page - use networkidle2 for SPAs like Dutchie
+      // Increased timeout to 90s - Dutchie pages can take 30-40s to fully load
       const navigationPromise = page.goto(request.url, {
         waitUntil: 'networkidle2',
-        timeout: 60000
+        timeout: 90000
       });
 
       const response = await navigationPromise;