What: Parallel download attempts from new CDN infrastructure (downloads.claude.ai) alongside the primary Google Cloud Storage source, for performance testing without user impact.
Details:
- Runs silently in background during binary downloads
- Collects latency, success/failure, and error type metrics
- Reports via
tengu_native_cdn_dark_read_failuretelemetry event - Creates temporary
claude-cdn-dark-read-*directories, automatically cleaned up - Evidence:
kp5()at line 428907,Ah2CDN URL at line 428959