Changes in build 7
- Client ID rotation: Rotate through 5 VK app client_id/client_secret pairs to reduce per-app rate limiting and captcha frequency
- Fresh captcha URL for WebView: When PoW fails and falls back to WebView, fetch a fresh captcha URL via wgRefreshCaptchaURL (prevents stale URLs after background)
- TURNBind package: Created missing pkg/turnbind with conn.Bind implementation that routes WireGuard packets through DTLS/TURN proxy
- API warmup: Added calls.getCallPreview step before getAnonymousToken (matches reference implementation)
- API version: Upgraded to v5.275
Test results (build 7)
- PoW auto-solve: 6/7 reconnects solved automatically (1st attempt)
- Slider captcha fallback: WebView shown with fresh URL, solved manually, connection resumed
- 10/10 active connections, 31+ MB traffic
- TURN RTT 10-14ms, DTLS HS 42-61ms, Internet 56-70ms