Fix context cancellation race condition in HTTP forwarding

- Use context.Background() instead of request context for outbound requests
- Prevents cancellation when HTTP server completes before client request
- Resolves 'context canceled' error in HTTP forwarding
- Should fix the race condition causing empty replies

Co-authored-by: f0ssel <[email protected]>

Author: blink-so[bot]

proxy/proxy.go

@@ -225,7 +225,7 @@ func (p *Server) forwardHTTPRequest(w http.ResponseWriter, r *http.Request) {
 	p.logger.Debug("About to make HTTP request", "target", targetURL.String())
 
 	// Make the request with context
-	ctx, cancel := context.WithTimeout(r.Context(), 5*time.Second)
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 	defer cancel()
 	req = req.WithContext(ctx)