diag: 在 DoWithTLS 路径也添加诊断日志

backend/internal/repository/http_upstream.go

@@ -191,7 +191,20 @@ func (s *httpUpstreamService) DoWithTLS(req *http.Request, proxyURL string, acco
 	}
 
 	// 优先使用 Node.js TLS 代理模式
-	if s.isNodeTLSProxyEnabled() && s.shouldRouteViaNodeProxy(req) {		return s.doViaNodeTLSProxy(req, accountID, accountConcurrency)
+	if s.isNodeTLSProxyEnabled() {
+		shouldRoute := s.shouldRouteViaNodeProxy(req)
+		host := ""
+		if req != nil && req.URL != nil {
+			host = req.URL.Hostname()
+		}
+		slog.Warn("node_tls_proxy_check_tls_path",
+			"host", host,
+			"should_route", shouldRoute,
+			"tls_fingerprint_enabled", enableTLSFingerprint,
+		)
+		if shouldRoute {
+			return s.doViaNodeTLSProxy(req, accountID, accountConcurrency)
+		}
 	}
 
 	// TLS 指纹已启用，记录调试日志