fix: preserve log alert recovery events

internal/ingest/alert_forward.go

@@ -108,7 +108,7 @@ func forwardAlert(body AlertReceiveBody) error {
 }
 
 func postAlertPayload(cfg *config.AlertForwardConf, path string, payload []byte, traceID string) (*alertForwardResponse, error) {
-	req, err := http.NewRequest(http.MethodPost, cfg.BaseURL+path, bytes.NewReader(payload))
+	req, err := http.NewRequest(http.MethodPost, strings.TrimRight(strings.TrimSpace(cfg.BaseURL), "/")+path, bytes.NewReader(payload))
 	if err != nil {
 		return nil, fmt.Errorf("创建 Alert 转发请求失败：%w", err)
 	}