Function writeJSON

internal/serverapi/api.go:865–871

(w http.ResponseWriter, status int, payload any)

}

func writeJSON(w http.ResponseWriter, status int, payload any) {
	w.Header().Set("Content-Type", "application/json; charset=utf-8")
	w.WriteHeader(status)
	if err := json.NewEncoder(w).Encode(payload); err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
	}
}

// internalError 记录完整错误到日志，并向客户端返回通用 500 响应，避免内部细节泄露。
func internalError(w http.ResponseWriter, r *http.Request, err error) {