- Support openresty_default_limit_req_per_ip in system_configs.
- Add limit_req and limit_req_status 429 directive generation in openresty renderer.
- Implement route-level limit_req_per_ip override and explicit disable.
- Add frontend UI inputs and validation in rate limits tab config.
- Update swagger API docs and changelog for v3.4.3-beta.3.
Split rate-limits into analysis/config tabs; reuse access-log overview
filters; chart hourly RPS vs visits with dataZoom; rank top hosts/IPs
by window-average RPS.