- Introduced new `RadarConfig` structure in `config.go` to manage radar settings, including `statuses_url`, `http_timeout_ms`, and `ping_from`.
- Implemented validation for radar configuration in `config_test.go` to ensure correct URL schemes and timeout limits.
- Added new API routes for radar statuses and ping functionality in the gateway, enhancing the service's capabilities.
- Updated documentation in `GATEWAY_RUN.md` to include details about the new radar features and their usage.
- Enhanced the user interface to include navigation and display options for the Radar DC section in the sidebar and page titles.
- Added client-side API functions for fetching radar statuses and ping responses, improving integration with the frontend.
