- Introduced `proxyURL` parameter for `EnsureLatestManagementHTML` to enable proxy configuration.
- Refactored HTTP client initialization with new `newHTTPClient` to support proxy-aware requests.
- Updated asset download and fetch logic to utilize the proxy-aware HTTP client.
- Adjusted `server.go` to pass `cfg.ProxyURL` for management asset synchronization calls.
- Introduced `EnsureLatestManagementHTML` to sync `management.html` asset from the latest GitHub release.
- Added config option `DisableControlPanel` to toggle control panel functionality.
- Serve management control panel via `/management.html` endpoint, with automatic download and update mechanism.
- Updated `.gitignore` to include `static/*` directory for control panel assets.