- Introduced `started_at` and `uptime_seconds` fields to the `SystemInfo` structure for tracking server boot time and uptime.
- Updated the `GetSystemInfo` handler to populate these new fields based on server runtime.
- Enhanced the frontend to display server startup time and uptime in the system information view, improving visibility for users.
- Added localization support for new labels and descriptions related to server uptime and startup time in multiple languages.
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