Category 6.1 – Online Players & Latency

**Task:** Show live player stats  

**Task Description:**  
Build a real-time dashboard showing online players, realm population, and latency metrics updated every few seconds.

**Requirements:**  
- [ ] Query DB for population  
- [ ] Update every 5s  
- [ ] Display with MudBlazor charts  

**Testing Requirements:**  
- [ ] Validate refresh accuracy  
