Command time display

A clear header time box shows the current tick, next tick countdown and 24-hour UTC clock.

What changed

Tick values and countdown use a readable theme-aware header box.

A live UTC HH:mm:ss clock updates every second and uses military time.

Tick interval progress freezes on pause and restarts with the ticker.

The header compares local and synchronized server UTC clocks and shows page load and server round-trip milliseconds.