Messenger first. Rainbow optional.

She carried word between worlds — a signal with manners. BK-F1 keeps the frequency warm in the pit lane.

Four letters. Arc after rain — or a name.

Hint: rearrange “siri.” Loud without shouting; destination included.

Chartreuse that means “pay attention.”

Keep the flash and the hush; only the payload behind them will change.

You saw the arc before the name.

When BK-F1 transmits for real, this page becomes the starting grid. Until then: lights out… almost.