Function useMatchCountdown

useMatchCountdown(
config?: MatchCountdownConfig,
onComplete?: () => void,
): UseMatchCountdownResult
useMatchCountdown Hook

Manages the complete match start countdown flow:
1. Idle state waiting for match start
2. Ready state shows "Ready?" message (1s)
3. Counting state counts down from 3 to 1 (1s intervals)
4. Fight state shows "Fight!" message (1s)
5. Complete state signals combat can begin
Parameters
- config: MatchCountdownConfig = {}
  Configuration for countdown timings
- OptionalonComplete: () => void
  Callback when countdown completes
Returns UseMatchCountdownResult
Match countdown state and control functions
Example
```
const {
  state,
  currentNumber,
  startCountdown,
  skipCountdown,
} = useMatchCountdown(
  { startNumber: 3 },
  () => {
    // Enable combat inputs
    enableCombatControls();
  }
);

// When match initializes
startCountdown();
```
- Defined in hooks/useMatchCountdown.ts:106