Function default

default(ecs: default, dt: number): void
ECS system that updates player state timers.

Currently, handles invulnerability countdown logic.
Parameters
- ecs: default
  The ECS world instance.
- dt: number
  Delta time (in seconds).
Returns void
Remarks
- Operates on entities with playerState.
- Ensures timers never drop below zero.
- Defined in game/systems/playerStateSystem.ts:16