debugSfxTotalCreated property

Total AudioPlayers _sfxPool has ever created. For SEQUENTIAL playSfx calls (each one's player released before the next starts — the realistic staggered-combo-SFX case sfxPoolCapacity is about) this stays at 1 no matter how many calls run, proving reuse actually happens instead of "one new player per call" (the pre-ENH-79 behavior). For genuinely SIMULTANEOUS calls (all in flight at once, e.g. via Future.wait with none released yet) this can still exceed sfxPoolCapacity — that many native channels really are needed at that exact instant regardless of pooling; debugSfxPoolFreeCount is what stays bounded afterward (the excess gets disposed, not retained).