bug: fix ammo parsing

Author: lukepolo

internal/parser/shots.go

@@ -161,9 +161,12 @@ func (s *state) onWeaponFire(e events.WeaponFire) {
 	// AmmoInMagazine is captured AFTER the shot fires; add 1 to recover
 	// the pre-shot count. Downstream uses a sequence of these values to
 	// infer reloads (count increases between consecutive shots).
+	// Some weapons (knife, grenades that route through here, edge cases
+	// in CS2 demos) return a uint32 sentinel like 0xFFFFFFFF — cap to a
+	// sane range so the int4 DB column doesn't overflow.
 	if e.Weapon != nil {
 		ammoAfter := e.Weapon.AmmoInMagazine()
-		if ammoAfter >= 0 {
+		if ammoAfter >= 0 && ammoAfter < 1000 {
 			ammoBefore := ammoAfter + 1
 			ev.AmmoInMagazine = &ammoBefore
 		}