refactor: split casino.go, dedup helpers, remove audit docs

1 files changed, 7 insertions, 0 deletions

diff --git a/internal/combat/state.go b/internal/combat/state.go
index e1ee8e7..17a9c09 100644
--- a/internal/combat/state.go
+++ b/internal/combat/state.go
@@ -36,6 +36,13 @@ func (t *Tracker) Enter(playerName, mobID string) {
 	if prev, ok := t.combatants[playerName]; ok {
 		delete(t.mobTargets, prev.MobID)
 	}
+	// If another player already holds this mob, replacing the mobTargets
+	// entry would leave their combatants entry pointing at a mob this new
+	// player now owns. Clear it so their later Leave cannot delete this
+	// player's claim and unlock a mob that is still being fought.
+	if prevOwner, ok := t.mobTargets[mobID]; ok && prevOwner != playerName {
+		delete(t.combatants, prevOwner)
+	}
 	t.combatants[playerName] = &State{
 		PlayerName: playerName,
 		MobID:      mobID,