Update Healer Man server

src/game/coaBarbarianExecuteRuntime.ts

@@ -0,0 +1,32 @@
+import type { AbilityDefinition } from "./abilityCatalog";
+
+/** CoA tree node 5744 / source spell 804414: Decapitate is usable below 35% health. */
+export const COA_BARBARIAN_DECAPITATE_TALENT_ENTRY_ID = 5744;
+export const COA_BARBARIAN_DECAPITATE_HEALTH_THRESHOLD = 0.35;
+
+type CoaBarbarianDecapitateIdentity = Pick<AbilityDefinition, "classId" | "talentEntryId">;
+
+export interface CoaBarbarianExecuteTargetHealth {
+  readonly health?: number;
+  readonly maxHealth?: number;
+  readonly dead?: boolean;
+}
+
+export function isCoaBarbarianDecapitate(
+  ability: CoaBarbarianDecapitateIdentity | null | undefined,
+): boolean {
+  return ability?.classId === "barbarian"
+    && ability.talentEntryId === COA_BARBARIAN_DECAPITATE_TALENT_ENTRY_ID;
+}
+
+/** Other actions pass through; Decapitate requires a living, valid target strictly below 35%. */
+export function coaBarbarianDecapitateTargetAllowed(
+  ability: CoaBarbarianDecapitateIdentity | null | undefined,
+  target: CoaBarbarianExecuteTargetHealth | null | undefined,
+): boolean {
+  if (!isCoaBarbarianDecapitate(ability)) return true;
+  if (!target || target.dead === true
+    || !Number.isFinite(target.health) || !Number.isFinite(target.maxHealth)
+    || target.health! <= 0 || target.maxHealth! <= 0) return false;
+  return target.health! / target.maxHealth! < COA_BARBARIAN_DECAPITATE_HEALTH_THRESHOLD;
+}