Implement the 009-combatant-hp feature that adds optional max HP and current HP tracking per combatant with +/- controls, direct entry, and persistence

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/web/src/hooks/use-encounter.ts

@@ -1,9 +1,11 @@
 import type { EncounterStore } from "@initiative/application";
 import {
 	addCombatantUseCase,
+	adjustHpUseCase,
 	advanceTurnUseCase,
 	editCombatantUseCase,
 	removeCombatantUseCase,
+	setHpUseCase,
 	setInitiativeUseCase,
 } from "@initiative/application";
 import type { CombatantId, DomainEvent, Encounter } from "@initiative/domain";
@@ -132,6 +134,32 @@ export function useEncounter() {
 		[makeStore],
 	);
 
+	const setHp = useCallback(
+		(id: CombatantId, maxHp: number | undefined) => {
+			const result = setHpUseCase(makeStore(), id, maxHp);
+
+			if (isDomainError(result)) {
+				return;
+			}
+
+			setEvents((prev) => [...prev, ...result]);
+		},
+		[makeStore],
+	);
+
+	const adjustHp = useCallback(
+		(id: CombatantId, delta: number) => {
+			const result = adjustHpUseCase(makeStore(), id, delta);
+
+			if (isDomainError(result)) {
+				return;
+			}
+
+			setEvents((prev) => [...prev, ...result]);
+		},
+		[makeStore],
+	);
+
 	return {
 		encounter,
 		events,
@@ -140,5 +168,7 @@ export function useEncounter() {
 		removeCombatant,
 		editCombatant,
 		setInitiative,
+		setHp,
+		adjustHp,
 	} as const;
 }